Knockout of the Circadian Clock Protein PER1 (Period1) Exacerbates Hypertension and Increases Kidney Injury in Dahl Salt-Sensitive Rats

Sep 12, 2022Hypertension (Dallas, Tex. : 1979)

Removing the Body Clock Protein PER1 May Worsen High Blood Pressure and Kidney Damage in Salt-Sensitive Rats

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Abstract

Loss of PER1 in Dahl salt-sensitive rats is associated with worsened salt-sensitive hypertension and renal damage.

  • Male Dahl salt-sensitive rats with a global knockout of PER1 developed hypertension after three weeks on a high-salt diet.
  • These rats showed increased variability in mean arterial pressure rhythms despite being kept on a normal light:dark cycle.
  • Sodium excretion decreased in the rats on the high-salt diet.
  • Creatinine clearance, an indicator of renal function, was reduced in these rats.
  • Higher plasma aldosterone levels were observed in the salt-sensitive rats, indicating altered hormonal responses.

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