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

AbstractInflammation 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/kg.day) 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.
AuthorsL Tangbanluekal, C L Robinette (Affiliation: Department of Anatomy, Physiological Sciences, and Radiology, North Carolina State University College of Veterinary Medicine, Raleigh 27606.)
JournalEndocrinology (Endocrinology) Vol. 132 Issue 6 Pg. 2407-16 (Jun 1993) ISSN: 0013-7227 UNITED STATES
PMID8504745 (Publication Type: Journal Article, Research Support, U.S. Gov't, P.H.S.)
Chemical References
  • Estradiol
  • Dihydrotestosterone
  • Prolactin
  • DNA
Topics
  • Animals
  • DNA (metabolism)
  • Dihydrotestosterone (metabolism)
  • Estradiol
  • Male
  • Organ Size
  • Osmolar Concentration
  • Pituitary Gland (pathology)
  • Prolactin (blood, physiology)
  • Prostate (metabolism)
  • Prostatitis (chemically induced, pathology)
  • Rats
  • Rats, Wistar