Role Of Raphe In The Body Temperature Regulation Of Precocious Birds
| Autor: | Caroline Cristina Silva, Welex Cândido Silva, Luciane Helena Gargaglioni, Kênia Cardoso Bícego |
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| Jazyk: | Spanish; Castilian |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Revista Cubana de Investigaciones Biomédicas, Vol 38, Iss 5 (2020) |
| Druh dokumentu: | article |
| ISSN: | 0864-0300 1561-3011 |
| Popis: | Introduction: It is demonstrated in mammals that, at least in rats, caudal brain regions, such as raphe nuclei, are involved in the modulation of thermoeffectors for heat loss and heat production, such as peripheral vasodilation/vasoconstriction, nonshivering and shivering thermogenesis. If the same scenario occurs in the other group of endothermic vertebrates, i.e., birds, it is still completely unknown. Objective: To verify the role of raphe in the regulation of body temperature (Tb) in chicken chicks at the first week of life after hatching. Material and Methods: Specifically, in this first experimental approach, we verified the effect of the disinhibition of raphe on body temperature (Tb) of chicks. To this end, Tb was measured in chicks, implanted with a mini temperature sensor in the coelomatic cavity, before and each 10 min up to 2hs after intra-raphe microinjections of the GABA receptor antagonist bicuculline (0.05mM and 0.5mM) or saline (vehicle). Protocols were approved by the local Animal Care Committee (CEUA of FCAV/Unesp, nº 013907/17). Results: Bicuculline (0.05 mM) significantly decreased (P |
| Databáze: | Directory of Open Access Journals |
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