Production of enterotoxins and toxic shock syndrome toxin by staphylococcus aureus strains isolated from bovine mastitis

ABSTRACT
A total of 72 strains of Staphylococcus aureus were examined for the production of staphylococcal enterotoxins (SE) A, B, C, D and toxic shock syndrome toxin (TSST-1). The strains were isolated from milk samples from cows with mastitis in dairy herds of São Paulo State, Brazil. Off 72 isolates, 38 (52.8%) produced SEA, 38 (52.8%) SEB, 32 (44.4%) SED, 28 (38.9%) SEC and 27 (37.5%) TSST-1. From the 72 strains, 66 (91.7%) produced, at least, one or more toxin, including TSST-1.
In spite even of the presence of stumps of  enterotoxigenic Staphylococcus  aureus  does not implicate necessarily in the occurrence of cases of intoxications, it is known  that  milk is an excellent substrate for its proliferation and the temperature of the mammal gland is ideal for the production of enterotoxins in concentrations sufficient to cause illness in man.
The discoveries of this work acquire an importance still larger mainly to be considered the thermo stability of the Staphylococcal enterotoxins preformed and the consequent possibility of its persistence so much in the pasteurized milk as in its derived.
Keywords: bovine; mastitis; Staphylococcus aureus; enterotoxins; TSST-1