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Toward explaining why hepatitis B hits men harder than women

18-Nov-2009 - Scientists in China are reporting discovery of unusual liver proteins, found only in males, that may help explain the long-standing mystery of why the hepatitis B virus (HBV) sexually discriminates -- hitting men harder than women. Their study has been published online in ACS' Journal of Proteome Research, a monthly publication.

IMAGE: These are hepatitis B particles as viewed under an electron microscope.Shuhan Sun, Fang Wang and colleagues note that chronic hepatitis B seems to progress and cause liver damage faster in men, with men the main victims of the virus's most serious complications -- cirrhosis and liver cancer. Men infected with HBV also are 6 times more likely than women to develop a chronic form of the disease. About 400 million people worldwide have chronic hepatitis B, including a form that is highly infectious and can be transmitted through blood, saliva, and sexual contact.

In experiments with laboratory mice, the scientists found abnormal forms of apolipoprotein A-I (Apo A-I), a protein involved in fighting inflammation, in the livers of infected male mice but not infected females. They then identified abnormal forms of these Apo A-I proteins in blood of men infected with HBV, but not in women. In addition to explaining the gender differences, the proteins may provide important markers for tracking the progression of hepatitis B, the scientists suggest.

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"An altered pattern of liver apolipoprotein A-I is implicated in male chronic hepatitis B progression"

DOWNLOAD FULL TEXT ARTICLE http://pubs.acs.org/stoken/presspac/presspac/full/10.1021/pr900593r

CONTACT:

Shuhan Sun, Ph.D.
Email: shsun@vip.sina.com
Fang Wang, Ph.D.
Email: wfsjz70@gmail.com
Department of Medical Genetics
Second Military Medical University
Shanghai, People's Republic of China
Phone: +86-021-81871053
Fax: +86-021-81871053

Source: EurekAlert
http://www.eurekalert.org/pub_releases/2009-11/acs-tew111809.php


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