The Angiotensin II Type 2 Receptor in Brain Functions: An Update

Angiotensin II (Ang II) is the main active product of the renin-angiotensin system (RAS), mediating its action via two major receptors, namely, the Ang II type 1 (AT1) receptor and the type 2 (AT2) receptor. Recent results also implicate several other members of the renin-angiotensin system in vario...

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Main Authors: Marie-Odile Guimond, Nicole Gallo-Payet
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:International Journal of Hypertension
Online Access:http://dx.doi.org/10.1155/2012/351758
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author Marie-Odile Guimond
Nicole Gallo-Payet
author_facet Marie-Odile Guimond
Nicole Gallo-Payet
author_sort Marie-Odile Guimond
collection DOAJ
description Angiotensin II (Ang II) is the main active product of the renin-angiotensin system (RAS), mediating its action via two major receptors, namely, the Ang II type 1 (AT1) receptor and the type 2 (AT2) receptor. Recent results also implicate several other members of the renin-angiotensin system in various aspects of brain functions. The first aim of this paper is to summarize the current state of knowledge regarding the properties and signaling of the AT2 receptor, its expression in the brain, and its well-established effects. Secondly, we will highlight the potential role of the AT2 receptor in cognitive function, neurological disorders and in the regulation of appetite and the possible link with development of metabolic disorders. The potential utility of novel nonpeptide selective AT2 receptor ligands in clarifying potential roles of this receptor in physiology will also be discussed. If confirmed, these new pharmacological tools should help to improve impaired cognitive performance, not only through its action on brain microcirculation and inflammation, but also through more specific effects on neurons. However, the overall physiological relevance of the AT2 receptor in the brain must also consider the Ang IV/AT4 receptor.
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spelling doaj-art-6aa10cc726f64d3ebd367fed38b2a5602025-02-03T01:10:29ZengWileyInternational Journal of Hypertension2090-03842090-03922012-01-01201210.1155/2012/351758351758The Angiotensin II Type 2 Receptor in Brain Functions: An UpdateMarie-Odile Guimond0Nicole Gallo-Payet1Division of Endocrinology, Department of Medicine, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, J1H 5N4, CanadaDivision of Endocrinology, Department of Medicine, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, J1H 5N4, CanadaAngiotensin II (Ang II) is the main active product of the renin-angiotensin system (RAS), mediating its action via two major receptors, namely, the Ang II type 1 (AT1) receptor and the type 2 (AT2) receptor. Recent results also implicate several other members of the renin-angiotensin system in various aspects of brain functions. The first aim of this paper is to summarize the current state of knowledge regarding the properties and signaling of the AT2 receptor, its expression in the brain, and its well-established effects. Secondly, we will highlight the potential role of the AT2 receptor in cognitive function, neurological disorders and in the regulation of appetite and the possible link with development of metabolic disorders. The potential utility of novel nonpeptide selective AT2 receptor ligands in clarifying potential roles of this receptor in physiology will also be discussed. If confirmed, these new pharmacological tools should help to improve impaired cognitive performance, not only through its action on brain microcirculation and inflammation, but also through more specific effects on neurons. However, the overall physiological relevance of the AT2 receptor in the brain must also consider the Ang IV/AT4 receptor.http://dx.doi.org/10.1155/2012/351758
spellingShingle Marie-Odile Guimond
Nicole Gallo-Payet
The Angiotensin II Type 2 Receptor in Brain Functions: An Update
International Journal of Hypertension
title The Angiotensin II Type 2 Receptor in Brain Functions: An Update
title_full The Angiotensin II Type 2 Receptor in Brain Functions: An Update
title_fullStr The Angiotensin II Type 2 Receptor in Brain Functions: An Update
title_full_unstemmed The Angiotensin II Type 2 Receptor in Brain Functions: An Update
title_short The Angiotensin II Type 2 Receptor in Brain Functions: An Update
title_sort angiotensin ii type 2 receptor in brain functions an update
url http://dx.doi.org/10.1155/2012/351758
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