Coagulase-negative staphylococci—Emerging mastitis pathogens
نویسندگان
چکیده
منابع مشابه
Coagulase-negative staphylococci-emerging mastitis pathogens.
Coagulase-negative staphylococci (CNS) have become the most common bovine mastitis isolate in many countries and could therefore be described as emerging mastitis pathogens. The prevalence of CNS mastitis is higher in primiparous cows than in older cows. CNS are not as pathogenic as the other principal mastitis pathogens and infection mostly remains subclinical. However, CNS can cause persisten...
متن کاملCoagulase-Negative Staphylococci in Bovine Sub-Clinical Mastitis
Mastitis is a common disease in dairy cows. The majority of the cases are subclinical, and many of those are due to infection with coagulase-negative staphylococci (CNS). CNS is a heterogeneous group of bacteria consisting of a large number of different species, but limited information is available on the epidemiology of mastitis due to these species. The overall aim of the thesis was to improv...
متن کاملPrevalence of coagulase-negative staphylococci in bovine mastitis in Zimbabwe.
This study was carried out to determine the prevalence of coagulase-negative staphylococci in clinical and subclinical mastitis in commercial and small-scale farms in Zimbabwe. Thirty five quarter milk samples from clinical mastitis cases and 371 quarter milk samples from cows with subclinical mastitis were cultured for bacterial pathogens. The most frequent pathogens isolated in clinical masti...
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Secreted toxins play important roles in the pathogenesis of bacterial infections. In this study, we examined the presence of secreted cytotoxic factors of coagulase-negative staphylococci (CoNS) from bovine clinical and subclinical mastitis. A 34- to 36-kDa protein with cell-rounding cytotoxic activity was found in many CoNS strains, especially in Staphylococcus chromogenes strains. The protein...
متن کاملMacrolide-lincosamide-streptogramin resistance phenotypes and genotypes of coagulase-positive Staphylococcus aureus and coagulase-negative staphylococcal isolates from bovine mastitis
BACKGROUND There are limited data available on macrolide-lincosamide-streptogramin (MLS) resistance of Staphylococcus aureus (S. aureus) and coagulase-negative staphylococci (CoNS) from bovine milk in China. To address this knowledge gap, MLS resistance was determined in 121 S. aureus and 97 CoNS isolates. Minimum inhibitory concentrations (MICs) of MLS antibiotics were determined by an agar di...
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ژورنال
عنوان ژورنال: Veterinary Microbiology
سال: 2009
ISSN: 0378-1135
DOI: 10.1016/j.vetmic.2008.09.015