The effect of hormonal status on the expression of estrogen and progesterone receptor in vaginal wall and periurethral tissue in urogynecological patients.

OBJECTIVE: Our objective was to study the expression of estrogen receptor (ER) isoforms ER alpha (α) and ER beta (ß) and of progesterone receptor (PR) in the vaginal wall and in periurethral tissue of women who underwent urogynecological surgical treatment with reference to estrogen status. STUDY DESIGN: The study included 89 patients undergoing vaginal surgery for urogynecological conditions. Patients' history and clinical data including estrogen status and body mass index (BMI) were evaluated. Biopsies from the vaginal wall and from periurethral tissue were obtained during surgery. The expression of ER α and ß and of PR in vaginal wall and periurethral tissue was measured by RT-PCR. RESULTS: Nine patients were premenopausal. Eighty women were menopausal, of whom 21 were taking estrogen/progestin replacement therapy (HRT), 20 used local estrogen, and 39 had no endocrine treatment. Neither BMI nor age had any influence on the expression of ER and PR. Menopausal women showed a higher amount of PR expression in vaginal tissue than premenopausal women. Women with no endocrine treatment showed a lower amount of ER ß expression in vaginal tissue. CONCLUSION: Steroid receptors are expressed in periurethral and vaginal tissue. The receptor expression varies with hormonal changes only in vaginal tissue. Vaginal tissue seems to be more sensitive to estrogen than periurethral tissue.

Isolation of fibroblasts for coating of meshes for reconstructive surgery: differences between mesh types.

AIMS: An extensive colonization of surgical meshes with autologous fibroblasts may reduce complications. Therefore, we aimed to establish a technique that allows isolation and propagation of fibroblasts from vaginal biopsies. Using these cells we tested the applicability of several clinically applied meshes for fibroblast coating. MATERIALS & METHODS: Fibroblasts were isolated from vaginal tissue after digestion with collagenase. Characterization was performed by immunostaining for cytokeratin 5, 6 and 14, smooth muscle actin and vimentin. A semiquantitative technique was applied to determine the degree of mesh coating 5 h and 5 weeks after seeding of fibroblasts. Seven meshes of different mesh types have been tested. RESULTS: Cells with a fibroblast-like morphology have been isolated from vaginal tissue and could be propagated for at least 12 passages, resulting in a total number of 1.2 x 10(7) cells. Immunostaining showed that cells were positive for the mesenchymal cell marker vimentin and negative for smooth muscle actin, as well as the epithelial cell markers cytokeratin 5, 6 and 14, supporting their classification as fibroblasts. Clear differences in fibroblast colonization between the seven tested mesh types have been observed. Polypropylene mesh Obtape showed an acceptable covering with fibroblasts. The best coating was obtained for xenograft-based meshes, but under cell-culture conditions the mesh showed signs of decomposition. CONCLUSION: We have established a technique that allows isolation and propagation of vaginal fibroblasts. The result of vaginal fibroblast colonization of allograft-based meshes strongly depends on the mesh type, whereby the best coating could be achieved for a polypropylene mesh.