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Related Experiment Video

Updated: Jan 11, 2026

Mouse Model of Metabolic Dysfunction-Associated Steatotic Liver Disease with Fibrosis
06:26

Mouse Model of Metabolic Dysfunction-Associated Steatotic Liver Disease with Fibrosis

Published on: July 18, 2025

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Time-Restricted Feeding Is Not Effective in Modulating Fibrosis in a Male MASH Model.

Stephany Flores Ramos1,2,3, Kelly A Fogelson1,2,3, Valentina B Muti1

  • 1Division of Gastroenterology, University of California San Diego, San Diego, California.

Journal of Biological Rhythms
|November 18, 2025
PubMed
Summary
This summary is machine-generated.

Time-restricted feeding (TRF) did not prevent metabolic-associated steatohepatitis (MASH) in mice with impaired insulin signaling. Intact insulin sensitivity appears crucial for TRF

Keywords:
circadian rhythmsfeeding patternsinsulin resistancemetabolic rhythmssteatosis

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Area of Science:

  • Metabolic disorders
  • Chronobiology
  • Hepatology

Background:

  • Time-restricted feeding (TRF) consolidates food intake into a specific daily window.
  • TRF ameliorates metabolic risk factors for metabolic-associated steatohepatitis (MASH), including adiposity, insulin resistance, and liver steatosis.
  • Uncertainty remains regarding TRF's direct impact on MASH-related inflammation and fibrosis, and the underlying mechanisms.

Purpose of the Study:

  • To investigate the efficacy of 8-hour TRF in mitigating fibrosis and steatohepatitis.
  • To determine if TRF's protective effects against MASH complications are solely dependent on insulin sensitivity.
  • To examine TRF's impact in a preclinical model (STAM/HFD) that mimics MASH characteristics in an insulin-deficient context.

Main Methods:

  • Utilized the streptozotocin/high-fat diet (STAM/HFD) mouse model to induce MASH characteristics.
  • Administered an 8-hour time-restricted feeding (TRF) intervention.
  • Assessed the development of steatohepatitis and fibrosis in male mice with impaired insulin signaling.

Main Results:

  • TRF failed to prevent the development of MASH in STAM/HFD male mice with impaired insulin signaling.
  • STAM/HFD mice did not develop obesity and exhibited less pronounced circadian behavior disruptions compared to diet-induced obesity models.
  • These findings suggest TRF's benefits in MASH may be contingent on preserved insulin signaling.

Conclusions:

  • Intact insulin signaling is likely essential for TRF to confer protection against MASH.
  • TRF's efficacy in MASH may be limited in conditions characterized by severe insulin deficiency.
  • Further research is needed to elucidate the precise mechanisms linking insulin sensitivity and TRF's metabolic benefits.