Detection of Chlamydia trachomatis by the polymerase chain reaction in the cervices of women with acute salpingitis.
Academic Article
Overview
abstract
OBJECTIVE: Our objective was to determine whether an increased prevalence of Chlamydia trachomatis could be detected by the polymerase chain reaction as opposed to culture in the cervices of women with acute salpingitis. STUDY DESIGN: Endocervical samples from 15 women with laparoscopy-verified acute salpingitis and 20 women seeking medical help for conditions other than pelvic pain were tested for Chlamydia trachomatis with the polymerase chain reaction. The oligonucleotide primer pairs used were specific for a 144 bp region of the major outer membrane protein that contained a single EcoRI endonuclease cleavage site. The detection of a 144 bp band that was cleaved by EcoRI to a 103 bp band denoted a Chlamydia trachomatis-positive sample. Cervical samples were cultured for Chlamydia trachomatis with the use of McCoy cells. The lymphocyte proliferative response to Chlamydia trachomatis elementary bodies was also determined. RESULTS: Nine of the 15 women (60%) with salpingitis had positive results when tested with the polymerase chain reaction for cervical Chlamydia trachomatis. Only two of these women (13%), both of whom had positive results when tested with the polymerase chain reaction, had cultures that were positive for Chlamydia trachomatis (p < 0.02). Among the 20 other women, only two patients with cervicitis had positive cultures for Chlamydia. Those women plus two women with unexplained recurrent abortions had positive polymerase chain reaction test results for Chlamydia trachomatis. A lymphocyte proliferative response to Chlamydia trachomatis was detected in five of eight women with salpingitis, as well as three of the other four patients, all of whom had positive polymerase chain reaction test results; lymphocytes from the remaining women were unresponsive. Follow-up cervical samples were obtained 4 to 6 months after treatment from six of the patients with salpingitis who had positive polymerase chain reaction test results; at that time five had negative polymerase chain reaction test results for Chlamydia trachomatis. CONCLUSION: The polymerase chain reaction appeared to be more sensitive and more rapid than culture in detecting Chlamydia trachomatis in the cervices of women with acute salpingitis. This assay may be of value for the early diagnosis of chlamydial infections.
