Mycobacterium duvalii
Encyclopedia
Mycobacterium duvalii
Colony characteristics
Physiology
Differential characteristics
Pathogenicity.
Strain ATCC 43910 = CCUG 41352 = CIP 104539 = DSM 44244 = JCM 6396 = NCTC 358.
Description
Gram-positive, nonmotile and pleomorphic acid-fast rods.Colony characteristics
- Bright yellow pigmented, scotochromogenicScotochromogenicScotochromogenic bacteria develop pigment in the dark or in the light. Runyon Group II nontuberculous mycobacteria are examples but the term could apply to many other organisms....
and rough or smooth colonies on Löwenstein-Jensen medium.
Physiology
- Fast growth on Löwenstein-Jensen medium at 25°C and 37°C within 7 days. No growth at 45°C.
- Resistant to isoniazidIsoniazidIsoniazid , also known as isonicotinylhydrazine , is an organic compound that is the first-line antituberculosis medication in prevention and treatment. It was first discovered in 1912, and later in 1951 it was found to be effective against tuberculosis by inhibiting its mycolic acid...
, rifampicinRifampicinRifampicin or rifampin is a bactericidal antibiotic drug of the rifamycin group. It is a semisynthetic compound derived from Amycolatopsis rifamycinica ...
, and sodium aminosalicylate.
Differential characteristics
- Characterised by the possession of 6 species-specific antigens demonstrable in immunodiffusion tests.
Pathogenicity.
Type strain
First isolated from cases of human leprosy by C. W. Duval.Strain ATCC 43910 = CCUG 41352 = CIP 104539 = DSM 44244 = JCM 6396 = NCTC 358.