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Horm Metab Res 1984; 16(10): 535-538
DOI: 10.1055/s-2007-1014843
Clinical

© Georg Thieme Verlag, Stuttgart · New York

Effect of Metergoline on Prolactin, Follicle Stimulating Hormone, Luteinizing Hormone and Thyroid Stimulating Hormone Response to TRH and LHRH in Normal Men and Women

A. Sartani1 , 3 , A. de Pasqua2 , R. Cesati2 , L. Farina2 , A. E. Pontiroli2
  • 1Istituto di Endocrinologia, Università di Milano, Istituto Scientifico San Raffaele, Milano, Italy
  • 2Clinica Medica VIII, Università di Milano, Istituto Scientifico San Raffaele, Milano, Italy
  • 3Farmitalia Carlo Erba, Milano, Italy
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Publication History

1983

1983

Publication Date:
14 March 2008 (online)

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Summary

Metergoline, a prolactin (PRL)-lowering drug with an antiserotoninergic activity, is known to restore menstruations and fertility in hyper-PRL patients even when PRL levels are not normalized. This suggests that metergoline might also affect gonadotropins release. In a double-blind cross-over study in 8 normal males, repeated administration of metergoline enhanced the LH response to LHRH and reduced the PRL response to TRH; for females, three different tests were performed on days 5, 8 and 21 of two different menstrual cycles, each test being preceded by metergoline or by placebo administration. Metergoline always reduced the PRL response to TRH; on the 5th day, metergoline reduced the FSH response to LHRH and on the 21st day enhanced the LH response to LHRH. Basal levels of LH, FSH, T3, T4, Testosterone, 17β-estradiol and progesterone as well as the FSH response to LHRH (in males) and the TSH response to TRH (in both males and females) were not modified by metergoline.

The data suggest that tests with TRH and LHRH can yield different results when performed during metergoline administration and that metergoline, acting through an unknown mechanism, can modify gonadotropins release.

Key-Words:

PRL - FSH - LH - TSH - Metergoline

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