ArticleTropical animal health and production2018
Frequency of enterotoxins, toxic shock syndrome toxin-1, and biofilm formation genes in Staphylococcus aureus isolates from cows with mastitis in the Northeast of Brazil.
Article in Tropical animal health and production, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 28 citations in OpenAlex.
- Review
- Occurrence ofToxins · 2025Review
- Antibacterial and Antibiofilm Activity ofJournal of microbiology and biotechnology · 2025Article
- Virulence genes and antibiotic resistance profiling of staphylococcus species isolated from mastitic dairy cows in and around Bahir dar, Ethiopia.BMC microbiology · 2025Article
- Article
- Characteristic profiles of molecular types, antibiotic resistance, antibiotic resistance genes, and virulence genes ofFrontiers in cellular and infection microbiology · 2025Article
- Coagulase-negative staphylococci from bovine milk: Antibiogram profiles and virulent gene detection.BMC microbiology · 2024Article
- Epidemiology and zoonotic potential of Livestock-associated Staphylococcus aureus isolated at Tamil Nadu, India.BMC microbiology · 2023Article
- Detection of Antibiotic Resistance, Virulence Gene, and Drug Resistance Gene ofMicrobiology spectrum · 2022Article
- Autophagy inFrontiers in cellular and infection microbiology · 2021Review
- Review
- Article
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Staphylococcus aureus is among the microorganisms more frequently associated with subclinical bovine mastitis. S. aureus may produce several virulence factors. This study aimed at determining the frequency of virulence factors such as enterotoxins, toxic shock syndrome toxin 1, and ica adhesion genes. In addition, we assessed antimicrobial drug resistance in S. aureus isolated from clinical and subclinical cases of mastitis. A total of 88 cows with clinical or subclinical mastitis were sampled, resulting in 38 S. aureus isolates, from which 25 (65.78%) carried toxin genes, including seb, sec, sed, tst, and icaD adhesion gene. These S. aureus isolates belong to 21 ribotypes and three S. aureus strains belonged to the same ribotype producing ica adhesion gene. Approximately 90% of S. aureus strains obtained in our study demonstrated multiple resistance to different antimicrobial agents. The most efficacious antimicrobial agents against the isolates were gentamicin, amoxicillin, and norfloxacin. Gentamicin was the most efficacious agent inhibiting 78.95% of the S. aureus isolates. The least efficacious were penicillin, streptomycin, and ampicillin. Our results can help in understanding the relationship between virulence factors and subclinical mastitis caused by S. aureus. Further research about diversity of S. aureus isolates and genes responsible for the pathogenicity of subclinical mastitis is essential.
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