title: [Development and optimization of the methods for determining activity of plasminogen activator inhibitor-1 in plasma].
abstract: The activity and content of plasminogen activator inhibitor-1 (PAI-1) are important indicators of pathological processes, because its content in plasma increases at acute myocardium infarction, tumor, diabetes mellitus, etc. The present work is dedicated to the development and optimization of the methods of PAI-1 activity definition, which can be used in clinical practice. We have proposed the modification of the method COATEST PAI with the usage of chromogenic substrate S2251. According to our modification, the cyanogen bromide fragments of human fibrinogen have been changed into bovine desAB-fibrin. We have also developed the method with the usage of fibrin films. In this method fibrin is used as a stimulator of activation reaction and as a substrate at the same time. Using fibrin, the native substrate of plasmin, we provide high specificity of the reaction and exclude the cross-reaction with other plasma enzymes.
authors: Ia M
authors: IaM
authors: Roka-Moĭia
authors: D D
authors: DD
authors: Zhernosiekov
authors: A S
authors: AS
authors: Kondratiuk
authors: T V
authors: TV
authors: Hrynenko
mesh_terms: D000818:Animals; D001681:Biological Assay; D002417:Cattle; D003488:Cyanogen Bromide / Q000737:chemistry; D005337:Fibrin / Q000737:chemistry; D005340:Fibrinogen / Q000737:chemistry; D005341:Fibrinolysin / Q000737:chemistry; D006801:Humans; D007700:Kinetics; D010958:Plasminogen / Q000737:chemistry; D017395:Plasminogen Activator Inhibitor 1 / Q000097:blood*; D010959:Tissue Plasminogen Activator / Q000737:chemistry
chemical_list: D017395:Plasminogen Activator Inhibitor 1; D005337:Fibrin; D005340:Fibrinogen; D010958:Plasminogen; D010959:Tissue Plasminogen Activator; D005341:Fibrinolysin; D003488:Cyanogen Bromide