A cervical cancer tissue-derived decellularized extracellular matrix scaffold for cervical cancer tissue reconstruction in vitro / 南方医科大学学报

OBJECTIVE@#The prepare decellularized extracellular matrix (ECM) scaffold materials derived from human cervical carcinoma tissues for 3D culture of cervical carcinoma cells.@*METHODS@#Fresh human cervical carcinoma tissues were treated with sodium lauryl ether sulfate (SLES) solution to prepare decellularized ECM scaffolds. The scaffolds were examined for ECM microstructure and residual contents of key ECM components (collagen, glycosaminoglycan, and elastin) and genetic materials by pathological staining and biochemical content analysis. In vitro 3D culture models were established by injecting cultured cervical cancer cells into the prepared ECM scaffolds. The cells in the recellularized scaffolds were compared with those in a conventional 2D culture system for cell behaviors including migration, proliferation and epithelial-mesenchymal transition (EMT) wsing HE staining, immunohistochemical staining and molecular biological technology analysis. Resistance to 5-fluorouracil (5-Fu) of the cells in the two culture systems was tested by analyzing the cell apoptosis rates via flow cytometry.@*RESULTS@#SLES treatment effectively removed cells and genetic materials from human cervical carcinoma tissues but well preserved the microenvironment structure and biological activity of ECM. Compared with the 2D culture system, the 3D culture models significantly promoted proliferation, migration, EMT and 5-Fu resistance of human cervical cancer cells.@*CONCLUSION@#The decellularized ECM scaffolds prepared using human cervical carcinoma tissues provide the basis for construction of in vitro 3D culture models for human cervical cancer cells.

Analysis of risk factors of positive surgical margin and residual lesions after cone resection of high-grade intraepithelial neoplasia / 中国基层医药

Objective:To analyze the risk factors of positive surgical margin and residual lesions after cone resection of high-grade intraepithelial neoplasia, and to guide clinical work and follow-up.Methods:The clinical data of 180 patients with cervical epithelial neoplasia of grade Ⅱ and Ⅲ who underwent cervical conization in the People's Hospital of Inner Mongolia Autonomous Region from November 2013 to November 2018 were retrospectively analyzed.The risk factors associated with residual margin and reoperation (including re-cone and hysterectomy) after conization were performed by single factor and multivariate regression analysis.Results:The incidence of positive resection margins after conization was 31.67%(57/180), which of the residual margin of re-surgery was 36.84%(21/57). Menopause, contact bleeding, cervical cancer(in situ carcinoma, microinvasive carcinoma) were positive risk factors for conical cutting margin ( OR=2.342, 2.428, 8.949). Contact bleeding, cervical cancer(in situ carcinoma, microinvasive carcinoma) were risk factors for residual resection of the surgical margin after conization ( OR=5.370, 10.992). Conclusion:Contact bleeding, cervical carcinoma in situ, microinvasive carcinoma are closely related to cervical margin and lesion residual.Among them, menopause is also positively related to margin, which is a risk factor affecting cervical cone cutting margin and residual reoperation.It should be highly valued in clinical.