Featured Research

from universities, journals, and other organizations

Resveratrol: Study resolves controversy on life-extending red wine ingredient, restores hope for anti-aging pill

Date:
May 1, 2012
Source:
Cell Press
Summary:
A new study appears to offer vindication for an approach to anti-aging drugs that has been at the center of heated scientific debate in recent years. The new findings show for the first time that the metabolic benefits of the red wine ingredient known as resveratrol evaporate in mice that lack the famed longevity gene SIRT1.

A study in the May issue of the Cell Press journal Cell Metabolism appears to offer vindication for an approach to anti-aging drugs that has been at the center of heated scientific debate in recent years. The new findings show for the first time that the metabolic benefits of the red wine ingredient known as resveratrol evaporate in mice that lack the famed longevity gene SIRT1.
Credit: © Mist / Fotolia

A study in the May issue of the Cell Press journal Cell Metabolism appears to offer vindication for an approach to anti-aging drugs that has been at the center of heated scientific debate in recent years. The new findings show for the first time that the metabolic benefits of the red wine ingredient known as resveratrol evaporate in mice that lack the famed longevity gene SIRT1.

"Resveratrol improves the health of mice on a high-fat diet and increases life span," said David Sinclair of Harvard Medical School. The question was how.

Resveratrol is a dirty molecule, he explained. Its benefits had been attributed largely to its actions on SIRT1, based on studies in yeast, worms, and flies, but the naturally occurring ingredient has other effects; it influences dozens of proteins, and some evidence had pointed to the importance of another well-known gene (called AMPK) for resveratrol's metabolic benefits. That called into question not only the biology, but also whether SIRT1-targeted drugs in development were aimed in the wrong direction. (Those doubts and other factors led the pharmaceutical company Sirtris to halt its last clinical trial of resveratrol last year.)

Answers were hard to come by in mice, because animals lacking SIRT1 altogether don't survive. Sinclair and his colleagues have now overcome that obstacle by producing mice in which the SIRT1 gene can be completely turned off in adults. They've discovered that those SIRT1-deficient adult mice don't enjoy the benefits of resveratrol.

The study also provides insight into another important aspect of the resveratrol controversy. Doubts had arisen in part because the red wine ingredient seems to act in different ways at different doses. The study by Sinclair and colleagues clears those details up, too.

They show that resveratrol targets SIRT1 directly at moderate doses and hits other targets at higher ones. Importantly, SIRT1 is required for resveratrol's benefits irrespective of dose. Based on the findings, Sinclair emphasizes the value of finding the lowest effective dose of resveratrol, and perhaps any drug, to avoid off-target effects.

George Vlasuk, CEO of Sirtris, who was not involved in the new study, says the findings in Cell Metabolism offer the "first definitive evidence" for a direct link between SIRT1 and the metabolic benefits of resveratrol.

"The work by Price et al. strongly supports the basic rationale being pursued at Sirtris, which focuses on the development of small-molecule compounds that directly activate the enzymatic activity of SIRT1 as a new therapeutic approach to many diseases of aging," Vlasuk wrote in an email.


Story Source:

The above story is based on materials provided by Cell Press. Note: Materials may be edited for content and length.


Journal Reference:

  1. Nathan L. Price, Ana P. Gomes, Alvin J.Y. Ling, Filipe V. Duarte, Alejandro Martin-Montalvo, Brian J. North, Beamon Agarwal, Lan Ye, Giorgio Ramadori, Joao S. Teodoro, Basil P. Hubbard, Ana T. Varela, James G. Davis, Behzad Varamini, Angela Hafner, Ruin Moaddel, Anabela P. Rolo, Roberto Coppari, Carlos M. Palmeira, Rafael de Cabo, Joseph A. Baur, David A. Sinclair. SIRT1 Is Required for AMPK Activation and the Beneficial Effects of Resveratrol on Mitochondrial Function. Cell Metabolism, 2012; 15 (5): 675 DOI: 10.1016/j.cmet.2012.04.003

Cite This Page:

Cell Press. "Resveratrol: Study resolves controversy on life-extending red wine ingredient, restores hope for anti-aging pill." ScienceDaily. ScienceDaily, 1 May 2012. <www.sciencedaily.com/releases/2012/05/120501134209.htm>.
Cell Press. (2012, May 1). Resveratrol: Study resolves controversy on life-extending red wine ingredient, restores hope for anti-aging pill. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2012/05/120501134209.htm
Cell Press. "Resveratrol: Study resolves controversy on life-extending red wine ingredient, restores hope for anti-aging pill." ScienceDaily. www.sciencedaily.com/releases/2012/05/120501134209.htm (accessed July 31, 2014).

Share This




More Plants & Animals News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Visitors Feel Part of the Pack at Wolf Preserve

Visitors Feel Part of the Pack at Wolf Preserve

AP (July 31, 2014) — Seacrest Wolf Preserve on the northern Florida panhandle allows more than 10,000 visitors each year to get up close and personal with Arctic and British Columbian Wolves. (July 31) Video provided by AP
Powered by NewsLook.com
Florida Panther Rebound Upsets Ranchers

Florida Panther Rebound Upsets Ranchers

AP (July 31, 2014) — With Florida's panther population rebounding, some ranchers complain the protected predators are once again killing their calves. (July 31) Video provided by AP
Powered by NewsLook.com
Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) — Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Raw: Thousands Flocking to German Crop Circle

Raw: Thousands Flocking to German Crop Circle

AP (July 30, 2014) — Thousands of people are trekking to a Bavarian farmer's field to check out a mysterious set of crop circles. (July 30) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

More Coverage


More Evidence for Longevity Pathway

May 1, 2012 — New research reinforces the claim that resveratrol -- a compound found in plants and food groups, notably red wine -- prolongs lifespan and health-span by interacting with key genes in mitochondria, ... read more
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins