Linked Life Data

16546220

Source:http://linkedlifedata.com/resource/pubmed/id/16546220

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2006-6-19
pubmed:abstractText
There are many studies of the mechanisms of antidepressants; however, most of these studies were conducted on the hippocampus or frontal cortex. In the present study, we hypothesized that the nucleus accumbens and caudate/putamen might be major targets for antidepressant effects. Thus, we focused on G(olf) protein, a stimulant alpha-subunit of G protein that is coupled with the dopamine D1 receptor and specifically expressed in the striatum (nucleus accumbens, caudate/putamen and olfactory tubercle) in the rat brain. We examined the effects of chronic administration of imipramine, fluvoxamine, maprotiline and, as a negative control, cocaine on the level of G(olf) protein in the rat striatum. We also examined the effect of olfactory bulbectomy. Chronic imipramine treatment (10 mg/kg for 2 or 4 weeks) significantly increased the level of G(olf) in the striatum (by 17% or 18%, respectively), although this increase was not apparent after only 1 week of treatment. The time course of these changes corresponded well to that of the clinical efficacy of imipramine. Chronic fluvoxamine and maprotiline treatment (20 mg/kg for 2 weeks) also significantly increased the level of G(olf) (by 9% and 25%, respectively), but cocaine did not alter it significantly. Bulbectomy decreased the G(olf) protein level by 9%. The increases in G(olf) protein after chronic administration of these three different classes of antidepressants and the decrease after bulbectomy suggest that G(olf) protein may play an important role in the antidepressant effect.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0024-3205
pubmed:author
pubmed:issnType
Print
pubmed:day
27
pubmed:volume
79
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
462-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
G(olf) protein levels in rat striatum are increased by chronic antidepressant administration and decreased by olfactory bulbectomy.
pubmed:affiliation
Department of Neuropsychiatry, Okayama Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Okayama 700-8558, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't