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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
VALIDATION STUDIES
Development and validation of a multiplex PCR for detection of Scedosporium spp. in respiratory tract specimens from patients with cystic fibrosis.
Journal of Clinical Microbiology 2011 April
The emergence of Scedosporium infections in diverse groups of individuals, which are often treatment refractory, warrants timely and accurate laboratory diagnosis. Species- or group-specific primers based on internal transcribed spacer (ITS) sequence polymorphisms were designed for Scedosporium aurantiacum, Scedosporium dehoogii, Scedosporium prolificans, Pseudallescheria boydii species complex (former clade 5)/Pseudallescheria apiosperma (formerly classified as S. apiospermum sensu lato) and Pseudallescheria minutispora. Primers for S. aurantiacum, S. prolificans, and P. boydii species complex/P. apiosperma were incorporated into a multiplex PCR assay for the detection and identification of the three major clinically important Scedosporium species and validated using sputum specimens collected from patients seen at a major Australian cystic fibrosis clinic. The multiplex PCR assay showed 100% specificity in identifying the three major clinically relevant Scedosporium species from pure culture. When evaluated using DNA extracts from sputa, sensitivity and specificity of the multiplex PCR assay were 62.1% and 97.2%, respectively. This highly species-specific multiplex PCR assay offers a rapid and simple method of detection of the most clinically important Scedosporium species in respiratory tract specimens.
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