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Role of angiotensin II in arterial pressure and renal hemodynamics in rats with altered renal development: age- and sex-dependent differences

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dc.contributor.authorReverte, Virginia
dc.contributor.authorTapia, Antonio
dc.contributor.authorBaile, Goretti
dc.contributor.authorGambini, Juan
dc.contributor.authorGiménez, Ignacio
dc.contributor.authorLlinas, María Teresa
dc.contributor.authorSalazar, F. Javier
dc.contributor.departmentFisiología
dc.date.accessioned2025-03-18T12:42:43Z
dc.date.available2025-03-18T12:42:43Z
dc.date.issued2013-01-01
dc.description© 2013 American Physiological Society This document is the accepted version of a published work that appeared in final form in American Journal of Physiology-Renal Physiology. . This document is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by/4.0 To access the final edited and published work see: https://doi.org/10.1152/ajprenal.00424.2012 Facultades, Departamentos, Servicios y Escuelas::Departamentos de la UMU:: Fisiología
dc.description.abstractNumerous studies have demonstrated that angiotensin II (ANG II) is involved in hypertension and renal changes occurring as a consequence of an adverse event during renal development. However, it was unknown whether this involvement is sex and age dependent. This study examines whether the increments in arterial pressure (AP) and in the renal sensitivity to ANG II are sex and age dependent in rats with altered renal development. It also evaluates whether the ANG II effects are accompanied by increments in AT1 receptors and oxidative stress. Experiments were performed in 3- to 4- and 10- to 11-mo-old rats treated with vehicle or an AT1 receptor antagonist (ARAnp) during the nephrogenic period. ARAnp-treated rats were hypertensive, but an age-dependent rise in AP was only found in males. Three days of treatment with candesartan (7 mg·kg−1·day−1) led to a fall of AP that was greater (P < 0.05) in male than in female 10- to 11-mo-old ARAnp-treated rats. Oxidated proteins were elevated (P < 0.05), and the decrease in AP elicited by candesartan was reduced (P < 0.05) when these rats are also treated with tempol (18 mg·kg−1·day−1). Hypertension was not maintained by an elevation of AT1 receptors in kidneys and mesenteric arteries. The acute renal hemodynamic response to ANG II (30 ng·kg−1·min−1) was similarly enhanced (P < 0.05) in both sexes of ARAnp-treated rats at 3–4 but not at 10–11 mo of age. Our results suggest that an adverse event during the nephrogenic period induces an ANG II-dependent increment in AP that is aggravated only in males during aging and that oxidative stress but not an increase in AT1 receptor contributes to the rise in AP. This study also shows that the renal hemodynamic sensitivity to ANG II is transitorily enhanced in both sexes of rats with altered renal development.es
dc.formatapplication/pdfes
dc.format.extent30
dc.identifier.citationAmerican Journal of Physiology-Renal Physiology, 304(1), F33-F40
dc.identifier.doihttps://doi.org/10.1152/ajprenal.00424.2012
dc.identifier.issnPrint.: 1931-857X
dc.identifier.issnElectronic.: 1522-1466
dc.identifier.urihttp://hdl.handle.net/10201/151790
dc.languageenges
dc.relationSin financiación externa a la Universidades
dc.relation.publisherversionhttps://journals.physiology.org/doi/full/10.1152/ajprenal.00424.2012
dc.rightsinfo:eu-repo/semantics/openAccesses
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectAngiotensin II
dc.subjectSex- and ageing-dependent changes
dc.subjectFetal programming
dc.subjectHypertension
dc.subjectRenal function
dc.subjectOxidative stress
dc.titleRole of angiotensin II in arterial pressure and renal hemodynamics in rats with altered renal development: age- and sex-dependent differenceses
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
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