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Minerva Ginecologica 2016 February;68(1):37-42


lingua: Inglese

Effect of gonadal steroid receptors alterations on the pathophysiology of pelvic organ prolapse and urinary incontinence

Chralampos GRIGORIADIS 1, Dimitrios HASSIAKOS 1, Panagiotis BAKAS 1, Aliki TYMPA 2, Constantinos PANOULIS 1, Georgios CREATSAS 1, Agathi KONDI-PAFITI 3, Angelos LIAPIS 1

1 2nd Department of Obstetrics and Gynecology Medical School, University of Athens, Aretaieion Hospital, Athens, Greece; 2 1st Department of Anesthesiology, Medical School, University of Athens, Aretaieion Hospital, Athens, Greece; 3 Laboratory of Pathology Medical School, University of Athens, Aretaieion Hospital, Athens, Greece


BACKGROUND: The aim of this study was to investigate the contribution of the gonadal steroid receptors expression to the pathophysiological pathways of pelvic organ prolapse (POP) and urodynamic stress urinary incontinence (USUI) after menopause.
METHODS: This was a prospective closely-matched controlled clinicopathological study. Immunohistochemistry for estrogen receptor isoform α (ER-α) and β (ER-β), as well as for progesterone receptor (PR), was performed on formaline-fixed and paraffin-embedded sections of specimens coming from the pubocervical fascia of postmenopausal women who were allocated into three groups: patients with synchronous POP and USUI (Group A), patients diagnosed with only POP (Group B), and patients without POP or USUI who underwent gynecological surgery for another benign indication (control group, Group C).
RESULTS: There was no statistically significant difference among the three groups for age, parity, body mass index, or smoking. The expression of ER-α receptors was found significantly reduced among samples of Group B when compared with control group. Statistically significant reduction not only for ER-α, but for ER-β, as well, was noticed among samples of Group A, compared to the other two groups. No remarkable differences concerning the density of PR receptors were observed among the three groups.
CONCLUSIONS: Alterations of ER-α in the pubocervical fascia and around the urethra in postmenopausal women may play an important role in the pathophysiology of POP. In addition, the risk for developing USUI among POP patients seems to be strongly associated with the reduction of both estrogen receptors (ER-α and ER-β) expression.

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