SOME BIOLOGICAL FEATURES OF PROTEUS BACILLI .2. HEMOLYTIC ACTIVITIES OF PROTEUS-MIRABILIS AND PROTEUS-VULGARIS STRAINS

  • 1 January 1983
    • journal article
    • research article
    • Vol. 32  (4) , 345-351
Abstract
The hemolytic activities of P. mirabilis and P. vulgaris strains were studied under different conditions. No filterable .alpha.-hemolysin could be detected in P. mirabilis uropathogens provided from patients with urinary tract infections. Together with the results presented in an accompanying paper, in which 3 clinical isolates with temporary ability to produce a soluble hemolysin were described, the occurrence of .alpha.-hemolytic P. mirabilis isolates did not exceed 3%. Cell-bound .beta.-hemolysin is present in nearly 35% of P. mirabilis urinary strains. Another kind of hemolytic activity was observed when P. mirabilis and P. vulgaris strains were grown in liquid media supplemented with erythrocytes. During the logarithmic growth phase nearly 100% of P. mirabilis and P. vulgaris strains of various origin hemolyzed 100-50% of erythrocytes. Except for Serratia, the other representatives of Enterobacteriaceae did not demonstrate such activity in the same conditions. The preliminary characteristics of this phenomenon is given.