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Hum. Reprod. Advance Access originally published online on May 11, 2007
Human Reproduction 2007 22(7):1861-1865; doi:10.1093/humrep/dem107
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© The Author 2007. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Chlamydia trachomatis infection, Fallopian tube damage and a mannose-binding lectin codon 54 gene polymorphism

I. Sziller1,3, O. Babula2, A. Ujházy1, B. Nagy1, P. Hupuczi1, Z. Papp1, I.M. Linhares2, W.J. Ledger2 and S.S. Witkin2

1 First Department of Obstetrics and Gynecology, Faculty of Medicine, Semmelweis University, Baross utca 27, H-1088 Budapest, Hungary 2 Division of Immunology and Infectious Diseases, Department of Obstetrics and Gynecology, Weill Medical College of Cornell University, New York, NY, USA

3 Correspondence address. Tel: +36-1-266-04-73; Fax: +36-1-317-61-74; E-mail: sziller{at}noi1.sote.hu

BACKGROUND: Mannose-binding lectin (MBL), a component of the innate immune system, provides a first-line defense against invading microorganisms. Polymorphisms in the MBL gene have been associated with increased risk of infection. Chlamydia trachomatis genital tract infections are a major cause of Fallopian tube occlusion. Our objective was to test whether an MBL codon 54 polymorphism might contribute to development of C. trachomatis-associated tubal damage.

METHODS: In a case-control study, 97 women with occluded and 104 women with patent Fallopian tubes were tested for a history of chlamydial infection by serology and for their MBL codon 54 genotype by PCR and restriction fragment length polymorphism analysis. Clinical data were blinded to those performing all laboratory analyses.

RESULTS: Women with tubal occlusion who also had a positive chlamydial serology had the highest rate of variant MBL B allele carriage (P < 0.001). Among women who were chlamydial antibody negative, allele B carriage was also more frequent in those with blocked, as opposed to patent, Fallopian tubes (P < 0.01).

CONCLUSIONS: Wild-type allele A homozygosity is protective against, while carriage of the variant allele B is a risk factor for, Fallopian tube occlusion in women who are seropositive or seronegative for C. trachomatis.

Key words: Chlamydia trachomatis/gene polymorphism/mannose-binding lectin/serology/tubal occlusion


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