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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
17
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pubmed:dateCreated |
1984-6-27
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pubmed:abstractText |
C57 BL/6J (C57) mice display a particular pattern of responses following morphine administration, such as a rapid development of tolerance to the pharmacological action of the opiate and an increase in locomotor activity after a single injection of the drug. We have measured met-enkephalin content and the responsiveness of different opiate receptors after repeated administration of morphine and naloxone. Prolonged morphine administration changes neither met-enkephalin levels, nor the density of the opiate receptors in mice brain. In contrast repeated administration of the opiate antagonist naloxone, produced a marked increase in the number of 3H- DHM and 3H- DADLE binding sites in striatum and brainstem without modifying met-enkephalin concentrations. Behavioral studies have indicated that the morphine-induced increase in locomotor activity is enhanced in naloxone pretreated mice, thus suggesting a possible correlation between the behavioral response to morphine in C57 mice and the higher number of opiate receptors in the striatum.
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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 |
Apr
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pubmed:issn |
0024-3205
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
23
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pubmed:volume |
34
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pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
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pubmed:pagination |
1669-78
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:6328141-Animals,
pubmed-meshheading:6328141-Brain,
pubmed-meshheading:6328141-Brain Stem,
pubmed-meshheading:6328141-Cerebral Cortex,
pubmed-meshheading:6328141-Corpus Striatum,
pubmed-meshheading:6328141-Enkephalin, Methionine,
pubmed-meshheading:6328141-Kinetics,
pubmed-meshheading:6328141-Locomotion,
pubmed-meshheading:6328141-Male,
pubmed-meshheading:6328141-Mice,
pubmed-meshheading:6328141-Mice, Inbred C57BL,
pubmed-meshheading:6328141-Morphine,
pubmed-meshheading:6328141-Naloxone,
pubmed-meshheading:6328141-Radioligand Assay,
pubmed-meshheading:6328141-Receptors, Opioid
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pubmed:year |
1984
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pubmed:articleTitle |
Modulation of opioid system in C57 mice after repeated treatment with morphine and naloxone: biochemical and behavioral correlates.
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pubmed:publicationType |
Journal Article,
Comparative Study
|