The British journal of dermatology · 2013
Development of a novel polymerase chain reaction-enzyme-linked immunosorbent assay for the diagnosis of Trichophyton rubrum onychomycosis.
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Pankewitz F, Nenoff P, Uhrlaß S, Bezold G, Winter I, Gräser Y
Аннотация
BACKGROUND: The prevalence of onychomycosis has increased steadily in the past decade. An accurate diagnosis at the outset is important for successful and cost-effective treatment of patients. However, current diagnostic tests for onychomycosis are not rapid, sensitive or specific.
OBJECTIVES: To develop a microsatellite-based polymerase chain reaction (PCR)-enzyme-linked immunosorbent assay (MS-ELISA) for the detection of Trichophyton rubrum, which is the most common aetiological agent of onychomycosis.
METHODS: An archival set of 434 nail and skin specimens from 217 patients was included as the test sample in this study. We also compared MS-ELISA with an earlier published topoisomerase PCR-ELISA (TI-ELISA) using template DNA extracted by another method.
RESULTS: The MS-ELISA detected the highest number of positive samples (69%) followed by direct microscopy (56%), TI-ELISA (44%) and fungal culture (30%). When an identical DNA extraction method was applied to 120 specimens, the MS-ELISA proved to be twice as sensitive as the TI-ELISA.
CONCLUSIONS: We have optimized a target gene and DNA extraction method for rapid detection of T. rubrum onychomycosis.
OBJECTIVES: To develop a microsatellite-based polymerase chain reaction (PCR)-enzyme-linked immunosorbent assay (MS-ELISA) for the detection of Trichophyton rubrum, which is the most common aetiological agent of onychomycosis.
METHODS: An archival set of 434 nail and skin specimens from 217 patients was included as the test sample in this study. We also compared MS-ELISA with an earlier published topoisomerase PCR-ELISA (TI-ELISA) using template DNA extracted by another method.
RESULTS: The MS-ELISA detected the highest number of positive samples (69%) followed by direct microscopy (56%), TI-ELISA (44%) and fungal culture (30%). When an identical DNA extraction method was applied to 120 specimens, the MS-ELISA proved to be twice as sensitive as the TI-ELISA.
CONCLUSIONS: We have optimized a target gene and DNA extraction method for rapid detection of T. rubrum onychomycosis.