Effects of prolonged exposure to CO2 on behaviour, hormone secretion and respiratory muscles in young female rats.
Physiol Behav
; 177: 257-262, 2017 Aug 01.
Article
em En
| MEDLINE
| ID: mdl-28501558
ABSTRACT
Atmospheric CO2 concentrations increased significantly over the last century and continuing increases are expected to have significant effects on current ecosystems. This study evaluated the behavioural and physiological (hormone status, muscle structure) effects of prolonged CO2 exposure in young female Wistar rats exposed at 700ppm of CO2 during 6h a day for 15days. Prolonged CO2 exposure, though not continuous, produced significant disturbances in behaviour with an increase in drinking, grooming and resting, and a reduction in rearing, jumping-play and locomotor activity. Furthermore, CO2 exposure was accompanied by increased plasma levels of corticosterone, suggesting that prolonged exposure to CO2 was stressful. The muscular structure can also be modified also when respiratory working conditions change. The expression of myosin heavy chain was significantly affected in the diaphragm and oral respiratory muscles Masseter Superficialis and Anterior Digastric. Modified behaviour and hormonal changes both appear to be at the origin of the observed muscular adaptation.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Comportamento Animal
/
Músculos Respiratórios
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Corticosterona
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Dióxido de Carbono
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Atividade Motora
Limite:
Animals
Idioma:
En
Revista:
Physiol Behav
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
França