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Medication may improve portal hypertension
Date:4/1/2009

In a new study, a therapeutic agent called sorafenib dramatically improved the condition of rats with portal hypertension. The drug is already approved in several countries for treatment of kidney and liver cancer, and it may be time to consider it for patients suffering from advanced portal hypertension, the authors suggest. Their findings are in the April issue of Hepatology, a journal published by John Wiley & Sons on behalf of the American Association for the Study of Liver Diseases (AASLD). The article is also available online at Wiley Interscience (www.interscience.wiley.com).

Portal hypertension is the most significant complication for patients with liver cirrhosis. It can become serious and life-threatening, and we do not have many effective ways to treat it. Researchers have considered antiangiogenic drugs, which inhibit the growth of new blood vessels, since such vascular formation is a hallmark of portal hypertension, as they have previously demonstrated. One such drug is sorafenib, a powerful multikinase inhibitor that can be taken orally.

Researchers, led by Mercedes Fernandez from the Institute of Biomedical Research IDIBAPS of Barcelona, examined the effects of sorafenib on rats with portal hypertension induced by partial portal vein ligation or bile duct ligation.

"Our present study is the first to determine if the multiple kinase inhibitor sorafenib causes beneficial effects on the splanchnic, intrahepatic and systemic circulations, and on portosystemic collateral vessels in two different experimental models of portal hypertension," they report.

The rats in the study took sorafenib orally every day for two weeks. They showed no signs of toxicity or adverse effects and the researchers noted numerous improvements in their condition. They had an 80 percent decrease in the growth of new blood vessels and marked lessening of circulation in the areas around th
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Contact: Sean Wagner
medicalnews@bos.blackwellpublishing.com
781-388-8550
Wiley-Blackwell
Source:Eurekalert

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