Chronodisruption by chronic jetlag impacts metabolic and gastrointestinal homeostasis in male mice

Jun 9, 2021Acta physiologica (Oxford, England)

Chronic jetlag disrupts daily rhythms and affects metabolism and gut health in male mice

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Abstract

Chronic jetlag increased body weight gain and disrupted the day/night food intake pattern.

  • Chronic jetlag led to a phase-delay in the rhythm of faecal short-chain fatty acids (SCFAs).
  • The shift in SCFA levels paralleled changes in the expression of clock genes in the colonic mucosa.
  • Jetlag abolished rhythmic patterns in the expression of certain gut hormones, including Tnfα and proglucagon.
  • A dampening of plasma glucagon-like peptide-1 levels was observed, while ghrelin levels remained unchanged.
  • In genetically modified mice lacking a functional circadian clock, rhythms in ghrelin expression were lost, indicating a potential link between circadian rhythms and hormone regulation.

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