[Effect of stress on postnatal growth in weight of rat body and adrenal gland]. / Vliianie stressa na postnatal'nyi rost massy tela i nadpochechnikov krys.
Ontogenez
; 34(5): 371-6, 2003.
Article
em Ru
| MEDLINE
| ID: mdl-14582230
ABSTRACT
Seven-week male Wistar rats weighing 145-155 g were housed 10 (control) or 20 (crowded) per cage (50 x 35 x 15 cm). Groups of control and crowded animals were decapitated within 0.5, 1, 3, 7, 14, 21, 28, 35, 56, 70, and 98 days of experiment. The keeping of rats in crowding conditions induced chronic stress, which developed, according to phase changes in plasma concentration of corticosterone and adrenal content of cholesterol, through the stages alarm, resistance, and exhaustion. The postnatal growth of body weight in the stressed rats was behind that in the control. Under the crowding conditions, the adrenal weight did not undergo significant increase, since the stress-induced hypertrophy of the zona fasciculata was compensated by the proportional suppression of the postnatal growth of the zona reticularis. After 56 days, the postnatal growth of the hypertrophied fascicular zone was delayed in the experimental rats.
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Base de dados:
MEDLINE
Assunto principal:
Tamanho do Órgão
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Estresse Fisiológico
/
Peso Corporal
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Crescimento
Limite:
Animals
Idioma:
Ru
Revista:
Ontogenez
Ano de publicação:
2003
Tipo de documento:
Article