Cathepsin B increases apoptosis in fulminant hepatic failure

March 20, 2009

The traditional view is that hepatocyte necrosis is the main feature of fulminant hepatic failure, but increasing evidence implicates a dominant role for hepatocyte apoptosis in this pathogenesis. It is not known if cathepsin B-mediated hepatocyte apoptosis is involved in the pathogenesis of fulminant hepatic failure. To ascertain its pathogenic role in hepatic failure, the research examined the protective effect of a cathepsin B inhibitor (CA-074Me) on fulminant hepatic failure in mice.

A research article to be published on March 14, 2009 in the World Journal of Gastroenterology addresses this question. The research team led by Prof. Yang in the Department of of the Second Clinical Hospital of Harbin Medical University investigated cathepsin B expression changes in the liver of fulminant . The article further indicated that LPS/D-Gal N-mediated cathepsin B expression initiates hepatocyte apoptosis in fulminant hepatic failure.

Cathepsin B, a lysosomal cysteine protease, is a candidate for an apoptotic mediator originating from acidic vesicles. CA-074me is a selective inhibitor of cathepsin B , and it is highly cell-permeant and can decrease the expression or activity of cathepsin B. The traditional view is that hepatocyte necrosis is the main feature of fulminant hepatic failure, but increasing evidence implicates a dominant role for hepatocyte apoptosis in this . Inhibition of cathepsin B attenuates apoptosis and liver injury, supporting a link between cathepsin B and fulminant hepatic failure, and thus may provide new targets for further understanding of the pathogenesis of fulminant hepatic failure and new therapeutic targets.

More information: Yan BZ, Wang W, Chen LY, Bi MR, Lu YJ, Li BX, Yang BS. Role of cathepsin B-mediated apoptosis in fulminant hepatic failure in mice. World J Gastroenterol 2009; 15(10): 1231-1236 www.wjgnet.com/1007-9327/15/1231.asp

Source: World Journal of Gastroenterology

Explore further: Ibuprofen restores learning ability in rats with liver failure

Related Stories

Ibuprofen restores learning ability in rats with liver failure

August 1, 2007

Cognitive impairment is one of the neurological effects in patients with hepatic encephalopathy (abnormal brain function due to severe liver disease). For the first time, a new study showed that treatment with an anti-inflammatory ...

Recommended for you

Machine Translates Thoughts into Speech in Real Time

December 21, 2009

(PhysOrg.com) -- By implanting an electrode into the brain of a person with locked-in syndrome, scientists have demonstrated how to wirelessly transmit neural signals to a speech synthesizer. The "thought-to-speech" process ...

Quantum Theory May Explain Wishful Thinking

April 14, 2009

(PhysOrg.com) -- Humans don’t always make the most rational decisions. As studies have shown, even when logic and reasoning point in one direction, sometimes we chose the opposite route, motivated by personal bias or simply ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.