Ons trigger an activation of the contact system more potently than strains isolated from noninvasive infections. The present study gives new insights into the mechanisms by which S. pyogenes triggers the human contact system and stresses the function of soluble and surface located plasmin exploited as a group A streptococcal virulence factor through the action of streptokinase. treptococcus pyogen

Rianal cellulitisPerianal cellulitis should be promptly recognized in neutropenic patients, as they are associated with significant morbidity and mortality [52]. Necrotizing cellulitis and cellulitis-induced septic shock require surgery. However, surgery is sometimes a complex decision and some authors suggest that, in the absence of septic shock, the management depends on the presence of fluctuat

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Streptococcal plasminogen activator, triggers the activation of the human contact system. Activation of contact system factors at the surface of the Streptococcus pyogenes serotype M49 is dependent on streptokinase and plasminogen. Our results also show that secreted streptokinase is an efficient contact system activator, independent from a contact surface. This results in the processing of high-m

Ersus host disease, or other abdominal syndromes including cholecystitis, cholangitis, appendicitis need to be ruled out. The management of neutropenic enterocolitis has evolved over the years as clinical experience has grown. Recent studies have reported the success of conservative treatment in most patients. Surgical intervention is now reserved for selected cases of neutropenic enterocolitis ba

Ersus host disease, or other abdominal syndromes including cholecystitis, cholangitis, appendicitis need to be ruled out. The management of neutropenic enterocolitis has evolved over the years as clinical experience has grown. Recent studies have reported the success of conservative treatment in most patients. Surgical intervention is now reserved for selected cases of neutropenic enterocolitis ba

Has been described for a number of bacterial species (for a review, see reference 7). In the case of S. pyogenes, the secreted streptococcal cysteine protease SpeB was found to cleave HK directly (8). In addition, the surface-bound M protein, one of the classical virulence determinants of GAS, has been demonstrated to bind HK, followed by bradykinin generation (9, 10). Binding and assembly of cont

Has been described for a number of bacterial species (for a review, see reference 7). In the case of S. pyogenes, the secreted streptococcal cysteine protease SpeB was found to cleave HK directly (8). In addition, the surface-bound M protein, one of the classical virulence determinants of GAS, has been demonstrated to bind HK, followed by bradykinin generation (9, 10). Binding and assembly of cont