title: [A comparison of their virulence for mice and the enzymatic activity of Streptococcus pneumoniae strains].
abstract: In most cases no correlation between the virulence of S. pneumoniae and their enzymatic activity was registered in 101 S. pneumoniae strains isolated in pneumococcal infections of different localization. Pneumococcal strains belonging to different serotypes and characterized by their low virulence for mice (LD50 = 10(6) colony-forming units) had the highest neuraminidase and protease-alzolase activity in comparison with highly virulent cultures of these bacteria. In pneumococcal cultures in the R-form avirulence for mice occurred mainly in combination with low enzymatic activity.
authors.forename: L A
authors.initials: LA
authors.lastname: Vishniakova
authors.forename: Iu V
authors.initials: IuV
authors.lastname: Reztsova
mesh_terms: D000818:Animals; D010450:Endopeptidases / Q000032:analysis; D005634:Fructose-Bisphosphate Aldolase / Q000032:analysis; D051379:Mice; D009439:Neuraminidase / Q000032:analysis; D011008:Pneumococcal Infections / Q000382:microbiology; D012703:Serotyping; D013296:Streptococcus pneumoniae / Q000145:classification / Q000201:enzymology / Q000472:pathogenicity*; D014774:Virulence
chemical_list: D009439:Neuraminidase; D010450:Endopeptidases; D005634:Fructose-Bisphosphate Aldolase
vernacular_title: Sravnenie virulentnosti dlia mysheĭ i fermentativnoĭ aktivnosti shtammov Streptococcus pneumoniae.