scholarly journals Protein FOG is a moderate inducer of MIG/CXCL9, and group G streptococci are more tolerant than group A streptococci to this chemokine's antibacterial effect

Microbiology ◽  
2007 ◽  
Vol 153 (11) ◽  
pp. 3800-3808 ◽  
Author(s):  
Helena M. Linge ◽  
Inka Sastalla ◽  
D. Patric Nitsche-Schmitz ◽  
Arne Egesten ◽  
Inga-Maria Frick
Keyword(s):  
Antibacterial Effect ◽  
Group A Streptococci ◽  
Group G Streptococci ◽  
Group A

scholarly journals STUDIES ON STREPTOCOCCAL FIBRINOLYSIS

1947 ◽  
Vol 85 (5) ◽  
pp. 441-457 ◽  
Author(s):  
Keyword(s):  
Respiratory Disease ◽  
Antibody Formation ◽  
The Other ◽  
Group A Streptococci ◽  
Group G Streptococci ◽  
Serological Type ◽  
Group A ◽  
Fibrinolytic Capacity

A method for the measurement of fibrinolysin production by beta hemolytic streptococci is described. The test was shown to be highly accurate in that repeated determinations showed only small variations. A study of 766 strains of beta hemolytic streptococci isolated from normal soldiers and patients with respiratory disease showed that fibrinolysin was produced by Lancefield groups A, C, and G, and, in addition, by a few strains of groups B and F. Group A streptococci produced more fibrinolysin on the average than the other groups. The median titers were 117 for group A, 61 for group C, and 20 for group G streptococci. In a study of 388 typed group A streptococci from different subjects the fibrinolytic capacity of an organism was shown to be related to the serological type. The importance of this observation in relation to the role of streptococcal fibrinolysis in infections is discussed. Finally, it was demonstrated that strains of streptococci which produced large amounts of fibrinolysin were capable of stimulating antifibrinolysin formation in patients whereas strains that produced small amounts only occasionally caused antibody formation.

scholarly journals The serotyping of hospital strains of streptococci belonging to Lancefield group C and group G

1983 ◽  
Vol 90 (1) ◽  
pp. 71-80 ◽  
Author(s):  
Androulla Efstratiou
Keyword(s):  
Animal Origin ◽  
Group A Streptococci ◽  
Human Origin ◽  
Protein Antigens ◽  
T Antigens ◽  
Group G Streptococci ◽  
Small Collection ◽  
Group A ◽  
Serious Disease ◽  
Lancefield Group

SUMMARYA collection of more than 300 strains belonging to either Lancefield group C or group G was made. The cultures had been isolated either sporadically from patients with serious disease or as apparent clusters from various nosocomial outbreaks. T-protein antigens were sought. So far, nine distinct serotypes have been found among the group G streptococci and seven serotypes amongst theStreptococcus equisimilis(group C) strains. Of the sixteen serotypes, four were the original T-types 7, 16, 20 and 21 described by Griffith (1934). Because of the similarities of representatives of the two groups to Lancefield group A streptococci (Griffith, 1934; Maxted & Potter, 1967) a few strains not unexpectedly carried T antigens usually seen in group A streptococci. Using this scheme it has been possible to serotype 76% ofS. equisimilisstrains of human origin and 82% of group G streptococci from human clinical material. A small collection of group C and group G streptococci of animal origin could not be serotyped with the experimental T-antisera.

Adherence and fibronectin binding are environmentally regulated in the group A streptococci

1993 ◽  
Vol 9 (6) ◽  
pp. 1213-1222 ◽  
Author(s):  
Tambryn VanHeyningen ◽  
George Fogg ◽  
Debra Yates ◽  
Emanuel Hanski ◽  
Michael Caparon
Keyword(s):  
Group A Streptococci ◽  
Group A ◽  
Fibronectin Binding

Kinetics of Serum Cytokine Profile in Mice after Injection of Supernatants of Group A Streptococci Culture

2019 ◽  
Vol 167 (3) ◽  
pp. 367-370 ◽  
Author(s):  
Т. А. Danilova ◽  
G. А. Danilina ◽  
А. А Аdzhieva ◽  
A. G. Minko
Keyword(s):  
Cytokine Profile ◽  
Group A Streptococci ◽  
Serum Cytokine ◽  
Group A ◽  
Kinetics Of
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