Parallel Procoagulant and Anticoagulant Pathways for High Molecular Weight Kininogen Coagulant Function

Autor: Shore Jd, Roberta Sheffer, Steven T. Olson
Rok vydání: 1992
Předmět:
Zdroj: Recent Progress on Kinins ISBN: 9783034873239
DOI: 10.1007/978-3-0348-7321-5_32
Popis: High molecular weight kininogen (HK) or its procoagulant light-chain but not the heavy chain potentiated the heparin enhancement of antithrombin III inactivation of plasma kallikrein and factor XIa from 10-50-fold to approximately 1000-fold at I 0.15, pH 7.4, 25 degrees C. This potentiation resulted in antithrombin becoming a predominant inhibitor of kallikrein and factor XIa in heparinized normal but not HK-deficient plasmas. The heparin chain-length and salt dependence of this potentiation suggested an anticoagulant action of HK analogous to its procoagulant action.
Databáze: OpenAIRE