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Endocrinology. 1993 Jun;132(6):2407-16.

Prolactin mediates estradiol-induced inflammation in the lateral prostate of Wistar rats.

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Department of Anatomy, Physiological Sciences, and Radiology, North Carolina State University College of Veterinary Medicine, Raleigh 27606.


Inflammation was induced in the lateral prostate of castrated Wistar rats by exposure to a sc implant of estradiol-filled Silastic tubing, followed by the addition of a dihydrotestosterone implant to restore prostatic wet weight. The presence of inflammation was correlated with increased serum PRL, elevated pituitary weight, and a greater than 2-fold increase in the lateral prostate DNA concentration. The administration of bromocriptine (4 mg/ to these animals was effective in suppressing pituitary weight and hyperprolactinemia and mitigated the lateral prostate inflammatory response. Inflammation was restored in the bromocriptine-treated hormone-implanted rats by administering exogenous ovine PRL at a dose of 2 mg/kg twice a day. The results indicate that estradiol-induced inflammation in the rat lateral prostate is mediated at least in part by the release of PRL from the pituitary.

[Indexed for MEDLINE]

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