Effect of H2S on the circadian rhythm of mouse hepatocytes

Feb 10, 2012Lipids in health and disease

Hydrogen sulfide’s effects on daily rhythms in mouse liver cells

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Abstract

Exogenous hydrogen sulfide (H₂S) significantly increased the expression level of sirtuin-1 (SIRT1) in isolated liver cells.

  • Circadian clock genes such as Clock, Per2, Bmal1, and Rev-erbα displayed a gradual decrease in expression levels and peak amplitude in hepatocytes without H₂S.
  • H₂S treatment maintained the expression and amplitude of these circadian clock genes over a certain period.
  • The expression level of SIRT1 was significantly higher in the H₂S group compared to the control group.
  • It is suggested that H₂S may alter the NAD+/NADH content ratio in hepatocytes.
  • Changes in SIRT1 activity could help preserve the circadian rhythm of clock gene expression, potentially influencing lipid metabolism.

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