Salt-sensitive hypertension is associated with dysfunctional Cyp4a10 gene and kidney epithelial sodium channel

Kiyoshi Nakagawa, Vijaykumar R. Holla, Yuan Wei, Wen Hui Wang, Arnaldo Gatica, Shouzou Wei, Shaojun Mei, Crystal M. Miller, Ryong Cha Dae, Edward Price, Roy Zent, Ambra Pozzi, Matthew D. Breyer, Youfei Guan, John R. Falck, Michael R. Waterman, Jorge H. Capdevila

    Research output: Contribution to journalArticlepeer-review

    114 Citations (Scopus)

    Abstract

    Functional and biochemical data have suggested a role for the cytochrome P450 arachidonate monooxygenases in the pathophysiology of hypertension, a leading cause of cardiovascular, cerebral, and renal morbidity and mortality. We show here that disruption of the murine cytochrome P450, family 4, subfamily a, polypeptide 10 (Cyp4a10) gene causes a type of hypertension that is, like most human hypertension, dietary salt sensitive. Cyp4a10-/- mice fed low-salt diets were normotensive but became hypertensive when fed normal or high-salt diets. Hypertensive Cyp4a10-/- mice had a dysfunctional kidney epithelial sodium channel and became normotensive when administered amiloride, a selective inhibitor of this sodium channel. These studies (a) establish a physiological role for the arachidonate monooxygenases in renal sodium reabsorption and blood pressure regulation, (b) demonstrate that a dysfunctional Cyp4a10 gene causes alterations in the gating activity of the kidney epithelial sodium channel, and (c) identify a conceptually novel approach for studies of the molecular basis of human hypertension. It is expected that these results could lead to new strategies for the early diagnosis and clinical management of this devastating disease.

    Original languageEnglish
    Pages (from-to)1696-1702
    Number of pages7
    JournalJournal of Clinical Investigation
    Volume116
    Issue number6
    DOIs
    Publication statusPublished - 2006 Jun 1

    ASJC Scopus subject areas

    • Medicine(all)

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