NYMC Faculty Publications

Proximal Tubular-Targeted Overexpression of the Cyp4a12-20-HETE Synthase Promotes Salt-Sensitive Hypertension in Male Mice

DOI

10.1152/ajpregu.00089.2020

Journal Title

American Journal of Physiology. Regulatory, Integrative and Comparative Physiology

First Page

87

Last Page

95

Document Type

Article

Publication Date

6-17-2020

Department

Physiology

Second Department

Pharmacology

Abstract

20-Hydroxyeicosatetraenoic acid (20-HETE) has been linked to blood pressure (BP) regulation via actions on the renal microvasculature and tubules. We assessed tubular 20-HETE contribution to hypertension by generating transgenic mice overexpressing the CYP4A12-20-HETE synthase (PT-4a12 mice) under the control of the proximal tubule (PT)-specific promoter, phosphoenolpyruvate carboxykinase (PEPCK). 20-HETE levels in the kidney cortex of male (967±210 vs. 249±69 pg/mg protein), but not female (121±15 vs. 92±11 pg/mg protein) PT-4a12 mice, showed a 2.5-fold increase compared to WT. Renal cortical Cyp4a12 mRNA and CYP4A12 protein in male, but not female PT-4a12 mice increased by 2-3-fold compared to WT. Male PT-4a12 mice displayed elevated BP (142±1 vs. 111±4 mmHg, p

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