Fgf21-Dubosiella axis mediates the protective effects of exercise against NAFLD development.

Abstract

AIM:

To explore the mechanism of gut microbiota mediates protective effects of exercise against non-alcoholic fatty liver disease (NAFLD) development.

MAIN METHODS:

The male C57BL/6 mice were fed with high fat food (HFD) or normal diet (CON) respectively, and the obese mice were randomly divided into sedentariness (HFD) and exercise groups (HFD + Exe). The total intervention period was 18 weeks. Antibiotic treatment and fecal microbiota transplantation were applied to evaluate gut microbiota mediates the protective effects of exercise against NAFLD development. 16S rDNA profiling of gut microbiota and extracorporeal rehydration of Dubosiella newyorkensis were performed to identify the crucial role of Dubosiella in NAFLD improvement during exercise training. FGF21 knock-out mice were used to reveal the potential mechanism of exercise increased the abundance of Dubosiella. RT-PCR, Western blot, Histopathological examinations and Biochemical testing were performed to evaluate the lipid deposition and function in the liver.

KEY FINDINGS:

Treadmill exercise significantly ameliorated hepatic function and mitigated lipid accumulation in NAFLD mice, and these hepatoprotective benefits were mostly mediated by the Dubosiella. In addition, the increased abundance of Dubosiella during exercise training was modulated by FGF21 specifically.

SIGNIFICANCE:

In short, Dubosiella, chiefly regulated by FGF21 signaling during exercise training, has been discovered to govern the protective impacts of exercising counter to the development of NAFLD and exhibits a promising treatment target for NAFLD.

• Authors: Xiaochun Ye, Peng Sun, Shuaiwei Lao, Meiyun Wen, Ruofang Zheng, Yuanyuan Lin, Lipeng Gan, Xia Fan, Ping Wang, Zhiyong Li, Xiaoqing Yan, Longwei Zhao
• Journal: Life sciences (Life Sci) Vol. 334 Pg. 122231 (Dec 01 2023) ISSN: 1879-0631 [Electronic] Netherlands
• PMID: 37935276 (Publication Type: Journal Article)
• Copyright: Copyright © 2023. Published by Elsevier Inc.

Chemical References

• fibroblast growth factor 21
• Lipids

Topics

• Male
• Animals
• Mice
• Non-alcoholic Fatty Liver Disease (prevention & control, pathology)
• Diet, High-Fat (adverse effects)
• Mice, Inbred C57BL
• Exercise
• Lipids