Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium setense Lamy et al. 2008.
Member of the Mycobacterium fortuitum complex.
Acid-fast, pleomorphic rods. Gram-positive. Aerial hyphae are not produced.
Colonies are smooth, convex, round, entire-edged, nonpigmented (beige), 1 mm in
diameter). Grows on 5% sheep blood agar and Lowenstein-Jensen agar within 2-4
days at 25-37 ºC, optimum 30 ºC. No growth occurs at 42 ºC. Growth occurs in the
presence of 5% NaCl.
Isolated from an excised skin and soft tissue specimen from a patient with osteitis.
Susceptible to imipenem, moxifloxacin, gatifloxacin, cefoxitin and amikacin, intermediate to tobramycin and clarithromycin, and resistant
to doxycycline, erythromycin and sulfamethoxazole.
- Lamy B, Marchandin H, Hamitouche K, Laurent F. Mycobacterium setense sp. nov., a Mycobacterium fortuitum-group organism
isolated from a patient with soft tissue infection and osteitis. Int J Syst Evol Microbiol 2008; 58:486-490.
Positive results for alkaline phosphatase, arylsulfatase (3 days), thermostable catalase, gelatinase, iron uptake, nitrate reductase,
pyrazinamidase, and urease.
Can utilize as sole carbon source D-mannitol and D-glucose.
No utilization of D-inositol, L-rhamnose, L-arabinose, or citrate.
(c) Costin Stoica