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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
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pubmed:dateCreated |
1997-1-15
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pubmed:abstractText |
We biochemically characterized a new disintegrin, flavostatin, isolated from Trimeresurus flavoviridis venom. Flavostatin inhibited ADP-, collagen-, and thrombin receptor agonist peptide-induced platelet aggregation in human platelet-rich plasma (IC50 range: 59 to 111 nM) and blocked the binding of biotinylated human fibrinogen to purified GPIIb/IIIa with an inhibitory potency 31,000-fold higher than that of Arg-Gly-Asp-Ser (RGDS). Flavostatin strongly inhibited high-shear-stress-induced platelet aggregation in platelet-rich plasma (PRP) with an IC50 value of 188 nM. Fluorescein isothiocyanate (FITC)-conjugated flavostatin saturably bound to unstimulated and ADP-stimulated washed platelets with high affinity (Kd values: 38 and 21 nM, respectively); the corresponding number of binding sites was 86460 and 79192 per platelet. In competition experiments with several glycoprotein IIb/IIIa antagonists, the binding of FITC-conjugated flavostatin to platelets was completely inhibited by ReoPro, triflavin, TP9201, MK383 and GR144053, but not by YM207, YM337 and B6A3.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Crotalid Venoms,
http://linkedlifedata.com/resource/pubmed/chemical/Disintegrins,
http://linkedlifedata.com/resource/pubmed/chemical/Oligopeptides,
http://linkedlifedata.com/resource/pubmed/chemical/Platelet Aggregation Inhibitors,
http://linkedlifedata.com/resource/pubmed/chemical/Platelet Glycoprotein GPIIb-IIIa...,
http://linkedlifedata.com/resource/pubmed/chemical/arginyl-glycyl-aspartyl-serine
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pubmed:status |
MEDLINE
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pubmed:issn |
0300-9084
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
78
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
245-52
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:8874799-Amino Acid Sequence,
pubmed-meshheading:8874799-Animals,
pubmed-meshheading:8874799-Blood Platelets,
pubmed-meshheading:8874799-Crotalid Venoms,
pubmed-meshheading:8874799-Disintegrins,
pubmed-meshheading:8874799-Humans,
pubmed-meshheading:8874799-Molecular Sequence Data,
pubmed-meshheading:8874799-Oligopeptides,
pubmed-meshheading:8874799-Platelet Aggregation Inhibitors,
pubmed-meshheading:8874799-Platelet Glycoprotein GPIIb-IIIa Complex,
pubmed-meshheading:8874799-Protein Binding,
pubmed-meshheading:8874799-Sequence Homology, Amino Acid
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pubmed:year |
1996
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pubmed:articleTitle |
Biochemical characterization of a new disintegrin, flavostatin, isolated from Trimeresurus flavoviridis venom.
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pubmed:affiliation |
Institute for Drug Discovery Research, Yamanouchi Pharmaceutical Co Ltd, Ibaraki, Japan.
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pubmed:publicationType |
Journal Article,
In Vitro
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