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dc.contributor.authorBruder-Nascimento, Thiago-
dc.contributor.authorSilva, Samuel T.-
dc.contributor.authorBoer, Patrícia A.-
dc.contributor.authorCordellini, Sandra-
dc.date.accessioned2015-08-26T19:21:59Z-
dc.date.accessioned2016-10-25T20:57:28Z-
dc.date.available2015-08-26T19:21:59Z-
dc.date.available2016-10-25T20:57:28Z-
dc.date.issued2015-06-01-
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-35552015000300177&lng=en&nrm=iso&tlng=en-
dc.identifier.citationBrazilian Journal of Physical Therapy, v. 19, n. 3, p. 177-185, 2015.-
dc.identifier.issn1413-3555-
dc.identifier.urihttp://hdl.handle.net/11449/127471-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/127471-
dc.description.abstractBackground: Physical exercise may modify biologic stress responses. Objective: To investigate the impact of exercise training on vascular alterations induced by acute stress, focusing on nitric oxide and cyclooxygenase pathways. Method: Wistar rats were separated into: sedentary, trained (60-min swimming, 5 days/week during 8 weeks, carrying a 5% body-weight load), stressed (2 h-immobilization), and trained/stressed. Response curves for noradrenaline, in the absence and presence of L-NAME or indomethacin, were obtained in intact and denuded aortas (n=7-10). Results: None of the procedures altered the denuded aorta reactivity. Intact aortas from stressed, trained, and trained/stressed rats showed similar reduction in noradrenaline maximal responses (sedentary 3.54±0.15, stressed 2.80±0.10*, trained 2.82±0.11*, trained/stressed 2.97± 0.21*, *P<0.05 relate to sedentary). Endothelium removal and L-NAME abolished this hyporeactivity in all experimental groups, except in trained/stressed rats that showed a partial aorta reactivity recovery in L-NAME presence (L-NAME: sedentary 5.23±0,26#, stressed 5.55±0.38#, trained 5.28±0.30#, trained/stressed 4.42±0.41, #P<0.05 related to trained/stressed). Indomethacin determined a decrease in sensitivity (EC50) in intact aortas of trained rats without abolishing the aortal hyporeactivity in trained, stressed, and trained/stressed rats. Conclusions: Exercise-induced vascular adaptive response involved an increase in endothelial vasodilator prostaglandins and nitric oxide. Stress-induced vascular adaptive response involved an increase in endothelial nitric oxide. Beside the involvement of the endothelial nitric oxide pathway, the vascular response of trained/stressed rats involved an additional mechanism yet to be elucidated. These findings advance on the understanding of the vascular processes after exercise and stress alone and in combination.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.format.extent177-185-
dc.language.isoeng-
dc.publisherAssociação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia-
dc.sourceSciELO-
dc.subjectVasodilator prostanoidsen
dc.subjectNitric oxideen
dc.subjectExercise trainingen
dc.subjectAcute stressen
dc.subjectAorta reactivityen
dc.subjectPhysical therapyen
dc.titleEffects of exercise training on stress-induced vascular reactivity alterations: role of nitric oxide and prostanoidsen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)-
dc.description.affiliationUniversidade Estadual Paulista Instituto de Biociências Departamento de Farmacologia-
dc.description.affiliationUNESP Faculdade de Ciências Agronômicas Departamento de Proteção Vegetal-
dc.description.affiliationUniversidade Estadual de Campinas Faculdade de Ciências Médicas-
dc.description.affiliationUnespUniversidade Estadual Paulista Instituto de Biociências Departamento de Farmacologia-
dc.description.affiliationUnespUNESP Faculdade de Ciências Agronômicas Departamento de Proteção Vegetal-
dc.description.sponsorshipIdFAPESP: 2006/57200-8-
dc.identifier.doihttp://dx.doi.org/10.1590/bjpt-rbf.2014.0088-
dc.identifier.scieloS1413-35552015000300177-
dc.rights.accessRightsAcesso aberto-
dc.identifier.fileS1413-35552015000300177.pdf-
dc.relation.ispartofBrazilian Journal of Physical Therapy-
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