Mouhajir, A. and Matray, O. and Giraud, S. and Mély, L. and Marguet, C. and Sermet-Gaudelus, I. and Le Gal, S. and Labbé, F. and Person, C. and Troussier, F. and Ballet, J.-J. and Gargala, G. and Zouhair, R. and Bougnoux, M.-E. and Bouchara, J.-P. and Favennec, L. (2016) Long-term rasamsonia argillacea complex species colonization revealed by PCR amplification of repetitive DNA sequences in cystic fibrosis patients. Journal of Clinical Microbiology, 54 (11). pp. 2804-2812.

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Abstract

The aim of this work was to document molecular epidemiology of Rasamsonia argillacea species complex isolates from cystic fibrosis (CF) patients. In this work, 116 isolates belonging to this species complex and collected from 26 CF patients and one patient with chronic granulomatous disease were characterized using PCR amplification assays of repetitive DNA sequences and electrophoretic separation of amplicons (rep-PCR). Data revealed a clustering consistent with molecular species identification. A single species was recovered from most patients. Rasamsonia aegroticola was the most common species, followed by R. argillacea sensu stricto and R. piperina, while R. eburnea was not identified. Of 29 genotypes, 7 were shared by distinct patients while 22 were patient specific. In each clinical sample, most isolates exhibited an identical genotype. Genotyping of isolates recovered from sequential samples from the same patient confirmed the capability of R. aegroticola and R. argillacea isolates to chronically colonize the airways. A unique genotype was recovered from two siblings during a 6-month period. In the other cases, a largely dominant genotype was detected. Present results which support the use of rep-PCR for both identification and genotyping for the R. argillacea species complex provide the first molecular evidence of chronic airway colonization by these fungi in CF patients. Copyright © 2016, American Society for Microbiology. All Rights Reserved.

Item Type: Article
Uncontrolled Keywords: airway; Article; chronic granulomatous disease; clinical article; controlled study; cystic fibrosis; DNA sequence; electrophoresis; fungal colonization; fungus; fungus identification; fungus isolation; gene amplification; genotype; human; molecular epidemiology; nonhuman; polymerase chain reaction; priority journal; Rasamsonia aegroticola; Rasamsonia argillacea; Rasamsonia eburnea; Rasamsonia piperina; sibling; species identification; classification; cluster analysis; complication; cystic fibrosis; Eurotiales; genetics; isolation and purification; microbiological examination; microbiology; Mycoses; nucleotide repeat; procedures, Cluster Analysis; Cystic Fibrosis; Electrophoresis; Eurotiales; Genotype; Humans; Microbiological Techniques; Molecular Epidemiology; Mycoses; Polymerase Chain Reaction; Repetitive Sequences, Nucleic Acid
Subjects: Medicine
Divisions: SCIENTIFIC PRODUCTION > Medicine
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:49
URI: http://eprints.umi.ac.ma/id/eprint/4308

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