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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1977-2-16
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pubmed:abstractText |
An extract from porcine pituitaries containing peptides with opiate-like activity (endorphins) was investigated for possible tolerance/dependence liability in rats. Repeated intraventricular administration of endorphins induced a degree of tolerance similar to that induced by normorphine. Rats made tolerant to morphine by repeated pellet implantation proved cross-tolerant to the pituitary extract as well as to synthetic methionine-enkephalin. Naloxone given to rats, repeatedly pretreated with endorphins, precipitated a withdrawal syndrome strongly resembling that induced in rats treated with normorphine. Withdrawal precipitated in morphine-dependent rats was suppressed by intraventricularly applied endorphins. The results suggest that identical sites and mechanisms are involved in the development of tolerance/dependence induced by opiates and pituitary endorphins.
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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 |
Sep
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pubmed:issn |
0028-1298
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
294
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
297-300
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pubmed:dateRevised |
2010-3-12
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pubmed:meshHeading |
pubmed-meshheading:1034220-Animals,
pubmed-meshheading:1034220-Drug Interactions,
pubmed-meshheading:1034220-Drug Tolerance,
pubmed-meshheading:1034220-Humans,
pubmed-meshheading:1034220-Morphine Dependence,
pubmed-meshheading:1034220-Naloxone,
pubmed-meshheading:1034220-Narcotics,
pubmed-meshheading:1034220-Peptides,
pubmed-meshheading:1034220-Pituitary Gland,
pubmed-meshheading:1034220-Rats,
pubmed-meshheading:1034220-Substance Withdrawal Syndrome,
pubmed-meshheading:1034220-Substance-Related Disorders,
pubmed-meshheading:1034220-Tissue Extracts
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pubmed:year |
1976
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pubmed:articleTitle |
Tolerance and dependence induced by morphine-like pituitary peptides in rats.
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pubmed:publicationType |
Journal Article
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