Chronic everolimus treatment of high-fat diet mice leads to a reduction in obesity but impaired glucose tolerance

Geng Ruei Chang*, Po Hsun Hou, Chao Min Wang, Ching Feng Wu, Huang Kai Su, Huei Jyuan Liao, To Pang Chen*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

9 Scopus citations

Abstract

Everolimus, which inhibits mTOR kinase activity and is clinically used in graft rejection treatment, may have a two-sided influence on metabolic syndrome; its role in obesity and hyperglycemic in animals and humans, however, has been explored insufficiently. This study further determined how continual everolimus treatment affects glucose homeostasis and body weight control in C57BL6/J mice with obesity. An obesity mouse model was developed by administering a high-fat diet (HFD) to C57BL6/J mice over 12 weeks. The experimental group, while continuing their HFD consumption, were administered everolimus daily for 8 weeks. Metabolic parameters, glucose tolerance, fatty liver score, endocrine profile, insulin sensitivity index (ISI), insulin resistance (IR) index, and Akt phosphorylation, GLUT4, TNF-α, and IL-1 levels were measured in vivo. Compared with the control group, the everolimus group gained less body weight and had smaller adipocytes and lower fat pad weight; triglyceride (serum and hepatic), patatin-like phospholipase domain-containing 3, and fatty acid synthase levels; fatty liver scores; and glucose tolerance test values—all despite consuming more food. However, the everolimus group exhibited decreased ISI and muscle Akt phosphorylation and GLUT4 expression as well as impaired glucose tolerance and serum TNF-α and IL-1β levels—even when insulin levels were high. In conclusion, continual everolimus treatment may lead to diabetes with glucose intolerance and IR.

Original languageEnglish
Article numbere00732
JournalPharmacology Research and Perspectives
Volume9
Issue number2
DOIs
StatePublished - 04 2021

Bibliographical note

Publisher Copyright:
© 2021 The Authors. Pharmacology Research & Perspectives published by John Wiley & Sons Ltd, British Pharmacological Society and American Society for Pharmacology and Experimental Therapeutics and John Wiley & Sons Ltd.

Keywords

  • adipocyte
  • everolimus
  • glucose intolerance
  • insulin sensitivity
  • obesity

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