Histologic and receptor analysis of primary and secondary vestibulodynia and controls: a prospective study

Martha F. Goetsch, Terry K. Morgan, Veselina Korcheva, Hong Li, Dawn Peters, Catherine M. Leclair
In: American Journal of Obstetrics and Gynecology · 2010 · vol. 202(6) , pp. 614.e1–614.e8 · doi:10.1016/j.ajog.2010.01.028 · PMID:20430353 · W1987801318
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This prospective study analyzed the histologic features and receptor expression in vulvar tissue from women with primary vestibulodynia, secondary vestibulodynia, and healthy controls.

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Abstract

ObjectiveThe objective of the study was to assess the association between hormone receptor densities, pain nerves, and inflammation in vestibulodynia patients.Study designIn a prospective study, tender and nontender biopsies from 10 primary and 10 secondary vestibulodynia patients were compared with biopsies in 4 nontender controls. Hormone receptors were evaluated using immunohistochemistry for estrogen receptor-alpha and -beta, androgen, and progesterone receptors. Inflammation, nerves, and mast cells were assessed histologically. Statistical analysis was by Fisher's exact test, analysis of variance, paired Student t test, and Wilcoxon rank test.ResultsTender sites from primary vestibulodynia had increased nerve density compared with secondary and control biopsies (P = .01). Tender sites in secondary vestibulodynia had more lymphocytes than tender primary sites and control biopsies (P < .0001). Mast cells were increased in tender sites compared with nontender and controls. There were no differences in hormone receptor expression.ConclusionMarkers of inflammation differed between primary and secondary vestibulodynia and controls.

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