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Impact of nonalcoholic fatty liver disease on toxicokinetics of tetrachloroethylene in mice

ABSTRACT: We report the effect of NAFLD on liver gene expression changes that could impact tetrachloroethhylene metabolism Methods: We fed male C57Bl/6J mice a base diet (BD), high fat (HFD), or methionine/choline/folate deficient high fat diet (MCD) for 8 weeks and then treated them with vehicle or tetrachloroethylene (PERC, 300 mg/kg ig). We only report "basal" differences herein (aka vehicle-treated). Results: We report that there were diet-specific differences in xenobiotic metabolizing genes, and that these genes may be responsible for NAFLD-induced disruption in PERC metabolism

ORGANISM(S): Mus musculus

PROVIDER: GSE93132 | GEO | 2017/01/05

SECONDARY ACCESSION(S): PRJNA360108

REPOSITORIES: GEO

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Project description:Objective: Nonalcoholic fatty liver disease (NAFLD) is linked to obesity and diabetes, suggesting an important role of adipose tissue in the pathogenesis of NAFLD. Here we aim to investigate the interaction between adipose tissue and liver in NAFLD, and identify potential early plasma markers that predict NASH. Research Design and Methods: C57Bl/6 mice were chronically fed a high fat diet to induce NAFLD and compared with mice fed low fat diet. Extensive histological and phenotypical analyses coupled with a time-course study of plasma proteins using multiplex assay was performed. Results: Mice exhibited pronounced heterogeneity in liver histological scoring, leading to classification into 4 subgroups: LF-low (LFL) responders displaying normal liver morphology, LF-high (LFH) responders showing benign hepatic steatosis, HF-low (HFL) responders displaying pre-NASH with macrovesicular lipid droplets, and HF-high (HFH) responders exhibiting overt NASH characterized by ballooning of hepatocytes, presence of Mallory bodies, and activated inflammatory cells. Compared to HFL responders, HFH mice gained weight more rapidly and exhibited adipose tissue dysfunction characterized by decreased final fat mass, enhanced macrophage infiltration and inflammation, and adipose tissue remodelling. Plasma haptoglobin, IL-1β, TIMP-1, adiponectin and leptin were significantly changed in HFH mice. Multivariate analysis indicated that in addition to leptin, plasma CRP, haptoglobin, eotaxin and MIP-1α early in the intervention were positively associated with liver triglycerides. Intermediate prognostic markers of liver triglycerides included IL-18, IL-1β, MIP-1γ and MIP-2, whereas insulin, TIMP-1, GCP-2 and MPO emerged as late markers. Conclusions: Our data support the existence of a tight relationship between adipose tissue dysfunction and NASH pathogenesis and point to several novel potential predictive biomarkers for NASH. Keywords: Expression profiling by array Male wildtype C57Bl/6 mice were fed LFD or HFD for 21 weeks. Mice were divided into 4 groups based on liver histology.

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Impact of nonalcoholic fatty liver disease on toxicokinetics of tetrachloroethylene in mice

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