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Altered distribution of mannose-binding lectin alleles at exon I codon 54 in women with vulvar vestibulitis syndrome
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2004 (English)In: American Journal of Obstetrics and Gynecology, ISSN 0002-9378, E-ISSN 1097-6868, Vol. 191, no 3, 762-766 p.Article in journal (Refereed) PublishedText
Abstract [en]

Objectives: Mannose-binding lectin (MBL) is active in the innate immune defense against microorganisms. In this study, we determined whether vulvar vestibulitis syndrome, a disorder of unknown etiology, was associated with an altered distribution of MBL alleles.

Study design: Buccal swabs were obtained from women with vulvar vestibulitis syndrome in New York (62) and from 2 cities in Sweden (60), as well as control women in New York (48) and Sweden (51). DNA was tested for a single nucleotide polymorphism at codon 54 in exon I by polymerase chain reaction, endonuclease digestion, and gel electrophoresis. Blood samples were also obtained from the New York women and tested by ELISA for plasma MBL concentrations. The relationships between genotype, allele frequencies, blood MBL levels, and diagnosis were analyzed by Fisher exact test and one-way analysis of variance.

Results: The variant MBL allele, MBL*B, was detected in 35.5% and 26.7% of vulvar vestibulitis patients from New York and Sweden, respectively. Only 12.5% of New York controls (P = .007) and 9.8% of Swedish controls (P = .01) were MBL*2-positive. All women, with one exception, who were positive for MBL*B were MBL*A/MBL*B heterozygotes. Women who carried MBL*B had almost a 10-fold reduction in median plasma MBL concentrations (278 ng/mL), as opposed to women who were MBL*A homozygotes (1980 ng/mL) (P < .0001).

Conclusion: MBL*B carriage and reduced plasma MBL levels are more common in women with vulvar vestibulitis syndrome than in control patients, and may contribute to symptomatology in a subset of patients.

Place, publisher, year, edition, pages
St Louis: Mosby , 2004. Vol. 191, no 3, 762-766 p.
Keyword [en]
vulvar vestibulitis syndrome, mannose-binding lectin, genetic polymorphism, innate immunity
National Category
Obstetrics, Gynecology and Reproductive Medicine
Identifiers
URN: urn:nbn:se:umu:diva-122154DOI: 10.1016/j.ajog.2004.03.073ISI: 000224326600013PubMedID: 15467537OAI: oai:DiVA.org:umu-122154DiVA: diva2:941416
Available from: 2016-06-22 Created: 2016-06-15 Last updated: 2016-06-22Bibliographically approved

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