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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1990-8-6
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pubmed:abstractText |
R-phenylisopropyl-adenosine, which has an affinity for the adenosine A1 receptor higher than that for the A2 receptor, and N-ethylcarboxamide-adenosine, which has near equal affinity for the A1 and A2 receptors, were injected intrathecally into rats to evaluate differences in antinociceptive effect and motor impairment. Using the tail-immersion test, both compounds had antinociceptive effects. Motor function was evaluated during spontaneous movement in a free space. N-ethylcarboxamide-adenosine rapidly impaired motor function even after low intrathecal doses. R-phenylisopropyl-adenosine also induced motor impairment, but only after high intrathecal doses, and onset was much slower. These results suggest that the receptor selectivity of R-phenylisopropyl-adenosine is diminished at higher doses and that the motor impairment is an A2-receptor-mediated effect. A selective A1 receptor agonist, e.g., R-phenylisopropyl-adenosine, which produces a good antinociceptive effect without motor impairment, is more promising as a drug of possible use for the future treatment of clinical pain.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
AIM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Adenosine,
http://linkedlifedata.com/resource/pubmed/chemical/Adenosine-5'-(N-ethylcarboxamide),
http://linkedlifedata.com/resource/pubmed/chemical/Analgesics,
http://linkedlifedata.com/resource/pubmed/chemical/Phenylisopropyladenosine,
http://linkedlifedata.com/resource/pubmed/chemical/Receptors, Purinergic,
http://linkedlifedata.com/resource/pubmed/chemical/Vasodilator Agents
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pubmed:status |
MEDLINE
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pubmed:month |
Jul
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pubmed:issn |
0003-2999
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
71
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
60-4
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:2363530-Adenosine,
pubmed-meshheading:2363530-Adenosine-5'-(N-ethylcarboxamide),
pubmed-meshheading:2363530-Analgesics,
pubmed-meshheading:2363530-Animals,
pubmed-meshheading:2363530-Dose-Response Relationship, Drug,
pubmed-meshheading:2363530-Injections, Spinal,
pubmed-meshheading:2363530-Male,
pubmed-meshheading:2363530-Motor Activity,
pubmed-meshheading:2363530-Phenylisopropyladenosine,
pubmed-meshheading:2363530-Rats,
pubmed-meshheading:2363530-Rats, Inbred Strains,
pubmed-meshheading:2363530-Receptors, Purinergic,
pubmed-meshheading:2363530-Vasodilator Agents
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pubmed:year |
1990
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pubmed:articleTitle |
Effects of intrathecal injection of the adenosine receptor agonists R-phenylisopropyl-adenosine and N-ethylcarboxamide-adenosine on nociception and motor function in the rat.
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pubmed:affiliation |
Department of Anesthesiology, University Hospital, Uppsala, Sweden.
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pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, Non-U.S. Gov't
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