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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1993-11-9
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pubmed:abstractText |
Results of studies with rodents have shown that animals repeatedly injected with the opioid antagonist, naloxone, acquire a hypoalgesic response to thermal nociceptive stimuli. The present study revealed a similar response in the terrestrial pulmonate snail, Cepaea nemoralis. Snails receiving daily injections of naloxone followed by measurements of thermal nociceptive sensitivity also developed hypoalgesia. Daily brief (30-min) exposures to a weak 60-Hz magnetic field (1.0 gauss or 0.1 mT), which acutely antagonize opioid-mediated nociception and antinociception in a manner comparable to that of naloxone, also led to the expression of a hypoalgesic responses. This suggests that opioid antagonist-induced thermal hypoalgesia may be a basic feature of opioid systems. This naloxone- and magnetic field-induced 'analgesia' is consistent with either a facilitation of aversive thermal conditioning and or antagonism of the excitatory, hyperalgesic effects of low levels of endogenous opioids.
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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 |
Aug
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pubmed:issn |
0006-8993
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
20
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pubmed:volume |
620
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
159-62
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:8402190-Analgesia,
pubmed-meshheading:8402190-Animals,
pubmed-meshheading:8402190-Electric Stimulation,
pubmed-meshheading:8402190-Electromagnetic Fields,
pubmed-meshheading:8402190-Hot Temperature,
pubmed-meshheading:8402190-Naloxone,
pubmed-meshheading:8402190-Nociceptors,
pubmed-meshheading:8402190-Reaction Time,
pubmed-meshheading:8402190-Snails
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pubmed:year |
1993
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pubmed:articleTitle |
Repeated naloxone treatments and exposures to weak 60-Hz magnetic fields have 'analgesic' effects in snails.
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pubmed:affiliation |
Bioelectromagnetics Western and Neuroscience Program, University of Western Ontario, London, Canada.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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