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Related to Mycobacterium marinum: Mycobacterium chelonae, Mycobacterium ulcerans



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).


References in periodicals archive ?
Mycobacterium marinum is considered the most common cause of mycobacterial skin infections in humans.
Mycobacterium marinum causes a latent infection that can be reactivated by gamma irradiation in adult zebrafish.
After finding that doxyeyeline or other antibiotics healed the infections within 2 months, Ansdell lays the blame on a water-borne microbe called Mycobacterium marinum. A previous study had found that medaka fish can become infected with this microbe and tolerate it, he notes.
Fordham von Reyn and colleagues from Dartmouth-Hitchcock Medical Center in New Hampshire say that six of eight adults who developed sores after cleaning their fish tanks were infected with the bacterium Mycobacterium marinum, a microbe first identified in 1926.
La mas peligrosa es la bacteria Mycobacterium marinum, que suele dar origen a una grave--y previamente desconocida--forma de infeccion en la piel que manda al hospital a quienes la padecen.
Infection References Dermatologic (76-93) Vibrio cholerae non-01 Other vibrionaceae Mycobacterium marinum Erysipelothrix rhusopathiae Cercarial dermatitis Sea lice Algal dermatitis Gastrointestinal (32,58,76,88-90,94,95) Vibrio cholerae Other vibrionaceae Salmonella typhi Entamoeba histolytica Giardia lamblia Respiratory (88,89,96) Other vibrionaceae Francisella philomiragia Sepsis (32,77,79,88-90,97,98) Other vibrionaceae Francisella philomiragia Erysipelothrix rhusopathiae
Don't clean out the fish tank with a cut on your hand or you could pick up mycobacterium marinum, which can cause skin abscesses.
Surgical exploration of the nodule was consistent with an infectious process, and tissue was sent for bacterial, fungal, and mycobacterial cultures, including Mycobacterium marinum and Mycobacterium haemophilum.
The bug - Mycobacterium Marinum - spread after he cleaned out the tank without wearing gloves.
Two cases of Mycobacterium marinum soft tissue infection (ie, fish tank granuloma) are presented.
Mycobacterial infections in domestic and wild animals due to Mycobacterium marinum, M.
Mycobacterium marinum significantly decreased over time (modeled annual change -0.003 [95% CI -0.007 to 0.001]/100,000 population; p = 0.0480); isolation of other species from nonpulmonary sites was unchanged.

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