PMID- 25444360 OWN - NLM STAT- MEDLINE DCOM- 20170327 LR - 20191210 IS - 1578-1852 (Electronic) IS - 0213-005X (Linking) VI - 33 IP - 6 DP - 2015 Jun-Jul TI - [Evaluation of mass spectrometry for the identification of clinically interesting yeasts]. PG - 372-8 LID - S0213-005X(14)00340-1 [pii] LID - 10.1016/j.eimc.2014.10.003 [doi] AB - INTRODUCTION: Identification of yeasts is based on morphological, biochemical and nutritional characteristics, and using molecular methods. Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry, a new method for the identification of microorganisms, has demonstrated to be very useful. The aim of this study is to evaluate this new method in the identification of yeasts. METHODS: A total of 600 strains of yeasts isolated from clinical specimens belonging to 9 genera and 43 species were tested. Identification was made by sequencing of the ITS regions of ribosomal DNA, assimilation of carbon compounds (ID 32C), and mass spectrometry on a Microflex spectrometer (Bruker Daltonics GmbH, Germany). RESULTS: A total of 569 strains (94.8%) were identified to species level by ID 32C, and 580 (96.7%) by MALDI-TOF. Concordance between both methods was observed for 553 strains (92.2%), with 100% in clinically relevant species: C. albicans, C. glabrata, C. parapsilosis, C. tropicalis, and almost 100% in C. krusei. MALDI-TOF identified species requiring molecular methods: Candida dubliniensis, C. nivariensis, C. metapsilosis and C. orthopsilosis. Some irregularities were observed in the identification of arthroconidia yeast and basidiomycetes. CONCLUSION: MALDI-TOF is a rapid, effective and economic method, which enables the identification of most clinically important yeasts and the differentiation of closely related species. It would be desirable to include more species in its database to expand its performance. CI - Copyright (c) 2014 Elsevier Espana, S.L.U. y Sociedad Espanola de Enfermedades Infecciosas y Microbiologia Clinica. All rights reserved. FAU - Galan, Fatima AU - Galan F AD - Servicio de Microbiologia, Hospital Puerta del Mar, Cadiz, Espana. FAU - Garcia-Agudo, Lidia AU - Garcia-Agudo L AD - Servicio de Microbiologia, Hospital Virgen de la Salud, Toledo, Espana. FAU - Guerrero, Inmaculada AU - Guerrero I AD - Servicio de Microbiologia, Hospital Puerta del Mar, Cadiz, Espana. FAU - Marin, Pilar AU - Marin P AD - Servicio de Microbiologia, Hospital Puerta del Mar, Cadiz, Espana. FAU - Garcia-Tapia, Ana AU - Garcia-Tapia A AD - Servicio de Microbiologia, Hospital Puerta del Mar, Cadiz, Espana. FAU - Garcia-Martos, Pedro AU - Garcia-Martos P AD - Servicio de Microbiologia, Hospital Puerta del Mar, Cadiz, Espana. Electronic address: pedromartos@hotmail.com. FAU - Rodriguez-Iglesias, Manuel AU - Rodriguez-Iglesias M AD - Servicio de Microbiologia, Hospital Puerta del Mar, Cadiz, Espana. LA - spa PT - Evaluation Study PT - Journal Article TT - Evaluacion de la espectrometria de masas en la identificacion de levaduras de interes clinico. DEP - 20141129 PL - Spain TA - Enferm Infecc Microbiol Clin JT - Enfermedades infecciosas y microbiologia clinica JID - 9104081 RN - 0 (Carbon Isotopes) RN - 0 (DNA, Fungal) RN - 0 (DNA, Ribosomal Spacer) SB - IM MH - Candida/classification/isolation & purification MH - Carbon Isotopes/metabolism MH - DNA, Fungal/analysis MH - DNA, Ribosomal Spacer MH - Humans MH - Mycological Typing Techniques/*methods MH - Mycoses/*microbiology MH - Reproducibility of Results MH - Species Specificity MH - Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization/methods MH - Yeasts/classification/*isolation & purification/metabolism OTO - NOTNLM OT - Candida OT - Espectrometria de masas MALDI-TOF OT - Levaduras OT - Levaduras de interes clinico OT - MALDI-TOF mass spectrometry OT - Medically-important yeasts OT - Yeasts EDAT- 2014/12/03 06:00 MHDA- 2017/03/28 06:00 CRDT- 2014/12/03 06:00 PHST- 2014/03/11 00:00 [received] PHST- 2014/07/29 00:00 [revised] PHST- 2014/10/01 00:00 [accepted] PHST- 2014/12/03 06:00 [entrez] PHST- 2014/12/03 06:00 [pubmed] PHST- 2017/03/28 06:00 [medline] AID - S0213-005X(14)00340-1 [pii] AID - 10.1016/j.eimc.2014.10.003 [doi] PST - ppublish SO - Enferm Infecc Microbiol Clin. 2015 Jun-Jul;33(6):372-8. doi: 10.1016/j.eimc.2014.10.003. Epub 2014 Nov 29.