Abstract
Staphylococcus aureus is known as a major causative agent of mastitis in dairy cattle. In the presentstudy, 104 isolates of Staphlylococcus originated from subclinical mastitis cattle characterized for thephenotypic properties and the presence of Staphylococcal protein A (Spa). Some bacteria were resistancesagainst several antibiotics were also studied, such as, streptomycin, cefepime, nitrofurantoin, amikacin,chloramphenicol, and ciprofloxacin. About 78% of the isolated were moderately sensitive to nitrofurantoin,while 89% were highly resistant to cefepime and ciprofloxacin. Using the various mammals’ sera, sevenisolates revealed the presence of Spa.
Highlights
Staphylococcus aureus is a major opportunistic pathogen in humans and one of the most important pathogenic Staphylococcus species in veterinary medicine (Peton and Loir, 2014)
Staphylococci captured within a fibrin meshwork, enables this pathogen to disseminate lesions and to resist opsonophagocytic clearance by host immune cells
From the tested S. aureus isolates, we found S. aureus mutant that is showed by sample of 49, which does not express protein A
Summary
Staphylococcus aureus is a major opportunistic pathogen in humans and one of the most important pathogenic Staphylococcus species in veterinary medicine (Peton and Loir, 2014). S. aureus is a commensally bacterium of the skin and mucosa of human, dairy cattle, and other warm-blooded animals. S. aureus is of particular interest due to special capacity to acquire resistance (Hoffmann et al, 2015). Circumstances such as the increasing prevalence of multidrug resistant S. aureus continue to press the growing international concern and need for the latest situation in farmed setting. It shows that S. aureus differs from other pathogens in that it has evolved as a commensally (Rasigade and Vandenesch, 2014)
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