| Mycobacterium intermedium |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium intermedium Meier et al. 1993.
Member of the Mycobacterium simiae complex.
Mycobacterium, Mycobacterium intermedium Meier et al. 1993.
Member of the Mycobacterium simiae complex.
Acid-alcohol-fast coccobacilli, 2.0 x 2.6 μm. Does not form aerial hyphae. Capsule is
not produced. Asporogenous.
not produced. Asporogenous.
Colonies on Lowenstein-Jensen medium in 2-3 weeks, are 3-5 mm in diameter,
eugonic, smooth, and photochromogenic. Temperature range for growth is 22-41 ºC
(optimum 31 and 37 ºC).
eugonic, smooth, and photochromogenic. Temperature range for growth is 22-41 ºC
(optimum 31 and 37 ºC).
Isolated from sputum.
Resistant to isoniazid (1 µg/ml) and streptomycin (8 µg/ml). Susceptible to ethambutol (2 µg/ml) and rifampin (32 µg/ml).
Resistant to isoniazid (1 µg/ml) and streptomycin (8 µg/ml). Susceptible to ethambutol (2 µg/ml) and rifampin (32 µg/ml).
Isolated from a patient with pulmonary disease.
- John G. Magee and Alan C. Ward 2012. Family III. Mycobacteriaceae Chester 1897, 63AL in Bergey’s Manual of Systematic
Bacteriology, Volume Five The Actinobacteria, Part A, Michael Goodfellow & al. (editors), 312-375. - Reischl U, Emler S, Horak Z, Kaustova J, Kroppenstedt RM, Lehn N, Naumann L. Mycobacterium bohemicum sp. nov., a new
slow-growing scotochromogenic mycobacterium. Int J Syst Bacteriol 1998; 48:1349-1355. - Meier A, Kirschner P, Schroder KH, Wolters J, Kroppenstedt RM, Bottger EC. Mycobacterium intermedium sp. nov. Int J Syst
Bacteriol 1993; 43:204-209.
Positive results for arylsulfatase (3, 7 and 10 days), acid phosphatase, catalase inactivated at 68 ºC, semiquantitative catalase test,
alpha-esterase, beta-galactosidase, Tween hydrolysis and urea hydrolysis.
Negative results for niacin accumulation, nitrate reduction, and pyrazinamidase.
Variable results for beta-esterase.
alpha-esterase, beta-galactosidase, Tween hydrolysis and urea hydrolysis.
Negative results for niacin accumulation, nitrate reduction, and pyrazinamidase.
Variable results for beta-esterase.
(c) Costin Stoica
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