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Clin Liver Dis. 2018 Feb;22(1):23-37. doi: 10.1016/j.cld.2017.08.007. Epub 2017 Oct 18.

Pathophysiology of Nonalcoholic Fatty Liver Disease/Nonalcoholic Steatohepatitis.

Author information

1
Swedish Liver Care Network and Organ Care Research, Swedish Medical Center, 1124 Columbia Street, Suite 600, Seattle, WA 98104, USA.
2
Swedish Liver Care Network and Organ Care Research, Swedish Medical Center, 1124 Columbia Street, Suite 600, Seattle, WA 98104, USA. Electronic address: kris.kowdley@swedish.org.

Abstract

Nonalcoholic fatty liver disease (NAFLD) encompasses a spectrum of liver disorders ranging from hepatic steatosis to nonalcoholic steatohepatitis (NASH) and ultimately may lead to cirrhosis. Hepatic steatosis or fatty liver is defined as increased accumulation of lipids in hepatocytes and results from increased production or reduced clearance of hepatic triglycerides or fatty acids. Fatty liver can progress to NASH in a significant proportion of subjects. NASH is a necroinflammatory liver disease governed by multiple pathways that are not completely elucidated. This review describes the main mechanisms that have been reported to contribute to the pathophysiology of NAFLD and NASH.

KEYWORDS:

Fibrosis; Genetic factors; Inflammation; Nonalcoholic fatty liver disease (NAFLD); Nonalcoholic steatohepatitis (NASH)

PMID:
29128059
DOI:
10.1016/j.cld.2017.08.007
[Indexed for MEDLINE]

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