Characterization and molecular evaluation of Staphylococcus aureus isolated from poultry and dairy cattle milk in Iraq

2022 ◽  
Author(s):  
Anas E. Almousawi ◽  
Abdullah O. Alhatami ◽  
Noor A. Neama ◽  
Aiman Mohammed Baqir
2021 ◽  
Vol 15 (2) ◽  
pp. 140-145
Author(s):  
Amanda Pereira Lucas ◽  
Andriele Renata Barbosa de Farias ◽  
Elizabete Cristina da Silva ◽  
Kleber Régis Santoro ◽  
Marcelo Mendonça ◽  
...  

There are few reports in the literature about genetic determinants of resistance to β-lactams in Staphylococcus aureusisolated from dairy cattle located in the municipality of Garanhuns, state of Pernambuco, Brazil. Thus, this study aimed to investigate the production of β-lactamase and the presence of the blaZ and mecA genes in penicillin-resistant S. aureus isolated from cases of subclinical bovine mastitis in the city of Garanhuns. Forty-six strains of penicillin-resistant S. aureus were evalu-ated using the nitrocefin disc test and duplex PCR. The results revealed that 45 strains (97.8%) were positive for β-lactamase production and 44 (95.7%) carried the blaZ gene. Among the latter, 43 (97.7%) were β-lactamase producers and only one (2.3%) was not. The mecA gene was not detected in any of the isolates investigated. The results suggest that enzymatic inacti-vation is the main β-lactam resistance mechanism expressed by S. aureus in the herds analyzed.


2020 ◽  
Vol 9 (20) ◽  
Author(s):  
John D. Lippolis ◽  
Ellie J. Putz ◽  
Hao Ma ◽  
David P. Alt ◽  
Eduardo Casas ◽  
...  

Staphylococcus aureus can cause mastitis in dairy cattle. We report the genome sequence of a Staphylococcus aureus strain isolated from a dairy cow with a chronic case of mastitis. The infection with this strain of Staphylococcus aureus was not cleared from the animal with antibiotic treatment.


2020 ◽  
Vol 103 (3) ◽  
pp. 2685-2692
Author(s):  
A. Gazzola ◽  
A.M. Maisano ◽  
V. Bianchini ◽  
F. Vezzoli ◽  
A. Romanò ◽  
...  

2018 ◽  
Vol 59 (3) ◽  
pp. 357-363 ◽  
Author(s):  
Maria Belen Ambroggio ◽  
Melina Soledad Perrig ◽  
Cecilia Camussone ◽  
Nazarena Pujato ◽  
Alicia Bertón ◽  
...  

2001 ◽  
Vol 48 (5) ◽  
pp. 373-383 ◽  
Author(s):  
M. Hoedemaker ◽  
B. Korff ◽  
B. Edler ◽  
M. Emmert ◽  
E. Bleckmann

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