Renin-Angiotensin System Block and Atrial Fibrillation
Authors: Lombardi, Federico; Terranova, Paolo
Source: Current Medicinal Chemistry, Volume 12, Number 11, June 2005 , pp. 1331-1337(7)
Publisher: Bentham Science Publishers
Abstract:Atrial fibrillation is the most common disorder of cardiac rhythm. In spite of diagnosis simplicity, patients with atrial fibrillation are difficult to treat. In the recent years with the description of the phenomenon called remodelling, it has been possible to better define the principle mechanisms responsible for initiation, maintenance and, in some instances, termination of atrial fibrillation. Electrical, mechanical and anatomical remodelling indicate those alterations that, once established, may vanish any attempt to restore sinus rhythm. Atrial fibrosis is probably the most critical component of the remodelling process and appears to be largely mediated by the activation of the Renin-Angiotensin-Aldosterone System. Both experimental and clinical data have confirmed the pro-arrhythmic role of the Renin-Angiotensin-Aldosterone System and demonstrated an anti-arrhythmic effects of ACE-inhibitors and AT1 receptor blockers. Regarding atrial fibrillation, it has been recently reported that the adjunction of AT1 receptor blocker to amiodarone was more effective than the antiarrhythmic drug alone, in reducing arrhythmia recurrence after electrical cardioversion. This and subsequent clinical observations indicate that pharmacological interventions capable of interfering with the electrical and structural remodelling process are of critical importance in the management of patients with atrial fibrillation. ACE inhibitors and AT1 receptor blockers represent new and efficient therapeutical options to contrast the nearly inevitable progression of this arrhythmia towards its permanent form.
Document Type: Review Article
Affiliations: Cardiologia, Dipartimento di Medicina, Chirurgia e Odontoiatria, Osp. San Paolo, University of Milan, via A. di Rudini 8, 20142 Milan, Italy.
Publication date: 2005-06-01
- Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.