Navigation Links
Resveratrol prevents fat accumulation in livers of 'alcoholic' mice

BETHESDA, Md. (Oct. 14, 2008) − 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.

Chronic alcohol consumption causes fat to accumulate and can lead to liver diseases, including cirrhosis and fibrosis of the liver. It can also result in liver failure. The study points to resveratrol as a possible treatment for alcoholic fatty liver disease, and as a way to prevent the disease in those who are at risk, but have not developed it.

Resveratrol is present in grapes, peanuts, berries and in red wine. Other research with mice has suggested resveratrol may have anti-cancer and anti-inflammatory properties. There is also evidence that it has cardiovascular benefits. However, these findings have not been extended to humans.

The study, "Resveratrol alleviates alcoholic fatty liver in mice," was carried out by Joanne M. Ajmo, Xiaomei Liang, Christopher Q. Rogers, Brandi Pennock and Min You, all of the University of South Florida Health Sciences Center, Tampa. The study appears in the American Journal of Physiology-Gastrointestinal and Liver Physiology, published by The American Physiological Society.

Activates cell signalers

The study builds on previous research, which suggests that alcohol inhibits two molecules that play a role in cell signaling and the breakdown of fats in the liver: AMP-activated protein kinase (AMPK) and sirtuin 1 (SIRT1). When alcohol inactivates AMPK and SIRT1, it allows fat to accumulate. Resveratrol does the opposite -- activating AMPK and SIRT1, and helping to clear out fat.

In this study, the authors wanted to find out more about how this happens, at the molecular level. They divided mice into groups and fed all of them a low-fat diet. Some mice had resveratrol in their diet, some had resveratrol plus ethanol (alcohol), some had ethanol alone and some had neither ethanol nor resveratrol. The researchers used two different dose levels of resveratrol. At the end of the experiment, they examined the livers of the mice.

The researchers found, as they had expected, that resveratrol treatment increased the expression of SIRT1 and stimulated the activity of AMPK in the livers of mice fed alcohol. They further found that the increased expression of SIRT1 and AMPK led to:

  • Reduction of sterol regulatory element binding protein (SREBP-1)
  • Activation of peroxisome proliferator-activated receptor gamma co-activator alpha (PGC-1α)
  • Elevation of circulating adiponectin, a hormone produced by fat cells, which helps control obesity
  • Enhanced expression of adiponectin receptors in the liver, which increases the effectiveness of the circulating adiponectin.

The findings suggest that resveratrol prevents alcoholic fatty liver by coordinating molecules that control fat metabolism. This prevents accumulation of fat in the mouse liver by both reducing the production of fat and burning off the fat that is there. Interestingly, the combination of alcohol with resveratrol appears to enhance the positive effects of resveratrol, said Dr. You, the study's senior author.

"Our study suggests that resveratrol may serve as a promising agent for preventing or treating human alcoholic fatty liver disease," the authors concluded.

Contact: Christine Guilfoy
American Physiological Society

Related biology news :

1. Anti-cancer drug prevents, reverses cardiovascular damage in mouse model of premature aging disorder
2. Chemical compound prevents cancer in lab
3. A compound extracted from olives inhibits cancer cells growth and prevents their appearance
4. Device prevents potential errors in childrens medications
5. Implanting embryonic cardiac cells prevents arrhythmias
6. The accumulation of sugar in neurons may explain the origin of several neurodegenerative diseases
7. New Sony PC Delivers High Performance in Ultra-Portable Package
8. Software developed by Boston College lab delivers speed and accuracy to genome research
9. Insecticide combo delivers knockout punch
10. e-Smart(R) Technologies Delivers Its New Super Smart Card(TM) in South Korea.
11. DOE JGI Community Sequencing Program delivers first moss genome
Post Your Comments:
(Date:9/29/2015)... -- iDAvatars is excited to be named one of the first ... official announcement was recently made at an invite-only IBM ... San Francisco , where iDAvatars presented a demo of ... "It is both an honor and a privilege to ... market the cognitive power of IBM Watson in our product, ...
(Date:9/28/2015)... , Sept. 28, 2015 Synaptics Inc. ... interface solutions, today announced that Lenovo has selected Synaptics ... sensor, FS4202, for its latest smartphone, the Vibe P1. ... access to unlock the device and provide swift access ... The feature-rich Natural ID FS4202 sensor solution utilizes ...
(Date:9/10/2015)... Report Details Emerging Biological ... and Revenue Prospects to Help You Stay Ahead ... new drug classes? Get the latest technological and ... market data and industry knowledge, benefitting your influence. ... and sales predictions. Visiongain,s new study reveals ...
Breaking Biology News(10 mins):
(Date:10/12/2015)... Carolina (PRWEB) , ... October 12, 2015 , ... Spirax ... announce the release of the CSM-C 600 compact clean steam generator . ... steam that meets the requirements of HTM2031, HTM2010, and EN285 standards. The CMS-C ...
(Date:10/12/2015)... , 12 de octubre de 2015 ... (D-CA) llegó a un récord en el congreso con ... anual de la International Plasma Awareness Week (IPAW), que ... IPAW está patrocinada por la Plasma Protein Therapeutics ... para: , Aumentar la concienciación mundial ...
(Date:10/12/2015)... , Oct. 12, 2015 VolitionRx Limited ... completed clinical study of its NuQ ® blood-based test ... online issue of Clinical Epigenetics , the official journal ... in collaboration with Lund University, ... , MD, PhD, Professor of Surgery and Vice-Dean, Faculty of ...
(Date:10/10/2015)... -- Le 8 octobre, l,honorable Doris O. Matsui ... Congrès sa déclaration de soutien à la troisième ... plasma (IPAW), qui se tiendra du 11 au ... Protein Therapeutics Association (PPTA) et ses sociétés ... Sensibiliser l,opinion publique mondiale autour du don de ...
Breaking Biology Technology: