Linked Life Data

8708546

Source:http://linkedlifedata.com/resource/pubmed/id/8708546

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1996-9-12
pubmed:abstractText
Prolactin receptor (PRL-R) mRNA expression levels in the female rat brain (cerebrum) during pup contact stimulation were determined by the reverse transcription-PCR method. The high expression levels of long form PRL-R mRNA found in the brain of lactating rats were markedly reduced by removal of pups, and long form PRL-R mRNA levels were recovered by resumption of pup contact. Interestingly, pup contact stimuli of nulliparous virgin rats also markedly induced long form but not short form PRL-R mRNA expression in the brain in 1.3 days, together with the expression of maternal behaviour. In ovariectomized (OVX) or hypophysectomized (HYPOX) virgin rats, or in OVX plus HYPOX virgin rats, however, brain long form PRL-R mRNA was not significantly induced by pup contact stimuli for as long as 7 days, while maternal behaviour was fully expressed in these rats after 7 days of pup contact. The in situ hybridization experiments revealed that the long form PRL-R mRNA induced in virgin rats in contact with pups or in lactating rats was localized in the epithelial cells of the choroid plexus. No significant increase in mRNA was detected in other regions of the brain, such as the hypothalamus or cortex, in these maternal female rats. These results suggest that pup contact induces the expression of long form PRL-R mRNA in the choroid plexus of the brain in the presence of female sex steroid and pituitary hormones for the rapid expression of maternal behaviour. Our studies also suggested that maternal behaviour can be expressed in OVX or HYPOX rats after exposure to pups for 7 days without any significant increase in brain PRL-R mRNA expression.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0022-0795
pubmed:author
pubmed:issnType
Print
pubmed:volume
149
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
335-40
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Pup contact induces the expression of long form prolactin receptor mRNA in the brain of female rats: effects of ovariectomy and hypophysectomy on receptor gene expression.
pubmed:affiliation
Department of Biochemistry, Mie University Faculty of Medicine, Japan.
pubmed:publicationType
Journal Article, Comparative Study