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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/37047
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dc.contributor.authorColombari, Eduardo-
dc.contributor.authorMenani, José Vanderlei-
dc.contributor.authorTalman, W. T.-
dc.date.accessioned2014-05-20T15:26:59Z-
dc.date.accessioned2016-10-25T18:01:41Z-
dc.date.available2014-05-20T15:26:59Z-
dc.date.available2016-10-25T18:01:41Z-
dc.date.issued1996-06-01-
dc.identifierhttp://ajpregu.physiology.org/content/270/6/R1220-
dc.identifier.citationAmerican Journal of Physiology-regulatory Integrative and Comparative Physiology. Bethesda: Amer Physiological Soc, v. 270, n. 6, p. R1220-R1225, 1996.-
dc.identifier.issn0363-6119-
dc.identifier.urihttp://hdl.handle.net/11449/37047-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/37047-
dc.description.abstractIn the present study we investigated whether interruption of the chemoreceptor reflex by an electrolytic lesion of the commissural subnucleus of the nucleus tractus solitarii (commNTS) influenced presser and bradycardic responses induced by microinjection of L-glutamate (L-Glu) into the medial NTS (mNTS) of conscious rats. Seven days after sham lesions, seven rats demonstrated significant presser [change in mean arterial pressure (MAP) = +33 +/- 3 mmHg] and bradycardic [change in heart rate (HR) = -74 +/- 8 beats/min (bpm)] responses to chemoreceptor reflex activation by intravenous injection of KCN. Likewise, L-Glu (1 nmol in 100 nl) injected into the mNTS in sham rats induced presser (+29 +/- 2 mmHg) and bradycardic responses (-90 +/- 8 bpm). However, in 11 rats with lesions in commNTS, presser and bradycardic chemoreceptor reflex responses were abolished, and injection of L-Glu into the mNTS decreased MAP (-14 +/- 6 mmHg) and HR (-59 +/- 16 bpm) as is reported in anesthetized control rats. We conclude that presser responses induced by L-Glu microinjected into the baroreceptor reflex region of mNTS in conscious rats depend on the integrity of the commNTS, which plays an important role in central chemoreceptor reflex pathways.en
dc.format.extentR1220-R1225-
dc.language.isoeng-
dc.publisherAmer Physiological Soc-
dc.sourceWeb of Science-
dc.subjectarterial pressurept
dc.subjectbaroreceptorpt
dc.subjectchemoreceptorpt
dc.subjectexcitatory amino acidspt
dc.subjectKCNpt
dc.subjectmedullapt
dc.subjectnucleus tractus solitariipt
dc.titleCommissural NTS contributes to pressor responses to glutamate injected into the medial NTS of awake ratsen
dc.typeoutro-
dc.contributor.institutionUNIV IOWA-
dc.contributor.institutionVET AFFAIRS MED CTR-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUNIV IOWA, DEPT NEUROL, IOWA CITY, IA 52242 USA-
dc.description.affiliationVET AFFAIRS MED CTR, IOWA CITY, IA 52242 USA-
dc.description.affiliationPAULISTA STATE UNIV, SCH DENT, DEPT PHYSIOL, BR-14801903 ARARAQUARA, SP, BRAZIL-
dc.description.affiliationUnespPAULISTA STATE UNIV, SCH DENT, DEPT PHYSIOL, BR-14801903 ARARAQUARA, SP, BRAZIL-
dc.identifier.wosWOS:A1996UU58900007-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofAmerican Journal of Physiology: Regulatory Integrative and Comparative Physiology-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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