Linked Life Data

1323800

Source:http://linkedlifedata.com/resource/pubmed/id/1323800

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1992-9-15
pubmed:abstractText
The facilitation of sexual receptivity by oxytocin (OT) in female rats is related to the regulation of oxytocin receptors (OTR) by ovarian steroids in the ventromedial nuclei (VMN) of the hypothalamus. In a previous study, we have shown that estradiol benzoate (EB) causes a twofold increase in OTR binding in the VMN. Progesterone (P) then modulates levels of the estrogen-induced OTR and increases the area occupied by the receptors by acting on the neuronal membrane. In the present study, we compared the effects of EB and P on OTR binding between males and females. In both sexes, EB increased the density of OTR and the area covered by the receptors at the level of the medial and caudal VMN. In estrogen-primed females, P further increased OTR levels in the medial VMN and the area covered by OTR at the level of the caudal VMN. By contrast, P did not modulate OTR binding in estrogen-primed males. Thus, the behavioral insensitivity of male rats to ovarian hormones, in particular to P, may be related to sex differences affecting the modulation of OTR binding.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0028-3835
pubmed:author
pubmed:issnType
Print
pubmed:volume
55
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
269-75
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Sex differences in the regulation of oxytocin receptors by ovarian steroids in the ventromedial hypothalamus of the rat.
pubmed:affiliation
Laboratory of Neuroendocrinology, Rockefeller University, New York, N.Y. 10021.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't