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Mycobacterium massiliense bacteremia as a consequence of M. massiliense pneumonia in a patient with acute lymphoblastic leukemia.

ABSTRACT: A 52-year-old woman with relapsed acute lymphoblastic leukemia was diagnosed with Mycobacterium massiliense pneumonia after 4 months of chemotherapy. She developed M. massiliense bacteremia 1 month later. This is the first report of a proven case of M. massiliense bacteremia as a consequence of M. massiliense pneumonia.

SUBMITTER: Kim J

PROVIDER: S-EPMC4042761 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature

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Mycobacterium massiliense bacteremia as a consequence of M. massiliense pneumonia in a patient with acute lymphoblastic leukemia.

Kim Jaewook J Park Jeong Su JS Jeong Yun Sil YS Kim Dae-Young DY Sung Heungsup H Kim Mi-Na MN

Journal of clinical microbiology 20140319 6

A 52-year-old woman with relapsed acute lymphoblastic leukemia was diagnosed with Mycobacterium massiliense pneumonia after 4 months of chemotherapy. She developed M. massiliense bacteremia 1 month later. This is the first report of a proven case of M. massiliense bacteremia as a consequence of M. massiliense pneumonia. ...[more]

PMID: 24648551

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Project description:A nonphotochromogenic, rapidly growing Mycobacterium strain was isolated in pure culture from the sputum and the bronchoalveolar fluid of a patient with hemoptoic pneumonia by using axenic media and an amoebal coculture system. Both isolates grew in less than 7 days at 24 to 37 degrees C with an optimal growth temperature of 30 degrees C. The isolates exhibited biochemical and antimicrobial susceptibility profiles overlapping those of Mycobacterium abscessus, Mycobacterium chelonae, and Mycobacterium immunogenum, indicating that they belonged to M. chelonae-M. abscessus group. They differed from M. abscessus in beta-galactosidase, beta-N-acetyl-beta-glucosaminidase, and beta-glucuronidase activities and by the lack of nitrate reductase and indole production activities, as well as in their in vitro susceptibilities to minocycline and doxycycline. These isolates and M. abscessus differed from M. chelonae and M. immunogenum by exhibiting gelatinase and tryptophane desaminase activities. Their 16S rRNA genes had complete sequence identity with that of M. abscessus and >99.6% similarity with those of M. chelonae and M. immunogenum. Further molecular investigations showed that partial hsp65 and sodA gene sequences differed from that of M. abscessus by five and three positions over 441 bp, respectively. Partial rpoB and recA gene sequence analyses showed 96 and 98% similarities with M. abscessus, respectively. Similarly, 16S-23S rRNA internal transcribed spacer sequence of the isolates differed from that of M. abscessus by a A-->G substitution at position 60 and a C insertion at position 102. Phenotypic and genotypic features of these two isolates indicated that they were representative of a new mycobacterial species within the M. chelonae-M. abscessus group. Phylogenetic analysis suggested that these isolates were perhaps recently derived from M. abscessus. We propose the name of "Mycobacterium massiliense" for this new species. The type strain has been deposited in the Collection Institut Pasteur as CIP 108297(T) and in Culture Collection of the University of Goteborg, Goteborg, Sweden, as CCUG 48898(T).

Dataset Information

Mycobacterium massiliense bacteremia as a consequence of M. massiliense pneumonia in a patient with acute lymphoblastic leukemia.

Publications

Mycobacterium massiliense bacteremia as a consequence of M. massiliense pneumonia in a patient with acute lymphoblastic leukemia.

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