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dc.contributor.authorZamo, Fernanda de Souza [UNIFESP]
dc.contributor.authorBarauna, Valério Garrone
dc.contributor.authorChiavegatto, Silvana
dc.contributor.authorIrigoyen, Maria Cláudia [UNIFESP]
dc.contributor.authorOliveira, Edilamar Menezes de
dc.identifier.citationLife Sciences. Oxford: Pergamon-Elsevier B.V., v. 89, n. 3-4, p. 93-99, 2011.
dc.description.abstractAim: To investigate the effects of swimming training on the renin-angiotensin system (RAS) during the development of hypertensive disease.Main methods: Male spontaneously hypertensive rats (SHR) were randomized into: sedentary young (SY), trained young (TV), sedentary adult (SA), and trained adult (TA) groups. Swimming was performed 5 times/wk/8wks.Key findings: Trained young and adult rats showed both decreased systolic and mean blood pressure, and bradycardia after the training protocol. the left ventricular hypertrophy (LVH) was observed only in the TA group (12.7%), but there was no increase on the collagen volume fraction. Regarding the components of the RAS, TV showed lower activity and gene expression of angiotensinogen (AGT) compared to SY. the TA group showed lower activity of circulatory RAS components, such as decreased serum ACE activity and plasma renin activity compared to SA. However, depending on the age, although there were marked differences in the modulation of the RAS by training, both trained groups showed a reduction in circulating angiotensin II levels which may explain the lower blood pressure in both groups after swimming training.Significance: Swimming training regulates the RAS differently in adult and young SHR rats. Decreased local cardiac RAS may have prevented the LVH exercise-induced in the TV group. Both groups decreased serum angiotensin II content, which may, at least in part, contribute to the lowering blood pressure effect of exercise training. (C) 2011 Elsevier Inc. All rights reserved.en
dc.publisherElsevier B.V.
dc.relation.ispartofLife Sciences
dc.rightsAcesso aberto
dc.subjectCardiac hypertrophyen
dc.subjectRenin-angiotensin systemen
dc.subjectBlood pressureen
dc.titleThe renin-angiotensin system is modulated by swimming training depending on the age of spontaneously hypertensive ratsen
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.description.affiliationUniv São Paulo, Sch Phys Educ & Sport, Biochem Lab, BR-05508900 São Paulo, Brazil
dc.description.affiliationUniv São Paulo Med Sch, Heart Inst InCor, Hypertens Unit, São Paulo, SP, Brazil
dc.description.affiliationUniversidade Federal de São Paulo, Dept Med, Div Nephrol, São Paulo, SP, Brazil
dc.description.affiliationUniv São Paulo, Inst Biomed Sci, Dept Pharmacol, BR-05508900 São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Med, Div Nephrol, São Paulo, SP, Brazil
dc.description.sourceWeb of Science
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