Direct and indirect inhibition of the circadian clock protein Per1: effects on ENaC and blood pressure

Feb 14, 2019American journal of physiology. Renal physiology

How direct and indirect blocking of the body’s daily clock protein Per1 affects kidney salt channels and blood pressure

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Abstract

Loss of the circadian clock protein Period 1 (Per1) is associated with protection from hypertension in mice.

  • Global Per1 knockout mice on a high-salt diet with mineralocorticoid treatment show reduced hypertension.
  • Inhibition of epithelial sodium channels (ENaC) leads to changes in blood pressure regulation and urinary sodium excretion.
  • Pharmacological inhibition of Per1 nuclear entry alters the expression of Per1 target genes and lowers blood pressure.
  • Genetic knockdown of Per1 in amphibian kidney cells demonstrates decreased activity of ENaC at the single channel level.

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