Abstract
Bovine tuberculosis is a devastating illness in cattle and it has the ability to transmit causing severe troubles in human. Mycobacterium bovis (M. bovis) infection in human indeed becomes increasingly critical especially in developing countries. Early diagnosis is very important to control and limit its spreading. The aim of this study is to examine the genetic differentiation and possibilities of transmission between cattle and human. Lymph node and sputum samples were collected from cattle and patients showing tuberculin test positive; respectively for phenotypic identification and for molecular examination by detection of IS6110 and oxyR genes which are specific for MTC and M. bovis; respectively. The phenotypic identification of sputum samples showed 80 % positive by both stain and culture, while, lymph nodes revealed 66 % and 84 % positive by stain and culture method; respectively. Alignment of oxyR gene sequences of M. tuberculosis and M. bovis was used as a feature for differentiation between the 2 genes in these two genetically closely similar microorganisms showed 99 % identities between the 2 genes. Alignment and phylogenetic analysis of Mpb70 gene sequences from animal and human origin showed very high relatedness (99.32 %) to each other confirming that the zoonotic transmission is most probably occurred.
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More From: Comparative Immunology, Microbiology and Infectious Diseases
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