Adrenal Tissue-Specific Deletion of TASK Channels Causes Aldosterone-Driven Angiotensin II–Independent Hypertension. Issue 2 (February 2019)

• Record Type: Journal Article
• Authors: Guagliardo, Nick A.; Yao, Junlan; Stipes, Eric J.; Cechova, Sylvia; Le, Thu H.; Bayliss, Douglas A.; Breault, David T.; Barrett, Paula Q.
• Is Part Of: Hypertension. Volume 73:Issue 2(2019)
• Publication Date: 2019-02
• Subjects: aldosterone -- angiotensin II -- blood pressure -- hypertension -- renin; Hypertension -- Periodicals; Hypertension -- Treatment -- Periodicals; 616.132005
• DOI: 10.1161/HYPERTENSIONAHA.118.11962
• Languages: English
• ISSNs: 0194-911X

Abstract

Abstract : The renin-angiotensin system tightly controls aldosterone synthesis. Dysregulation is evident in hypertension (primary aldosteronism), low renin, and resistant hypertension) but also can exist in normotension. Whether chronic, mild aldosterone autonomy can elicit hypertension remains untested. Previously, we reported that global genetic deletion of 2 pore-domain TWIK-relative acid-sensitive potassium channels, TASK-1 and TASK-3, from mice produces striking aldosterone excess, low renin, and hypertension. Here, we deleted TASK-1 and TASK-3 channels selectively from zona glomerulosa cells and generated a model of mild aldosterone autonomy with attendant hypertension that is aldosterone-driven and Ang II (angiotensin II)–independent. This study shows that a zona glomerulosa–specific channel defect can produce mild autonomous hyperaldosteronism sufficient to cause chronic blood pressure elevation. Abstract : Supplemental Digital Content is available in the text.