New insights on amygdala : basomedial amygdala regulates the physiological response to social novelty.

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dc.contributor.authorMesquita, Laura Batista Tavares
dc.contributor.authorAbreu, Aline Rezende Ribeiro de
dc.contributor.authorAbreu, Alessandra Rezende Ribeiro de
dc.contributor.authorSouza, Aline Maria Arlindo de
dc.contributor.authorNoronha, Sylvana Izaura Salyba Rendeiro de
dc.contributor.authorSilva, Fernanda Cacilda dos Santos
dc.contributor.authorCampos, Glenda Siqueira Viggiano
dc.contributor.authorChianca Júnior, Deoclécio Alves
dc.contributor.authorMenezes, Rodrigo Cunha Alvim de
dc.date.accessioned2018-02-07T17:16:30Z
dc.date.available2018-02-07T17:16:30Z
dc.date.issued2016
dc.description.abstractThe amygdala has been associated with a variety of functions linked to physiological, behavioral and endocrine responses during emotional situations. This brain region is comprised of multiple sub-nuclei. These subnuclei belong to the same structure, but may be involved in different functions, thereby making the study of each sub-nuclei important. Yet, the involvement of the basomedial amygdala (BMA) in the regulation of emotional states has yet to be defined. Therefore, the aim of our study was to investigate the regulatory role of the BMA on the responses evoked during a social novelty model and whether the regulatory role depended on an interaction with the dorsomedial hypothalamus (DMH). Our results showed that the chemical inhibition of the BMA by the microinjection of muscimol (c-aminobutyric acid (GABAA) agonist) promoted increases in mean arterial pressure (MAP) and heart rate (HR), whereas the chemical inhibition of regions near the BMA did not induce such cardiovascular changes. In contrast, the BMA chemical activation by the bilateral microinjection of bicuculline methiodide (BMI; GABAA antagonist), blocked the increases in MAP and HR observed when an intruder rat was suddenly introduced into the cage of a resident rat, and confined to the small cage for 15 min. Additionally, the increase in HR and MAP induced by BMA inhibition were eliminated by DMH chemical inhibition. Thus, our data reveal that the BMA is under continuous GABAergic influence, and that its hyperactivation can reduce the physiological response induced by a social novelty condition, possibly by inhibiting DMH neurons.pt_BR
dc.identifier.citationMESQUITA, L. T. et al. New insights on amygdala: basomedial amygdala regulates the physiological response to social novelty. Neuroscience, v. 330, p. 181-190, 2016. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0306452216302123?via%3Dihub>. Acesso em: 15 set. 2017.pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.neuroscience.2016.05.053
dc.identifier.issn0306-4522
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/9499
dc.language.isoen_USpt_BR
dc.rightsabertopt_BR
dc.rights.licenseO periódico Neuroscience concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 4210810742656.pt_BR
dc.subjectSocial novelty basomedial amygdalapt_BR
dc.subjectDorsomedial hypothalamuspt_BR
dc.subjectIntruder ratpt_BR
dc.titleNew insights on amygdala : basomedial amygdala regulates the physiological response to social novelty.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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