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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
|
pubmed:dateCreated |
1986-12-1
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pubmed:abstractText |
L-Tryptophan (L-TP) has been used in migraine and other pain conditions. The mechanism underlying the analgesic effect is still partly undefined. In this study the effects of subchronic administration of L-5-hydroxytryptophan (L-5HTP) (with and without carbidopa) on plasma beta-endorphin (beta-EP) levels and subjective pain threshold and tolerance were investigated in seven healthy volunteers. To measure also an objective indicator of pain, the nociceptive flexion reflex threshold was studied. L-5HTP treatment with and without carbidopa administration increased beta-EP levels significantly (p less than 0.05). L-5HTP plus carbidopa induced an increase in beta-EP significantly (p less than 0.05) greater than that induced by L-5HTP alone. Neither the subjective pain threshold and tolerance nor the RIII threshold was modified by either treatment. Our data seem to point to the existence of a complex linkage between plasma opioid levels and pain perception.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Sep
|
pubmed:issn |
0333-1024
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
6
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pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
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pubmed:pagination |
175-9
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pubmed:dateRevised |
2008-2-11
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pubmed:meshHeading |
pubmed-meshheading:2945645-Adult,
pubmed-meshheading:2945645-Carbidopa,
pubmed-meshheading:2945645-Drug Therapy, Combination,
pubmed-meshheading:2945645-Endorphins,
pubmed-meshheading:2945645-Humans,
pubmed-meshheading:2945645-Migraine Disorders,
pubmed-meshheading:2945645-Pain,
pubmed-meshheading:2945645-Sensory Thresholds,
pubmed-meshheading:2945645-Tryptophan,
pubmed-meshheading:2945645-beta-Endorphin
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pubmed:year |
1986
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pubmed:articleTitle |
Effects of L-5HTP with and without carbidopa on plasma beta-endorphin and pain perception: possible implications in migraine prophylaxis.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|