Association between Antibody to the Chlamydial Heat-Shock Protein and Tubal Infertility

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Abstract
To determine the prevalence of antibody to Chlamydia heat-shock protein 60 (C-hsp60) in women with tubal infertility, an ELISA using purified recombinant C-hsp60 was developed. Antibody to C. trachomatis was present in 32 (72.7%) of 44 women with tubal infertility compared with 9 (32.1%) of28 with other causes of infertility and 55 (28.9%) of 190 pregnant women (P < .001). Among the seropositive women, antibody to C-hsp60 was present in 26 (81.3%) of 32 women with tubal infertility compared with 0 of9 with other causes of infertility and 9 (16.4%) of 55 pregnant women (P < .001). The C-hsp60 ELISA detected Chlamydia-associated tubal infertility in infertile women with a sensitivity of 81.3% and a specificity of 97.5%. There is a strong association between antibody response to the C-hsp60 and the development of Chlamydia-associated tubal infertility. Thus, a C-hsp60 ELISA may be useful as a predictor for poor fertility outcome.

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