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dc.contributor.authorButtros, Juliana Beatriz [UNIFESP]
dc.contributor.authorBergamaschi, Cassia Toledo [UNIFESP]
dc.contributor.authorRibeiro, Daniel Araki [UNIFESP]
dc.contributor.authorFracalossi, Ana Carolina Cuzzuol [UNIFESP]
dc.contributor.authorCampos, Ruy Ribeiro [UNIFESP]
dc.date.accessioned2016-01-24T13:52:09Z
dc.date.available2016-01-24T13:52:09Z
dc.date.issued2009-01-01
dc.identifierhttps://dx.doi.org/10.1159/000222245
dc.identifier.citationPharmacology. Basel: Karger, v. 84, n. 1, p. 29-37, 2009.
dc.identifier.issn0031-7012
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/31224
dc.description.abstractBackground/Aims: in the present study, we tested whether or not acute antioxidant treatment with vitamin C is able to protect the heart during myocardial infarction. the effects of vitamin C on the autonomic balancing of the heart and on the histopathological and immunohistochemical changes in response to isoproterenol administration (ISO) were evaluated. Methods: Four groups of male Wistar rats (n = 32) were studied: control; ISO treated; vitamin C treated; ISO + vitamin C treated. ISO 150 mg/kg was administered for 2 consecutive days. Vitamin C (250 mg/kg, oral) was administered 30 min before each ISO treatment. Phenylephrine and sodium nitroprusside were administrated to increase or decrease blood pressure in conscious rats. Results: the baroreceptor reflex index for bradycardia was significantly reduced in the ISO group (control, -3.4 +/- 0.3 beats/mm Hg; ISO -2 +/- 0.4 beats/mm Hg) and vitamin C treatment significantly improved the reflex index (-2.9 +/- 0.7 beats/mm Hg). Treatment with vitamin C showed mild degenerative changes in the myocardial tissue of the ISO group. the antioxidant was able to decrease the inducible nitric oxide (iNOS) expression in rats treated with vitamin C. Conclusion: Vitamin C administration proved to be effective in reducing the extent of myocardial damage during ISO-induced myocardial infarction in rats associated with an iNOS downregulation and improving the autonomic balancing of the heart. Copyright (C)2009 S. Karger AG, Baselen
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent29-37
dc.language.isoeng
dc.publisherKarger
dc.relation.ispartofPharmacology
dc.rightsAcesso restrito
dc.subjectOxidative stressen
dc.subjectVitamin Cen
dc.subjectIschemiaen
dc.subjectAntioxidanten
dc.subjectBaroreceptor reflexen
dc.titleCardioprotective Actions of Ascorbic Acid during Isoproterenol-Induced Acute Myocardial Infarction in Ratsen
dc.typeArtigo
dc.rights.licensehttp://www.karger.com/Services/RightsPermissions
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.description.affiliationUniversidade Federal de São Paulo, Div Cardiovasc, Dept Physiol, Paulista Med Sch, BR-04023060 São Paulo, Brazil
dc.description.affiliationUniversidade Federal de São Paulo, Dept Biosci, BR-04023060 São Paulo, Brazil
dc.description.affiliationUniversidade Federal de São Paulo, Dept Pathol, BR-04023060 São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Div Cardiovasc, Dept Physiol, Paulista Med Sch, BR-04023060 São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Biosci, BR-04023060 São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Pathol, BR-04023060 São Paulo, Brazil
dc.description.sponsorshipIDFAPESP: 04/15969-8
dc.identifier.doi10.1159/000222245
dc.description.sourceWeb of Science
dc.identifier.wosWOS:000267841000005


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