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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1-2
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pubmed:dateCreated |
1988-3-10
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pubmed:abstractText |
The time course of recovery of [3H]spiperone binding in the rat striatum after administration of the irreversible antagonist N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline (EEDQ) was studied in chronically haloperidol-treated rats (0.5 mg/kg, i.p., twice a day for two weeks). Chronic neuroleptic treatment significantly enhanced the [3H]spiperone Bmax value. EEDQ (6.0 mg/kg, i.p.) produced a similar profound decrease of [3H]spiperone binding site density in both saline- and haloperidol-treated rats. However, the receptor degradation rate constant in the haloperidol-treated animals (k = 0.0051 h-1) and the receptor production rate (r = 1.6 fmol/mg prot/h) were lower than in the saline-treated rats (k = 0.0074 h-1; r = 1.8 fmol/mg prot/h). These results are different from what is found in 6-OH-dopamine lesioned rats. D2-receptor recovery after EEDQ administration is enhanced in chronically (4-5 weeks) denervated striatum (Brain Research, 329 (1985) 225-231) while the degradation rate constant is unchanged. Thus, the present results indicate that chronic haloperidol treatment reduces both the degradation and production rates of striatal D2-receptors.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
0006-8993
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
1
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pubmed:volume |
435
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
147-52
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:2962698-Animals,
pubmed-meshheading:2962698-Corpus Striatum,
pubmed-meshheading:2962698-Haloperidol,
pubmed-meshheading:2962698-Kinetics,
pubmed-meshheading:2962698-Male,
pubmed-meshheading:2962698-Rats,
pubmed-meshheading:2962698-Rats, Inbred Strains,
pubmed-meshheading:2962698-Receptors, Dopamine,
pubmed-meshheading:2962698-Receptors, Dopamine D2,
pubmed-meshheading:2962698-Spiperone
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pubmed:year |
1987
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pubmed:articleTitle |
Chronic haloperidol affects striatal D2-dopamine receptor reappearance after irreversible receptor blockade.
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pubmed:affiliation |
Department of Human Physiology, University of Modena, Italy.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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