Sexual behavior and fertility of male rats submitted to prolonged immobilization-induced stress
Braz. j. med. biol. res
; 33(9): 1105-9, Sept. 2000.
Article
em En
| LILACS
| ID: lil-267972
Biblioteca responsável:
BR1.1
ABSTRACT
In order to investigate whether prolonged stress interferes with the onset of sexual behavior at puberty and with fertility at adulthood, prepubertal male Wistar rats (40 days of age) were immobilized 6 h a day for 15 days (up to early puberty) or for 60 days (until sexual maturity). Pubertal stressed rats showed a two-fold increase in the latency for the first mount (probably due to repeated aversive experience in which a change of environment was always followed by immobilization) and a 2.5-fold increase in the frequency of thrusting (indicative of enhanced sexual performance). The apparently stimulatory effect of prolonged stress on the onset of sexual behavior is discussed in terms of increased testosterone level and interference with the complex interchanges between the neurotransmitters/neuropeptides involved in the central control of male sexual activity. Adult stressed animals were mated with normal females, which became pregnant but exhibited a more than two-fold increase in both pre-implantation and post-implantation loss, probably due to a smaller rate of fertilization and/or fertilization with damaged spermatozoa
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Comportamento Sexual
/
Maturidade Sexual
/
Estresse Fisiológico
/
Fertilidade
/
Imobilização
Tipo de estudo:
Observational_studies
Limite:
Animals
Idioma:
En
Revista:
Braz. j. med. biol. res
Assunto da revista:
BIOLOGIA
/
MEDICINA
Ano de publicação:
2000
Tipo de documento:
Article
/
Project document
País de afiliação:
Brasil
País de publicação:
Brasil