RGD Reference Report - Effects of gonadal steroid hormones on GIRK2 gene transcription in the rat central nervous system. - Rat Genome Database

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Effects of gonadal steroid hormones on GIRK2 gene transcription in the rat central nervous system.

Authors: Ahangar, N  Kazemi, B  Jorjani, M 
Citation: Ahangar N, etal., Neurosci Lett. 2008 Feb 6;431(3):201-5. Epub 2007 Dec 3.
RGD ID: 6483056
Pubmed: PMID:18178009   (View Abstract at PubMed)
DOI: DOI:10.1016/j.neulet.2007.11.034   (Journal Full-text)

GIRK(2) is the primary post-synaptic effector of opioids in the CNS that may contribute to the sex differences or age dependency in opioid analgesia. In the present study, we investigated the differential developmental and hormonal regulation of GIRK(2) gene transcription in rats. Male and female Wistar rats were divided into infant or adult intact, gonadectomized, sham and gonadectomy+testosterone groups. Semi-quantitative RT-PCR was used to determine the levels of GIRK(2) gene expression in spinal cord and brain. Our results showed that in male spinal cord/brain, the gene transcription of the infant group did not differ from expression levels of this gene in the gonadectomized or adult intact groups. Castration of males significantly decreased the expression levels of the GIRK(2) gene. Testosterone replacement in castrated rats did not raise GIRK(2) gene expression completely to the level of shams. In females however, a greater expression of GIRK(2) gene expression was found in adult intact or gonadectomized rats than in the infant groups. Ovariectomy failed to alter GIRK(2) mRNA levels significantly. No significant sex differences were observed in GIRK(2) gene transcription between intact, sham and infant groups, but gonadectomy produced sex differences in GIRK(2) gene transcription. The results strongly demonstrate the differential developmental and hormonal regulation of GIRK(2) in the rat CNS.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
cellular response to morphine  IEP 6483056 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Kcnj6  (potassium inwardly-rectifying channel, subfamily J, member 6)


Additional Information