Effectiveness of semi-open suturation of vaginal stump in prevent the development of pelvic lymphocele after pelvic lymphadenectomy / 中国实用妇科与产科杂志

OBJECTIVE: To evaluate the effectiveness of semi-open suturation of vaginal stump in preventing pelvic lym-phocele after pelvic lymphadenectomy during gynecologic cancer surgery.METHODS:This study is a retrospectivestudy.Totally 348 patients with cervic cancer or endometrial cancer who underwent pelvic lymphadenectomy and/or para-aortic lymphadenectomy from January 2012 to September 2018 were divided into two groups according to the suturationof vaginal stump:102 patients were in the semi-open group and 246 patients were in the closed group.The two groupswere compared concerning the surgery time,harvested lymph node,drainage time,albumin level,hemoglobin content,and the incidence of lymphocele and symptomatic lymphocele.RESULTS:There were no differences between two groupswith respect to surgery time,harvested lymph node,drainage time,albumin level or hemoglobin content(P>0.05).Theincidence of lymphocele and symptomatic lyphocele in semi-open group was significantly lower than that in closed group(35.3%versus79.3%,3.9%versus19.5%,P<0.05);the average diameter of lymphocele in semi-open group was also sig-nificantly lower than that in closed group(4.1cm versus 5.9cm,P<0.05).CONCLUSION:The result of this study indicatesthat the application of semi-open saturation of vaginal stump is an effective way to reduce the incidence of pelvic lym-phocele after gynecologic malignancy,which is simple and with reliable effect.It doesn′t increase the incidence of postop-eration complications and deserves clinical application.

Clinical evaluation of cervicectomy in the treatment of cervical intraepithelial neoplasia with cervicovaginal shortening / 中国实用妇科与产科杂志

OBJECTIVE: To investigate the clinical efficacy of cervicectomy for cervical intraepithelial neoplasia(CIN)in patients with cervicovaginal shortening.METHODS: Retrospectively analyze the clinical data of the 120 cases of CIN treated in Shengjing Hospital of China Medical University from April 2014 to November 2018.Cervicectomy was performed because of cervicovaginal shortening caused by menopausal or peri-menopausal cervical atrophy or cervical surgery.The clinical treatment,efficacy and prognosis of the patients were reviewed.RESULTS: The mean age of the 120 patients was 55.2 years(range:35-77 years).The indications of operation included:persistent abnormal cervical cytology test(7),CIN2(42),CIN3(70),squamous carcinoma of the cervix(1);peri-menopausal and menopausal patients with obvious cervicovaginal atrophy(100),premenopausal patients with natural short cervix(2),and obvious cervicovaginal shortening caused by cervical surgery(18).The mean operating time was 23.2 min(range 10-30 min),the mean bleeding volume was 7.8 mL(range:5-20 mL),and the mean height of cervix resected was 2.59 cm(range:2-3 cm).No secondary injury,bleeding or other postoperative complications occurred during surgery;cervical postoperative wounds healed well;only one case developed cervical adhesion after surgery.The postoperative histologic diagnosis were compared with the preoperative histologic diagnosis,in which 45 degraded(37.50%),42 consistent(35.00%),and 33 upgraded(27.50%).HPV conversion rate 3 months after cervicectomy was 80.81%(80/99),and total HPV conversion rate was 88.89%(88/99).A total of 29 patients underwent secondary surgery,23 underwent total hysterectomy,and 6 underwent extensive hysterectomy and pelvic lymphadenectomy.All patients were followed up,once every 3 to 6 months,and median follow-up time was 29.5 months(range 4-59 months).All patients recovered well after surgery;only 2 cases showed positive margins,and only 2 cases of residual disease and 1 case of recurrence were found during follow-up.CONCLUSION: For patients with cervical intraepithelial neoplasia of cervicovaginal shortening,cervicectomy is a safe,effective and relatively microinvasive treatment.

Whole Genome Expression Profiling Analysis of Metastasis and Drug-resistance-related Genes in Epithelial Ovarian Cancer Cells / 中国医学科学院学报

Objective To investigate the genes associated with higher ability of metastasis and chemotherapic resistance in epithelial ovarian carcinoma (EOC) by using Agilent whole genome oligonucleotide gene chip,with an attempt to further investigate the molecular mechanism of metastasis and chemotherapic resistance of EOC. Methods Oligonucleotide microarrays were used to determine whether gene expression profile might differentiate EOC cell lines (RMG-1-C,COC1 and HO8910) from their sub-lines (RMG-1-H,COC1/DDP and HO8910/PM) with higher ability of metastasis and chemotherapic resistance. Quantitative real-time polymerase chain reaction and immunohistochemical staining validated the microarray results. Results Gene expression profile identified 49 differentially expressed genes that showed≥2.0 fold change. All these differentially expressed genes were involved mainly in gene expression and biopolymer biosynthesis. Interaction network analysis predicted 21 genes participating in the regulatory connection. Highly differential expression of GCET2,CFTR,FOXP1 and GARS genes was validated by quantitative realtime polymerase chain reaction in all cell line samples,and the Results were consistent with microarray findings. Conclusion The change in the metastasis and chemotherapic resistance-associated gene expression profiles may provide a theoretical basis for studies on the molecular mechanisms of metastasis and chemotherapic resistance in EOC.

Effect of Lewis y antigen on regulating gene expression of partial drug resistance associated proteins in human ovarian cancer cell line RMG-I-H / 中国医学科学院学报

<p><b>OBJECTIVE</b>To investigate the influence of Lewis y antigen on the gene expression of partial drug resistance associated proteins in human ovarian cancer cell line RMG-I-H.</p><p><b>METHODS</b>RT-PCR was used to determine the gene expressions of partial drug resistance associated proteins in RMG-I-H cell line transfected with alpha1, 2-fucosyltransferases gene and RMG-I cell line, as well as in RMG-I-H treated with or without anti-Lewis y monoclonal antibody at the concentration of 10 micro/g/ml. The immunocytochemical method was used to detect the expression of P-glycoprotein (P-gp) in RMG-I and RMG-I-H cell lines. RMG-I and RMG-I-H cells were transplanted into nude mice and the expression of P-gp in the tissues was measured by immunohistochemistry.</p><p><b>RESULTS</b>The mRNA expressions of protein kinase C-alpha (PKC-alpha), topoismerase I ( Topo I ), multidrug resistance-associated protein-1 (MRP-1), and MRP-2 were significantly higher in RMG-I-H cells than those in RMG-I cells (0.46 +/- 0.02 vs. 0.27 +/- 0.05, 0.82 +/- 0.08 vs. 0.52 +/- 0.04, 0.66 +/- 0.07 vs. 0.34 +/- 0.12, and 0.44 +/- 0.08 vs. 0.23 +/- 0.05; all P < 0.05). However, the mRNA expression of multi-drug resistance 1 (MDR-1) was significantly lower in RMG-I-H cells than that in RMG-I cells (0.26 +/- 0.05 vs. 0.45 +/- 0.08, P < 0.05). The P-gp level increased in RMG-I-H cells compared with that in RMG-I cells both in vivo and in vitro (P < 0.05). Expressions of MDR-1, MRP-1, MRP-2, PKC-alpha, and Topo I mRNA decreased by the time in RMG-I-H cells treated with anti-Lewis y monoclonal antibody (all P < 0.05), while mRNA expressions of those genes in the control group did not statistically change (P > 0.05). In addition, MDR-1, MRP-1, MRP-2, PKC-alpha, and Topo I mRNA expressions were significantly lower in RMG-I-H cells treated with anti-Lewis y monoclonal antibody than those in the control group at 6 hours (all P < 0.05) and the inhibition ratios were 48.55%, 77.50%, 70.18%, 45.86%, and 46.13%, respectively.</p><p><b>CONCLUSION</b>The Lewis y antigen of the human ovarian cancer cell surface is closely correlated with the regulation on the gene expression of partial drug resistance associated proteins.</p>

Transfection of alpha1, 2-fucosyltransferase gene increases the antigenic expression of Lewis y in ovarian cancer cell line RMG-I / 中国医学科学院学报

<p><b>OBJECTIVE</b>To transfect human alpha1, 2-fucosyltransferase (alpha1, 2-FT) gene to ovarian cancer cell line RMG-I and investigate the antigenic expression change of Lewis y and the other related oligosaccharides.</p><p><b>METHODS</b>The expression vector pcDNA3.1(-)-HFUT-H was constructed by polymerase chain reaction (PCR) to clone human alpha1, 2-FT gene coding region. The alpha1, 2-FT gene stable high-expression cell line RMG-I-H was established by transfecting pcDNA3.1(-)-HFUT-H to ovarian cell line RMG-I. The change of alpha1, 2-FT activity in the cell line before and after the tranfection was confirmed by the determination of enzymatic activity. The changes of cell lipid and glucolipid, especially the change of type II oligosaccharide, in the cell line before and after the transfection was determined by Thin-Layer Chromatography (TLC) and TLC immunostaining method, respectively.</p><p><b>RESULTS</b>The H-1 antigen and Lewis y antigen were obviously increased in the cell line RMG-1-H, especially the latter one, which was 20 times higher than before, and the type I saccharide chain Lewis b was decreased significantly. The main lipid components on the cell membrane, cholesterol and phosphatides, showed no change in the cell lines before and after the transfection, and the neutral glycolipid also showed no obvious change.</p><p><b>CONCLUSIONS</b>The transfection of alpha1, 2-FT gene can increase the activity of alpha1, 2-FT in the cell line RMG-I and mainly increase the expression of Lewis y antigen simultaneously. The construction of RMG-I Lewis y high expression cell line provides a cell model for further study on the relationship between Lewis y antigen and biological behaviors in the ovarian cancer.</p>