title: Hemolytic interactions of Dermatophilus congolensis.
abstract: The strains of Dermatophilus congolensis grew on blood agar with washed sheep erythrocytes with marked total hemolysis. In testing for hemolytic interactions they gave a significant synergistic effect of a characteristic shape with Rhodococcus equi and Streptococcus agalactiae, whereas with Staphylococcus aureus producing beta hemolysin and with Staphylococcus aureus producing delta hemolysin a simultaneous synergistic as well as antagonistic effect were observed. First of all a conspicuous inhibition of in the beta hemolysin zone began and then the hemolytic effect of D. congolensis was enhanced. A similar double reaction was also observed with Listeria ivanovii. With delta hemolysin there was an inhibition of the hemolytic effect of D. congolensis and at the same time a synergistic effect could be observed. Also D. congolensis gave a weak synergistic effect with Micrococcus lylae and Listeria monocytogenes, and a further weak antagonistic effect with alpha hemolysin of Staphylococcus aureus, Staphylococcus hyicus, Staphylococcus chromogenes and Micrococcus luteus. No interaction of D. congolensis was established with Corynebacterium pseudotuberculosis.
authors.affiliation: Institute of Microbiology and Immunology, University of Veterinary Medicine, Brno, CSFR.
authors.forename: B
authors.initials: B
authors.lastname: Skalka
authors.forename: L
authors.initials: L
authors.lastname: Pospísil
mesh_terms: D000192:Actinomycetales / Q000378:metabolism*; D006460:Hemolysin Proteins / Q000096:biosynthesis*; D006461:Hemolysis; D008087:Listeria / Q000378:metabolism; D008837:Micrococcus / Q000378:metabolism; D016929:Rhodococcus equi / Q000378:metabolism; D013210:Staphylococcus / Q000378:metabolism; D013292:Streptococcus agalactiae / Q000378:metabolism
chemical_list: D006460:Hemolysin Proteins