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Use of PCR and reverse line blot hybridization assay for rapid simultaneous detection and serovar identification of Chlamydia trachomatis.

Abstract：

:The aim of this study was to develop and evaluate multiplex and nested PCR-reverse line blot (RLB) hybridization assays for detection and serovar identification of Chlamydia trachomatis. Two sets of primers targeting the VD2 region of the omp1 gene and one set targeting the cryptic plasmid were designed for use in multiplex (both targets) and nested PCR (omp1 only). For the RLB assay, labeled omp1 amplicons were hybridized to a membrane containing probes specific for 15 C. trachomatis serovars. The assays were used to test 429 clinical specimens, which had been previously tested for C. trachomatis using the COBAS AMPLICOR system. Specimens were tested without knowledge of the COBAS AMPLICOR result. Of 205 specimens that were positive by COBAS AMPLICOR, 201 (98%) were positive by multiplex PCR-RLB and 188 (92%) were also positive by omp1 nested PCR-RLB. In addition, three of 224 COBAS AMPLICOR-negative specimens were positive by omp1 nested PCR-RLB. One hundred sixty-six of 191 (87%) specimens in which C. trachomatis serovars were identified contained only one serovar and 25 (13%) contained two or three serovars. Serovars D, E, and F were found in 31 (16%), 83 (43%), and 51 (27%) specimens, respectively. Serovar E (41%) was the most commonly identified single serovar. Serovars J and K were found alone uncommonly (<2% each), but 18 of 25 (72%) specimens with multiple C. trachomatis serovars contained one or both (10 specimens) of these serovars. The nested (ompI) PCR-RLB is a specific and sensitive method for simultaneous detection and serovar identification of C. trachomatis, which can reliably identify mixed C. trachomatis serovars. It is suitable for use in epidemiological studies.

journal_name

J Clin Microbiol

journal_title

Journal of clinical microbiology

authors

Xiong L,Kong F,Zhou H,Gilbert GL

doi

10.1128/JCM.44.4.1413-1418.2006

subject

Has Abstract

pub_date

2006-04-01 00:00:00

pages

1413-8

issue

4

eissn

0095-1137

issn

1098-660X

pii

44/4/1413

journal_volume

44

pub_type

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