Abstract:
BACKGROUND AND AIMS:Advanced glycation end products (AGEs) are nonenzymatic modifications of proteins by reducing sugars. These compounds accumulate in a number of chronic disease states, contributing to tissue injury via several mechanisms, including activation of the receptor for advanced glycation end products (RAGE). We aimed to investigate whether AGEs can exacerbate chronic liver injury and contribute to hepatic fibrosis. METHODS:We initially studied the effects of chronic hepatic exposure to high levels of AGEs given intraperitoneally as AGE-rat serum albumin. In a separate experiment, we examined the impact of high AGE exposure in rats following bile duct ligation (BDL). RESULTS:In normal rats, chronic AGE-rat serum albumin administration induced significant increases in α-smooth muscle actin gene and protein expression but did not induce fibrosis or biochemical evidence of liver injury. However, in BDL animals, AGE-bovine serum albumin administration significantly increased hepatic fibrosis as evidenced by increased collagen content and α-smooth muscle actin expression, compared with BDL alone. Furthermore, AGEs increased hepatic oxidative stress and receptor for advanced glycation end products gene expression. CONCLUSIONS:These findings suggest that AGEs may contribute to the pathogenesis of chronic liver injury and fibrosis.
journal_name
J Gastroenterol Hepatoljournal_title
Journal of gastroenterology and hepatologyauthors
Goodwin M,Herath C,Jia Z,Leung C,Coughlan MT,Forbes J,Angus Pdoi
10.1111/jgh.12042subject
Has Abstractpub_date
2013-02-01 00:00:00pages
369-76issue
2eissn
0815-9319issn
1440-1746journal_volume
28pub_type
杂志文章abstract::Ulcerative colitis (UC) and Crohn's disease (CD) comprise the idiopathic inflammatory bowel diseases (IBD) of the gut. The etiology of IBD is poorly understood, but an autoimmune disturbance has been suggested to play an important role in this incurable disease. Extracorporeal leukocytapheresis (CAP) is an additional ...
journal_title:Journal of gastroenterology and hepatology
pub_type: 杂志文章,评审
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abstract:BACKGROUND AND AIM:It has been reported that immunological factors, such as the T-helper cell (Th)1/Th2 ratio, play a part in the mechanisms for the antihepatitis C virus (HCV) effect of the interferon (IFN) alpha-2b plus ribavirin combination therapy. By using flow cytometry, we examined this ratio during a 24-week co...
journal_title:Journal of gastroenterology and hepatology
pub_type: 杂志文章
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journal_title:Journal of gastroenterology and hepatology
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pub_type: 杂志文章
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pub_type: 杂志文章,评审
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pub_type: 杂志文章
doi:10.1111/j.1440-1746.1998.tb00704.x
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journal_title:Journal of gastroenterology and hepatology
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