Journal article

Hepatocyte glutathione peroxidase-1 deficiency improves hepatic glucose metabolism and decreases steatohepatitis in mice

Troy L Merry, Melanie Tran, Garron T Dodd, Salvatore P Mangiafico, Florian Wiede, Supreet Kaur, Catriona L McLean, Sofianos Andrikopoulos, Tony Tiganis

Diabetologia | SPRINGER | Published : 2016

Abstract

AIMS/HYPOTHESIS: In obesity oxidative stress is thought to contribute to the development of insulin resistance, non-alcoholic fatty liver disease and the progression to non-alcoholic steatohepatitis. Our aim was to examine the precise contributions of hepatocyte-derived H2O2 to liver pathophysiology. METHODS: Glutathione peroxidase (GPX) 1 is an antioxidant enzyme that is abundant in the liver and converts H2O2 to water. We generated Gpx1 lox/lox mice to conditionally delete Gpx1 in hepatocytes (Alb-Cre;Gpx1 lox/lox) and characterised mice fed chow, high-fat or choline-deficient amino-acid-defined (CDAA) diets. RESULTS: Chow-fed Alb-Cre;Gpx1 lox/lox mice did not exhibit any alterations in bo..

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