This is the first study to characterize the environmental conditions which contribute to the presence and proliferation of environmental mycobacteria in a major freshwater river. Over 20 different species of environmental mycobacteria were isolated, including the pathogenic M. avium and M. kansasii. Species of the rapidly growing M. fortuitum complex were the most commonly isolated mycobacteria...

BACKGROUND Mycobacteria other than M. bovis may interfere with current bovine tuberculosis diagnostic tests resulting in false positive test results. As the prevalence of M. bovis decreases in the United States, interference from other mycobacteria play an increasingly important role in preventing the eradication of M. bovis. To identify mycobacteria other than M. bovis that may be interfering ...

During the last few years a number of reports have appeared in literature regarding isolation of mycobacteria from patients of tuberculosis, which were different in several respects from the well known Mycobacterium tuberculosis hominis or bovis. (Buhler and Pollak, 1953, Tempe and Runyon, 1954. Nassau and Hamilton, 1957, Davis, et al, 1966). These Mycobacteria have been designated as “Anonymou...

Tuberculosis, which is caused by infection with Mycobacterium tuberculosis (Mtb), remains one of the major bacterial infections worldwide. Host defense against Mtb is mediated by a combination of innate and adaptive immune responses. In the last 15 years, the mechanisms for activation of innate immunity have been elucidated. Toll-like receptors (TLRs) have been revealed to be critical for the r...

Infections with atypical mycobacteria in Australia during 2000 occurred at a rate of 1.8 cases per 100,000 population. The main sites of disease were the respiratory tract, soft tissue, and the lymphatics. The Mycobacterium avium complex was the most common group of mycobacteria isolated from respiratory, lymphatic sites, and blood. The rapidly growing mycobacteria, predominantly the M. fortuit...

The esat-6 and cfp-10 genes are essential for virulence in Mycobacterium tuberculosis. Among nontuberculous mycobacteria, we found these genes only in M. kansasii, M. szulgai, M. marinum, and M. riyadhense, with unique sequences. This adds a phylogenetic and taxonomical characteristic and may represent a virulence factor for nontuberculous mycobacteria.

Nontuberculous mycobacteria (NTM) are opportunistic pathogens that are widely distributed in the environment. There is a lack of data on species distribution of these organisms from Iran. This study consists of a review of NTM articles published in Iran between the years 1992 and 2014. In this review, 20 articles and 14 case reports were identified. Among the 20 articles, 13 (65%) studies focus...

Pa vias, M., Patlokova, Vlasta: Occurrence of Mycobacteria in Sawdust, Straw, Hay and Their Epizootiological Significance. Acta vet. Bmo, 54, 1985: 85-90. The occurrence of mycobacteria in sawdust and straw used as bedding material in cattle and pig herds was investigated using 147 sawdust and straw samples from 47 farms. The most important epizootiological finding was the demonstration of nine...

The general lack of permeability small molecules observed for Mycobacterium tuberculosis (Mtb) is most ascribed to its unique cell envelope. More specifically, the outer mycomembrane hypothesized be principal determinant access antibiotics their molecular targets. We describe a novel assay that combines metabolic tagging peptidoglycan, which sits directly beneath mycomembrane, click chemistry t...