Use of a gyrB PCR-RFLP method to diagnose tuberculosis and identify the causative Mycobacterium sp. in cattle and humans

GyrB PCR-restriction fragment length polymorphism (RFLP) could be applied to diagnose bovine and human tuberculosis and detect the causative agent. The lymph nodes and lungs from 50 cattle positive in tuberculin skin test were examined by histopathology and PCR-RFLP of a 1020-bp fragment of the gyrB...

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Bibliographic Details
Published in:Comparative immunology, microbiology and infectious diseases microbiology and infectious diseases, 2022-03, Vol.82, p.101767-101767, Article 101767
Main Authors: Oryan, Ahmad, Yazdi, Hassan Sharifi, Alidadi, Soodeh, Doostmohammadi, Sedigheh
Format: Article
Language:English
Subjects:
Bacilli
Cattle
DNA topoisomerase
Etiology
gyrB
Histopathology
Lymph nodes
M. tuberculosis
Mycobacterium bovis
Nose
PCR
Polymerase chain reaction
Polymorphism
Restriction fragment length polymorphism
Skin tests
Sputum
Tuberculin
Tuberculosis
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Summary:GyrB PCR-restriction fragment length polymorphism (RFLP) could be applied to diagnose bovine and human tuberculosis and detect the causative agent. The lymph nodes and lungs from 50 cattle positive in tuberculin skin test were examined by histopathology and PCR-RFLP of a 1020-bp fragment of the gyrB gene. Swab smear samples from the nasal cavity, pleural, and abdominal cavities were also evaluated by cytological methods. Furthermore, the cultures of 50 sputum samples from the patients were assessed by PCR-RFLP using RsaI, TaqI, SacII enzymes. In histopathology, 39 cattle were positive and the acid-fast bacilli were seen in the Ziehl-Neelsen stained sections. Using gyrB PCR-RFLP, M. bovis was found as the etiological agent in 41 cattle. In terms of the human samples, the causative agent in 41 samples was M. tuberculosis, and M. bovis was isolated from two samples. It seems that gyrB PCR-RFLP could be applied as an accurate and reliable method for identifying the M. tuberculosis complex (MBTC) MBTC species. The isolation of M. bovis from the human specimens should be considered in the control strategies for tuberculosis. •Differentiation of M. tuberculosis complex species through gyrB gene.•Diagnosis of tuberculosis using gyrB PCR-restriction fragment length polymorphism.•Species discrimination using gyrB PCR-restriction fragment length polymorphism.•M. bovis as a causative agent for human tuberculosis.
ISSN:0147-9571
1878-1667
DOI:10.1016/j.cimid.2022.101767