Corynebacterium Pyogenes

Abstract

The study comprises 136 strains of Corynebacterium pyogenes originating from cattle (105), swine (20), sheep (1), and insects (10). For comparison 2 strains of human origin and 1 strain of Gorynebacterium hemolyticum were examined.

One of the bovine strains was atypical, being gelatinase-negative, otherwise the strains of Cb. pyogenes were found to be biochemically identical apart from minor deviations in fermentation patterns (Table 1). Neither were antigenic differences demonstrated (gel diffusion analyses, Figs. 1 and 2).

Both of the human strains agreed biochemically with Cb. pyogenes (Table 1). By gel diffusion cross analyses one of them was found to be identical with Cb. pyogenes, the other not, though anti-genically related to it (Fig. 2).

Gb. hemolyticum deviated biochemically as well as serologically from Gb. pyogenes, but the 2 organisms shared antigenic determinants (Fig. 3).

Sammanfattning

Undersøgelsen omfatter 136 stammer af Cb. pyogenes isoleret fra kvæg (105), svin (20), får (1) og insekter (10). Til sammenligning blev undersøgt 2 stammer af human oprindelse samt én stamme af Corynebacterium hæmolyticum.

Én af de bovine stammer var atypisk, idet den ikke smeltede serum-gelatine. Bortset fra mindre afvigelser i forgæringsmønster (tabel 1) fandtes Cb. pyogenes stammerne i øvrigt identiske med hensyn til biokemiske og serologiske egenskaber (gel diffusions analyse, figur 1 og 2).

Begge humane stammer var i biokemisk henseende i overensstemmelse med Gb. pyogenes (tabel 1). Ved gel-diffusions kryds-analyse fandtes den ene identisk med Gb. pyogenes, den anden ikke identisk, men antigent beslsegtet med den (figur 2).

Cb. hsemolyticum afveg såvel biokemisk som serologisk fra Cb. pyogenes, men havde antigene determinanter fælles med den (figur 3).