PMID: 107721Feb 1, 1979

Haemagglutination by Staphylococcus saprophyticus and other staphylococcal species

Acta Pathologica Et Microbiologica Scandinavica. Section B, Microbiology
B Hovelius, P A Mårdh


Staphylococcus saprophyticus was found to differ from Staphylococcus epidermidis and Staphylococcus aureus by its ability to agglutinate sheep erythrocytes. On testing 30 strains of each species, 28 strains of S. saprophyticus and one strain each of the other two species, caused agglutination. Twenty-eight of 30 strains of staphylococcus cohnii and Staphylococcus xylosis failed to cause haemagglutination. The haemagglutinating activity of S. saprophyticus, when using a 10 per cent bacterial suspension was demonstrated in dilutions of 1:2-1:32. It was reduced twofold, at most, when exposing the bacteria to 56 degrees C for 30 minutes, while no agglutination could be demonstrated after treatment for 10 minutes at 86 degrees C. No haemagglutination could be demonstrated after treatment of the bacteria with 5 per cent solution of trypsin. Treatment of S. saprophyticus with 0.1 M EDTA did not affect the haemagglutinating activity, whereas exposure of the bacteria to 10 per cent trichloroacetic acid reduced the activity. The haemagglutination was D-mannose-resistant, and it was inhibited by homologous rabbit antiserum. The agglutinates dispersed when heated at 45-56 degrees C for 30 minutes. A few of the strains of S. saprophyticus t...Continue Reading


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