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Enzyme Important In Aging Identified By Scientists At Children's Hospital Of Pittsburgh Of UPMC
The secret to longevity may lie in an enzyme with the ability to promote a robust immune system into old age by maintaining the function of the thymus throughout life, according to researchers studying an "anti-aging" mouse model that lives longer than a typical mouse. Don't forget to buy zoloft online no prescription.

Children Of Undocumented Parents May Be At Higher Developmental Risk
Undocumented people live in a shadowy world of high fear and stress -- fear of deportation and stress brought on lack of economic, linguistic and educational res.

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Health Benefits Tax Gains Support In Congress, Opponents In Business
"You can think of Congress"s efforts to pay for health reform as being a little bit like a battle to slay a many-headed Hydra," writes the New York Times" economic columnist, David Leonhardt. Congress has floated idea after idea for paying for comprehensive health reform, but their proposals have failed to make ends meet because they "do not raise revenue as quickly as health costs rise." Most new taxes - such as a surtax on the rich proposed in the House - increase only as quickly as the economy, while health costs have inflated much more quickly over the last decade.
Cardiovascular

SAMe Is Effective In Preventing Formation Of Primary Liver Cancer In Rats

A new study investigated the effectiveness of S-adenosylmethionine (SAMe) in the prevention and treatment of hepatocellular carcinoma (HCC) or primary liver cancer. SAMe, a widely available nutritional supplement, with little known side effects, was found to be effective in preventing the formation of HCC in rats. However, high enough levels of SAMe were not attainable to successfully treat established HCC. The findings are available in the August issue of Hepatology, a journal published by John Wiley & Sons on behalf of the American Association for the Study of Liver Diseases. HCC is the fifth most common cancer and the third most frequent cause of cancer death worldwide. Risk factors for HCC include chronic infection with hepatitis B virus, hepatitis C virus (HCV), dietary aflatoxin, excessive alcohol use, cigarette smoking, diabetes and obesity. The overall 5-year survival for HCC patients is less than 10% and the disease rate is expected to rise due to the high prevalence of HCV in many areas of the world. Shelly Lu, M.D., of the Keck School of Medicine at the University of Southern California, and colleagues studied the effects of SAMe on chemoprevention and treatment of HCC. In the U.S. the incidence of HCC doubled from 1979 to 1995 and the number of HCC cases for the following 20 to 30 years is projected to increase. "Given these projections, there is a tremendous interest in developing effective chemoprevention strategies," said Dr. Lu. "And an important property of SAMe that makes it an attractive agent for chemoprevention and treatment of HCC is its ability to selectively kill liver cancer cells," she added. During the study researchers injected H4IIE cells into rats and found a 1cm tumor developed in the liver two weeks after injection. A regimen of IV SAMe was started one day after injecting the cells and continued for ten days. The researchers monitored the animals using MRI, ultrasound, and visual inspection to assess the liver tumors. "Treatment with IV SAMe by continuous infusion significantly reduced the tumor size and significantly prevented tumor development after 11 days," researchers discovered. Researchers found that if SAMe infusion was started after sizable tumors had already formed it failed to reduce the rate of tumor growth after 24 days of treatment. This is because of a compensatory response of the liver to metabolize SAMe and prevent its accumulation. "The observation that SAMe failed to exert any therapeutic effect in already established HCC is disappointing," said Dr. Lu. "But whether SAMe can be effective in treating HCC in man remains unclear because this compensatory mechanism may not work properly in human HCC. Nevertheless, effectiveness of SAMe in chemoprevention of human HCC deserves study now." Citation: "S-Adenosylmethionine in the Chemoprevention and Treatment of Hepatocellular Carcinoma in a Rat Model," Shelly Lu, Komal Ramani, Xiaopeng Ou, Mark Lin, Victor Yu, Kwangsuk Ko, Ryan Park, Teodoro Bottiglieri, Hidekazu Tsukamoto, Gary Kanel, Samuel French, Josç© Mato, Rex Moats, Edward Grant Hepatology August 2009 Hepatology


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