Linked Life Data

8937420

Source:http://linkedlifedata.com/resource/pubmed/id/8937420

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8
pubmed:dateCreated
1997-1-2
pubmed:abstractText
A study on the kinetics of human thrombin inhibition by two novel synthetic peptides (Hirunorm IV and Hirunorm V) and a comparison with recombinant hirudin and a commonly used thrombin inhibitor, Hirulog-1, are reported. The dissociation constants for Hirunorm IV and Hirunorm V were determined by varying the concentration of inhibitors at fixed concentrations of the chromogenic substrate Chromozym-TH (N-tosylglycyl-L-prolyl-L-arginine 4-nitroanilide acetate). Both inhibitors behaved as reversible tight-binding inhibitors of amidolytic thrombin activity. The apparent dissociation constants determined showed a linear dependence on the concentration of substrate; this finding, which indicates that the inhibition was competitive, made possible the estimation of the dissociation constants (KI) for Hirunorm IV and Hirunorm V, which were 0.134 +/- 0.014 nM and 0.245 +/- 0.016 nM, respectively. Similar dissociation constants were also obtained for the two inhibitors when thrombin activity was measured with fibrinogen in the clotting assay. When tested for resistance to thrombin proteolytic activity, both inhibitors were inviolate to cleavage by thrombin. The data obtained demonstrate that both Hirunorm IV and Hirunorm V are potent and stable inhibitors of human thrombin activity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0006-2952
pubmed:author
pubmed:issnType
Print
pubmed:day
25
pubmed:volume
52
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1141-6
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Kinetics of human thrombin inhibition by two novel peptide inhibitors (Hirunorm IV and Hirunorm V).
pubmed:affiliation
Dipartimento di Fisiologia e Biochimica, Università dt Pisa, Italy.
pubmed:publicationType
Journal Article, Comparative Study, In Vitro