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The prevalence of Chlamydia trachomatis in fresh tissue specimens from patients with ectopic pregnancy or tubal factor infertility as determined by PCR and in-situ hybridisation

RACHAEL E. L. BARLOW, IAN D. COOKE^*, OLUSEGUN ODUKOYA^*, MARK K. HEATLEY, JULIAN JENKINS, GORDON NARAYANSINGH, SAMUEL S. RAMSEWAK and ADRIAN ELEY

Division of Genomic Medicine, University of Sheffield Medical School, Floor F, Sheffield S10 2RX, *Department of Obstetrics and Gynaecology, Divison of Surgical and Anaesthetic Sciences, University of Sheffield Medical School, Sheffield, Department of Pathology, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, Division of Obstetrics and Gynaecology, Department of Hospital Medicine, University of Bristol, Bristol, UK and Department of Clinical Surgical Sciences, University of the West Indies, St Augustine, Trinidad

Corresponding author: Dr A. Eley (e-mail: a.r.eley{at}sheffield.ac.uk).

Received 3 Oct. 2000; revised version received 6 April 2001; accepted 18 April 2001.

Abstract

The prevalence of chlamydial DNA determined by PCR and in-situ hybridisation (ISH) in fresh tissue specimens (endometrium, fallopian tube and ovary) was investigated in 33 women presenting with ectopic pregnancy (EP), 14 women with tubal factor infertility (TFI) and 50 control patients from the UK and the West Indies. In the UK EP group, chlamydial DNA was detected by PCR in 56% of patients; similar results were found in the Trinidad EP group (67%). In the TFI group, chlamydial DNA was detected in (71%) of patients by PCR. The detection of Chlamydia trachomatis DNA by ISH was highest in the TFI group (43%). Women presenting with EP and TFI showed evidence of previous or current genital C. trachomatis infection, underlining the importance of this micro-organism in the development of these conditions. Importantly, chlamydial DNA could be detected in DNA preparations from the endometrium, fallopian tube and ovary of EP and TFI patients at the time of surgery.

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