Acute restraint differently alters defensive responses and fos immunoreactivity in the rat brain

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dc.contributor.authorAndrade, José Simões de [UNIFESP]
dc.contributor.authorAbrão, Renata Oliveira [UNIFESP]
dc.contributor.authorCéspedes, Isabel Cristina [UNIFESP]
dc.contributor.authorGarcia, Marcia Carvalho [UNIFESP]
dc.contributor.authorNascimento, Juliana Olivetti Guzman [UNIFESP]
dc.contributor.authorSpadari-Bratfisch, Regina Celia [UNIFESP]
dc.contributor.authorMelo-Thomas, Liana [UNIFESP]
dc.contributor.authorSilva, Regina Cláudia Barbosa da [UNIFESP]
dc.contributor.authorViana, Milena de Barros [UNIFESP]
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.date.accessioned2016-01-24T14:27:22Z
dc.date.available2016-01-24T14:27:22Z
dc.date.issued2012-06-15
dc.description.abstractResults from a previous study show that rats exposed to acute restraint display anxiogenic-like behavior, evidenced by facilitation of avoidance responses in the elevated T-maze (ETM) model of anxiety. in contrast, escape responses were unaltered by stress exposure. Since ETM avoidance and escape tasks seem to activate distinct sets of brain structures, it is possible that the differences observed with acute restraint are due to particularities in the neurobiological mechanisms which modulate these responses. in the present study, analysis of fos protein immunoreactivity (fos-ir) was used to map areas activated by exposure of male Wistar rats to restraint stress (30 min) previously (30 min) to the ETM. Corticosterone levels were also measured in stressed and non-stressed animals. Confirming previous observations restraint facilitated avoidance performance, an anxiogenic result, while leaving escape unaltered. Performance of the avoidance task increased fos-ir in the frontal cortex, intermediate lateral septum, basolateral amygdala, basomedial amygdala, lateral amygdala, anterior hypothalamus and dorsal raphe nucleus. in contrast, performance of escape increased fos-ir in the ventromedial hypothalamus, dorsolateral periaqueductal gray and locus ceruleus. Both behavioral tasks also increased fos-ir in the dorsomedial hypothalamus. Restraint significantly raised corticosterone levels. Additionally after restraint, fos-ir was predominantly seen in the basolateral amygdala and dorsal raphe of animals submitted to the avoidance task. This data confirms that different sets of brain structures are activated by ETM avoidance and escape tasks and suggests that acute restraint differently alters ETM behavior and the pattern of fos activation in the brain. (C) 2012 Elsevier B.V. All rights reserved.en
dc.description.affiliationFed Univ São Paulo UNIFESP, Dept Biosci, Santos, SP, Brazil
dc.description.affiliationFed Univ São Paulo UNIFESP, Dept Psychiat, São Paulo, Brazil
dc.description.affiliationUnifespFed Univ São Paulo UNIFESP, Dept Biosci, Santos, SP, Brazil
dc.description.affiliationUnifespFed Univ São Paulo UNIFESP, Dept Psychiat, São Paulo, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIDFAPESP: 2011/17471-0
dc.format.extent20-29
dc.identifierhttps://dx.doi.org/10.1016/j.bbr.2012.03.034
dc.identifier.citationBehavioural Brain Research. Amsterdam: Elsevier B.V., v. 232, n. 1, p. 20-29, 2012.
dc.identifier.doi10.1016/j.bbr.2012.03.034
dc.identifier.issn0166-4328
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/34996
dc.identifier.wosWOS:000305595600004
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofBehavioural Brain Research
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rights.licensehttps://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.subjectStressen
dc.subjectRestrainten
dc.subjectAnxietyen
dc.subjectPanicen
dc.subjectCorticosteroneen
dc.subjectfos immunoreactivityen
dc.titleAcute restraint differently alters defensive responses and fos immunoreactivity in the rat brainen
dc.typeinfo:eu-repo/semantics/article
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