Publication: Use of MALDI-TOF MS for Identification of Nontuberculous Mycobacterium Species Isolated from Clinical Specimens.
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Date
2015
Authors
Mediavilla-Gradolph, María Concepción
De Toro-Peinado, Inmaculada
Bermúdez-Ruiz, María Pilar
García-Martínez, María de los Ángeles
Ortega-Torres, María
Montiel Quezel-Guerraz, Natalia
Palop-Borrás, Begoña
Advisors
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Publisher
Hindawi Publishing Corporation
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Abstract
The aim of this study was to compare the results obtained for identification by MALDI-TOF of nontuberculous mycobacteria (NTM) isolated in clinical samples with those obtained by GenoType Mycobacterium CM/AS (common mycobacteria/additional species). A total of 66 Mycobacterium isolates from various clinical specimens (mainly respiratory) were tested in this study. They were identified using MALDI-TOF Bruker from strains isolated in Lowenstein, following the recommended protocol of heat inactivation and extraction, and were simultaneously analyzed through hybridization by GenoType Mycobacterium from liquid culture MGIT. Our results showed that identification by MALDI-TOF was correct in 98.4% (65/66) of NTM isolated in our clinical practice (M. avium, M. intracellulare, M. abscessus, M. chelonae, M. fortuitum, M. mucogenicum, M. kansasii, and M. scrofulaceum). MALDI-TOF was found to be an accurate, rapid, and cost-effective system for identification of mycobacteria species.
Description
Journal Article;
MeSH Terms
Medical Subject Headings::Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans
Medical Subject Headings::Diseases::Bacterial Infections and Mycoses::Bacterial Infections::Gram-Positive Bacterial Infections::Actinomycetales Infections::Mycobacterium Infections::Mycobacterium Infections, Nontuberculous
Medical Subject Headings::Organisms::Bacteria::Gram-Positive Bacteria::Actinobacteria::Actinomycetales::Mycobacteriaceae::Mycobacterium::Nontuberculous Mycobacteria
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Chemistry Techniques, Analytical::Mass Spectrometry::Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
Medical Subject Headings::Phenomena and Processes::Genetic Phenomena::Genotype
Medical Subject Headings::Diseases::Bacterial Infections and Mycoses::Bacterial Infections::Gram-Positive Bacterial Infections::Actinomycetales Infections::Mycobacterium Infections::Mycobacterium Infections, Nontuberculous
Medical Subject Headings::Organisms::Bacteria::Gram-Positive Bacteria::Actinobacteria::Actinomycetales::Mycobacteriaceae::Mycobacterium::Nontuberculous Mycobacteria
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Chemistry Techniques, Analytical::Mass Spectrometry::Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
Medical Subject Headings::Phenomena and Processes::Genetic Phenomena::Genotype
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CIE Terms
Keywords
Humanos, Genotipo, Infecciones por micobacterias no tuberculosas, Micobacterias no tuberculosas, Espectrometría de masas con desorción-ionización láser asistida por matriz
Citation
Mediavilla-Gradolph MC, De Toro-Peinado I, Bermúdez-Ruiz MP, García-Martínez Mde L, Ortega-Torres M, Montiel Quezel-Guerraz N, et al. Use of MALDI-TOF MS for Identification of Nontuberculous Mycobacterium Species Isolated from Clinical Specimens. Biomed Res Int. 2015; 2015:854078