Effect of an antagonistic analog of LH-RH on haloperidol-induced hyperprolactinemia in female rats

L. Debeljuk, I. Torres-Aleman, A. V. Schally

Research output: Contribution to journalArticle

6 Scopus citations


The effects of prolonged treatment with the antagonistic analog of LH-RH (N-Ac-D-p-Cl-Phe1,2, D-Trp3,D-Arg6,D-Ala10) LH-RH (ORG 30276) on the hyperprolactinemia induced by haloperidol were investigated in intact or ovariectomized female rats. Treatment with ORG 30276 for 20 days significantly reduced prolactin levels elevated by daily injections of haloperidol in intact as well as in ovariectomized rats. Administration of ORG 30276 also significantly decreased serum LH levels in both types of rats. It is concluded that the LH-RH antagonist ORG 30276 is able to counteract the hyperprolactinemic effect of haloperidol. This effect might be due to a blockade of the action of endogenous LH-RH on the gonadotrophs, which results in a suppressing of the paracrine action of these cells on the lactotroph.

Original languageEnglish (US)
Pages (from-to)463-465
Number of pages3
Issue number3
StatePublished - Jan 1 1985
Externally publishedYes



  • LH, Pituitary
  • LH, Prolactin

ASJC Scopus subject areas

  • Biochemistry
  • Endocrinology
  • Physiology
  • Cellular and Molecular Neuroscience

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