Putative mechanisms of environmental chemical-induced steatosis.

International journal of toxicology (2012-12-01)
J Phillip Kaiser, John C Lipscomb, Scott C Wesselkamper
ABSTRACT

Liver disease is a major health issue characterized by several pathological changes, with steatosis (fatty liver) representing a common initial step in its pathogenesis. Steatosis is of critical importance because prevention of fatty liver can obviate downstream pathologies of liver disease (eg, fibrosis). Recent studies have shown a strong correlation between chemical exposure and steatosis. The work described here identifies chemicals on the US Environmental Protection Agency's Integrated Risk Information System (IRIS) that induce steatosis and investigates putative mechanisms by which these chemicals may contribute to this pathological condition. Mitochondrial impairment, insulin resistance, impaired hepatic lipid secretion, and enhanced cytokine production were identified as potential mechanisms that could contribute to steatosis. Taken together, this work is significant because it identifies multiple mechanisms by which environmental chemicals may cause fatty liver and expands our knowledge of the possible role of environmental chemical exposure in the induction and progression of liver disease.

MATERIALS
Product Number
Brand
Product Description

Supelco
Vinyl chloride solution, certified reference material, 2000 μg/mL in methanol
Supelco
Vinyl chloride solution, 200 μg/mL in methanol, analytical standard

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