Streptokinase is shown to react with either human plasmin or human plasminogen to form an equimolar product which migrates in starch gel electrophoresis at pH 6.0 or 8.0 with a migration rate intermediate between the rates of migration of the two proteins. When streptokinase was present in molar excess in the reaction mixtures, the uncombined streptokinase displayed a migration rate at pH 6.0 (...

The risk of bleeding associated with intracoronary infusion of streptokinase in acute myocardial infarction was determined in a randomised controlled trial containing 302 patients under the age of 70. Intracoronary streptokinase infusion was given to 152 patients and 150 patients were treated conventionally. Bleeding was seen in 24 (16%) patients in the streptokinase group and in two of the con...

Streptokinase, an extracellular protein produced by Streptococci, is capable of activating the human fibrinolytic zymogen plasminogen. The rate of amidolytic activity of the plasminogen-streptokinase complex is greatly diminished by micromolar concentrations of ATP and heparin oligosaccharides. In addition, the plasminogen activator activity of the plasminogen-streptokinase complex is also inhi...

BACKGROUND AND PURPOSE Hemorrhagic transformation (HT) is the most critical complication of thrombolytics in clinical trials in acute stroke. The aim of this study was to determine the rates and the predictors of HT in the Multicenter Acute Stroke Trial-Europe (MAST-E) study. METHODS We performed a post hoc analysis of MAST-E data designed to assess the safety and efficacy of streptokinase ad...

Group A streptococcal infections are sometimes followed by the inflammatory kidney disease acute post-streptococcal glomerulonephritis (APSGN). To test the importance of streptokinase in the pathogenesis of this disease, isogenic strains of the nephritis isolate NZ131, differing only in the ability to produce streptokinase of the nephritis-associated ska1 genotype, were used for infection in a ...

Acute pharyngitis/tonsillitis, which is characterized by inflammation of the posterior pharynx and tonsils, is a common disease. Several viruses and bacteria can cause acute pharyngitis; however, Streptococcus pyogenes (also known as Lancefield group A β-hemolytic streptococci) is the only agent that requires an etiologic diagnosis and specific treatment. S. pyogenes is of major clinical import...

Reactions between purified plasminogen and streptokinase, labelled with (131)I and (125)I respectively, were investigated by polyacrylamide-gel discontinuous electrophoresis. A molecular complex consisting of both (131)I-labelled plasminogen and (125)I-labelled streptokinase migrated between plasminogen and streptokinase. This complex contained bovine plasminogen activator activity. The relativ...

The killer cell characteristics of ƒÁƒÂTCR-bearing T cells induced from human tonsil by streptococcus pyogenes stimulation were examined. Immunohistologic staining of tonsil showed that ƒÁƒÂ TCR-bearing T cells were mainly located in the interfollicular area connected with stratified squamous epithelium. Streptococcus pyogenes could induce the proliferation of ƒÁƒÂTCRbearing T cells from tonsil...