Mycobacterium

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Related to Mycobacterium bovis: Mycobacterium tuberculosis, Mycobacterium avium

Mycobacterium

 

a genus of bacteria, related to actinomycetes; it differs from true bacteria in a number of ways. The young vegetative cells are rodlike (0.5–0.8 × 2.2 microns); they are capable of branching and acquiring V or Y shapes. In old cultures spherical cells predominate. Mycobacteria, which do not form endospores, are nonmotile, gram-positive, and strictly aerobic. They reproduce mainly by dividing and budding. Mycobacteria contain carotenoids, and, as a result, their colonies are often pigmented (yellow, orange, or red). Owing to their cell composition (including lipides and wax), some myco-bacteria, in contrast to other bacteria, are acid-fast.

Mycobacteria are widely distributed in soils and are active in the mineralization of plant remains. Some species of Mycobacterium are nitrogen-fixing microorganisms; others are capable of metabolizing the carbohydrates of petroleum and natural gas and, when cultured, accumulate protein, which is used for fodder and other purposes. Some species of Mycobacterium are pathogenic to humans (for example, mycobacteria are the causative agents of tuberculosis and leprosy).

A. A. IMSHENETSKII

References in periodicals archive ?
a) Severe interpretation: used in geographical areas with high prevalence and in herds with confirmed Mycobacterium bovis infection.
Identification of Mycobacterium bovis in bovine clinical samples by PCR species-specific primers.
Whole genome sequence analysis of Mycobacterium bovis bacillus Calmette-Guerin (BCG) Tokyo 172: a comparative study of BCG vaccine substrains.
A Novel Multiplex- PCR for the Rapid Identification of Mycobacterium bovis in Clinical Isolates of Both Veterinary and Human Origin.
The order of a prime boost vaccination of neonatal calves with Mycobacterium bovis BCG and a DNA vaccine encoding mycobacterial proteins Hsp65, Hsp70 and Apa is not critical for enhancing protection against bovine tuberculosis.
Mycobacterium bovis infections in San Diego: a clinicoepidemiologic study of 73 patients and a historical review of a forgotten pathogen.
vaccae have been shown to increase TNF[alpha] production of mouse macrophages more than does Mycobacterium bovis bacillus Calmette-Guerin (BCG) in vitro (Marshall et al.
tuberculosis and Mycobacterium bovis, a bacterium that causes TB in cows and occasionally people.
However, TB can be caused by a number of other bacteria, of which Mycobacterium bovis, "bovine tuberculosis" is one of the more prevalent and has the widest host range of all TB bacteria.
Agreement between assays of cell-mediated immunity utilizing Mycobacterium bovis specific antigens for the diagnosis of tuberculosis in African buffaloes (Synceruscaffer).
Health chiefs in the south of England offered screening to 39 people who had come into contact with cats that were infected with Mycobacterium bovis - which normally causes bovine TB in cattle.

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