Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 24, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/ijms24129996
Keywords
fatty liver; metabolism; ER stress; animal models; nutrition
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Nonalcoholic fatty liver disease (NAFLD) is a common liver disease caused by fat accumulation in the liver without excess alcohol use or other liver disease causes. Its complications include cirrhosis, liver failure, hepatocellular carcinoma, and death. The pathophysiology of NAFLD, including insulin resistance and inflammation, remains poorly understood. Animal models have played a crucial role in defining these mechanisms and developing therapies for NAFLD.
Nonalcoholic fatty liver disease (NAFLD) is a range of pathologies arising from fat accumulation in the liver in the absence of excess alcohol use or other causes of liver disease. Its complications include cirrhosis and liver failure, hepatocellular carcinoma, and eventual death. NAFLD is the most common cause of liver disease globally and is estimated to affect nearly one-third of individuals in the United States. Despite knowledge that the incidence and prevalence of NAFLD are increasing, the pathophysiology of the disease and its progression to cirrhosis remain insufficiently understood. The molecular pathogenesis of NAFLD involves insulin resistance, inflammation, oxidative stress, and endoplasmic reticulum stress. Better insight into these molecular pathways would allow for therapies that target specific stages of NAFLD. Preclinical animal models have aided in defining these mechanisms and have served as platforms for screening and testing of potential therapeutic approaches. In this review, we will discuss the cellular and molecular mechanisms thought to contribute to NAFLD, with a focus on the role of animal models in elucidating these mechanisms and in developing therapies.
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