Mycobacterium

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Related to Mycobacterium ulcerans: Buruli ulcer

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 ?
The incubation period of Buruli ulcer (Mycobacterium ulcerans infection).
Experimental Infection of Mosquitoes Larvae with Mycobacterium ulcerans and Monitoring of Infected Larvae.
We included patients, irrespective of their gender and age, who over the study period developed an unusual (atypical) ulcer or a nodule clinically evoking Mycobacterium ulcerans.
We hypothesized that it was either an immune reconstitution inflammatory syndrome due to Mycobacterium ulcerans or an inefficient ARV.
[2] World Health Organization, "Buruli ulcer disease (Mycobacterium ulcerans infection) Fact Sheet Nu199," World Health Organization, 2007, http://www.who.int/mediacentre/fact-sheets/ fs199/en/.
In 2002, Williams was approached by a French humanitarian who had been using the special clay to treat Buruli ulcer, a disfiguring illness caused by Mycobacterium ulcerans. This ailment leads to many amputations in Central and Western Africa.
Mycobacterium tuberculosis, Mycobacterium leprae, Mycobacterium ulcerans, Mycobacterium Chelonae (abscessus) and Mycobacterium kansassi.
Buruli ulcer is a skin disease caused by Mycobacterium ulcerans, a bacterium related to those causing tuberculosis and leprosy.
Mycobacterium ulcerans causes a necrotizing disease of skin and soft tissue known as Bairnsdale or Daintree ulcer in Australia and Buruli ulcer worldwide.
Mycobacterium ulcerans is the leading cause for Buruli ulcer disease (BUD), the third most widespread mycobacteriosis after tuberculosis and leprosy [1].
Persistent association of Mycobacterium ulcerans with West African predaceous insects of the family belostomatidae.
Known as Buruli ulcer, the disease is caused by Mycobacterium ulcerans, a microbe from the same group that causes tuberculosis and leprosy.