Mycobacterium canariasense
Encyclopedia
Mycobacterium canariasense is a rapidly growing, non-pigmented mycobacterium
first isolated from blood samples obtained from 17 patients with febrile syndrome. Etymology
: canariasense; referring to the Latin adjective of the Spanish
islands where all strains were isolated.
Colony characteristics
Physiology
of 5% NaCl.
Differential characteristics
Mycobacterium
Mycobacterium is a genus of Actinobacteria, given its own family, the Mycobacteriaceae. The genus includes pathogens known to cause serious diseases in mammals, including tuberculosis and leprosy...
first isolated from blood samples obtained from 17 patients with febrile syndrome. Etymology
Etymology
Etymology is the study of the history of words, their origins, and how their form and meaning have changed over time.For languages with a long written history, etymologists make use of texts in these languages and texts about the languages to gather knowledge about how words were used during...
: canariasense; referring to the Latin adjective of the Spanish
islands where all strains were isolated.
Description
Microscopy- Weakly acid-fast rods.
Colony characteristics
- Visible growth appears in 2–3 days as smooth, moist, shiny, non-pigmented colonies on Löwenstein-Jensen medium. Growth later develops a more yellowish, smooth, moist and shiny appearance.
Physiology
- Growth occurs at 30 and 37C, but not at 22, 42 or 45C.
- Grows on MacConkey agar without crystal violet, but does not grow in the presence
of 5% NaCl.
- Positive for arylsulfatase activity (3 days) and Tween 80 hydrolysis.
- Produces a low level of heatstable catalase and is negative for reduction of nitrates.
Differential characteristics
- The 16S rRNA and hsp65 gene sequences of M. canariasense are unique.
- Most closely related to Mycobacterium diernhoferiMycobacterium diernhoferiMycobacterium diernhoferi-Description:Gram-positive, nonmotile and acid-fast rods .Colony characteristics*White smooth and non-photochromogenic colonies.Physiology...
and Mycobacterium mucogenicumMycobacterium mucogenicumMycobacterium mucogenicumEtymology: mucogenicum, from the organism's highly mucoid appearance.-Description:Gram-positive, nonmotile, curved and acid-fast rods.Colony characteristics*Highly mucoid behavior of most strains on solid agar...
.
Pathogenesis
- First isolated from blood samples obtained from 17 patients with febrile syndrome in the Canary Islands.