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S Guven

Publications and source records attributed to S Guven.

20 records · Page 2Linked to original sources

Recurrence of high-grade squamous intraepithelial neoplasia in neovagina: case report and review of the literature.

Recurrent carcinoma in situ in neovagina is rare, and the optimal modality of treatment is unclear. A 33-year-old multiparous woman was referred for vulvar intraepithelial neoplasia, vaginal intraepithelial neoplasia, and cervical intraepithelial neoplasia, underwent skinning vulvectomy with perianal excision, total vaginectomy, vaginal hysterectomy, and vaginal reconstruction with split-thickness skin graft. Ten years after initial surgery, the recurrence as a high-grade intraepithelial neoplasia in the upper one third of neovagina was detected. For that reason, the upper one third of vaginectomy with at least 5-mm tumor-free border and vaginal reconstruction with split-thickness skin graft were performed. She has attended her regular follow-up for 3 years with no evidence of disease. All patients with vaginoplasty should undergo regular follow-up. This report is the seventh such report in English literature of patients previously treated for in situ carcinoma who later developed recurrence in the graft.

Adult↗

The major integral membrane glycoprotein in adipocytes is a novel 200-kDa heterodimer.

The major glycoprotein in adipocytes was purified from rat adipocyte membranes by affinity chromatography with wheat germ agglutinin-agarose followed by DEAE-Sepharose ion exchange chromatography. The protein had an apparent molecular weight of 200-kDa when analysed by SDS-PAGE under non-reducing conditions. When electroeluted from the gel, boiled in the presence of beta-mercaptoethanol, and re-analysed by gel electrophoresis, it was found to be composed of 100- and 160-kDa subunits. The N-terminal sequences were determined through 20 amino acids for each subunit, were found to be identical, and were homologous with no previously described protein sequences. The protein was not extractable from the membrane by high salt concentrations, indicating it was an integral membrane protein. Membrane fractionation by differential ultracentrifugation showed it was present predominantly in the plasma membrane fraction. The protein was susceptible to cell surface radiolabelling, further suggesting it was a plasma membrane protein. In summary, the major membrane glycoprotein in adipocytes is a novel 200-kDa heterodimer whose disulfide-linked subunits possess identical N-terminal sequences.

Adipocytes↗