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© Research
Publication : Environmental microbiology

Human-impacted areas of France are environmental reservoirs of the Pseudallescheria boydii/Scedosporium apiospermum species complex

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Environmental microbiology - 28 Apr 2014

Rougeron A, Schuliar G, Leto J, Sitterlé E, Landry D, Bougnoux ME, Kobi A, Bouchara JP, Giraud S

Link to Pubmed [PMID] – 24684308

Environ. Microbiol. 2015 Apr;17(4):1039-48

Species of the Pseudallescheria boydii/Scedosporium apiospermum complex (PSC) are emerging fungal pathogens able to chronically colonize the airways of patients with cystic fibrosis (CF). As P. boydii was found more frequently colonizing the lungs of CF patients in France than in other European countries in a previous report, the present study was conducted in order to clarify distribution of PSC species in France and to characterize their natural habitat. The highest densities of PSC isolates were found in human-impacted areas, i.e. agricultural areas, fluids obtained from wastewater treatment plants, playgrounds and industrial areas. PSC was not detected from soil samples collected in forests. Most PSC culture-positive soil samples exhibited a pH range of 6-8. Scedosporium dehoogii, the most abundant species, was detected in all human-impacted area types except vineyards, whereas Scedosporium aurantiacum was mostly found in agricultural areas. Pseudallescheria boydii and S. apiospermum were predominantly isolated from seashores and playgrounds respectively. Pseudallescheria minutispora was found only once from a playground. This study highlights potential sources of contamination of the patients, especially in the CF context.

http://www.ncbi.nlm.nih.gov/pubmed/24684308