Introduction: Diagnosis of atypical mycobacterial infections can be facilitated by molecular biology techniques.
Cases: Two severely immunodepressed patients were admitted for deterioration of their general health status. Bacteriological analysis of histopathologic fragments showed the presence of acid- and alcohol-resistant bacilli. INNO-LiPA MYCOBACTERIA Amplification v2 made it possible to diagnose Mycobacterium genavense infection.
Comments: M. genavense is a slow-growing atypical mycobacterium. The molecular biology techniques used by INNO-LiPA MYCOBACTERIA V2 permit its swift identification.
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http://dx.doi.org/10.1016/s0755-4982(06)74734-0 | DOI Listing |
BMC Infect Dis
November 2019
Department of infectious Diseases, Rigshospitalet, Copenhagen, Denmark.
Background: Nontuberculous mycobacteria belonging to the Mycobacterium avium complex are recognized as opportunistic pathogens to humans. Mycobacterium arosiense is one of the novel members of the Mycobacterium avium complex. The organism has only rarely been reported in human clinical cases and may be routinely misidentified.
View Article and Find Full Text PDFDiagn Microbiol Infect Dis
November 2019
Department of Medical Microbiology, University Medical Center Utrecht, 3508, GA, Utrecht, The Netherlands.
Seven weeks after being kicked in the face by a cow, a 34-year-old male patient developed a posttraumatic mycobacterial lymphadenitis. A rapidly growing mycobacterial isolate cultured from a surgically drained lymphadenitis pus specimen was identified as Mycobacterium smegmatis by matrix-assisted laser desorption/ionization mass spectrometry and a combination of ITS-, hsp65-, and 16S rRNA-DNA sequence analysis, but as Mycobacterium fortuitum complex using the commercial INNO-LiPA Mycobacteria v2 line probe assay. As it is unclear if the misidentification of this strain is an exception, more research is required.
View Article and Find Full Text PDFMed Princ Pract
June 2020
Department of Microbiology, Faculty of Medicine, Kuwait University, Safat, Kuwait.
Objective: Nontuberculous mycobacteria (NTM) often cause disease that is clinically indistinguishable from tuberculosis. Specific identification is important as treatment varies according to Mycobacterium species causing the infection. This study used multiplex PCR (mPCR) assay for rapid differentiation of mycobacterial growth indicator tube 960 system (MGIT) cultures as Mycobacterium tuberculosis (MTB) or NTM together with INNO LiPA Mycobacteria v2 assay (LiPA) and/or PCR sequencing of rDNA for species-specific identification of selected MTB and all NTM isolates in Kuwait.
View Article and Find Full Text PDFClin Microbiol Infect
April 2018
National Reference Center for Mycobacteria and Antimycobacterial Resistance, Paris, France.
Objectives: Mycobacterium chimaera is a recently described nontuberculous mycobacterium belonging to the Mycobacterium avium complex (MAC). Because this species is implicated in a worldwide outbreak due to contaminated heater-cooler unit water tanks during open-heart surgery, it has become mandatory for clinical microbiology laboratories to be able to differentiate M. chimaera from the other MAC species, especially M.
View Article and Find Full Text PDFFront Microbiol
May 2017
Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, Universidade Federal de São PauloSão Paulo, Brazil.
Isolates of the - complex are subdivided into four clusters (CHI to CHIV) in the INNO-LiPA® spp DNA strip assay. A considerable phenotypic variability was observed among isolates of the CHII cluster. In this study, we examined the diversity of 26 CHII cluster isolates by phenotypic analysis, drug susceptibility testing, whole genome sequencing and single-gene analysis.
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