Effect of modulating endogenous prolactin secretion on testosterone production in the adult male bonnet monkey (Macaca radiata)

Jagannadha Rao, A. ; Sheela Rani, C. S. ; Ravindranath, N. ; Moudgal, N. R. (1990) Effect of modulating endogenous prolactin secretion on testosterone production in the adult male bonnet monkey (Macaca radiata) Andrologia, 22 (3). pp. 251-259. ISSN 0303-4569

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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1439-...

Related URL: http://dx.doi.org/10.1111/j.1439-0272.1990.tb01975.x

Abstract

Adult male bonnet monkeys maintained under regulated light: dark conditions exhibit a nycthemeral surge of testosterone. The present study attempts to determine the effect of administration of drugs that modulate prolactin levels like ergobromocriptine (EBC) and chlorpromazine (CPZ) on testosterone production. The injection of EBC, a known inhibitor of prolactin secretion, could abolish nocturnal testosterone surge irrespective of the drug being given at 8.00 or 17.00 h. Testosterone surge could likewise be inhibited by treating animals with CPZ, a potent stimulator of prolactin secretion. This suggests that alteration in endogenous prolactin level from the normal effects nycthemeral surges of testosterone. The in vivo responsiveness of the testes of monkeys injected either CPZ oder EBC to exogenous LH or LHRH stimulation was tested. While LH could completely override the CPZ induced inhibition in testosterone production it could only partially reverse the EBC effect.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons, Inc.
Keywords:Prolactin; Estisfunction; Testosterone; Chlorpromazine; Prolactin; Ergobromocriptine; Prolactin Testicular Function; Prolactin
ID Code:21706
Deposited On:22 Nov 2010 11:00
Last Modified:12 Jul 2012 09:04

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