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Effect of losartan on muscle sympathetic activity and baroreceptor function in systemic hypertension


Béchir, M; Enseleit, F; Chenevard, R; Lüscher, T F; Noll, G (2005). Effect of losartan on muscle sympathetic activity and baroreceptor function in systemic hypertension. American Journal of Cardiology, 95(1):129-131.

Abstract

Angiotensin II directly stimulates muscle sympathetic nerve activity and facilitates adrenergic sympathetic transmission. The hypotheses that the chronic blockade of angiotensin II receptors (AT(1) type) reduces muscle sympathetic activity and that there is an interaction with baroreceptor function in patients with mild to moderate hypertension were investigated. Muscle sympathetic nerve activity decreased from 51.7 +/- 3.5 to 45.9 +/- 4.2 bursts/min (p = 0.022), and cardiac baroreceptor sensitivity increased from 3.2 +/- 1.3 to 4.9 +/- 1.8 ms/mm Hg (p = 0.007). This study for the first time demonstrates that in hypertensive patients, chronic AT(1) receptor antagonism inhibits muscle sympathetic nerve activity and that baroreceptor function is improved under these conditions.

Angiotensin II directly stimulates muscle sympathetic nerve activity and facilitates adrenergic sympathetic transmission. The hypotheses that the chronic blockade of angiotensin II receptors (AT(1) type) reduces muscle sympathetic activity and that there is an interaction with baroreceptor function in patients with mild to moderate hypertension were investigated. Muscle sympathetic nerve activity decreased from 51.7 +/- 3.5 to 45.9 +/- 4.2 bursts/min (p = 0.022), and cardiac baroreceptor sensitivity increased from 3.2 +/- 1.3 to 4.9 +/- 1.8 ms/mm Hg (p = 0.007). This study for the first time demonstrates that in hypertensive patients, chronic AT(1) receptor antagonism inhibits muscle sympathetic nerve activity and that baroreceptor function is improved under these conditions.

Citations

10 citations in Web of Science®
11 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Cardiology
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2005
Deposited On:03 Mar 2011 12:00
Last Modified:05 Apr 2016 14:17
Publisher:Elsevier
ISSN:0002-9149
Publisher DOI:10.1016/j.amjcard.2004.08.079
PubMed ID:15619411

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