期刊
MEDICAL HYPOTHESES
卷 113, 期 -, 页码 91-97出版社
CHURCHILL LIVINGSTONE
DOI: 10.1016/j.mehy.2018.02.010
关键词
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资金
- Novo Nordisk Foundation
- Danish Council for Independent Research
- Novo Nordisk Fonden [NNF15OC0017314] Funding Source: researchfish
Non-alcoholic fatty liver disease (NAFLD) is a spectrum of liver diseases ranging from steatosis, through nonalcoholic steatohepatitis (NASH) to cirrhosis. The development of fibrosis is the most important factor contributing to NASH-associated morbidity and mortality. Hepatic stellate cells (HSCs) are responsible for extra cellular matrix deposition in conditions of frank hepatocellular injury and are key cells involved in the development of fibrosis. In experimental models and patients with NASH, urea cycle enzyme gene and protein expression is reduced resulting in functional reduction in the in vivo capacity for ureagenesis and subsequent hyperammonemia at a pre-cirrhotic stage. Ammonia has been shown to activate HSCs in vivo and in vitro. Hyperammonemia in the context of NASH may therefore favour the progression of fibrosis and the disease. We therefore hypothesise that ammonia is a potential target for prevention of fibrosis progression of patients with NASH.
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