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Bempedoic Acid Restores Liver H 2 S Production in a Female Sprague-Dawley Rat Dietary Model of Non-Alcoholic Fatty Liver.

Núria RoglansElena Fauste AlonsoRoger BentanachsAna M VelázquezMadelin Pérez-ArmasCristina DonisMaría I PanaderoMarta AlegretPaola OteroCarlos BocosJuan Carlos Laguna
Published in: International journal of molecular sciences (2022)
We previously demonstrated that treatment with BemA (bempedoic acid), an inhibitor of ATP citrate lyase, significantly reduces fatty liver in a model of liver steatosis (HFHFr-female Sprague-Dawley rat fed a high-fat high-fructose diet). Since the hepatic production of the gasotransmitter H 2 S is impaired in liver disorders, we were interested in determining if the production of H 2 S was altered in our HFHFr model and whether the administration of BemA reversed these changes. We used stored liver samples from a previous study to determine the total and enzymatic H 2 S production, as well as the expression of CBS (cystathionine β-synthase), CSE (cystathionine γ-lyase), and 3MST (3-mercaptopiruvate sulfurtransferase), and the expression/activity of FXR (farnesoid X receptor), a transcription factor involved in regulating CSE expression. Our data show that the HFHFr diet reduces the total and enzymatic production of liver H 2 S, mainly by decreasing the expression of CBS and CSE. Furthermore, BemA treatment restored H 2 S production, increasing the expression of CBS and CSE, providing evidence for the involvement of FXR transcriptional activity and the mTORC1 (mammalian target of rapamycin1)/S6K1 (ribosomal protein S6 kinase beta-1)/PGC1α (peroxisome proliferator receptor gamma coactivator1α) pathway.
Keyphrases
  • poor prognosis
  • transcription factor
  • binding protein
  • physical activity
  • oxidative stress
  • long non coding rna
  • type diabetes
  • weight loss
  • skeletal muscle
  • electronic health record
  • artificial intelligence
  • heat stress