Salpingectomy increases peri-implantation endometrial HOXA10 expression in women with hydrosalpinx

Gaurang S. Daftary, Umit A. Kayisli, Emre Seli, Orhan Bükülmez, Aydın Arıcı, Hugh S. Taylor
In: Fertility and Sterility · 2006 · vol. 87(2) , pp. 367–372 · doi:10.1016/j.fertnstert.2006.06.041 · PMID:17173899 · W2096074951
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Salpingectomy was shown to increase peri-implantation endometrial HOXA10 expression in women diagnosed with hydrosalpinx.

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Abstract

ObjectiveTo determine whether women with hydrosalpinx would have diminished endometrial HOXA10 expression and whether salpingectomy would reverse HOXA10 suppression. The homeobox gene HOXA10 is a transcription factor that is necessary for embryo implantation; its expression in human endometrium correlates with receptivity and implantation. Increased endometrial HOXA10 expression may be one mechanism by which salpingectomy results in increased implantation rates in IVF.DesignProspective clinical trial.SettingAcademic medical center.Patient(s)Women with unilateral or bilateral hydrosalpinx.Intervention(s)Expression of HOXA10 was examined prospectively during the midluteal phase in endometrium obtained from infertile women (n = 9) with hydrosalpinges before and after salpingectomy, as well as from fertile controls (n = 6). Quantitative HOXA10 mRNA expression was determined by real-time reverse-transcription polymerase chain reaction, and HOXA10 protein expression was determined by immunohistochemistry.Main outcome measure(s)Expression of HOXA10 mRNA and protein.Result(s)Expression of HOXA10 mRNA was significantly lower in infertile women with hydrosalpinges, compared with the case of fertile controls. Salpingectomy resulted in a statistically significant, 15-fold increase in endometrial HOXA10 expression. Immunohistochemical analysis confirmed the quantitative real-time reverse-transcription polymerase chain reaction findings. Increased HOXA10 expression was evident in both glandular epithelial cells and endometrial stroma.Conclusion(s)HOXA10 is necessary for implantation. Here, we demonstrate decreased HOXA10 expression in response to hydrosalpinx fluid as a potential molecular mechanism for diminished implantation rates. Salpingectomy restores endometrial HOXA10 expression. This may be one mechanism by which salpingectomy results in augmented implantation rates in IVF.

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