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| تعداد نشریات | 284 |
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| تعداد مقالات | 29,165 |
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First isolation of Bacillus licheniformis from bovine mastitis in Iran | ||
| Archives of Razi Institute | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 17 اردیبهشت 1402 | ||
| نوع مقاله: Original Articles | ||
| شناسه دیجیتال (DOI): 10.22092/ari.2023.361698.2671 | ||
| نویسندگان | ||
| Bahar Nayeri Fasaei* 1؛ Iradj Ashrafi Tamai2؛ Seyed Mehdi Joghataei2 | ||
| 1Department of Microbiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran. | ||
| 2Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran | ||
| چکیده | ||
| Bacillus licheniformis is a gram-positive, endospore-forming, saprophytic, and facultative anaerobe that is resistant to heat and environmental conditions. This study was the first to isolate and confirm B. licheniformis as a cause of bovine mastitis in Iran. In the summer of 2020, 105 samples of mastitic milk were collected from dairy farms around Tehran and were sent to the microbiology laboratory of the Faculty of Veterinary Medicine at the University of Tehran. The bacterial agents were identified using selective and differential culture media and were confirmed by PCR to contain toxin synthetase genes licA, licB, and licC in mastitic isolates of B. licheniformis. Antimicrobial resistance patterns for two isolates of B. licheniformis were determined for 19 antibacterials. Staphylococcus aureus and Escherichia coli were identified as the major organisms in the samples. B. licheniformis was isolated from the two samples which contained all three genes. Both isolates were resistant to streptomycin, trimethoprim sulfamethoxazole, cefixime, ampicillin, bacitracin, clindamycin, and gentamicin. B. licheniformis has been reported for the first time in Iran as a cause of bovine mastitis with clinical symptoms. The initial isolation of toxin-producing strains of B. licheniformis from mastitic cows in Iran is of concern for the safety of dairy products. In principle, the selection of strains harbouring a toxigenic potential should not be used as feed additives and animal food. However, full genome sequencing is suggested to search for gene coding for toxins. | ||
| کلیدواژه‌ها | ||
| Bacillus licheniformis؛ Mastitis؛ Bovine؛ Toxin synthetase genes؛ Isolation | ||
| عنوان مقاله [English] | ||
| اولین جداسازی باسیلوس لیکنی فورمیس از ورم پستان گاوی در ایران | ||
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آمار تعداد مشاهده مقاله: 93 |
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