Mycobacterium arupense

Mycobacterium arupense is a slowly growing mycobacterium first isolated from soil and human sputum samples in Spain. Etymology: arupense, pertaining to the ARUP Institute for Clinical and Experimental Pathology, where the type strain was characterized.

Mycobacterium arupense
Scientific classification
Kingdom:
Bacteria
Phylum:
Actinobacteria
Order:
Actinomycetales
Suborder:
Corynebacterineae
Family:
Mycobacteriaceae
Genus:
Mycobacterium
Species:
M. arupense
Binomial name
Mycobacterium arupense
Cloud et al. 2006, ATCC BAA-1242

Description

Microscopy

  • Gram-positive, nonmotile and acid-fast rods (1-3 µm x 0.5-0.7 µm), mostly strong acid-fast.

Colony characteristics

  • Colonies are eugonic, rough and nonpigmented.

Physiology

  • Colonies occur within 5 days at 30 °C (optimum temperature, no growth at 45 °C) on Löwenstein-Jensen medium and on Middlebrook 7H10 agar and slowly (10–12 days) at 37 °C; no growth occurs at 42 °C.
  • No growth on MacConkey agar without crystal violet.
  • The type strain is resistant to D-cycloserine, streptomycin, isoniazid (0.1 and 1 mg/l), rifampin, and thiacetazone and is susceptible to isoniazid (10 mg/l), kanamycin, and capreomycin.

Pathogenesis

There are emerging reports of human pathogenesis caused by Mycobacterium arupense. Pulmonary infection and tenosynovitis have been documented. A recent case of recurrent soft tissue abscess caused by Mycobacterium arupense has been identified.

Type strain
  • First isolated from water samples, from soil and human sputum samples, Spain.
  • Strain AR30097 = ATCC BAA-1242 = DSM 44942.
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References
    • CLOUD (J.L.), MEYER (J.J.), POUNDER (J.I.), JOST Jr. (K.C.), SWEENEY (A.), CARROLL (K.C.) and WOODS (G.L.): Mycobacterium arupense sp. nov., a non-chromogenic bacterium isolated from clinical specimens. Int. J. Syst. Evol. Microbiol., 2006, 56, 1413-1418.


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