Mycobacterium brumae

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Mycobacterium brumae
Scientific classification
Kingdom: Bacteria
Phylum: Actinobacteria
Order: Actinomycetales
Suborder: Corynebacterineae
Family: Mycobacteriaceae
Genus: Mycobacterium
Species: M. brumae
Binomial name
Mycobacterium brumae
Luquin et al. 1993, ATCC 51384

Mycobacterium brumae is a rapidly growing environmental mycobacterial species identified in 1993. Aside from one 2004 report of a catheter related bloodstream infection no other infections by this organism have been reported. It was first isolated from water, soil and one human sputum sample in Spain.

Description[edit]

Microscopy

  • Gram-positive, nonmotile, mostly strongly acid-fast rods, 2.0-2.5 µm long and 0.3 to 0.5 µm wide.

Colony characteristics

  • Flat, rough, and undulated yellow, nonphotochromogenic colonies

Physiology

  • Rapid growth occurs within 5 days at 25°C, 30°C and 37°C, but not at 45°C on Löwenstein-Jensen medium and Middlebrook 7H10 agar.
  • Production of thermostable catalase.
  • Positive for β-glucosidase, nitrate reductase, penicillinase, trehalase, urease and iron uptake.
  • Tween 80 hydrolysis after 10 days.
  • No accumulation of niacin, no degradation of salicylate to catechol.
  • No growth on MacConkey agar without crystal violet.

Pathogenesis[edit]

  • In 2004 a patient with breast cancer was reported to have a catheter related bloodstream infection.

Type strain[edit]

  • First isolated from water, soil and human sputum samples in Barcelona, Spain.
  • Strain CR-270 = ATCC 51384 = CCUG 37586 = CIP 103465 = DSM 44177 = JCM 12273.

References[edit]

  • Luquin (M.), 1993. Mycobacterium brumae sp. nov., a rapidly growing, nonphotochromogenic mycobacterium. Int. J. Syst. Bacteriol., 1993, 43, 405-413.
  • Lee, S.A, 2004. Catheter-related bloodstream infection caused by Mycobacterium brumae. J Clin Microbiol. 2004 Nov;42(11):5429-31.