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Recent Longevity News for the seven days ending
11/2/11. You should consult your doctor if you are taking any medications.
Live
longer with fewer calories? Key enzyme involved in aging process found -
Science Daily, 10/31/11 - "We are able to show that
caloric restriction slows down aging by
preventing an enzyme, peroxiredoxin, from being inactivated. This enzyme is also
extremely important in counteracting damage to our genetic material ... Prx1 is
damaged during aging and loses its activity. Caloric restriction counteracts
this by increasing the production of another enzyme, Srx1, which repairs Prx1.
Interestingly, the study also shows that aging can be delayed without caloric
restriction by only increasing the quantity of Srx1 in the cell. Repair of the
peroxiredoxin Prx1 consequently emerges as a key process in aging ... Impaired
Prx1 function leads to various types of genetic defects and cancer. Conversely,
we can now speculate whether increased repair of Prx1 during aging can
counteract, or at least delay, the development of cancer" - Note: I
didn't think "fishes" was a word but I researched it and it's used to refer to
different species of fish.
CoQ10 may boost antioxidant defenses in people with atherosclerosis - Nutra
USA, 10/28/11 - "A daily CoQ10
dose of 150 mg was associated with 29% lower levels of malondialdehyde (MDA - a
reactive carbonyl compound and a well-established marker of oxidative stress)
after eight weeks, compared with the placebo group ... In addition, after 12
weeks of supplementation, the CoQ10 supplement appeared to stimulate the body’s
antioxidant defenses and levels of the antioxidant enzymes catalase and
superoxide dismutase (SOD) were 230% and 78% higher than the placebo group,
respectively ... blood levels increased of CoQ10 increased in the high dose
group by 189% after 12 weeks, but no significant increases were observed in the
60 mg group" - [Abstract]
- See
ubiquinol products at Amazon.com.
Childhood diet lower in fat and higher in fiber may lower risk for chronic
disease in adulthood - Science Daily, 10/28/11 - "In
this study, researchers evaluated 230 women between the ages of 25 and 29 years,
who nine years before the current study participated in the Dietary Intervention
Study in Children (DISC). DISC was a randomized controlled clinical trial of a
reduced-fat dietary intervention that strived to limit fat intake to 28 percent
of daily caloric intake and increase dietary fiber intake by encouraging
consumption of fruits, vegetables and whole grains. The current study was
conducted among females who had participated in the DISC trial to determine the
longer-term effects of the DISC intervention ... Few participants in our
follow-up study met the criteria for metabolic syndrome, however the
intervention group had statistically significant lower mean systolic blood
pressure and fasting plasma glucose levels compared to the control group ...
Longer follow-up studies of DISC participants are needed to determine if the
differences found in this study persist or widen with increasing age"
Older
men with higher testosterone levels lose less muscle mass as they age -
Science Daily, 10/27/11 - "Our study finds that men,
aged 65 years and older, with higher
testosterone levels lost less muscle mass, especially in their arms and
legs, than men this age who had lower testosterone levels" - Note:
My testosterone has been slightly above the normal range. I believe it's
because of the quarter tablet of
letrozole I take every
third day. See
letrozole at OffshoreRX.
‘Pink Glove Dance’ Take 3: Winning Video Announced - ABC News, 10/27/11 -
"The company received 139 submissions from 40 states and
Canada ... Medline asked visitors to its website to vote for the Top 3 videos.
And this evening, the company shared its three winners with ABC News. Lexington
Medical Center in West Columbia, S.C., took first place"
CoQ10 may reduce muscle damage during intensive exercise - Nutra USA,
10/27/11 - "Twenty ultra-runners participated in the
study and were divided into two equal groups. One group received one 30 mg
capsule of
CoQ10 two days before the test, three 30 mg capsules
the day before the test, and one capsule one hour before the test. The other
group received placebo at the same time. The test involved a 50 km distance run
across Europe’s highest road in the Sierra Nevada ... Results showed that the
placebo group displayed a 100% increase in levels of 8-OHdG, which <i>“a
sensitive indicator of DNA damage as a result of oxidative stress”,</i> said the
researchers, compared with an increase of 37.5% in the runners taking the CoQ10
supplements ... The data also indicated that CoQ10 countered the over-expression
of certain pro-inflammatory compounds after exercise ... a reduction in levels
of creatinine in the urine was observed in the CoQ10 group, compared with the
placebo group. Creatinine is produced from creatine and high levels are a marker
of muscle break down (or kidney damage) ... CoQ10 supplementation reduces
creatinine excretion and therefore decrease muscle damage during
physical performance" - [Abstract]
- See
ubiquinol products at Amazon.com.
Resveratrol may boost oral health: Cell study - Nutra USA, 10/26/11 -
"If additional studies support the Hong Kong findings
then oral health may also be added to the list of potential benefits of
resveratrol ... Results showed that levels of
both A. actinomycetemcomitans and P. gingivalis were
significantly decreased after 1 hour and that no viable bacterial cells were
observed after 24 hours ... Resveratrol had no effect on the other
non-periodontitis promoting oral microorganisms, said the researchers ... the
researchers note that periodontal disease
involves an inflammatory process, and that a recent study has suggested that
resveratrol may block this process by preventing the binding of a
pro-inflammatory compound called nuclear factor kappaB" - [Abstract]
- See
resveratrol products at Amazon.com.
The multiple nutrient needs of bones: Review - Nutra USA, 10/26/11 -
"According to the new review of the literature, the
majority of studies concerning
bone health have shown that “vitamin B
complex and vitamins C, E, and K correlated positively with bone mineral density
(BMD) at multiple skeletal sites and/or were associated with reduced risk of
fracture, independent of BMD” ... Animal data has “confirmed” that vitamin E,
and particularly the tocotrienol form of vitamin E, had anti-osteoporotic
activities ... Biological plausibility does exist for vitamin K, since
osteocalcin is a vitamin K-dependent protein and it is essential for the body to
use calcium in bone tissue. Without adequate vitamin K, the osteocalcin remains
inactive, and this not effective" - [Abstract]
How
cannabis causes 'cognitive chaos' in the brain - Science Daily, 10/25/11 -
"While the effects of the drug on individual brain regions were subtle, the drug
completely disrupted co-ordinated brain waves across the hippocampus and
prefrontal cortex, as though two sections of the orchestra were playing out of
synch. Both these brain structures are essential for memory and decision-making
and heavily implicated in the pathology of schizophrenia ...
Marijuana abuse is common among sufferers of
schizophrenia and recent studies have shown that the psychoactive ingredient of
marijuana can induce some symptoms of schizophrenia in healthy volunteers"
You are
what you eat: Low fat diet with fish oil slows growth of human prostate cancer
cells, study suggests - Science Daily, 10/25/11 -
"Men who ate a low-fat diet with fish oil
supplements for four to six weeks before having their prostate removed had
slower cancer-cell growth in their prostate tissue than men who ate a
traditional, high-fat Western diet ... The short-term study also found that
blood obtained from patients after the low-fat, fish oil diet slowed the growth
of prostate cancer cells in a test tube, while
blood from men on the Western diet did not slow cancer growth ... Preclinical
studies suggest that lowering dietary omega-6 fatty acids from corn oil and
increasing omega-3 fatty acids from fish oil decreases the risk of prostate
cancer development and progression," the study states. "We found this diet
intervention resulted in a decrease in omega-6 vs. omega-3 fatty acid ratios in
benign and malignant prostate tissue and a decrease in malignant cell
proliferation" - See
Mega Twin EPA at Amazon.com
and
Jarrow Max DHA at Amazon.com.
Abstracts from this week's
Doctor's Guide Nutrition/Dietetics
plus abstracts from my RSS feeds (Click here
for the journals, the PubMed ones at the top):
Korean Red
Ginseng (Panax ginseng) Improves Insulin Sensitivity in High Fat Fed
Sprague-Dawley Rats - Phytother Res. 2011 Oct 28 -
"Many studies have documented that
ginseng has antidiabetic and antiobesity
effects, but the mechanism of the effects has not been elucidated. The aim of
this study was to determine the effect of Korean red ginseng (KRG, Panax
ginseng) and investigate the mechanism of antidiabetic and antiobesity effects
in obese insulin resistant animal models.
Sprague-Dawley (SD) rats were divided into three groups: a control group (group
I) fed a normal diet, another group (group II) fed only high fat diet (HFD) and
a third group (group III) fed HFD with KRG (200 mg/kg, oral) for 18 weeks ... A
significant weight reduction, especially
fat mass reduction, was observed in the KRG treated group. Increased insulin
sensitivity was found in the KRG treated group. We observed increased insulin
signalling, increased phosphorylation of IR, IRS-1, Akt, and membranous GLUT4 in
muscle by Western blotting assay. In conclusion, KRG may have antidiabetic and
antiobesity effects due to partly increased insulin sensitivity by increased
adipokine and partly enhanced insulin signalling" - See
ginseng at Amazon.com.
Beneficial
effects of catechin-rich green tea and inulin on the body composition of
overweight adults - Br J Nutr. 2011 Oct 28:1-6 -
"The aim of the present study was to investigate whether the effect of
catechin-rich
green tea in combination with inulin affects
body weight and fat mass in obese and overweight adults. A total of thirty
subjects were divided into a control group and an experimental group who
received 650 ml tea or catechin-rich green tea plus
inulin. A reduction of
body weight ( - 1.29 (sem 0.35) kg) and
fat mass (0.82 (sem 0.27) kg) in the experimental group was found after 6 weeks,
and no adverse effects were observed. After refraining from consumption for 2
weeks, sustained effects on body weight and fat mass were observed. We conclude
that continuous intake of catechin-rich green tea in combination with inulin for
at least 3 weeks may be beneficial for weight management" - Note: 1.29 kg
is 2.8 pounds. See
inulin products at Amazon.com
and
green tea extract at Amazon.com.
Lower
concentrations of serum phosphorus within the normal range could be associated
with less calcification of the coronary artery in Koreans with normal renal
function - Am J Clin Nutr. 2011 Oct 26 - "Serum
phosphorus concentrations are associated with
an increased risk of cardiovascular disease (CVD) and mortality in patients with
renal insufficiency. This association has also been reported in Western
individuals without chronic kidney disease (CKD) ... Compared with the group
with a serum phosphorus concentration ≤3.3 mg/dL, the OR of an Agatston score
>100 in individuals with a serum phosphorus concentration >3.6 to ≤3.9 mg/dL was
3.89 (95% CI: 1.43, 10.63; P = 0.008) and in those with a serum phosphorus
concentration >3.9 mg/dL was 3.17 (95% CI: 1.19, 8.41; P = 0.021) ... A lower
concentration of serum phosphorus within the normal range could be associated
with less calcification of the coronary
artery in Koreans with normal renal function"
Atorvastatin
increases exercise leg blood flow in healthy adults - Atherosclerosis. 2011
Oct 4 - "High-dose
atorvastatin augments
exercising leg hyperemia. Statins may mitigate reductions in the exercise
vasodilatory response in humans that are associated with aging and disease"
Effects of
red ginseng supplementation on menopausal symptoms and cardiovascular risk
factors in postmenopausal women: a double-blind randomized controlled trial
- Menopause. 2011 Oct 24 - "The aim of this study was to
evaluate the effects of red ginseng (RG) on
menopausal symptoms and cardiovascular risk
factors in postmenopausal women ... either an RG group (supplemented with 3 g of
RG, including 60 mg of ginsenosides, per day) or a placebo group for 12 weeks
... Significant improvements in the Kupperman index (P = 0.032) and in the
menopause rating scale (P = 0.035) scores were observed in the RG group compared
with the placebo group. Total cholesterol (P = 0.009) and low-density
lipoprotein cholesterol (P = 0.015) significantly decreased in the group
receiving RG. The RG group also showed a significant decrease in carotid
intima-media thickness (P = 0.049). Serum estradiol levels were not influenced
by RG supplementation"
- See
ginseng at Amazon.com.
Dietary
Fiber and Nutrient Density Are Inversely Associated with the Metabolic Syndrome
in US Adolescents - J Am Diet Assoc. 2011 Nov;111(11):1688-95 -
"The overall prevalence of
MetS was 6.4% (n=138). There was a graded inverse association between the
fiber index and MetS (P<0.001) with a threefold difference between the
lowest and highest quintiles (9.2% vs 3.1%). Each quintile increase in the fiber
index was associated with a 20% decrease in MetS (adjusted odds ratio 0.83, 95%
confidence interval 0.68-1.00; P0.043). Neither the saturated fat index (P=0.87)
nor the cholesterol index (P=0.22) was significantly associated with MetS ...
Higher intakes of dietary fiber, but not low intakes of saturated fat or
cholesterol are related to the MetS in adolescents. These findings suggest that
to reduce the risks for MetS in adolescents, it is more important to emphasize a
paradigm that promotes the inclusion of fiber-rich, nutrient-dense, plant-based
foods vs what foods to restrict or exclude as is commonly done when the focus is
on total fat, cholesterol, or saturated fat intake"
Green tea
catechins decrease total and low-density lipoprotein cholesterol: a systematic
review and meta-analysis - J Am Diet Assoc. 2011 Nov;111(11):1720-9 -
"Twenty trials (N=1,415) met all inclusion criteria.
Upon meta-analysis,
GTCs at doses ranging from 145 to 3,000 mg/day
taken for 3 to 24 weeks reduced total (-5.46 mg/dL [-0.14 mmol/L]; 95% CI -9.59
to -1.32) and
LDL cholesterol (-5.30 mg/dL [-0.14 mmol/L];
95% CI -9.99 to -0.62) compared to control. GTCs did not significantly alter HDL
cholesterol (-0.27 mg/dL [-0.007 mmol/L]; 95% CI -1.62 to 1.09) or triglyceride
(3.00 mg/dL [-0.034 mmol/L]; 95% CI -2.73 to 8.73) levels. The consumption of
GTCs is associated with a statistically significant reduction in total and LDL
cholesterol levels; however, there was no significant effect on HDL cholesterol
or triglyceride levels" - See
green tea extract at Amazon.com.
Effects of
added PGX®, a novel functional fibre, on the glycaemic index of starchy foods
- Br J Nutr. 2011 Oct 10:1-4 - "Healthy subjects (n 10)
consumed glucose sugar (50 g in water × 3) and six starchy foods with a range of
GI values (52-72) along with 0 (inert fibre),
2.5 or 5 g granular PGX® dissolved in 250 ml water ...
PGX® significantly reduced the GI of all six foods (P < 0.001), with an
average reduction of 19 % for the 2.5 g dose and 30 % for the 5 g dose,
equivalent to a reducing the GI by 7 and 15 units, respectively. Consuming small
quantities of the novel functional fibre PGX®, mixed with water at the start of
a meal, is an effective strategy to reduce the GI of common foods" - See
Natural Factors, WellBetX
PGX with Mulberry, 180 Capsules at iHerb.
Leukocyte
telomere length and physical ability among Danish Twins age 70+ - Mech
Ageing Dev. 2011 Oct 12 - "Leukocyte
telomere length (LTL) shortens with age and
is potentially a biomarker of human aging. We examined the relation of LTL with
physical ability and cognitive function in 548 same-sex twins from the
Longitudinal Study of Aging Danish Twins ... A random intercept model revealed a
positive, significant association between LTL and physical ability. For every
unit increase in physical ability score, LTL increased by 0.066kb (p=0.01),
equal to approximately three years of age-dependent LTL shortening. A matched
case-co-twin design showed that the group consisting of the twins from each pair
with the longer LTL also displayed better physical ability (p<0.01). Moreover,
the intra-pair difference in LTL was associated with intra-pair difference in
physical ability (p<0.01), confirming the association. However, we found no
association between cognitive function and LTL. The LTL-physical ability
association in the elderly provides further support to the premise that LTL is
an index of somatic fitness in the narrow context of human physical health"
Neat Tech Stuff / "How To's":
Health Focus (Resveratrol):
Specific Recommendations:
News & Research:
-
Red wine
ingredient resveratrol stops breast cancer growth, study suggests - Science
Daily, 9/29/11 - "resveratrol, the "healthy" ingredient
in red wine, stops breast cancer cells from growing by blocking the growth
effects of estrogen ... resveratrol is able to counteract the malignant
progression since it inhibits the proliferation of hormone resistant breast
cancer cells. This has important implications for the treatment of women with
breast cancer whose tumors eventually develop resistance to hormonal therapy ...
Resveratrol is a potential pharmacological tool to be exploited when breast
cancer become resistant to the hormonal therapy"
-
Powerful
antioxidant resveratrol prevents metabolic syndrome in lab tests, study finds
- Science Daily, 9/2/11 - "administering resveratrol to
the young offspring of lab rats after weaning actually prevented the development
of a metabolic syndrome, which is characterized by glucose intolerance, insulin
resistance and higher deposits of abdominal fat"
-
Resveratrol bioavailability boosted by piperine: Study - Nutra USA, 8/16/11
- "Using mice, Prof Ahmad and his co-workers analyzed
the level of exposure and maximum blood levels of resveratrol achieved by
combining 100 milligrams of resveratrol per kilogram of animal with 10 mg/kg of
piperine ... Compared to resveratrol alone, combination with piperine was found
to increase the degree of exposure to 229 percent, and the maximum levels in the
blood by a whopping 1,544 percent" - [Abstract]
- See
piperine at Amazon.com.
-
Curry
spice could offer treatment hope for tendinitis - Science Daily, 8/9/11 -
"Tendons, the tough cords of fibrous connective tissue
that join muscles to bones, are essential for movement because they transfer the
force of muscle contraction to bones. However, they are prone to injury,
particularly in athletes who may overstretch themselves and overuse their
joints. Tendinitis (or tendonitis) is a form of tendon inflammation, which
causes pain and tenderness near to joints and is particularly common in
shoulders, elbows, knees, hips, heels or wrists. Other examples of common tendon
disease include tennis and golfer's elbow and Achilles tendinitis ...
introducing curcumin in the culture system inhibits NF-kB and prevents it from
switching on and promoting further inflammation ... The results follow on from
another study by the Nottingham-Munich collaboration, published in the Journal
of Biological Chemistry earlier this year, demonstrating that a compound found
in red wine could have therapeutic potential for osteoporosis related bone loss
in elderly patients, post-menopausal women and patients with rheumatoid
arthritis ... The research found that resveratrol, a naturally occurring
phytoestrogen found in the skin of red grapes, vines and various other fruits
and nuts, inhibits inflammation in bone cells. Its effects extended to
inhibiting the formation of osteoclasts, giant congregations of blood-derived
cells responsible for bone degeneration, especially in osteoporosis in later
life. Resveratrol prevented NF-kB from switching on to trigger inflammation"
-
Red
wine: Exercise in a bottle? - Science Daily, 6/30/11 -
"a new research study published in the FASEB Journal,
suggests that the "healthy" ingredient in red wine, resveratrol, may prevent the
negative effects that spaceflight and sedentary lifestyles have on people ...
Scientists studied rats that underwent simulated weightlessness by hindlimb tail
suspension and were given a daily oral load of resveratrol. The control group
showed a decrease in soleus muscle mass and strength, the development of insulin
resistance, and a loss of bone mineral density and resistance to breakage. The
group receiving resveratrol showed none of these complications ... This study
also suggests that resveratrol may be able to prevent the deleterious
consequences of sedentary behaviors in humans"
-
Resveratrol studies confirms potential health boost - Science Daily, 6/21/11
- "A comprehensive review of human clinical research on
resveratrol has found it has "anti-aging, anti-carcinogenic, anti-inflammatory
and antioxidant properties," ...this polyphenol -- an antibiotic substance
produced by plants as a defense against microorganisms -- prevents the growth of
some cancers in mice, inhibits enzymes that cause inflammation, shrinks tumors
and increases blood flow, thus reducing cardiovascular diseases. In many cases,
it also extends the life of obese animals. Some evidence also shows that
resveratrol could one day be used to help regulate insulin sensitivity in
diabetic patients"
-
Study unlocks resveratrol’s fat fighting potential - Nutra USA, 5/11/11 -
"It is important to point out that the effective dose in
our experimental design, as well as those used by other authors, is far greater
than the amount usually ingested by humans (100-930 micrograms per day), meaning
that the positive effects of this molecule on body fat would only be achieved by
the intake of resveratrol pills or functional foods enriched with this molecule
... resveratrol could activate a gene called sirtuin1 (Sirt1 – the yeast
equivalent was Sir2), which is also activated during calorie restriction in
various species, including monkeys ... divided 16 rats into two equal groups ...
After six weeks of study, the researchers found that both groups had similar
body weight, but that the resveratrol fed animals has significantly lower fat
tissue levels"
-
Resveratrol may be useful tool for reducing body fat - Science Daily, 3/4/11
- "This thesis shows, on the one hand, the results
obtained after treatment with CLA in hamsters subjected to energy restriction
and, on the other, the effect of resveratrol on accumulated fat and lipolytic
activity in cell cultures of adipocytes of murinae and humans. The results
obtained show that CLA does not foment weight or body fat loss, induced by an
energy restriction diet. Neither does it induce greater lipolysis, nor
improvement in serum parameters, in glucose homeostasis or insulin function to
any greater extent than with the slimming diet itself. On the contrary,
resveratrol reduces the accumulation of triglycerides, in part by activation of
lipolysis, in both the adipocytes of mice and of humans ... For all these
reasons, it can be concluded that, while CLA may not be a molecule useful in
treating obesity, when resveratrol is included in hypocaloric diet, it could
well be a useful tool for reducing body fat" - See
resveratrol products at Amazon.com
and
conjugated linoleic acid at Amazon.com.
-
Young
rats given polyphenols show less endothelial function deterioration with aging
- Science Daily, 1/31/11 - "The endothelium is the inner
lining of our blood vessels and normal functions of endothelial cells include
enabling coagulation, platelet adhesion and immune function. Endothelial
dysfunction is associated with reduced anticoagulant properties and the
inability of arteries and arterioles to dilate fully ... The gradual decrease in
endothelial function over time is a key factor in the development of diseases
associated with ageing, especially cardiovascular disease (CVD). Many
epidemiologic studies suggest protection against CVD from moderate intake of
alcoholic beverages, especially those rich in antioxidants, such as red wine,
which is high in polyphenols (RWPs) ... RWPs and apocynin improved the
endothelial dysfunction, normalized oxidative stress and the expression of the
different proteins. RWPs also improved ageing-related decline in physical
exercise. Thus, intake of RWPs protects against ageing-induced endothelial
dysfunction and decline in physical performance ... RWPs intake had also a
physiological beneficial effect since it improved the physical exercise capacity
of old rats"
-
'Longevity' protein SIRT1 may ward off precursor to prostate cancer -
Science Daily, 1/13/11 - "prostatic intraepithelial
neoplasia (PIN) ... deletion of the Sirt1 gene in mice resulted in PIN lesion
formation associated with reduced autophagy, which is the necessary degradation
of a cell's own components and most likely essential for tumor suppression ...
it tells you that this 'longevity' gene is normally blocking prostate cancer"
- Note: Resveratrol increases Sirt1:
-
Sirtuin1 may boost memory and learning ability; Discovery could lead
to new drugs to fight Alzheimer's, other neurological diseases -
Science Daily, 7/11/10 - "Resveratrol, found
in wine, has been touted as a life-span enhancer because it
activates a group of enzymes known as sirtuins, which have gained
fame in recent years for their ability to slow the aging process.
Now MIT researchers report that Sirtuin1 -- a protein that in humans
is encoded by the SIRT1 gene -- also promotes memory and brain
flexibility ... We have now found that SIRT1 activity also promotes
plasticity and memory"
-
Slowing Aging: Anti-aging Pathway Enhances Cell Stress Response
- Science Daily, 2/19/09 - "The researchers
discovered a new molecular relationship critical to keeping cells
healthy across a long span of time: a protein called SIRT1,
important for caloric restriction and lifespan and activated by
resveratrol, regulates heat shock factor 1 (HSF1), keeping it
active. HSF1 in turn senses the presence of damaged proteins in the
cell and elevates the expression of molecular chaperones to keep a
cell's proteins in a folded, functional state. Regulation of this
pathway has a direct beneficial effect to cells ... decrease in
SIRT1 may help explain why protein misfolding diseases, such as
Alzheimer's, Parkinson's, Huntington's and adult-onset diabetes, are
diseases of aging"
-
Wine Compound Spurs Diabetes Research - WebMD, 11/29/07 -
"In October, Chinese researchers reported
that resveratrol curbs insulin resistance in mice. Insulin is a
hormone that controls blood sugar. Insulin resistance can lead to
type 2 diabetes ... Like resveratrol, the lab-made chemicals
activate a gene called SIRT1, making the diabetic mice more
sensitive to insulin ... the newly developed chemicals are 1,000
times more potent than resveratrol"
-
Resveratrol’s health benefits linked to fat hormone control - Nutra USA,
1/11/11 - "adiponectin has a wide range of beneficial
effects on obesity-related medical complications, and noted that both
adiponectin and resveratrol display anti-obesity, anti-insulin resistance and
anti-aging properties" - [Abstract]
-
Resveratrol shows metabolic benefits for obese: Study - Nutra USA, 10/11/10
- "When human fat cells were exposed to IL-1B, the
researchers noted increases in the secretion of pro-inflammatory compounds,
including IL6, IL8, MCP-1. However, when the cells were simultaneously exposed
to resveratrol, a 16 to 36 percent reduction in the expression of these
cytokines was observed" - [Abstract]
-
Resveratrol May Slow Aging in Humans - Medscape, 8/6/10 -
"the popular plant extract has been shown to prolong
life and reduce the rate of aging in roundworms, fruit flies, and yeast,
apparently because resveratrol affects a gene associated with longevity ...
resveratrol suppressed the generation of “free radicals” -- unstable molecules
known to cause oxidative stress and release pro-inflammatory substances into the
blood, resulting in damage to the blood vessel lining ... resveratrol also
showed suppression of the inflammatory protein tumor necrosis factor, or TNF,
and other compounds that increase blood vessel inflammation and interfere with
insulin action, causing insulin resistance and the risk of developing diabetes"
-
Resveratrol’s anti-inflammatory power gets human data boost - Nutra USA,
8/3/10 - "The results demonstrated in the research are
the first time that such findings have been seen in humans, but are consistent
with potential antiatherogenic and antiaging effects of resvertatrol. Concluding
that PCE “has a comprehensive suppressive effect on oxidative and inflammatory
stress.”"
-[Abstract]
-
Plant
compound resveratrol shown to suppresses inflammation, free radicals in humans
- Science Daily, 7/29/10 - "Resveratrol, a popular plant
extract shown to prolong life in yeast and lower animals due to its
anti-inflammatory and antioxidant properties, appears also to suppress
inflammation in humans ... resveratrol has been shown to prolong life and to
reduce the rate of aging in yeast, roundworms and fruit flies, actions thought
to be affected by increased expression of a particular gene associated with
longevity ... The compound also is thought to play a role in insulin resistance
as well, a condition related to oxidative stress, which has a significant
detrimental effect on overall health ... resveratrol suppressed the generation
of free radicals, or reactive oxygen species, unstable molecules known to cause
oxidative stress and release proinflammatory factors into the blood stream,
resulting in damage to the blood vessel lining ... Blood samples from persons
taking resveratrol also showed suppression of the inflammatory protein tumor
necrosis factor (TNF) and other similar compounds that increase inflammation in
blood vessels and interfere with insulin action, causing insulin resistance and
the risk of developing diabetes"
-
Aging and longevity tied to specific brain region in mice -
Science Daily, 7/28/10 - "mice with
increased brain SIRT1 have internal mechanisms that make them use
energy more efficiently, which helps them move around in search of
food even after a long fast. This increased energy-efficiency could
help delay aging and extend lifespan ... SIRT1 is at the center of a
network that connects metabolism and aging"
-
Sirtuin1 may boost memory and learning ability; Discovery could lead
to new drugs to fight Alzheimer's, other neurological diseases -
Science Daily, 7/11/10 - "Resveratrol, found
in wine, has been touted as a life-span enhancer because it
activates a group of enzymes known as sirtuins, which have gained
fame in recent years for their ability to slow the aging process.
Now MIT researchers report that Sirtuin1 -- a protein that in humans
is encoded by the SIRT1 gene -- also promotes memory and brain
flexibility ... We have now found that SIRT1 activity also promotes
plasticity and memory"
-
Ingredient in red wine may prevent some blinding diseases -
Science Daily, 6/26/10 - "Resveratrol --
found in red wine, grapes, blueberries, peanuts and other plants --
stops out-of-control blood vessel growth in the eye ... There are
three major eye diseases that resveratrol treatment may help:
age-related macular degeneration, diabetic retinopathy and
retinopathy of prematurity"
-
Compound found in red wine neutralizes toxicity of proteins related
to Alzheimer's - Science Daily, 6/22/10 -
"An organic compound found in red wine -- resveratrol -- has the
ability to neutralize the toxic effects of proteins linked to
Alzheimer's disease ... this molecule can target some of these
packing arrangements that are toxic and rearrange them into packing
arrangements that are not toxic. For those forms that are non-toxic,
it doesn't change them"
-
Lemurs lose weight with 'life-extending' supplement resveratrol
- Science Daily, 6/22/10 - "The anti-obesity
properties of resveratrol have been demonstrated for the first time
in a primate ... lemurs eating a diet supplemented with the compound
decreased their energy intake by 13% and increased their resting
metabolic rate by 29% ... a four-week resveratrol supplementation
was associated with a decrease in food intake and a reduction in
seasonal body-mass gain. The response to resveratrol supplementation
also involved significant changes in the animals' body temperatures"
- [Nutra
USA]
-
Polyphenols in red wine and green tea halt prostate cancer growth,
study suggests - Science Daily, 6/9/10 -
"The profound impact that the antioxidants in red wine and green tea
have on our bodies is more than anyone would have dreamt just 25
years ago," Weissmann added. "As long as they are taken in
moderation, all signs show that red wine and green tea may be ranked
among the most potent 'health foods' we know." - See
resveratrol products at Amazon.com
and
green tea extract at Amazon.com.
-
Chronic colitis patients could benefit from resveratrol, says
Spanish study
- Nutra USA 5/4/10 - "dietary administration
of resveratrol reduced the severity and extension of progressive
chronic colonic damage and also significantly counteracted the
clinical signs reducing the inflammatory process" - [Abstract]
-
How red wine may shield brain from stroke damage: researchers
discover pathway in mice for resveratrol's apparent protective
effect - Science Daily, 4/21/10 -
"Two hours after feeding mice a single
modest dose of resveratrol, a compound found in the skins and seeds
of red grapes, the scientists induced an ischemic stroke by
essentially cutting off blood supply to the animals' brains. They
found that the animals that had preventively ingested the
resveratrol suffered significantly less brain damage than the ones
that had not been given the compound ... his study suggests that
resveratrol increases levels of an enzyme (heme oxygenase) already
known to shield nerve cells in the brain from damage. When the
stroke hits, the brain is ready to protect itself because of
elevated enzyme levels. In mice that lacked the enzyme, the study
found, resveratrol had no significant protective effect and their
brain cells died after a stroke"
-
Resveratrol could prove HRT alternative, study - Nutra USA,
11/23/09 - "While genistein, resveratrol and
glycitein all increased apoptosis and reduced the Bcl-2/Bax ratio,
resveratrol reduced this ratio more than either genistein or
glycitein ... Because it (resveratrol) stimulated the transcription
of endogenous estrogen receptor (ER) and proapoptotic effects, this
phytoestrogen is the most promising candidate as an HRT alternative
and chemopreventive reagent for breast cancer ... The researchers
added that their results indicated that daidzein causes a slight
cell-stimulating effect in the absence of E2, which may lead to an
increased risk of breast cancer in postmenopausal women taking
supplements containing these phytoestrogens" - [Abstract]
- See
resveratrol products at Amazon.com.
-
Click here
for Dr. Isadore Rosenfeld on resveratrol on 9/20/09 - 1:32 - Note:
He's recommending 200 mg per day. See
resveratrol products at Amazon.com.
I take two of them, one in the morning and one in the evening.
-
'Red Wine' Chemical May One Day Treat Diabetes - WebMD, 10/9/09
- "Resveratrol, found in red wine, was found
to lower blood sugar levels and improve insulin levels when injected
directly into the brains of mice fed very high-calorie diets in a
study conducted by researchers at the University of Texas
Southwestern Medical Center (UTSW) ... resveratrol does not cross
the blood-brain barrier very efficiently"
-
Future Diabetes Treatment May Use Resveratrol To Target The Brain
- Science Daily, 10/6/09 - "the brain plays
a key role in mediating resveratrol's anti-diabetic actions,
potentially paving the way for future orally-delivered diabetes
medications that target the brain ... Resveratrol activates
sirtuins, a class of proteins that are thought to underlie many of
the beneficial effects of calorie restriction"
-
Science: Resveratrol’s miraculous promise - Nutra USA, 9/14/09
-
Study adds to DSM's resveratrol safety rep - Nutra USA, 8/7/09
-
Scientists Uncork Potential Secret Of Red Wine's Health Benefits
- Science Daily, 7/30/09 - "researchers
administered an inflammatory agent to two groups of mice. One group
was pretreated with resveratrol and the other group was not. The
mice that were not pretreated with resveratrol experienced a strong
inflammatory response, simulating disease in humans, while the group
pretreated with resveratrol was protected from the inflammation. The
scientists then examined the tissues of the mice to determine
exactly how resveratrol was able to protect the mice from
inflammation. They found that resveratrol used a one-two punch to
stop inflammation in the mice by preventing the body from creating
two different molecules known to trigger inflammation, sphingosine
kinase and phospholipase D. This finding suggests that resveratrol
may be harnessable as a treatment for inflammatory diseases and may
also lead to entirely new resveratrol-based drugs that are even more
effective"
-
Red-wine Polyphenol Called Resveratrol Demonstrates Significant
Health Benefits - Science Daily, 6/11/09 -
"The breadth of benefits is remarkable –
cancer prevention, protection of the heart and brain from damage,
reducing age-related diseases such as inflammation, reversing
diabetes and obesity, and many more ... Resveratrol exhibits
therapeutic potential for cancer chemoprevention as well as
cardioprotection ... The simplest explanation is that resveratrol
turns on the cell's own survival pathways, preventing damage to
individual cells ... Further mechanisms help, including removing
very reactive oxidants in the body and improving blood supply to
cells ... Low doses of resveratrol improve cell survival as a
mechanism of cardio- and neuro-protection, while high doses increase
cell death"
-
Two Glasses Of Wine A Day Helps To Reduce Quantity Of Fat In Liver
- Science Daily, 5/12/09 - "Alter four
weeks, samples of liver and blood were taken from individuals of the
three different groups for their subsequent analysis. It was shown
that in the third group - the one treated with resveratrol -,
infiltration of liver fat dropped in comparison with group two.
After this and a number of other analyses, the researcher concluded
that resveratrol reduces the severity of ESNA in models with rats
because, in the animals treated with resveratrol, the percentage of
the cells of affected liver cells was notably less in non-treated
animals"
-
Grape Extracts May Be Effective Against Harmful Gut Bacteria -
Science Daily, 3/4/09 - "H. pylori is the
bacterial agent most commonly associated with peptic ulcers,
gastritis, mucosa-associated lymphoid tissue lymphoma, and gastric
cancer ... The antibacterial effects of extracts from red, white,
black and muscadine grapes as well as the pure compounds
resveratrol, ellagic acid, and myricetin were tested for anti-H.
pylori activity using agar dilution, laser scanning microscopy and
cell proliferation. Following 24 hour treatment, results showed that
muscadine grape skin extract had the highest anti-H. pylori effect,
followed by muscadine grape synergy and seed extract. Additionally,
two of the three compounds, resveratrol and ellagic acid, also
inhibited H. pylori" - See
grape seed extract at Amazon.com
and
resveratrol products at Amazon.com.
-
Slowing Aging: Anti-aging Pathway Enhances Cell Stress Response
- Science Daily, 2/19/09 - "The researchers
discovered a new molecular relationship critical to keeping cells
healthy across a long span of time: a protein called SIRT1,
important for caloric restriction and lifespan and activated by
resveratrol, regulates heat shock factor 1 (HSF1), keeping it
active. HSF1 in turn senses the presence of damaged proteins in the
cell and elevates the expression of molecular chaperones to keep a
cell's proteins in a folded, functional state. Regulation of this
pathway has a direct beneficial effect to cells ... decrease in
SIRT1 may help explain why protein misfolding diseases, such as
Alzheimer's, Parkinson's, Huntington's and adult-onset diabetes, are
diseases of aging"
-
Scientists Find a Possible Cause of Aging - NYTimes.com,
11/26/08 - "A new insight into the reason
for aging has been gained by scientists trying to understand how
resveratrol, a minor ingredient of red wine, improves the health and
lifespan of laboratory mice. They believe that the integrity of
chromosomes is compromised as people age, and that resveratrol works
by activating a protein known as sirtuin that restores the
chromosomes to health ... Dr. Sinclair has been taking large daily
doses of resveratrol since he and others discovered five years ago
that it activated sirtuin. “I’m still taking it and I feel great,”
he said, “but it’s too early to say if I’m young for my age.""
-
Drug 'tricks
body to lose weight' - BBC News, 11/5/08 -
"The drug SRT1720 - a chemical cousin of red
wine extract resveratrol - targets the protein SIRT1, which is
thought to combat ageing ... The French team from the University
Louis Pasteur became interested in the SIRT1 protein after earlier
studies showing resveratrol countered some effects of a high-calorie
diet via SIRT1" - See
resveratrol products at Amazon.com.
-
Resveratrol Prevents Fat Accumulation In Livers Of 'Alcoholic' Mice
- Science Daily, 10/14/08 - "The
accumulation of fat in the liver as a result of chronic alcohol
consumption could be prevented by consuming resveratrol, according
to a new study with mice. The research found that resveratrol
reduced the amount of fat produced in the liver of mice fed alcohol
and, at the same time, increased the rate at which fat within the
liver is broken down" - [WebMD]
-
Red Wine May Lower Lung Cancer Risk - Science Daily, 10/7/08 -
"there was on average a two percent lower
lung cancer risk associated with each glass of red wine consumed per
month ... Red wine is known to contain high levels of antioxidants.
There is a compound called resveratrol that is very rich in red wine
because it is derived from the grape skin. This compound has shown
significant health benefits in preclinical studies" - [WebMD]
-
Plant Antioxidant May Protect Against Radiation Exposure -
Science Daily, 9/23/08 - "Resveratrol, the
natural antioxidant commonly found in red wine and many plants, may
offer protection against radiation exposure ... Currently there are
no drugs on the market that protect against or counteract radiation
exposure"
-
Resveratrol May Prevent Breast Cancer - WebMD, 7/7/08 -
"when the body's system for processing
estrogen gets out of balance, dangerous estrogen metabolites appear.
These toxic compounds react with DNA in breast cells and jump-start
the growth of tumors ... resveratrol decreases the processing of
estrogen into these dangerous compounds. Perhaps more importantly,
it also blocks interactions between estrogen metabolites and
cellular DNA ... And that's not all. Rogan's team finds that
resveratrol increases production of an enzyme that destroys
dangerous estrogen metabolites" - [Science
Daily] - See
resveratrol products at Amazon.com.
-
Resveratrol, Found In Red Wine, Wards Off Effects Of Age On Heart,
Bones, Eyes And Muscle - Science Daily, 7/3/08 -
"This study, conducted and supported in part
by the National Institute on Aging (NIA), part of the National
Institutes of Health, is a follow-up to 2006 findings that
resveratrol improves health and longevity of overweight, aged mice.
The report confirms previous results suggesting the compound, found
naturally in foods like grapes and nuts, may mimic, in mice, some of
the effects of dietary or calorie restriction, the most effective
and reproducible way found to date to alleviate age-associated
disease in mammals"
-
Fountain of youth? Red wine gives up secrets - MSNBC, 7/3/08 -
"Most of mice given resveratrol did not live
longer than other mice but were far more healthy in several
important measures"
-
Can Red Wine Help You Live Longer? - WebMD, 6/6/08
-
Red Wine's Resveratrol May Help Battle Obesity - Science Daily,
6/16/08 - "resveratrol inhibited the pre-fat
cells from increasing and prevented them from converting into mature
fat cells. Also, resveratrol hindered fat storage. Most interesting,
according to Fischer-Posovszky, was that resveratrol reduced
production of certain cytokines (interleukins 6 and 8), substances
that may be linked to the development of obesity-related disorders,
such as diabetes and clogged coronary arteries. Also, resveratrol
stimulated formation of a protein known to decrease the risk of
heart attack. Obesity decreases this substance, called adiponectin"
- [WebMD]
-
Substance In Red Wine, Resveratrol, Found To Keep Hearts Young -
Science Daily, 6/4/08 - "Resveratrol is
active in much lower doses than previously thought and mimics a
significant fraction of the profile of caloric restriction at the
gene expression level ... In animals on a restricted diet, 90
percent of those heart genes experienced altered gene expression
profiles, while low doses of resveratrol thwarted age-related change
in 92 percent. The new findings, say the study's authors, were
associated with prevention of the decline in heart function
associated with aging" - See
resveratrol products at Amazon.com.
-
Low-dose resveratrol may slow ageing: for mice at least - Nutra
USA, 6/4/08 - "animals in the
calorie-restriction and low-dose resveratrol groups had altered gene
expression profiles in 90 and 92 per cent, respectively, in the
heart ... In short, a glass of wine or food or supplements that
contain even small doses of resveratrol are likely to represent "a
robust intervention in the retardation of cardiac ageing,"" -
See
Jarrow Resveratrol 100 at iHerb.
-
Red wine may protect
heart from aging’s toll - MSNBC - 6/3/08 -
"Resveratrol at low doses can retard some
aspects of the aging process, including heart aging, and it may do
so by mimicking some of the effects of caloric restriction, which is
known to retard aging in several tissues and extend life span"
-
Red Wine Could
Benefit Patients With Diabetes - Medscape, 5/16/08 - "New
research suggests that resveratrol, a chemical commonly found in red
wine, has the ability to lower blood-sugar levels, but it might also
produce certain unpleasant adverse effects ... The concern is that
you could lower glucose in diabetics but at the same time. . .
[lower] glucose levels in the brain or in other important tissues"
- Does that last part make sense? Is there anything that
selectively lowers blood-sugar, i. e., lowers the blood without the
brain? And isn't it the high blood sugar in the brain that they
believe is the reason the Alzheimer's rate is so high in diabetics?
And isn't it the advance glycation end products that are partly
responsible for damage to important tissues? Sounds like a biased
article to me.
-
Mounting Evidence Shows Red Wine Antioxidant Kills Cancer -
Science Daily, 3/25/08 - "Rochester
researchers showed for the first time that a natural antioxidant
found in grape skins and red wine can help destroy pancreatic cancer
cells by reaching to the cell's core energy source, or mitochondria,
and crippling its function ... The new study also showed that when
the pancreatic cancer cells were doubly assaulted -- pre-treated
with the antioxidant, resveratrol, and irradiated -- the combination
induced a type of cell death called apoptosis, an important goal of
cancer therapy" - [WebMD]
-
Grape Skin Compound Fights The Complications Of Diabetes -
Science Daily, 3/20/08 - "resveratrol, a
compound present naturally in grape skin, can protect against the
cellular damage to blood vessels caused by high production of
glucose in diabetes"
-
Chemical In Red Wine, Fruits And Vegetables Counters Unhealthy
Effects Of High-fat Foods - Science Daily, 1/2/08 -
"consuming polyphenols (natural compounds in
red wine, fruits, and vegetables) simultaneously with high-fat foods
may reduce health risks associated with these foods"
-
Wine Compound Spurs Diabetes Research - WebMD, 11/29/07 -
"In October, Chinese researchers reported
that resveratrol curbs insulin resistance in mice. Insulin is a
hormone that controls blood sugar. Insulin resistance can lead to
type 2 diabetes ... Like resveratrol, the lab-made chemicals
activate a gene called SIRT1, making the diabetic mice more
sensitive to insulin ... the newly developed chemicals are 1,000
times more potent than resveratrol"
-
Report: Two resveratrol supplements mislabeled - USATODAY.com,
11/14/07 - "Life Extension Resveratrol Caps
are supposed to contain 20 milligrams of resveratrol per capsule but
have about 5 milligrams, the report says. Resvert, distributed by
SupplementSpot (formerly known as Young Again Nutrients), had only
58% of its promised 25 milligrams of resveratrol per capsule"
-
Resveratrol review - ConsumerLab.com, 11/13/07 -
"But ConsumerLab.com found two supplements
to provide only 27% and 58% of their listed amounts of resveratrol.
A third product boasted several hundred milligrams of a red wine
grape complex but actually contained only two milligrams of
resveratrol. Across thirteen products, daily doses ranged from just
1 milligram to as much as 1,000 milligrams of resveratrol. Prices
ranged several fold" - Note: I get the paid version and Life
Extension® Resveratrol Caps and Resvert™ 100 mg proanthrocyanadins
with 25 mg resveratrol were not approved. Jarrow Resveratrol 100™ is
what I take and it was approved.
-
Red Wine And Grape Juice Help Defend Against Food-borne Diseases,
Study Suggests - Science Daily, 10/11/07
-
Red Wine Compound May Curb Diabetes - WebMD, 10/2/07 -
"Resveratrol curbs insulin resistance in
mice ... According to our findings, people might need to drink about
three liters of red wine each day to get sufficient resveratrol --
about 15 milligrams -- for its biological effects"
-
Red Wine Compound Shown To Prevent Prostate Cancer - Science
Daily, 8/31/07 - "n the study
resveratrol-fed mice showed an 87 percent reduction in their risk of
developing prostate tumors that contained the worst kind of
cancer-staging diagnosis ... Other mice in the study, those fed
resveratrol but still developed a less-serious form of prostate
cancer, were 48 percent more likely to have their tumor growth
halted or slowed when compared to mice who did not consume the
compound ... A cancer prevention researcher lives for these days
when they can make that kind of finding" - See
resveratrol products at iHerb.
-
Red Wine Protects The Prostate - Science Daily, 5/25/07 -
"men who drink an average of four to seven
glasses of red wine per week are only
52% as likely to be diagnosed with
prostate cancer as those who do not drink red wine ... when
white wine was compared with red, red had the most benefit ... But
much of the speculation focuses on chemicals—including various
flavonoids and resveratrol—missing from other alcoholic
beverages"
-
Resveratrol Content Varies Among Red Wines - Science Daily, 4/19/07
-
Life-extending compound may be great news -- for mice - CNN,
12/21/06 -
"In one study, scientists provided mice a
high-calorie, high-fat diet and then gave half of the animals
resveratrol. At 114 weeks -- old age for mice -- less than a third
of the mice taking resveratrol died. More than half of the mice who
did not take resveratrol died. In another study, mice who took
resveratrol lost weight, increased metabolism and doubled their
exercise endurance"
-
Resveratrol could counter metabolic diseases, animal study - Nutra USA,
12/15/06
-
Review Article:
Resveratrol - Consumerlab.com, 11/30/06
-
Red Wine Ingredient Increases Endurance, Study Shows - New York
Times, 11/16/06 -
"Resveratrol makes you look like a trained
athlete without the training"
- Healthy
Life Prolonged in Mice - Medscape, 11/3/06 -
"In addition to extending their lives,
resveratrol also kept the mice fit and healthy in their old age"
- Wine
Ingredient May Nix Fat's Effects - WebMD, 11/1/06 -
"A new study shows obese, middle-aged mice fed a fatty
diet supplemented with resveratrol, an antioxidant found in red
wine, seemed to be spared most of the unhealthy effects of their
extra weight and lived longer than those fed the same fat-laden diet
without resveratrol"
-
One for the Ages: A Prescription That May Extend Life - New York
Times, 10/31/06 - "One leading candidate, a
newly synthesized form of resveratrol — an antioxidant present in
large amounts in red wine — is already being tested in patients. It
may eventually be the first of a new class of anti-aging drugs.
Extrapolating from recent animal findings, Dr. Richard A. Miller, a
pathologist at the University of Michigan, estimated that a pill
mimicking the effects of calorie restriction might increase human
life span to about 112 healthy years"
- Red
Wine vs. Colon Cancer - WebMD, 10/24/06 -
"3% of red wine drinkers had such abnormal growths, compared with
nearly 9% of white wine drinkers and almost 10% of teetotalers ...
they suggest that a compound found in grapes and red wine – the
antioxidant resveratrol -- may cut the odds of getting abnormal
colon growths that can become cancerous"
-
Resveratrol in red wine could cut colorectal cancer risk - Nutra
USA, 10/23/06 - "Drinking more than three
glasses of red wine a week could cut the risk of colorectal cancer
by almost 70 per cent ... the active component in wine that may be
behind the apparent benefits is most likely resveratrol"
-
Longevity Genes and Caloric restriction
- Life Extension Magazine, 7/06 - "Humans
seeking to slow aging and reduce degenerative disease risk may
consider reducing food intake and ingesting 20-40 mg of resveratrol
and 250-850 mg of metformin each day"
- Red
Wine Ingredient May Delay Aging - WebMD, 2/10/06 -
"Researchers found adding resveratrol, an organic
compound found in grapes and particularly in red wine, to the daily
diet of short-lived fish prolonged their lifespan and delayed the
onset of age-related memory and other problems"
-
Natural Compound Prolongs Lifespan And Delays Onset Of Aging-related
Traits In A Short-lived Vertebrate - Science Daily, 2/7/06 -
"The researchers added resveratrol to daily
fish food and found that this treatment increased longevity and also
retarded the onset of aging-related decays in memory and muscular
performance"
-
Compound In Wine Reduces Levels Of Alzheimer's Disease-causing
Peptides
- Science Daily, 11/4/05 - "resveratrol, a
compound found in grapes and red wine, lowers the levels of the
amyloid-beta peptides which cause the telltale senile plaques of
Alzheimer's disease ... Resveratrol in grapes may never reach the
concentrations required to obtain the effect observed in our
studies"
-
Resveratrol could prevent ‘flu epidemics - Nutra USA, 5/24/05
-
Red Wine Lovers, Take Heart: More Evidence Points To The Drink's
Cardiac Health Benefits - Science Daily, 12/10/04 -
"a well-known antioxidant found in red wine, called resveratrol, may
benefit heart tissue by limiting the effects of a condition called
cardiac fibrosis"
-
Resveratrol linked to longer life - Nutra USA, 7/19/04
-
Daily Glass of Red Wine May Cut Risk of Developing Prostate Cancer
- Doctor's Guide, 9/23/04 - "men who
consumed four or more glasses of red wine per week reduced their
risk of prostate cancer by 50 percent ... That compound, Stanford
and colleagues believe, may be an antioxidant called resveratrol,
which is abundant in the skins of red grapes but much less so in the
skins of white grapes"
- Does red wine hold
the secret to long life? - MSNBC, 7/15/04 -
"resveratrol acted on fruit flies and worms in the same way as a
method known to extend the life of animals ... We found this
chemical that can extend the life span of every organism we give it
to"
-
Study Identifies Genetics Of Fat Metabolism, Red Wine Link
- Science Daily, 7/9/04 - "When cells were
exposed to resveratrol, our studies showed a pretty dramatic
reduction in the conversion to fat cells and a lesser but still
significant increase in the mobilization of existing fat, or the
rate at which the cells metabolized stored fat"
-
Fruits Offer Powerful Protection From Skin Cancer
- Intelihealth, 10/30/03 - "Resveratrol
significantly inhibited UVB-mediated increases in skin thickness and
edema; epidermal cyclooxygenase (COX-2); ornithine decarboxylase
(ODC) enzyme and protein levels; and protein levels of proliferating
cell nuclear antigen (PCNA), all of which are established markers of
tumor promotion. Resveratrol also further stimulated a UVB-mediated
increase in p53 protein levels and was found to inhibit UVB
exposure-mediated increases in cell cycle promoting signals
including the activation of cell division"
- Red
Wine Ingredient May Fight COPD - WebMD, 10/27/03 -
"resveratrol, a compound found in the skins of red fruits such as
grapes, may slow down the inflammatory process involved in the lung
disease
COPD (chronic obstructive pulmonary
disease)"
-
“Grape Expectations”: Lengthen Lifetime with Red Wine?
- Physician's Weekly, 9/15/03 -
"Resveratrol, a molecule that exists naturally in grapes and red
wine, was shown to extend the life span of yeast cells (polyphenols)
by up to 80%. The researchers plan to examine resveratrol's effect
in multi-cellular organisms such as worms, fruit flies, and
eventually humans"
-
Drinking Red Wine May Slow Aging - WebMD, 8/25/03 -
"resveratrol mimics calorie restriction in yeast -- activating
enzymes that slow aging, increasing the stability of DNA, hence
extending lifespan by as much as 70% ... Researchers now hope to
eventually test how resveratrol works in other subjects, including
humans"
Abstracts:
-
Low-Dose
Dietary Resveratrol Has Differential Effects on Colorectal Tumorigenesis in
Adiponectin Knockout and Wild-Type Mice - Nutr Cancer. 2011 Sep 29 -
"Obesity is associated with a decrease in the
antiinflammatory hormone, adiponectin, and increases in the circulating
concentrations of multiple proinflammatory cytokines. These changes contribute
to colon tumorigenesis. Resveratrol increases adiponectin production in
adipocytes and attenuates the development of colon cancer. Thus, we hypothesized
that adiponectin is an integral component of the mechanism by which resveratrol
antagonizes colorectal tumorigenesis. To investigate this, we induced
tumorigenesis in adiponectin knockout (KO) and wild-type (Wt) C57BL/6 mice
through combined azoxymethane and dextran sodium sulfate treatment during which
mice were fed a high-fat, lard-based diet, or the same diet containing 20 mg/kg
resveratrol. After 14 wk on diet, Wt mice gained more weight and, on a
percentage basis, had higher fat mass and lower lean mass than KO mice.
Resveratrol tended to attenuate this response in male Wt mice. Resveratrol also
tended to reduce aberrant crypt foci development and decrease circulating
interleukin 6 and insulin concentrations in male but not female Wt mice. Taken
together, resveratrol improved overall health of obese Wt but not KO mice as
hypothesized with a differential sex response"
-
Repeated and
long-term treatment with physiological concentrations of resveratrol promotes NO
production in vascular endothelial cells - Br J Nutr. 2011 Jul 27:1-7 -
"Repeated treatment with resveratrol for 5 d resulted in
an increase in endothelial NO synthase (eNOS) protein content and NO production
in human umbilical vein endothelial cell (HUVEC) in a concentration-dependent
manner. A significant increase in functional eNOS protein content was observed
with resveratrol, even at 50 nm. In contrast, eNOS phosphorylation was not
stimulated and inducible NO synthase (iNOS) was not detected after resveratrol
treatment. Both eNOS protein and mRNA expression were promoted by 50
nm-resveratrol in a time-dependent manner. Increased eNOS mRNA expression in
response to resveratrol was not decreased by an oestrogen receptor (ER)
antagonist ICI182780, a PPARα inhibitor MK886 or a sirtuin inhibitor Salermide.
However, a combination of ICI182780 and MK886 significantly inhibited
resveratrol-induced eNOS mRNA expression. Salermide had no effect even in the
presence of ICI182780 or MK886. These results demonstrate that resveratrol
within the physiological range increases eNOS mRNA and protein expression
through ER and PPARα activation, thereby promoting NO production in endothelial
cells. eNOS induction might result from the accumulative effect of nanomolar
concentrations of resveratrol. The present study results can account in part for
the observation that cardiovascular benefits of red wine are experienced with
routine consumption, but not with acute consumption"
-
Resveratrol
attenuates steatosis in obese Zucker rats by decreasing fatty acid availability
and reducing oxidative stress - Br J Nutr. 2011 Jun 28:1-9 -
"Resveratrol reduced liver weight and TAG content. It
did not modify the activity of lipogenic enzymes but it did increase CPT-Ia and
ACO activities. NEFA and ALP were reduced in both resveratrol-treated groups.
AST/GOT was reduced only by the lowest dose. ALT/GPT, TAG and adiponectin
remained unchanged. Resveratrol reduced liver oxidative stress. This study
demonstrates that resveratrol can protect the liver from NAFLD by reducing fatty
acid availability. Moreover, resveratrol also protects liver from oxidative
stress"
-
Resveratrol
Induces p53-Independent, XIAP-Mediated Bax Oligomerization on Mitochondria to
Initiate Cytochrome c Release and Caspase Activation - J Biol Chem. 2011 Jun
28 - "Together, our findings characterize the molecular
mechanisms of resveratrol-induced caspase activation, and subsequent apoptosis
in cancer cells"
-
Resveratrol
promotes osteogenesis of human mesenchymal stem cells by up-regulating RUNX2
gene expression via SIRT1/FOXO3A axis - J Bone Miner Res. 2011 Jun 28 -
"Taken together, our results describe a novel mechanism
of resveratrol on promoting osteogenesis of human mesenchymal stem cells by
up-regulating RUNX2 gene expression via SIRT1/FOXO3A axis"
-
Resveratrol
enhances the expression of death receptor Fas/CD95 and induces differentiation
and apoptosis in anaplastic large-cell lymphoma cells - Cancer Lett. 2011
Jun 15 - "Resveratrol inhibited growth and induced
cellular differentiation, as demonstrated by morphological changes and elevated
expression of T cell differentiation markers CD2, CD3, and CD8. Resveratrol also
triggered cellular apoptosis, as demonstrated by morphological observations, DNA
fragmentation, and cell cycle analyses. Further, the surface expression of the
death receptor Fas/CD95 was increased by resveratrol treatment. Our data suggest
that resveratrol may have potential therapeutic value for ALCL"
-
Oral
Resveratrol Therapy Inhibits Cancer-Induced Skeletal Muscle and Cardiac Atrophy
In Vivo - Nutr Cancer. 2011 Jun 8:1 - "The mechanism
by which cancer mediates muscle atrophy has been delineated in the past 3
decades and includes a prominent role of tumor-derived cytokines, such as IL-6,
TNFα, and IL-1. These cytokines interact with their cognate receptors on muscle
to activate the downstream transcription factor NF-κB and induce sarcomere
proteolysis. Experimentally, inhibiting NF-κB signaling largely prevents
cancer-induced muscle wasting, indicating its prominent role in muscle atrophy.
Resveratrol, a natural phytoalexin found in the skin of grapes, has recently
been shown to inhibit NF-κB in cancer cells, which led us to hypothesize that it
might have a protective role in cancer cachexia. Therefore, we investigated
whether daily oral resveratrol could protect against skeletal muscle loss and
cardiac atrophy in an established mouse model. We demonstrate resveratrol
inhibits skeletal muscle and cardiac atrophy induced by C26 adenocarcinoma
tumors through its inhibition of NF-κB (p65) activity in skeletal muscle and
heart. These studies demonstrate for the first time the utility of oral
resveratrol therapy to provide clinical benefit in cancer-induced atrophy
through the inhibition of NF-κB in muscle. These findings may have application
in the treatment of diseases with parallel pathophysiologies such as muscular
dystrophy and heart failure"
-
Resveratrol
Triggers Apoptosis Through Regulating Ceramide Metabolizing Genes in Human K562
Chronic Myeloid Leukemia Cells - Nutr Cancer. 2011 Apr 14:1 -
"There were synergistic cytotoxic and apoptotic effects
of resveratrol with coadministration of C8:ceramide, PDMP, and SK-1 inhibitor.
Interestingly, there were also significant increases in expression levels of
LASS genes and decreases in expression levels of GCS and SK-1 in K562 cells in
response to resveratrol. Our data, in total, showed for the first time that
resveratrol might kill CML cells through increasing intracellular generation and
accumulation of apoptotic ceramides"
-
A Dietary
Mixture Containing Fish Oil, Resveratrol, Lycopene, Catechins, and Vitamins E
and C Reduces Atherosclerosis in Transgenic Mice - J Nutr. 2011 Mar 16 -
"Chronic inflammation and proatherogenic lipids are
important risk factors of cardiovascular disease (CVD). Specific dietary
constituents such as polyphenols and fish oils may improve cardiovascular risk
factors and may have a beneficial effect on disease outcomes ... AIDM was
evaluated in an inflammation model, male human C-reactive protein (CRP)
transgenic mice, and an atherosclerosis model, female ApoE*3Leiden transgenic
mice. Two groups of male human-CRP transgenic mice were fed AIDM [0.567% (wt:wt)
powder and 0.933% (wt:wt oil)] or placebo for 6 wk. The effects of AIDM on basal
and IL-1β-stimulated CRP expression were investigated. AIDM reduced
cytokine-induced human CRP and fibrinogen expression in human-CRP transgenic
mice. In the atherosclerosis study, 2 groups of female ApoE*3Leiden transgenic
mice were fed an atherogenic diet supplemented with AIDM [0.567% (wt:wt) powder
and 0.933% (wt:wt oil)] or placebo for 16 wk. AIDM strongly reduced plasma
cholesterol, TG, and serum amyloid A concentrations compared with placebo.
Importantly, long-term treatment of ApoE*3Leiden mice with AIDM markedly reduced
the development of atherosclerosis by 96% compared with placebo. The effect on
atherosclerosis was paralleled by a reduced expression of the vascular
inflammation markers and adhesion molecules inter-cellular adhesion molecule-1
and E-selectin. Dietary supplementation of AIDM improves lipid and inflammatory
risk factors of CVD and strongly reduces atherosclerotic lesion development in
female transgenic mice" - See
resveratrol products at Amazon.com,
Mega Twin EPA at Amazon.com
and
Jarrow Max DHA at Amazon.com,
Jarrow Formulas, CarotenALL at Amazon.com,
green tea extract at Amazon.com
and
Jarrow FamilE (contains all eight members of the vitamin E family, includes
Tocomin) at Amazon.com.
-
Resveratrol
improves insulin sensitivity, reduces oxidative stress and activates the Akt
pathway in type 2 diabetic patients - Br J Nutr. 2011 Mar 9:1-7 -
"After an initial general examination (including blood
chemistry), nineteen patients enrolled in the 4-week-long double-blind study
were randomly assigned into two groups: a resveratrol group receiving oral 2 × 5
mg resveratrol and a control group receiving placebo. Before and after the
second and fourth weeks of the trial, insulin resistance/sensitivity,
creatinine-normalised ortho-tyrosine level in urine samples (as a measure of
oxidative stress), incretin levels and phosphorylated protein kinase B
(pAkt):protein kinase B (Akt) ratio in platelets were assessed and statistically
analysed. After the fourth week, resveratrol significantly decreased insulin
resistance (homeostasis model of assessment for insulin resistance) and urinary
ortho-tyrosine excretion, while it increased the pAkt:Akt ratio in platelets. On
the other hand, it had no effect on parameters that relate to β-cell function
(i.e. homeostasis model of assessment of β-cell function). The present study
shows for the first time that resveratrol improves insulin sensitivity in
humans, which might be due to a resveratrol-induced decrease in oxidative stress
that leads to a more efficient insulin signalling via the Akt pathway"
-
Resveratrol
improves hippocampal atrophy in chronic fatigue mice by enhancing neurogenesis
and inhibiting apoptosis of granular cells - Biol Pharm Bull.
2011;34(3):354-9 - "Neuroimaging evidence showed
structural and/or functional abnormalities existing in the central nervous
system, especially the hippocampus, in chronic fatigue syndrome (CFS) patients.
However, its pathophysiologic mechanisms are unclear in part due to the lack of
an applicable animal model. We established a chronic fatigue murine model by six
repeated injections of Brucella abortus antigen to mice, which was manifested as
reduced daily running activity and hippocampal atrophy. Thereafter, resveratrol,
a polyphenolic activator of sirtuin 1, was used for treatment in this model.
Daily running activity was increased by more than 20%, and the hippocampus was
enlarged after 4-week resveratrol therapy. Furthermore, resveratrol inhibited
neuronal apoptosis and expression of hippocampal acetylated p53 in the fatigue
mice. Resveratrol also improved neurogenesis and expression of brain-derived
neurotrophic factor mRNA in the hippocamous. We concluded that repeated
injection of B. abortus antigen could induce hypoactivity and hippocampal
atrophy in mice. Resveratrol may be effective for improving fatigue symptoms and
enlarging the atrophic hippocampus by repressing apoptosis and promoting
neurogenesis"
-
Pterostilbene Is More Potent than Resveratrol in Preventing Azoxymethane
(AOM)-Induced Colon Tumorigenesis via Activation of the NF-E2-Related Factor 2
(Nrf2)-Mediated Antioxidant Signaling Pathway - J Agric Food Chem. 2011 Feb
28 - "Inflammatory bowel diseases have been a risk
factor of
colorectal cancer (CRC). The reactive oxygen
species (ROS) generated by inflammatory cells create oxidative stress and
contribute to neoplastic transformation, proliferation, and even metastasis.
Previously, resveratrol (RS) and pterostilbene (PS) had been reported to prevent
chemical-induced colon carcinogenesis by anti-inflammatory and pro-apoptotic
properties ... Administrations of PS can be more effective than RS in reducing
AOM-induced formation of aberrant crypt foci (ACF), lymphoid nodules (LNs), and
tumors. We also find that PS is functioning more effectively than RS to reduce
nuclear factor-κB (NF-κB) activation by inhibiting the phosphorylation of
protein kinase C-β2 (PKC-β2) and decreasing downstream target gene expression,
including inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and
aldose reductase (AR) in mouse colon stimulated by AOM. Moreover, administration
of RS and PS for 6 weeks significantly enhanced expression of antioxidant
enzymes, such as heme oxygenase-1 (HO-1) and glutathione reductase (GR), via
activation of NF-E2-related factor 2 (Nrf2) signaling. When the above findings
are taken together, they suggest that both stilbenes block cellular inflammation
and oxidative stress through induction of HO-1 and GR, thereby preventing
AOM-induced colon carcinogenesis. In comparison, PS was a more potent
chemopreventive agent than RS for the prevention of colon cancer. This is also
the first study to demonstrate that PS is a Nrf2 inducer and AR inhibitor in the
AOM-treated colon carcinogenesis model" - See
pterostilbene at iHerb.
-
A
Resveratrol and Polyphenol Preparation Suppresses Oxidative and Inflammatory
Stress Response to a High-Fat, High-Carbohydrate Meal - J Clin Endocrinol
Metab. 2011 Feb 2 - "High-fat, high-carbohydrate (HFHC)
meals are known to induce oxidative and inflammatory stress, an increase in
plasma endotoxin concentrations, and an increase in the expression of suppressor
of cytokine signaling-3 (SOCS-3) ... A supplement containing resveratrol and
muscadine polyphenols suppresses the increase in oxidative stress,
lipopolysaccharide and LBP concentrations, and expression of TLR-4, CD14, IL-1β
and SOCS-3 in mononuclear cells after an HFHC meal. It also stimulates specific
Nrf-2 activity and induces the expression of the related antioxidant genes,
NQO-1 and GST-P1. These results demonstrate the acute antioxidant and
antiinflammatory effects of resveratrol and polyphenolic compounds in humans in
the postprandial state"
-
RESVERATROL-MEDIATED SIRT-1 INTERACTIONS WITH P300 MODULATE RANKL-ACTIVATION OF
NF-kappaB SIGNALING AND INHIBIT OSTEOCLASTOGENESIS IN BONE-DERIVED CELLS - J
Biol Chem. 2011 Jan 14 - "Resveratrol is a polyphenolic
phyto-estrogen that has been shown to exhibit potent anti-oxidant,
anti-inflammatory and anti-catabolic properties. Increased osteoclastic and
decreased osteoblastic activity result in bone resorption and loss of bone mass.
These changes have been implicated in pathological processes in rheumatoid
arthritis (RA) and osteoporosis. Receptor activator of NF-kappaB ligand (RANKL),
a member of the TNF superfamily, is a major mediator of bone loss. In this study
we investigated the effects of resveratrol on RANKL during bone morphogenesis in
high-density bone cultures in vitro ... Treatment with RANKL induced formation
of TRAP positive multinucleated cells that exhibited morphological features of
osteoclasts. RANKL induced NF-kappaB activation, whereas pre-treatment with
resveratrol completely inhibited this activation, suppressed the activation of
IkappaBα kinase, IkappaBα phosphorylation and degradation ... Resveratrol
inhibited RANKL-induced acetylation and nuclear translocation of NF-kappaB in a
time and concentration dependent manner. In addition, activation of Sirt-1 (a
histone deacetylase) by resveratrol induced Sirt-1-p300 association in
bone-derived and pre-osteoblastic cells, leading to deacetylation of
RANKL-induced NF-kappaB, inhibition of NF-kappaB transcriptional activation and
osteoclastogenesis. Co-treatment with resveratrol activated the bone
transcription factor Cbfa-1, Sirt-1 and induced the formation of
Sirt-1/Cbfa-1-complexes. Overall, these results demonstrate that
resveratrol-activated Sirt-1 plays pivotal roles in regulating the balance
between osteoclastic versus osteoblastic activity result in bone formation in
vitro thereby highlighting its therapeutic potential for treating osteoporosis
and RA-related bone loss"
-
Up-regulation of Adiponectin by Resveratrol: THE ESSENTIAL ROLES OF THE
Akt/FOXO1 AND AMP-ACTIVATED PROTEIN KINASE SIGNALING PATHWAYS AND DsbA-L - J
Biol Chem. 2011 Jan 7 - "RSV promotes adiponectin
multimerization in 3T3-L1 adipocytes via a Sirt1-independent mechanism. In
addition, we show that the stimulatory effect of RSV is regulated by both the
Akt/FOXO1 and the AMPK signaling pathways. Last, we show that DsbA-L plays a
critical role in the promoting effect of RSV on adiponectin multimerization and
cellular levels"
-
Resveratrol
enhances the anti-tumor activity of the mTOR inhibitor rapamycin in multiple
breast cancer cell lines mainly by suppressing rapamycin-induced AKT signaling
- Cancer Lett. 2010 Dec 16 - "The anti-tumor activity of
rapamycin is compromised by the feedback-loop-relevant hyperactive PI3K and
ERK-MAPK pathway signaling. In breast cancer cells treated with rapamycin, we
observed a moderate increase of AKT phosphorylation (P-AKT) in a rapamycin
resistant cell line, MDA-MB-231, as well as a slight increase of P-AKT in a
rapamycin sensitive cell line, MCF-7. We found that resveratrol, a natural
phytoalexin, suppressed the phosphorylation and activation of the PI3K/AKT
pathway in all the three breast cancer cell lines that we tested. It also had a
weak inhibitory effect on the activation of the mTOR/p70S6K pathway in two cell
lines expressing wildtype PTEN, MCF-7 and MDA-MB-231. The combined use of
resveratrol and rapamycin resulted in modest additive inhibitory effects on the
growth of breast cancer cells, mainly through suppressing rapamycin-induced AKT
activation"
-
Resveratrol
potentiates glucose-stimulated insulin secretion in INS-1E beta-cells and human
islets through Sirt1 dependent mechanism - J Biol Chem. 2010 Dec 16 -
"Resveratrol, a polyphenol compound, is known for its
effects on energy homeostasis. With properties of energy sensors mediating
effects of calorie restriction, sirtuins are targets of resveratrol ...
Resveratrol markedly enhanced the glucose response of INS-1E cells and human
islets, even after removal of the compound from the medium. These effects were
mediated by and fully dependent on active Sirt1, defining a new role for Sirt1
in the regulation of insulin secretion"
-
Role of
resveratrol in FOXO1-mediated gluconeogenic gene expression in the liver -
Biochem Biophys Res Commun. 2010 Nov 12 - "Our results
indicate that resveratrol upregulates the expression of gluconeogenic genes by
attenuating insulin signaling and by deacetylating FOXO1, which are
SIRT1-independent in the cytosol and SIRT1-dependent in the nucleus,
respectively"
-
Resveratrol
Protects against Oxidized LDL-Induced Breakage of the Blood-Brain Barrier by
Lessening Disruption of Tight Junctions and Apoptotic Insults to Mouse
Cerebrovascular Endothelial Cells - J Nutr. 2010 Oct 27 -
"Cerebrovascular endothelial cells (CEC) ... Exposure of
mouse CEC to 200 μmol/L oxLDL for 1 h did not cause cell death but significantly
altered the permeability and transendothelial electrical resistance of the cell
monolayer. However, resveratrol completely normalized such injury. As for the
mechanisms, resveratrol completely protected oxLDL-induced disruption of F-actin
and microtubule cytoskeletons as well as occludin and zona occludens-1 (ZO-1)
tight junctions. The oxLDL-induced decreases in the mitochondrial membrane
potential and intracellular ATP levels were normalized by resveratrol. Exposure
of mouse CEC to 200 μmol/L oxLDL for 24 h elevated oxidative stress and
simultaneously induced cell apoptosis. However, resveratrol partially protected
against oxLDL-induced CEC apoptosis. The oxLDL-induced alterations in levels of
Bcl-2, Bax, and cytochrome c were completely normalized by resveratrol.
Consequently, resveratrol partially decreased oxLDL-induced activation of
caspases-9 and -3. Therefore, in this study, we show that resveratrol can
protect against oxLDL-induced damage of the BBB through protecting disruption of
the tight junction structure and apoptotic insults to CEC"
-
Quercetin is
equally or more effective than resveratrol in attenuating tumor necrosis
factor-{alpha}-mediated inflammation and insulin resistance in primary human
adipocytes - Am J Clin Nutr. 2010 Oct 13 - "These
data suggest that quercetin is equally or more effective than trans-RSV in
attenuating TNF-α-mediated inflammation and insulin resistance in primary human
adipocytes" - See
quercetin at Amazon.com.
-
Dietary
polyphenols: Focus on resveratrol, a promising agent in the prevention of
cardiovascular diseases and control of glucose homeostasis - Nutr Metab
Cardiovasc Dis. 2010 Oct;20(8):618-25 - "Plants
continuously produce an extraordinary variety of biologically active
low-molecular-mass compounds. Among them, resveratrol
(3,5,4'-trihydroxystilbene) is endowed with significant positive activities by
protecting against cardiovascular diseases and preventing the development and
progression of atherosclerosis. Furthermore, the molecule significantly
ameliorates glucose homeostasis in obese mice. These beneficial effects have
driven considerable interest towards resveratrol molecular activities, and
intensive efforts for the identification of the stilbene targets have been made.
The molecule shows a pleiotropic mode of action. Particularly, its cellular
targets are crucial for cell proliferation and differentiation, apoptosis,
antioxidant defence and mitochondrial energy production. The complexity of
resveratrol activities might account for its effectiveness in ameliorating
multifactorial processes, including the onset and/or progression of several
degenerative diseases such as myocardial infarction, atherosclerosis and type 2
diabetes"
-
Resveratrol
inhibits mTOR signaling by promoting the interaction between mTOR and DEPTOR
- J Biol Chem. 2010 Sep 17 - "Resveratrol (RSV) is a
naturally occurring polyphenol that has been found to exert anti-oxidant,
anti-inflammatory, and neuroprotective properties. However, how RSV exerts its
beneficial health effects remains largely unknown. Here we show that RSV
inhibits insulin- and leucine-stimulated mTOR signaling in C2C12 fibroblasts via
a Sirt1-independent mechanism ... Taken together, our studies reveal that RSV
inhibits leucine-stimulated mTORC1 activation by promoting mTOR/DEPTOR
interaction and thus uncover a novel mechanism by which RSV negatively regulates
mTOR activity"
-
Resveratrol
improves myocardial perfusion in a swine model of hypercholesterolemia and
chronic myocardial ischemia - Circulation. 2010 Sep 14;122(11 Suppl):S142-9
- "hypercholesterolemic diet with supplemental
resveratrol (100 mg/kg/d orally, HCRV ... Total cholesterol was lowered about
30% in HCRV animals (P<0.001). Regional wall motion analysis demonstrated a
significant decrease in inferolateral function from baseline to 7 weeks in HCC
swine (P=0.04). There was no significant change in regional function in HCRV
swine from baseline to 7 weeks (P=0.32). Tissue blood flow during stress was
2.8-fold greater in HCRV swine when compared with HCC swine (P=0.04).
Endothelium-dependent microvascular relaxation response to Substance P was
diminished in HCC swine, which was rescued by resveratrol treatment (P=0.004).
Capillary density (PECAM-1 staining) demonstrated fewer capillaries in both HCC
and HCRV swine versus control swine (P=0.02). Immunoblot analysis demonstrated
significantly greater expression in HCRV versus HCC swine of the following
markers of angiogenesis: VEGF (P=0.002), peNOS (ser1177) (P=0.04), NFkB
(P=0.004), and pAkt (thr308) (P=0.001) ... Supplemental resveratrol attenuates
regional wall motion abnormalities, improves myocardial perfusion in the
collateral dependent region, preserves endothelium-dependent coronary vessel
function, and upregulates markers of angiogenesis associated with the VEGF
signaling pathway"
-
Resveratrol
prevents RANKL induced osteoclast differentiation of murine osteoclast
progenitor RAW 264.7 cells through inhibition of ROS production - Biochem
Biophys Res Commun. 2010 Sep 16 - "The bone protective
effects of resveratrol have been demonstrated in several osteoporosis models
while the underlying mechanism is largely unclear ... We postulate that the
direct inhibitory effects of resveratrol on osteoclastogenesis are mediated via
inhibition of ROS generation"
-
Clinical
Pharmacology of Resveratrol and Its Metabolites in Colorectal Cancer Patients
- Cancer Res. 2010 Sep 14 - "Consumption of resveratrol
reduced tumor cell proliferation by 5% (P = 0.05). The results suggest that
daily p.o. doses of resveratrol at 0.5 or 1.0 g produce levels in the human
gastrointestinal tract of an order of magnitude sufficient to elicit
anticarcinogenic effects. Resveratrol merits further clinical evaluation as a
potential colorectal cancer chemopreventive agent"
-
Resveratrol:
a relevant pharmacological approach for the treatment of metabolic syndrome?
- Curr Opin Clin Nutr Metab Care. 2010 Sep 4 - "Through
its regulatory action of both AMP kinase and the sirtuin sirtuin-1, resveratrol
is a natural sirtuin activator that certainly will be the head of a new
pharmacological family of drugs targeted on sirtuin-1 activity exacerbation in
order to treat/protect from obesity and diabetes, and thus metabolic syndrome"
-
Resveratrol
differentially modulates inflammatory responses of microglia and astrocytes
- J Neuroinflammation. 2010 Aug 17;7(1):46 - "These
results suggest that murine microglia and astrocytes produce proinflammatory
cytokines and NO in response to LPS in a similar pattern with some differences
in signaling molecules involved, and further suggest that resveratrol exerts
anti-inflammatory effects in microglia and astrocytes by inhibiting different
proinflammatory cytokines and key signaling molecules"
-
An
Antiinflammatory and Reactive Oxygen Species Suppressive Effects of an Extract
of Polygonum Cuspidatum Containing Resveratrol - J Clin Endocrinol Metab.
2010 Jun 9 - "The extract induced a significant
reduction in reactive oxygen species generation, the expression of p47(phox),
intranuclear nuclear factor-kappaB binding, and the expression of jun-N-terminal
kinase-1, inhibitor of kappaB-kinase-beta, phosphotyrosine phosphatase-1B, and
suppressor of cytokine signaling-3 in mononuclear cells when compared with the
baseline and the placebo. PCE intake also suppressed plasma concentrations of
TNF-alpha, IL-6, and C-reactive protein. There was no change in these indices in
the control group given placebo. Conclusions: The PCE-containing resveratrol has
a comprehensive suppressive effect on oxidative and inflammatory stress"
-
Acute
resveratrol supplementation improves flow-mediated dilatation in
overweight/obese individuals with mildly elevated blood pressure - Nutr
Metab Cardiovasc Dis. 2010 Jul 29 - "Flow-mediated
dilatation of the brachial artery (FMD) is a biomarker of endothelial function
and cardiovascular health. Impaired FMD is associated with several
cardiovascular risk factors including hypertension and obesity. Various food
ingredients such as polyphenols have been shown to improve FMD ... One hour
after consumption of the supplement, plasma resveratrol and FMD were measured.
Data were analyzed by linear regression versus log(10) dose of resveratrol. 14
men and 5 women (age 55 +/- 2 years, BMI 28.7 +/- 0.5 kg m(-2), BP 141 +/- 2/89
+/- 1 mmHg) completed this study. There was a significant dose effect of
resveratrol on plasma resveratrol concentration (P < 0.001) and on FMD (P <
0.01), which increased from 4.1 +/- 0.8% (placebo) to 7.7 +/- 1.5% after 270 mg
resveratrol. FMD was also linearly related to log(10) plasma resveratrol
concentration"
-
Resveratrol
and Small Artery Compliance and Remodeling in the Spontaneously Hypertensive Rat
- Am J Hypertens. 2010 Jul 29 - "The ability of
resveratrol to limit the increase in compliance of SHR arteries is likely
related to inhibitory effects on remodeling and pro-growth ERK signaling rather
than blood pressure or arterial wall component stiffness"
-
Anti-atherogenic effects of resveratrol - Eur J Clin Nutr. 2010 May 19 -
"RS exerts several health benefits including
anti-atherogenic, anti-inflammatory and anti-cancer effects. RS may also prevent
lipid oxidation, platelet aggregation, arterial vasodilation and modulates the
levels of lipids and lipoproteins. As a potent, anti-oxidant RS reduces
oxidative stress and regenerates alpha-tocopherol, which further strengthens the
anti-oxidant defense mechanism. RS has been considered safe as no significant
toxic effects have been identified, even when consumed at higher concentrations.
This evidence identified RS as an effective anti-atherogenic agent, which could
be used in the prevention and treatment of CVD"
-
Resveratrol
regulates human adipocyte number and function in a Sirt1-dependent manner -
Am J Clin Nutr. 2010 May 12 - "Taken together, our data
suggest that resveratrol influences adipose tissue mass and function in a way
that may positively interfere with the development of obesity-related
comorbidities. Thus, our findings open up the new perspective that
resveratrol-induced intracellular pathways could be a target for prevention or
treatment of obesity-associated endocrine and metabolic adverse effects"
-
Dietary supplementation of
resveratrol attenuates chronic colonic inflammation in mice - Eur J
Pharmacol. 2010 May 10;633(1-3):78-84 - "Our results
demonstrated that resveratrol group significantly attenuated the clinical signs
such as loss of body weight, diarrhea and rectal bleeding improving results from
disease activity index and inflammatory score. Moreover, the totality of
resveratrol-fed animals survived and finished the treatment while animals fed
with standard diet showed a mortality of 40%. Three weeks after DSS removal, the
polyphenol caused substantial reductions of the rise of pro-inflammatory
cytokines, TNF-alpha and IL-1beta and an increase of the anti-inflammatory
cytokine IL-10. Also resveratrol reduced prostaglandin E synthase-1 (PGES-1),
cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) proteins
expression, via downregulation of p38, a mitogen-activated protein kinases
(MAPK) signal pathway. We conclude that resveratrol diet represents a novel
approach to the treatment of chronic intestinal inflammation"
-
Anti-inflammatory effect of resveratrol on adipokine expression and secretion in
human adipose tissue explants - Int J Obes (Lond). 2010 Jun 8 -
"This study is the first to show anti-inflammatory
effects of RSV on adipokine expression and secretion in human adipose tissue in
vitro through the SIRT1 pathway. Thus, RSV is hypothesized to possess beneficial
effects and might improve the metabolic profile in human obesity"
-
Pro-ulcer
effects of resveratrol in mice with indomethacin-induced gastric ulcers are
reversed by l-arginine - Br J Pharmacol. 2010 Jan 8 -
"Although resveratrol is currently being evaluated in
pre-clinical studies as a potential cancer chemopreventive agent and
cardiovascular stress-releasing compound, treatment with resveratrol severely
delays healing of pre-existing gastric ulcers. Resveratrol treatment can also
induce endothelial NOS (eNOS) expression ... Resveratrol significantly
aggravated damage from indomethacin-induced gastric ulcers, and delayed healing,
as shown by increased DS and MPO activity. The mRNA for cyclooxygenase (COX)-1,
but not that for COX-2, was inhibited by resveratrol treatment, with reduced
synthesis of PGE(2) by gastric tissue. However, resveratrol treatment induced
eNOS gene expression and shifted the eNOS/iNOS balance. l-Arginine given before
resveratrol in mice with indomethacin-induced ulcers significantly increased
tissue NO synthesis and improved ulcer healing" - See
L-arginine products at Amazon.com.
-
Resveratrol
Prevents the Development of Pathological Cardiac Hypertrophy and Contractile
Dysfunction in the SHR Without Lowering Blood Pressure - Am J Hypertens.
2009 Nov 26 - "Resveratrol treatment significantly
prevented the development of concentric hypertrophy, and systolic and diastolic
dysfunction in SHR without lowering blood pressure. Resveratrol also
significantly reduced the oxidative stress levels of cardiac tissue in
SHR.ConclusionsResveratrol treatment was beneficial in preventing the
development of concentric hypertrophy and cardiac dysfunction in SHR. The
cardioprotective effect of resveratrol in SHR may be partially mediated by a
reduction in oxidative stress. Thus, resveratrol may have potential in
preventing cardiac impairment in patients with essential hypertension"
-
Resveratrol
Modulates Tumor Cell Proliferation and Protein Translation via SIRT1-Dependent
AMPK Activation - J Agric Food Chem. 2009 Nov 20 -
"Similar to those effects associated with caloric restriction (CR), resveratrol
has multiple beneficial activities, such as increased life span and delay in the
onset of diseases associated with aging ... Here, we show that resveratrol
activated AMPK in both ER-positive and ER-negative breast cancer cells ... Here,
we show that resveratrol activated AMPK in both ER-positive and ER-negative
breast cancer cells. Once activated, AMPK inhibited 4E-BP1 signaling and mRNA
translation via mammalian target of rapamycin (mTOR). Moreover, we also found
that AMPK activity mediated by resveratrol in cancer cells was due to inducing
the expression of Sirtuin type 1 (SIRT1) via elevation in the cellular
NAD(+)/NADH in ER-positive cells. To our knowledge, we demonstrate here for the
first time that resveratrol induces the expression of SIRT1 protein in human
cancer cells. These observations raise the possibility that SIRT1 functions as a
novel upstream regulator for AMPK signaling and may additionally modulate tumor
cell proliferation. Targeting SIRT1/AMPK signaling by resveratrol may have
potential therapeutic implications for cancer and age-related diseases"
-
Effects of diverse dietary phytoestrogens on cell growth, cell cycle and
apoptosis in estrogen-receptor-positive breast cancer cells - J Nutr
Biochem. 2009 Oct 2 - "While genistein, resveratrol and
glycitein all increased apoptosis and reduced the Bcl-2/Bax ratio, resveratrol
reduced this ratio more than either genistein or glycitein. Moreover,
resveratrol significantly enhanced p53-dependent transcriptional activity, but
slightly reduced NF-kappaB-dependent transcriptional activity. On knockdown
analysis, genistein, resveratrol and glycitein all reduced the Bcl-2/Bax ratio
in the presence of apoptosis-inducing stimuli, and estrogen receptor (ER) alpha
silencing had no effect on these reductions. In contrast, in the absence of
apoptosis-inducing stimuli, only resveratrol reduced the ratio, and ERalpha
silencing abolished this reduction. Thus, resveratrol might be the most
promising candidate for HRT and chemoprevention of breast cancer due to its
estrogenic activity and high antitumor activity" - See
resveratrol products at Amazon.com.
-
Effect of
resveratrol on helicobacter pylori-induced interleukin-8 secretion, reactive
oxygen species generation and morphological changes in human gastric epithelial
cells - Biol Pharm Bull. 2009 Nov;32(11):1931-5 -
"preincubation of the cells with 75 and 100 muM of resveratrol significantly
(p<0.05 and p<0.01 respectively) inhibited the secretion of IL-8 from H.
pylori-infected cells. In addition, resveratrol pretreatment at 1-100 muM
suppressed H. pylori-induced ROS generation in a concentration dependent manner.
Moreover, H. pylori-initiated morphological changes were markedly blocked by
resveratrol. Hence, resveratrol can be considered as a potential candidate
against various H. pylori related gastric pathogenic processes" - See
resveratrol products at Amazon.com.
-
Curcumin
synergizes with resveratrol to inhibit colon cancer - Nutr Cancer.
2009;61(4):544-53 - "the combination of curcumin and
resveratrol was found to be more effective in inhibiting growth of p53-positive
(wt) and p53-negative colon cancer HCT-116 cells in vitro and in vivo in SCID
xenografts of colon cancer HCT-116 (wt) cells than either agent alone. Analysis
by Calcusyn software showed synergism between curcumin and resveratrol. The
inhibition of tumors in response to curcumin and/or resveratrol was associated
with the reduction in proliferation and stimulation of apoptosis accompanied by
attenuation of NF-kappaB activity. In vitro studies have further demonstrated
that the combinatorial treatment caused a greater inhibition of constitutive
activation of EGFR and its family members as well as IGF-1R. Our current data
suggest that the combination of curcumin and resveratrol could be an effective
preventive/therapeutic strategy for colon cancer"
-
The red wine
polyphenol resveratrol reduces polycyclic aromatic hydrocarbon-induced DNA
damage in MCF-10A cells - Br J Nutr. 2009 Oct 8:1-7 -
"In summary, resveratrol might protect breast cells
against PAH-induced DNA damage. The underlying mechanism was mediated by phase I
enzyme suppression rather than phase II enzyme induction or oxidative DNA
repair"
-
Resveratrol
enhances p53 acetylation and apoptosis in prostate cancer by inhibiting
MTA1/NuRD complex - Int J Cancer. 2009 Oct 6 - "Our
study identifies MTA1 as a new molecular target of Res that may have important
clinical applications for PCa chemoprevention and therapy, and points to the
combination of Res with HDAC inhibitors as an innovative therapeutic strategy
for the treatment of PCa"
-
Resveratrol
prevents hyperglycemia-induced endothelial dysfunction via activation of
adenosine monophosphate-activated protein kinase - Biochem Biophys Res
Commun. 2009 Aug 7 - "Endothelial dysfunction secondary
to persistent hyperglycemia plays a key role in the development of type 2
diabetic vascular disease ... These results provide new insight into the
protective properties of resveratrol against endothelial dysfunction caused by
high glucose, which is attributed to the AMPK mediated reduction of superoxide
level" -
Click here for a definition of endothelial dysfunction.
-
Resveratrol
Prevents Monocrotaline-Induced Pulmonary Hypertension in Rats -
Hypertension. 2009 Jul 13 - "Pulmonary hypertension was
associated with an upregulation of NAD(P)H oxidase in small pulmonary arteries,
which was significantly attenuated by resveratrol treatment. Our studies show
that resveratrol exerts anti-inflammatory, antioxidant, and antiproliferative
effects in the pulmonary arteries, which may contribute to the prevention of
pulmonary hypertension"
-
A new
insight into resveratrol as an atheroprotective compound: Inhibition of lipid
peroxidation and enhancement of cholesterol efflux - Atherosclerosis. 2009
May 22 - "Resveratrol thus appears to be a natural
antioxidant that enhances cholesterol efflux. These properties make it a
potential natural antioxidant that could be used to prevent and treat CVD"
-
Resveratrol
Alters Proliferative Responses and Apoptosis in Human Activated B Lymphocytes in
Vitro - J Nutr. 2009 Jun 23 - "These data show that
human B lymphocyte proliferation and apoptosis are modified by physiological
concentrations of resveratrol and suggest that exposure of human B cells to
resveratrol may increase survival by upregulating Bcl-2" - See
resveratrol products at Amazon.com.
-
Resveratrol
Enhances Ultraviolet B-Induced Cell Death through Nuclear Factor-kappa B Pathway
in Human Epidermoid Carcinoma A431 Cells - Biochem Biophys Res Commun. 2009
Apr 24 - "In conclusion, our study demonstrates that the
combination of resveratrol and UVB act synergistically against skin cancer
cells. Thus, resveratrol is a potential chemotherapeutic agent against skin
carcinogenesis"
-
Resveratrol
attenuates angiotensin II-induced interleukin-6 expression and perivascular
fibrosis - Hypertens Res. 2009 Apr 17 - "Resveratrol
significantly attenuated Ang II-induced IL-6 mRNA expression and IL-6 protein in
the supernatant of VSMC in a dose-dependent manner. Resveratrol suppressed the
IL-6 gene promoter activity. Resveratrol inhibited the Ang II-induced
cAMP-response element-binding protein and nuclear factor-kappa B activity, which
are critical for Ang II-induced IL-6 gene activation. An increase in the serum
concentration of IL-6 induced by Ang II infusion was attenuated by an oral
administration of resveratrol. Resveratrol also inhibited Ang II-induced
hypertension and perivascular fibrosis of the heart. Although hydralazine
reduced blood pressure level equal to resveratrol, it did not reduce the Ang
II-induced IL-6 production and perivascular fibrosis. These data suggest that
the inhibition of Ang II-induced vascular inflammation and high blood pressure
by resveratrol may contribute, at least in part, to the anti-atherogenic effects
of resveratrol"
-
Resveratrol
Prevents the Prohypertrophic Effects of Oxidative Stress on LKB1 -
Circulation. 2009 Mar 16 - "Our data identify a
molecular mechanism in the cardiomyocyte involving the oxidative stress-derived
lipid peroxidation byproduct HNE and the LKB1/AMPK signaling pathway that
contributes to the development of left ventricular hypertrophy. We also suggest
that resveratrol may be a potential therapy for patients at risk for developing
pathological cardiac hypertrophy by preventing this prohypertrophic process"
- See
resveratrol products at Amazon.com.
-
Resveratrol
inhibits the expression of SREBP1 in cell model of steatosis via Sirt1-FOXO1
signaling pathway - Biochem Biophys Res Commun. 2009 Mar 13;380(3):644-9 -
"Our results suggest that resveratrol may attenuate fat
deposition by inhibiting SREBP1 expression via Sirt1-FOXO1 pathway and thus may
have application for the treatment of NAFLD"
-
Resveratrol
inhibits fatty acid and triacylglycerol synthesis in rat hepatocytes - Eur J
Clin Invest. 2009 Mar;39(3):211-8 - "Results here
reported show that in isolated hepatocytes from normal rats a
resveratrol-induced short-term inhibition of fatty acid and triacylglycerol
synthesis occurs. This finding may represent a potential mechanism contributing
to the reported hypolipidemic effect of resveratrol"
-
Effect of a
Low Dose of Dietary Resveratrol on Colon Microbiota, Inflammation and Tissue
Damage in a DSS-Induced Colitis Rat Model - J Agric Food Chem. 2009 Feb 19 -
"Resveratrol increased lactobacilli and bifidobacteria
as well as diminished the increase of enterobacteria upon DSS treatment.
Resveratrol significantly protected the colonic mucosa architecture, reduced
body weight loss, diminished the induced anemia and reduced systemic
inflammation markers, colonic mucosa prostaglandin E(2), cycloxygenase-2,
prostaglandin E synthase and nitric oxide levels. In addition, the expression of
2,655 genes in distal colon mucosa related to important pathways was varied.
These results reinforce the concept of resveratrol as a dietary beneficial
compound in intestinal inflammation at doses possibly attainable with
resveratrol-enriched nutraceuticals"
-
Resveratrol
inhibits the mTOR mitogenic signaling evoked by oxidized LDL in smooth muscle
cells - Atherosclerosis. 2008 Nov 24 - "Smooth
muscle cell (SMC) proliferation is a major feature in atherosclerosis, since it
contributes to the formation of the fibrous cap, thus to plaque stability, but
also to arterial stenosis and post-angioplasty restenosis ... These data
indicate that the mTOR pathway is activated by oxLDL via PI3K/PDK1/Akt, and is
required for SMC proliferation. Resveratrol blocks specifically this pathway,
thereby inhibiting oxLDL-induced SMC proliferation. These data highlight a new
property for resveratrol that could contribute to the general anti-atherogenic
properties of this polyphenol"
-
Resveratrol
protects cardiomyocytes from hypoxia-induced apoptosis through the SIRT1-FoxO1
pathway - Biochem Biophys Res Commun. 2008 Dec 3 -
"Loss of cardiomyocytes through apoptosis has been proposed as a cause of
ventricular remodeling and heart failure. Ischemia- and hypoxia-induced
apoptosis of cardiomyocytes reportedly plays an important role in many cardiac
pathologies. We investigated whether resveratrol (Res) has direct cytoprotective
effects against ischemia/hypoxia for cardiomyocytes. Exposure of H9c2 embryonic
rat heart-derived cells to hypoxia for 24h caused a significant increase in
apoptosis, as evaluated by TUNEL and flow cytometry, while treatment with 20muM
Res greatly decreased hypoxia-induced apoptosis in these cells. Exposure of the
cells to Res (20muM) caused rapid activation of SIRT1, which had a dual effect
on FoxO1 function: SIRT1 increased FoxO1's ability to induce cell cycle arrest,
but inhibited FoxO1's ability to induce cell death. This effect could be
reversed by SIRT1 inhibition. Results of our study indicate that Res inhibits
hypoxia-induced apoptosis via the SIRT1-FoxO1 pathway in H9c2 cells. This
polyphenol may have potential in preventing cardiovascular disease, especially
in coronary artery disease (CAD) patients"
-
Resveratrol, at
concentrations attainable with moderate wine consumption, stimulates human
platelet nitric oxide production - J Nutr. 2008 Sep;138(9):1602-8 -
"resveratrol, at concentrations attainable after
moderate wine intake, activates platelet eNOS and in this way blunts the
proinflammatory pathway linked to p38MAPK, thus inhibiting ROS production and
ultimately platelet function. This activity may contribute to the beneficial
effects of moderate wine intake on ischemic cardiovascular disease"
-
Long-term effects of resveratrol supplementation on suppression of atherogenic
lesion formation and cholesterol synthesis in apo E-deficient mice - Biochem
Biophys Res Commun. 2008 Jul 5 - "The concentration of
total-cholesterol (total-C) and LDL-cholesterol (LDL-C) in plasma was
significantly lower in the resveratrol-supplemented groups compare to the
control group over the entire experimental period. The plasma HDL-C
concentration was significantly elevated, and the ratio of HDL-C/total-C was
significantly higher in the CF and RV groups than in the control group. Plasma
paraoxonase (PON) activity was significantly higher in the 0.06% resveratrol
group. The hepatic HMG-CoA reductase (HMGR) activity was significantly lower in
the clofibrate and resveratrol groups than in the control group. Resveratrol
supplements attenuated the presence of atherosclerotic lesions and periarterial
fat deposition in the apo E(-/-) mice. The presence of intracellular adhesion
molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) in
atherosclerotic vessels was diminished in the resveratrol-supplemented apo
E(-/-) mice. These results provide new insight into the anti-atherogenic and
hypocholesterolemic properties of resveratrol in apo E(-/-) mice that were fed a
normal diet"
-
Resveratrol reduces endothelial progenitor cells senescence through augmentation
of telomerase activity by Akt-dependent mechanisms - Br J Pharmacol. 2008
Jun 30 - "Resveratrol significantly increased telomerase
activity and Akt phosphorylation ... Resveratrol delayed the onset of EPC
senescence and this effect was accompanied by activation of telomerase through
the PI3K-Akt signalling pathway. The inhibition of EPCs senescence by
resveratrol might protect EPCs against dysfunction induced by pathological
factors in vivo and improve EPC functional activities in a way that may be
important for cell therapy"
-
Resveratrol Induces Apoptosis through ROS-Dependent Mitochondria Pathway in
HT-29 Human Colorectal Carcinoma Cells - J Agric Food Chem. 2008 Jun 4 -
"Results of the present study provide evidence
demonstrating the antitumor effect of trans-resveratrol via a ROS-dependent
apoptosis pathway in colorectal carcinoma"
-
Antioxidant Protection of Resveratrol and Catechin in Saccharomyces cerevisiae
- J Agric Food Chem. 2008 May 20 - "In this work, the
capacity of resveratrol and catechin to protect the eukaryotic microorganism
Saccharomyces cerevisiae against oxidative stress caused by different agents,
hydrogen peroxide, carbon tetrachloride, and cadmium, was evaluated. Under all
stress conditions, both polyphenols increased tolerance, although their
protection was more evident under peroxide exposure. By using mutant strains
deficient in specific antioxidant defense systems (superoxide dismutases,
catalase, or glutathione), it was observed that increased H 2O 2 tolerance
produced by both polyphenols was associated with catalase, as well as the rise
in survival rates caused by resveratrol under CCl 4. The acquisition of
tolerance was correlated with a reduction in lipid peroxidation, indicating that
the antioxidant property of resveratrol and catechin involves protection against
membrane oxidation"
-
Dietary
resveratrol administration increases MnSOD expression and activity in mouse
brain - Biochem Biophys Res Commun. 2008 May 15 -
"trans-Resveratrol
(3,4',5-trihydroxystilbene; RES) ... The increase in MnSOD was not due to a
substantial proliferation of mitochondria, as RES treatment induced a 10%
increase in mitochondrial abundance (Citrate Synthase activity). The potential
neuroprotective properties of MnSOD have been well established, and we
demonstrate that a dietary delivery of RES is able to increase the expression
and activity of this enzyme in vivo"
-
Resveratrol protects against arsenic trioxide-induced cardiotoxicity in vitro
and in vivo - Br J Pharmacol. 2008 Mar 10 - "The
clinical use of arsenic trioxide (As(2)O(3)), a potent antineoplastic agent, is
limited by its severe cardiotoxic effects ... resveratrol significantly
attenuated As(2)O(3)-induced QT prolongation, structural abnormalities and
oxidative damage in the heart. In H9c2 cardiomyocytes, resveratrol also
decreased apoptosis, production of ROS and intracellular calcium mobilization
induced by treatment with As(2)O(3). These observations suggested that
resveratrol has the potential to protect against cardiotoxicity in
As(2)O(3)-exposed patients"
-
Resveratrol attenuates the expression of HMG-CoA reductase mRNA in hamsters
- Biochem Biophys Res Commun. 2007 Dec 28 - "The
concentrations of serum total cholesterol and triglyceride were significantly
lower in the resveratrol-fed group than in the control group. The resveratrol
contained diet significantly decreased Apo B, Lp(a), and
cholesterol-ester-transport protein (CETP) concentrations, but increased Apo A-I
levels and the Apo A-I/Apo B ratio. The contents of cholesterol and triglyceride
in hepatic tissue were significantly lower in the resveratrol group than in the
control group. Real-time PCR analysis revealed that HMGR mRNA expression was
significantly lower in the resveratrol group than in the control group"
-
Differential expression of genes induced by resveratrol in human
breast cancer cell lines - Nutr Cancer. 2006;56(2):193-203 -
"The phytoalexin, trans-resveratrol (RES),
is a polyphenolic compound found in plants and fruits that seems to
have a wide spectrum of biological activities. It has been found to
possess cancer chemopreventive effects by inhibiting diverse
cellular events associated with tumor initiation, promotion, and
progression. RES is also a phytoestrogen, which binds to and
activates estrogen receptors (ERs) that regulate the transcription
of estrogen-responsive target genes"
-
Resveratrol inhibits TNF-alpha-induced changes of adipokines in
3T3-L1 adipocytes - Biochem Biophys Res Commun. 2007 Oct 26 -
"resveratrol may improve obesity-induced cardiovascular disease,
particularly atherosclerosis, by attenuating the TNF-alpha-induced
changes of adipokines"
-
Hypoxia enhances LPA-induced HIF-1alpha and VEGF expression: Their
inhibition by resveratrol - Cancer Lett. 2007 Oct 3 -
"Lysophosphatidic acid (LPA) is a bioactive
phospholipid that is involved in various cellular events, including
tumor invasion and metastasis ... Collectively, these results show
that LPA under hypoxic condition enhances cell migration through the
sequential induction of HIF-1alpha and VEGF, and that this
enhancement is efficiently blocked by resveratrol"
-
Resveratrol Inhibits the Activity of Equine Neutrophil
Myeloperoxidase by a Direct Interaction with the Enzyme - J
Agric Food Chem. 2007 Sep 11 - "Resveratrol
is a polyphenolic antioxidant present in beverage and food known for
its multiple protective effects. We report the inhibitory effects of
resveratrol on equine myeloperoxidase (MPO), a hemic peroxidase
present in the granules of the neutrophils involved in the
inflammatory response. Resveratrol inhibited the production of
reactive oxygen species (ROS) by stimulated equine neutrophils by
acting as a direct scavenger of the ROS released by the cells but
did not modify the degranulation of the stimulated neutrophils as
the amounts of released MPO were unchanged. Resveratrol strongly
inhibited the chlorination, oxidation, and nitration activities of
MPO in a dose-dependent manner"
-
Resveratrol inhibits expression and binding activity of the monocyte
chemotactic protein-1 receptor, CCR2, on THP-1 monocytes -
Atherosclerosis. 2007 May 11 - "Monocyte
chemotactic protein-1 and its receptor, CCR2, play a key role in
atherosclerosis ... These inhibitory effects of resveratrol on
chemokine receptor binding and expression may contribute, in part,
to its cardiovascular protective activity in vivo"
-
The cancer preventative agent resveratrol is converted to the
anticancer agent piceatannol by the cytochrome P450 enzyme CYP1B1
- Br J Cancer 2002 Mar 4;86(5):774-8 - "This
observation provides a novel explanation for the cancer preventative
properties of resveratrol. It demonstrates that a natural dietary
cancer preventative agent can be converted to a compound with known
anticancer activity by an enzyme that is found in human tumours"
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