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Biotypes of Arcanobacterium haemolyticum

1994; American Society for Microbiology; Volume: 32; Issue: 7 Linguagem: Inglês

10.1128/jcm.32.7.1654-1657.1994

1098-660X

Petteri Carlson, Kari Lounatmaa, S Kontiainen,

Mycobacterium research and diagnosis

Colony morphology, beta hemolysis on horse blood agar, beta-glucuronidase activity, and ability to ferment sucrose and/or trehalose defined two biotypes of Arcanobacterium haemolyticum. One, the smooth type, grew as smooth, beta-hemolytic colonies and was beta-glucuronidase negative but often fermented sucrose and/or trehalose, while the other, the rough type, grew as rough colonies and was nonhemolytic, beta-glucuronidase positive, and negative for sucrose and trehalose fermentation. About 75% of the A. haemolyticum strains studied (n = 138) were of the smooth type. The smooth type predominated in wound infections, while the rough type was isolated almost exclusively from respiratory tract specimens; thus, 84% of the smooth-type strains were derived from wounds and 91% of the rough-type strains were isolated from respiratory tracts.