Cardiorespiratory and thermal responses to hypercapnia in chickens exposed to CO2 during embryonic development

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorNational Institute of Science and Technology – Comparative Physiology (INCT- Fisiologia Comparada)-
Autor(es): dc.contributorUniversidade Federal de Minas Gerais (UFMG)-
Autor(es): dc.creatorRocha, Aline C.G. [UNESP]-
Autor(es): dc.creatorEspinha, L.ívia P. [UNESP]-
Autor(es): dc.creatorSantos, Kassia M. [UNESP]-
Autor(es): dc.creatorAlmeida, Ayla R. [UNESP]-
Autor(es): dc.creatorMacari, Marcos [UNESP]-
Autor(es): dc.creatorBícego, Kênia C. [UNESP]-
Autor(es): dc.creatorGargaglioni, Luciane H. [UNESP]-
Autor(es): dc.creatorda Silva, Glauber S.F. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:27:50Z-
Data de disponibilização: dc.date.available2022-02-22T00:27:50Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.resp.2019.103317-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/199608-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/199608-
Descrição: dc.descriptionThe concentration of CO2 in the environment surrounding the embryo impacts development and may also influence the cardiorespiratory responses after hatching. Therefore, we aimed to evaluate the cardiorespiratory and thermal responses to hypercapnia in chicks that were exposed to CO2 during embryonic development, i.e., incubation. Embryos were incubated without and with a gradual increase in CO2 concentration up to 1 % during the first ten days of incubation. Ten-day-old chicks (males and females) were again acutely exposed to hypercapnia (7 % CO2), or to room air (normocapnia) and pulmonary ventilation, arterial pH and blood gases, arterial blood pressure and heart rate, body temperature (Tb) and oxygen consumption (V⋅O2) were measured. Compared to control animals, male chicks incubated with 1 % CO2 presented an attenuated ventilatory response to hypercapnia (P < 0.05), whereas no difference was found in the hypercapnic ventilatory response in both female chick groups (0 % vs 1 % CO2 incubation). Hypercapnia induced bradycardia in all groups (P < 0.001). The CO2 exposure during incubation did not alter the cardiovascular responses to hypercapnia in post-hatch animals. There were no significant effects of incubation treatment (0 % vs 1 % CO2) or sex in the mean arterial pressure, Tb, and V⋅O2 of animals in normocapnia and hypercapnia. As for the V⋅E/V⋅O2, hypercapnia caused an increase in both groups (P < 0.05), regardless of incubation treatment. In conclusion, among cardiorespiratory and metabolic variables, the ventilatory response to hypercapnia can be attenuated by pre-exposure to 1 % CO2 during embryonic development, especially in male chicks up to 10 days.-
Descrição: dc.descriptionDepartment of Animal Morphology and Physiology College of Agricultural and Veterinarian Sciences São Paulo State University (FCAV/UNESP)-
Descrição: dc.descriptionNational Institute of Science and Technology – Comparative Physiology (INCT- Fisiologia Comparada)-
Descrição: dc.descriptionCurrent address: Institute of Biological Science Department of Physiology and Biophysics Federal University of Minas Gerais (ICB/UFMG)-
Descrição: dc.descriptionDepartment of Animal Morphology and Physiology College of Agricultural and Veterinarian Sciences São Paulo State University (FCAV/UNESP)-
Idioma: dc.languageen-
Relação: dc.relationRespiratory Physiology and Neurobiology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectArterial pressure and heart rate-
Palavras-chave: dc.subjectBody temperature-
Palavras-chave: dc.subjectChicken embryo-
Palavras-chave: dc.subjectChicks-
Palavras-chave: dc.subjectCO2 exposure-
Palavras-chave: dc.subjectEmbryonic development-
Palavras-chave: dc.subjectMetabolic rate-
Palavras-chave: dc.subjectPulmonary ventilation-
Título: dc.titleCardiorespiratory and thermal responses to hypercapnia in chickens exposed to CO2 during embryonic development-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.