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Pituitary-gonadal function in adult male rats subjected to chronic water restriction
water restriction protein-calorie deficit circadian rhythms FSH LH testosterone acute stress
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2009/2/23
The effect of water restriction on the pituitary-gonadal axis has been studied in adult male rats. Water restriction did not modify FSH, LH and testosterone levels. However, both LH and testosterone...
Increased plasma and pituitary prolactin concentrations in adult male rats with selective elevation of FSH levels may be explained by reduced testosterone and increased estradiol production
Increased plasma pituitary prolactin concentrations adult male rats
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2009/2/23
The roles of testosterone and estradiol in regulating prolactin concentrations were studied in acutely castrated adult male rats receiving subcutaneous Silastic implants of the sex steroids. Testost...
In Vivo and In Vitro Investigation of the Extrapituitary Antireproductive Effects of a Potent LHRH Agonist in Immature and Adult Male Rats
LHRH agonist extrapituitary reproductive effects age-dependency hypophysectomy
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2009/2/19
Co-incubation with a potent LHRH agonist, D-Ala6-Des-Gly10-Pro9-NHEt-LHRH (Wy-18,481), did not affect testosterone or progesterone production by adult intact rat testes in vitro. Prior administrat...
Acute immobilization stress disrupts testicular steroidogenesis in adult male rats by inhibiting the activities of 17 alpha-hydroxylase and 17,20-lyase without affecting the binding of LH/hCG receptors
Stress rats testosterone 17a-hydroxylase
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2009/2/12
We have investigated the effect of acute immobilization (3 hours) stress on testicular steroidogenesis in the adult rat. Immobilization did not alter plasma luteizing hormone (LH) levels, but plas...