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  • Title: Comparison of three in-house multiplex PCR assays for the detection of Neisseria gonorrhoeae and Chlamydia trachomatis using real-time and conventional detection methodologies.
    Author: Whiley DM, Sloots TP.
    Journal: Pathology; 2005 Oct; 37(5):364-70. PubMed ID: 16194847.
    Abstract:
    AIMS: To develop and evaluate multiplex PCR assays for Chlamydia trachomatis and Neisseria gonorrhoeae, using real-time and conventional PCR detection methodologies. METHODS: Two real-time multiplex PCR assays, using nuclease (TaqMan-ABI7500) and hybridisation (LightCycler) probe formats, and a third assay using conventional PCR with solid-phase hybridisation and colour detection, were developed. The porA pseudogene was targeted for N. gonorrhoeae, and the major outer membrane protein gene for C. trachomatis. A total of 145 urogenital specimens were tested in all assays, and the results were compared with the Roche Cobas Amplicor assay. RESULTS: There was little difference in clinical sensitivity and specificity, result discrimination and test cost for the three in-house assays. Our results showed that competitive inhibition of the PCR occurred in some samples that were positive for both organisms. CONCLUSIONS: These results highlight the suitability and versatility of three multiplex PCR methods for the detection of C. trachomatis and N. gonorrhoeae.
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