Virulence and resistance profiling of Staphylococcus aureus isolated from subclinical bovine mastitis in the Pakistani Pothohar region.
Animals
Cattle
Mastitis, Bovine
/ microbiology
Female
Staphylococcal Infections
/ microbiology
Pakistan
Virulence
/ genetics
Anti-Bacterial Agents
/ pharmacology
Staphylococcus aureus
/ genetics
Methicillin-Resistant Staphylococcus aureus
/ genetics
Virulence Factors
/ genetics
Microbial Sensitivity Tests
Milk
/ microbiology
Bacterial Proteins
/ genetics
Staphylococcus aureus
Antibiotic resistance
MRSA
SCCmec typing
Subclinical mastitis
Virulence genes
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
24 06 2024
24 06 2024
Historique:
received:
01
12
2023
accepted:
20
06
2024
medline:
25
6
2024
pubmed:
25
6
2024
entrez:
24
6
2024
Statut:
epublish
Résumé
Mastitis is considered one of the most widespread infectious disease of cattle and buffaloes, affecting dairy herds. The current study aimed to characterize the Staphylococcus aureus isolates recovered from subclinical mastitis animals in Pothohar region of the country. A total of 278 milk samples from 17 different dairy farms around two districts of the Pothohar region, Islamabad and Rawalpindi, were collected and screened for sub clinical mastitis using California Mastitis Test. Positive milk samples were processed for isolation of Staphylococcus aureus using mannitol salt agar. The recovered isolates were analyzed for their antimicrobial susceptibility and virulence genes using disc diffusion and PCR respectively. 62.2% samples were positive for subclinical mastitis and in total 70 Staphylococcus aureus isolates were recovered. 21% of these isolates were determined to be methicillin resistant, carrying the mecA gene. S. aureus isolates recovered during the study were resistant to all first line therapeutic antibiotics and in total 52% isolates were multidrug resistant. SCCmec typing revealed MRSA SCCmec types IV and V, indicating potential community-acquired MRSA (CA-MRSA) transmission. Virulence profiling revealed high prevalence of key genes associated with adhesion, toxin production, and immune evasion, such as hla, hlb, clfA, clfB and cap5. Furthermore, the Panton-Valentine leukocidin (PVL) toxin, that is often associated with recurrent skin and soft tissue infections, was present in 5.7% of isolates. In conclusion, the increased prevalence of MRSA in bovine mastitis is highlighted by this study, which also reveals a variety of virulence factors in S. aureus and emphasizes the significance of appropriate antibiotic therapy in combating this economically burdensome disease.
Identifiants
pubmed: 38914650
doi: 10.1038/s41598-024-65448-9
pii: 10.1038/s41598-024-65448-9
doi:
Substances chimiques
Anti-Bacterial Agents
0
Virulence Factors
0
Bacterial Proteins
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
14569Subventions
Organisme : Pakistan Science Foundation
ID : project no AAU-790
Informations de copyright
© 2024. The Author(s).
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