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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1983-4-7
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pubmed:abstractText |
Echis colorata bites cause impairment of platelet aggregation and hemostatic disorders. The mechanism by which the snake venom inhibits platelet aggregation was studied. Upon fractionation, aggregation impairment activity and L-amino acid oxidase activity were similarly separated from the crude venom, unlike other venom enzymes. Preparations of L-amino acid oxidase from E. colorata and from Crotalus adamanteus replaced effectively the crude E. colorata venom in impairment of platelet aggregation. Furthermore, different treatments known to inhibit L-amino acid oxidase reduced in parallel the oxidase activity and the impairment potency of both the venom and the enzyme preparation. H2O2 mimicked characteristically the impairment effects of L-amino acid oxidase and the venom. Catalase completely abolished the impairment effects of the enzyme and the venom. It is concluded that hydrogen peroxide formed by the venom L-amino acid oxidase plays a role in affecting platelet aggregation and thus could contribute to the extended bleeding typical to persons bitten by E. colorata.
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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 |
Dec
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pubmed:issn |
0340-6245
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
27
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pubmed:volume |
48
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
277-82
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:7164017-Amino Acid Oxidoreductases,
pubmed-meshheading:7164017-Enzyme Activation,
pubmed-meshheading:7164017-Humans,
pubmed-meshheading:7164017-Hydrogen Peroxide,
pubmed-meshheading:7164017-L-Amino Acid Oxidase,
pubmed-meshheading:7164017-Platelet Aggregation,
pubmed-meshheading:7164017-Viper Venoms
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pubmed:year |
1982
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pubmed:articleTitle |
Impairment of platelet aggregation by Echis colorata venom mediated by L-amino acid oxidase or H2O2.
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pubmed:publicationType |
Journal Article
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