4.3 Article

Development of a LAMP assay for rapid and sensitive detection and differentiation of Mycobacterium avium subsp. avium and subsp. hominissuis

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LETTERS IN APPLIED MICROBIOLOGY
卷 69, 期 3, 页码 155-160

出版社

OXFORD UNIV PRESS
DOI: 10.1111/lam.13188

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LAMP; loop-mediated isothermal amplification; Mycobacterium avium; subsp; avium; subsp; hominissuis

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Mycobacterium avium causes atypical mycobacterial infection in humans and animals worldwide. M. avium comprises the subspecies avium (MAA), hominissuis (MAH), silvaticum (MAS) and paratuberculosis (MAP). The M. avium complex (MAC), comprising M. avium and M. intracellulare, causes opportunistic infections of humans. M. avium subsp. avium (MAA) mainly causes avian tuberculosis while subsp. hominissuis (MAH) mainly infects pig. Distinguishing between these two subspecies is essential to the effective control of these atypical mycobacterial infections and minimization of the resulting economic loss. For this purpose, we developed a loop-mediated isothermal amplification (LAMP) assay that rapidly and sensitively detects and differentiates MAA and MAH. This MAA-LAMP assay targeting IS901 correctly detected four MAA isolates but did not detect 27 MAH and 19 non-MAA/non-MAH mycobacterial isolates. The MAAH-LAMP assay targeting IS1245 detected four MAA and 27 MAH isolates but not the other 19 mycobacterial isolates. We believe that implementation of this LAMP assay will significantly improve public health and safety.

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