Abstract | BACKGROUND:
Nonalcoholic fatty liver disease ( NAFLD) refers to an increasingly diagnosed condition involving triglyceride accumulation into hepatocytes resulting in a broad spectrum of liver injury. The progression of NAFLD, a relatively benign condition, to nonalcoholic steatohepatitis (NASH) involves the hepatic infiltration of inflammatory cells and subsequent hepatocellular injury. Ischemia/reperfusion (I/R) injury of the liver is a major complication of liver resection, hepatic trauma, and liver transplantation. To date, there have been no studies that have evaluated the effects of hepatic I/R on models of NASH. OBJECTIVE: Evaluate the effects of hepatic I/R on a mouse model of NASH. METHODS: A mouse model of progressive NASH was developed and evaluated using C57BL/6 mice fed a methionine choline deficient diet for 3, 6, 9, and 12 wk. Mice subsequently underwent 90 min of partial hepatic ischemia with reperfusion of 1, 4, and 8 h. Mice were sacrificed after the indicated periods, and blood and liver samples were taken for analysis. RESULTS: Mice fed the MCD diet showed a rapid induction of hepatic steatosis, inflammation, and fibrosis by 3 wk that persisted over the 12-wk period of diet, as demonstrated by histologic examination, alanine aminotransferase (ALT), and liver content of myeloperoxidase (MPO). The response to I/R in livers with progressive NASH fed MCD diet for 3, 6, 9, and 12 wk showed marked neutrophil recruitment and hepatocyte necrosis. CONCLUSION: These data suggest the inflammatory response from I/R is augmented in livers with NASH histopathology compared with normal liver.
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Authors | Amit D Tevar, Callisia N Clarke, Rebecca Schuster, Jiang Wang, Michael J Edwards, Alex B Lentsch |
Journal | The Journal of surgical research
(J Surg Res)
Vol. 169
Issue 1
Pg. e7-14
(Jul 2011)
ISSN: 1095-8673 [Electronic] United States |
PMID | 21492876
(Publication Type: Journal Article)
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Copyright | Copyright © 2011 Elsevier Inc. All rights reserved. |
Chemical References |
- Methionine
- Peroxidase
- Alanine Transaminase
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Topics |
- Alanine Transaminase
(metabolism)
- Animals
- Diet
- Disease Models, Animal
- Disease Progression
- Fatty Liver
(etiology, metabolism, physiopathology)
- Ischemia
(metabolism, pathology, physiopathology)
- Liver
(blood supply, metabolism, pathology)
- Male
- Methionine
(deficiency)
- Mice
- Mice, Inbred C57BL
- Non-alcoholic Fatty Liver Disease
- Peroxidase
(metabolism)
- Reperfusion Injury
(metabolism, pathology, physiopathology)
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