Role of prolactin(prl) in regulation of the nocturnal surge of testosterone (t) in the bonnet monkey (macaca radiata)

Rao, A Jagannadha and Moudgal, NR (1982) Role of prolactin(prl) in regulation of the nocturnal surge of testosterone (t) in the bonnet monkey (macaca radiata). In: Journal of Steroid Biochemistry, 17 (3). R83-R83.

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Abstract

Earlier studies from this lebordory have shown thet adult male bonnet monkeys exhibit nychthemrel rhythmicity la the secretion of serum 'T' the levele reehlng peek by 22OOhr. Of the gonedotropine cnelyeed only serum PRL showed a concommitent increme with T(Biol.of Reprod. 24,814, 1981). In the present study mMinietretion of l rgobromocryptin (EBC) either by i.v.route(2mg)or by naeel l pr~(100~)reeulted in blockade of nocturnal increase of both PRL end T(Controle T-18.6ng/ml: PRL 130=29ng/ml: EBC treated T-2.2&1.2ng/ml; PRL n.d.to 15nng/ml). Adminietretion of N oPRL could not reverse the effect of EBC. Although, increaeed serum PRL induced by injection of Chlorprommine did not result in increase in serum 'T' during the dey time, the nocturnel 'T' surge could not be obeeerved. EBC treeted monkeys, however, showed normal testosterone response to exogenous hCG. These IeSUlte a0 SwgeStive of high levels of PRL me&in6 reeponeiveneee of testes to tonic levels of serum IX. (Aided by grant8 from ICMR, Kew Delhi, WHO, Geneva eld FPF, India).

Item Type:	Journal Article
Publication:	Journal of Steroid Biochemistry
Publisher:	Elsevier Science
Additional Information:	Copyright of this article is belongs to Elsevier Publisher.
Department/Centre:	Division of Biological Sciences > Biochemistry
Date Deposited:	30 Dec 2009 11:17
Last Modified:	19 Sep 2010 05:41
URI:	http://eprints.iisc.ac.in/id/eprint/22412

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