Department of Food Hygiene and Consumer Health Protection, Wrocław University of Environmental and Life Sciences, Norwida 31, 50-375, Wrocław, Poland.
Vet Microbiol. 2010 Aug 26;144(3-4):498-501. doi: 10.1016/j.vetmic.2010.01.029. Epub 2010 Feb 7.
Little is still known about the genotypes and prevalence of enterotoxin genes in animal-derived Staphylococcus aureus strains. In this study, spa type, the presence of known enterotoxin genes, and mecA gene was determined in 42 S. aureus isolates from poultry. All these isolates were classified as mecA-negative. t002, found in 19 staphylococci, was the most prevalent spa type in the studied population. t034 was found in 11 isolates. MLST performed on three t034 isolates confirmed its attachment to ST398. A strong association between the CC5 genetic background and the egc gene grouping in staphylococci of animal origin was confirmed, since all 23 isolates with t002, t214, and t010, belonging to CC5, contained egc1. No enterotoxin genes were found in 15 S. aureus isolates. In this population the most prevalent genotype was t034, found in 11 isolates. It was demonstrated that MSSA strains with the t034 ST398 genetic background also occur in poultry. This may imply, that ST398-type strains occur in a wider range of livestock species than previously believed.
关于动物源金黄色葡萄球菌菌株的基因型和肠毒素基因的流行情况，目前了解甚少。在这项研究中，对来自家禽的 42 株金黄色葡萄球菌分离株的 spa 型、已知肠毒素基因的存在情况和 mecA 基因进行了检测。所有这些分离株均被归类为 mecA 阴性。在 19 株葡萄球菌中发现的 t002 是研究人群中最流行的 spa 型。在 11 个分离物中发现了 t034。对三个 t034 分离物进行的 MLST 证实其与 ST398 有关。证实了动物源性金黄色葡萄球菌的 CC5 遗传背景与 egc 基因分组之间存在很强的关联，因为属于 CC5 的所有 23 个携带 t002、t214 和 t010 的分离物均含有 egc1。在 15 个金黄色葡萄球菌分离物中未发现肠毒素基因。在该人群中，最常见的基因型是 t034，在 11 个分离物中发现。证明了具有 t034 ST398 遗传背景的 MSSA 菌株也存在于家禽中。这可能意味着 ST398 型菌株在比以前认为更广泛的牲畜物种中存在。
