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Detection of the Mycobacterium avium complex in dogs with lymphadenitis | ||
| Iranian Journal of Veterinary Research | ||
| دوره 24، شماره 4 - شماره پیاپی 85، 2023، صفحه 320-327 اصل مقاله (520.77 K) | ||
| نوع مقاله: Full paper (Original article) | ||
| شناسه دیجیتال (DOI): 10.22099/ijvr.2023.45268.6651 | ||
| نویسندگان | ||
| P. Tikute1؛ D. Narang* 2؛ M. Chandra2؛ S. Turkar3؛ K. Gupta4 | ||
| 1MVSc Student in Veterinary Microbiology, Department of Veterinary Microbiology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana-141004, Punjab, India | ||
| 2Department of Veterinary Microbiology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana-141004, Punjab, India | ||
| 3Department of Veterinary Medicine, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana-141004, Punjab, India | ||
| 4Department of Veterinary Pathology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana-141004, Punjab, India | ||
| چکیده | ||
| Background: Mycobacterium avium complex (MAC) is connected to human immunosuppressive diseases, including HIV-AIDS, and may pose a zoonotic threat. MAC causes lymphadenopathy in children, respiratory infection in adults, and generalized infection in immunocompromised individuals. Infection with nontuberculous Mycobacteria (NTM) in humans is now primarily brought on by MAC. Recently, MAC members have emerged as pathogenic organisms for animals and humans. While dogs are generally resistant to mycobacterial infections, there have been some cases of infection that result in systemic or disseminated diseases. The organisms can be transmitted to dogs through oral contact, and their faeces can be a possible source of infection for dog owners. It is important to note that this ailment is zoonotic, especially if infected pet dogs are in prolonged contact with their humans. Aims: The study was planned to demonstrate the occurrence of MAC organisms and other Mycobacteria in dogs associated with lymphadenopathy cases with special emphasis on lymphadenitis. Methods: A total of 123 samples (100 lymph node aspirates, 15 lymph node tissues, and 8 blood samples) from 83 dogs suspected of lymphadenitis accompanied by gastroenteritis, chronic skin infections, immunosuppression, chronic pulmonary diseases, and other chronic undiagnosed diseases were studied. The samples were processed for cytological and microscopic examination by Ziehl-Neelsen staining. Following the decontamination procedure, the aspiration and lymph node tissue samples were inoculated into Middlebrook 7H11 media for up to 8 weeks. The aspirated material was also directly used for molecular detection by triplex-nested polymerase chain reaction (nPCR) assay. Results: A cytological study revealed pyogranulomatous inflammation of the lymph node tissue. Impression smears from lymph node tissues displayed the presence of acid-fast organisms. Out of 83 cases of dogs, 8 were found to be positive for Mycobacterium spp. Among those 8 positive cases, 3 were confirmed to belong to MAC, and 5 belonged to the Mycobacterium tuberculosis complex (MTB complex). Conclusion: MAC and MTB are the underestimated bacteria that could be the causative agents of lymphadenitis in animals. | ||
| کلیدواژهها | ||
| Lymph node aspirate؛ Lymph node tissue؛ Mycobacterium avium complex؛ Mycobacterium tuberculosis complex؛ Nested PCR | ||
| مراجع | ||
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