Disturbed mitochondrial redox state and tissue energy charge in cholestasis

J Biochem Mol Toxicol. 2021 Sep;35(9):e22846. doi: 10.1002/jbt.22846. Epub 2021 Jul 12.

Abstract

The liver is the primary organ affected by cholestasis. However, the brain, skeletal muscle, heart, and kidney are also severely influenced by cholestasis/cirrhosis. However, little is known about the molecular mechanisms of organ injury in cholestasis. The current study was designed to evaluate the mitochondrial glutathione redox state as a significant index in cell death. Moreover, tissue energy charge (EC) was calculated. Rats underwent bile duct ligation (BDL) and the brain, heart, liver, kidney, and skeletal muscle mitochondria were assessed at scheduled time intervals (3, 7, 14, and 28 days after BDL). A significant decrease in mitochondrial glutathione redox state and EC was detected in BDL animals. Moreover, disturbed mitochondrial indices were evident in different organs of BDL rats. These data could offer new insight into the mechanisms of organ injury and the source of oxidative stress during cholestasis and might provide novel therapeutic strategies against these complications.

Keywords: bioenergetics; cirrhosis; energy crisis; oxidative stress; redox potential.

MeSH terms

  • Animals
  • Cholestasis / metabolism*
  • Cholestasis / pathology
  • Disease Models, Animal
  • Energy Metabolism*
  • Male
  • Mitochondria, Liver / metabolism*
  • Mitochondria, Liver / pathology
  • Mitochondria, Muscle / metabolism*
  • Mitochondria, Muscle / pathology
  • Organ Specificity
  • Oxidation-Reduction
  • Rats
  • Rats, Sprague-Dawley