BACKGROUND AND PURPOSE A common G-to-T point mutation (Val 34 Leu) in exon 2 of the alpha-subunit of the factor XIII is strongly negatively associated with the development of myocardial infarction. This result suggests that factor XIII Val 34 Leu is interfering with the formation of cross-linked fibrin. The role of factor XIII Val 34 Leu in the pathogenesis of cerebral infarction and primary in...

The present study examines the effects of water soluble extracts of gas-phase cigarette smoke on intracellular transglutaminase activities of intact, murine, bone marrow-derived macrophages maintained in culture. Western blotting of cell lysates utilizing noncross-reactive antisera indicate that mouse bone marrow-derived macrophages contain both tissue-type transglutaminase and factor XIII-asso...

coagulaon factor xiii gene, protein structure and funcon coagulaon factor xiii (fxiii) is a tetrameric (fxiii- a2b2) pro-transglutaminase enzyme with an essenal role in the final stage of coagulaon cascade by cross linking the fibrin monomers and stabilizing the fibrin clot. congenital fxiii deficiency is a rare bleeding disorder, with an autosomal recessive trait inheritance, and a freque...

The balance between fibrinolytic activity and coagulation mechanisms seems to play an important role in the rebleeding of a subarachnoid hemorrhage (SAH) due to aneurysmatic rupture. In the present paper we describe our findings in a group of patients (n 10) with SAH. The plasmatic levels of fibrinogen and their degradation products (FDP), APTT, prothrombin activity and factor XIII were determi...

Factor XIII is a blood protransglutaminase that is distributed in plasma and platelets. The extracellular and intracellular zymogenic forms differ in that the plasma zymogen contains A and B subunits, while the platelet zymogen has A subunits only. Both zymogens form the same enzyme. Erythrocytes, in contrast, contain a tissue transglutaminase that is distinct from Factor XIII. In this study ot...

A 57-year-old man presented with a spontaneous upper-extremity hematoma and compartment syndrome. The patient experienced excessive bleeding following evacuation of the hematoma, and the results of routine coagulation studies were normal. Factor XIII activity was undetectable using a photometric assay, and the presence of an inhibitor was detected with mixing studies. Bleeding was controlled wi...

Factor XIII (F XIII) is an essential parameter for final clot stability. The purpose of this study was to determine the impact of the addition of factor (F)XIII on clot stability as assessed by Rotation Thromboelastometry (ROTEM®). In 90 intensive care patients ROTEM® measurements were performed after in vitro addition of F XIII 0.32 IU, 0.63 IU, 1.25 IU and compared to diluent controls (DC; aq...

Fibrin polymers (des A,B fibrinogen) reduced the concentration of a-thrombin required for 50% activation of plasma factor XIII (a2b2 tetramer) by approximately 1 00-fold. In the presence of fibrin, the amount of ‘y-thrombin required for activation was not affected. Catalytically inactive i-Pr2Pand D-Phe-PrO-Arg-CH2-a-thrOmbin were found to inhibit over 95% of the activation by a-thrombin in the...