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Simultaneous detection and identification of Candida, Aspergillus, and Cryptococcus species by reverse line blot hybridization.

ABSTRACT: We report on a reverse line blot (RLB) assay, utilizing fungal species-specific oligonucleotide probes to hybridize with internal transcribed spacer 2 region sequences amplified using a nested panfungal PCR. Reference and clinical strains of 16 Candida species (116 strains), Cryptococcus neoformans (five strains of Cryptococcus neoformans var. neoformans, five strains of Cryptococcus neoformans var. grubii, and six strains of Cryptococcus gatti), and five Aspergillus species (68 strains) were all correctly identified by the RLB assay. Additional fungal species (16 species and 26 strains) not represented on the assay did not exhibit cross-hybridization with the oligonucleotide probes. In simulated clinical specimens, the sensitivity of the assay for Candida spp. and Aspergillus spp. was 10(0.5) cells/ml and 10(2) conidia/ml, respectively. This assay allows sensitive and specific simultaneous detection and identification of a broad range of fungal pathogens.

SUBMITTER: Playford EG 

PROVIDER: S-EPMC1393088 | biostudies-literature | 2006 Mar

REPOSITORIES: biostudies-literature

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Simultaneous detection and identification of Candida, Aspergillus, and Cryptococcus species by reverse line blot hybridization.

Playford E Geoffrey EG   Kong Fanrong F   Sun Ying Y   Wang Hui H   Halliday Catriona C   Sorrell Tania C TC  

Journal of clinical microbiology 20060301 3

We report on a reverse line blot (RLB) assay, utilizing fungal species-specific oligonucleotide probes to hybridize with internal transcribed spacer 2 region sequences amplified using a nested panfungal PCR. Reference and clinical strains of 16 Candida species (116 strains), Cryptococcus neoformans (five strains of Cryptococcus neoformans var. neoformans, five strains of Cryptococcus neoformans var. grubii, and six strains of Cryptococcus gatti), and five Aspergillus species (68 strains) were al  ...[more]

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