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Isolation of Novel Mycobacterium Species from Skin Infection in an Immunocompromised Person.

ABSTRACT: We investigated a case of cutaneous infection in an immunocompromised patient in China that was caused by a novel species within the Mycobacterium gordonae complex. Results of whole-genome sequencing indicated that some strains considered to be M. gordonae complex are actually polyphyletic and should be designated as closely related species.

SUBMITTER: Mei YM

PROVIDER: S-EPMC8544998 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:IntroductionMycobacterium europaeum, a slow-growing nontuberculous mycobacteria belonging to the Mycobacterium simiae complex, was described after the seminal characterization of five isolates collected from three sputum specimens and a jaw gland biopsy in Italy, Greece and Sweden. Five respiratory tract isolates were further reported in Iran. Here, we report the first isolation of M. europaeum in France, in the respiratory tract of a patient co-infected with human immunodeficiency virus and hepatitis C virus.Case presentationA 49-year-old Caucasian woman with a 26-year history of human immunodeficiency virus-hepatitis C virus co-infection was admitted for significant influenza-like syndrome in a context of repetitive exacerbations of chronic obstructive pulmonary disease. Significant biological parameters included lymphocytes of 1.6G/L including 237/mm3 T4 lymphocytes, a human immunodeficiency virus viral load of 1.6 log and a hepatitis C virus viral load of 6 log. Reverse-transcriptase polymerase chain reaction of her nasopharyngeal aspiration confirmed influenza A H1N1. Three sputum specimens lacked acid-fast bacilli but one grew mycobacteria identified by using matrix-assisted laser desorption ionization/time-of-flight mass spectrometry as M. europaeum with a 1.56 log score. A 1,482-bp 16S ribosomal ribonucleic acid gene sequence yielded 99% similarity with both Mycobacterium parascrofulaceum ATCC BAA-614 and M. europaeum DSM 45397T and partial rpoB polymerase chain reaction-sequencing yielded a 725-bp sequence exhibiting 100% similarity with M. europaeum strain DSM 45397T.ConclusionsWe report the first isolation of M. europaeum in France, in the respiratory tract of a patient co-infected with human immunodeficiency virus and hepatitis C virus. M. europaeum warrants further attention in immunosuppressed patients with influenza, using matrix-assisted laser desorption ionization/time-of-flight mass spectrometry and rpoB partial sequencing as tools for its accurate identification.

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Isolation of Novel Mycobacterium Species from Skin Infection in an Immunocompromised Person.

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