Abstract |
Coagulase-negative staphylococci (CNS) are the most prevalent mastitis pathogens. However, virulence characteristics of CNS have not been well determined. The presence of genes for enterotoxins (sea-sej), toxic shock syndrome toxin-1 (tst), the exfoliative toxins (eta, etb), Panton-Valentine leukocidin (pvl) and mecA of CNS species isolated from cows and ewes with subclinical mastitis was investigated in this study. A total of 121 CNS (81 cows, 40 ewes) representing 18 different Staphylococci species were examined by PCR, and 38.1% (33 cows and 13 ewes) of CNS isolates had one or more se genes. The difference between percentages for SE toxin genes of CNS strains isolated from cows (40.7%) and ewes (32.5%) was not statistically significant (P > 0.05; χ(2) = 0.380). It was found that S. simulans isolates had the highest prevalent se genes. Furthermore, the most common SE gene types was seh-sej. In this study, none of the isolates harbored the toxic shock syndrome toxin gene (tsst) and the exfoliative toxin genes (eta, etb). Five cow (6.17%) and three ewe CNS (7.5%) isolates had mecA gene. Three cow (3.7%) and two ewe CNS (5.0%) isolates had pvl gene. In conclusion, the present study showed that CNS species isolated from cows and ewes could serve as potential reservoir of se, mecA, and pvl genes.
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Authors | Nilgün Unal, Oya Doğu Cinar |
Journal | Tropical animal health and production
(Trop Anim Health Prod)
Vol. 44
Issue 2
Pg. 369-75
(Feb 2012)
ISSN: 1573-7438 [Electronic] United States |
PMID | 22160510
(Publication Type: Journal Article)
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Chemical References |
- Bacterial Toxins
- DNA, Bacterial
- Enterotoxins
- Exotoxins
- Leukocidins
- Panton-Valentine leukocidin
- enterotoxin B, staphylococcal
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Topics |
- Animals
- Bacterial Toxins
(genetics)
- Cattle
- Chi-Square Distribution
- DNA, Bacterial
(chemistry, genetics)
- Enterotoxins
(genetics)
- Exotoxins
(genetics)
- Female
- Leukocidins
(genetics)
- Mastitis, Bovine
(microbiology)
- Methicillin Resistance
(genetics)
- Polymerase Chain Reaction
(veterinary)
- Sheep
- Staphylococcal Infections
(microbiology, veterinary)
- Staphylococcus
(genetics, isolation & purification)
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