Accuracy of Intraoperative Frozen Section in the Diagnosis of Ovarian Neoplasms

Objective: The aim of the work is to evaluate the accuracy of intraoperative frozen section in the diagnosis of ovarian neoplasms in Zagazig University. Design: A prospective cross sectional cohort study. Method: This study was performed between March 2011 and March 2012, on 50 patients presented with ovarian mass. Gross examination of the tumor removed was done by inspection and palpation. The specimen was then cut with a sharp knife into two halves. The most appropriate area thought to be representative of lesion was chosen. The number of sections frozen was depended on the type and size of the tumor. Seven to eight μm sections were obtained and stained with hematoxylin-eosin. The specimens were then fixed in formalin. Paraffin blocks of the sections were processed in the routine way and sections were stained with hematoxylin and eosin (H and E). The diagnosis obtained by intraoperative frozen section based on cellularity and cell morphology was compared with final histopathological diagnosis in terms of diagnostic sensitivity, to differentiate between benign and malignant lesions. Assessment of the overall accuracy of the intraoperative diagnosis was classified as concordant or discordant. Results: There was no statisticaly significant differencre in the studied patients as regard the clinical data, macroscopic and intraoperative picture, while there was statisticaly significat association as regard the laterality of the ovarian masses. The validity of frozen section in the diagnosis of benign tumour was 100% with 100% accuracy, specificity, positive predictive value, negative predictive value, while sensitivity & negative prediction for borderline tumour and specificity & positive prediction of malignant tumour were 100%, specifecity for borderline tumours was 95% while the positive predictive value was 33.3% with 96% accuracy for both malignant and borderline tumours. Conclusion: Intraoperative frozen section is accurate for rapid diagnosis of ovarian tumors. It can help surgeons avoid under-treatment or overtreatment of patients. Our study was designed prospectively using a small number of patients. The door is open to larger studies using a larger number of patients to be performed in order to substantiate our results.

Expression and significance of tumor suppressor gene p16 in human ovarian neoplasm

To observe the relationship between tumor suppressor gene p16 expression and ovarian cancer occurrence and development. Metbods: Using ABC immunohistochemistry method, we investigated the expression of p16 in 72 cases of ovarian neoplasm. Results: The positive rates of p16 in malignant, benign, borderline tumors and normal ovarian tissue were 7. 89%, 60.00%, 66. 67% and 83. 33%, respectively (P<0.01). In the cases whose tumors were more malignant and poorly differentiated, and who relapsed and died, the positive stainings were not discovered. Conclusiou: p16 is well related with the occurrence and development of malignant ovarian tumor.

The diagnostic value of multiple tumor markers in malignantovarian neoplasms

Objective:To study the diagnostic value of multiple tumor markers in malignant ovarian neoplasm.Methods:Sera obtained from 430 patients with ovarian masses (110 cases were malignant ovarian tumors,320 cases were benign ovarian tumors) before operation,and from 50 healthy women as control.Serologic examination of tumor markers included CA125,TSGF,SA,CEA,AFP,HCG and Fer.Results:The serum levels of CA125,TSGF,SA and Fer in patients with ovarian cancer were higher than those in patients with benign ovarian tumors (P<0.05),also in control group (P<0.05).In the diagnostic value of application for malignant ovarian neoplasm,CA125,TSGF and SA were better than the others.The sensitivity,specificity and accuracy in diagnosis of ovarian cancer were 86.4%,82.8%and 83.7% respectively for CA125 alone,78.2%,81.3%and 80.5% for TSGF alone,74.5%,81.9%and 80.0% for SA alone,whereas 95.5%,45.6%and 58.4% for multiple tumor markers combined in which 1 or more indices showed positive,93.6%,80.6%and 84.0% for that in which 2 or more indices showed positive,and 87.3%,90.3%and 89.5% for that in which 3 or more indices show positive.Conclusion:multiple tumor markers examination could improve the diagnosis of ovarian cancer,and examination of CA125,TSGF and SA combined is most ideal.

The Relationship between Methylation and Expression Defect of Tumor Suppressor Gene p16INK4A in Epithelial Ovarian Cancer

Objective： To evaluate the expression of p16INK4A gene in ovarian cancer and analyze the relation between this alteration and the promoter methylation of p16INK4A DNA. Methods： Seven ovarian cancer cell lines and eighteen ovarian cancer specimens were selected for the study. Genomic DNA and RNA were extracted from fresh tissues and cell lines, DNA was treated with sodium bisulfite and then analyzed with methylation-specific PCR （MSP） to detect p16INK4A methylation. The expression of p16INK4A mRNA was detected by reverse transcription-polymerase chain reaction （RT-PCR）. In addition, the proliferation of methylated cell lines before and after treatment of demethylating agent 5-Aza-2＇-deoxycytidine （5-ADC） was examined with 3-（4, 5-dimethylthiazol-2-yl）-2, 5-diphenyltetrazolium bromide （MTT） assay in vivo. Results： Compared with the control, the expression of p16INK4A mRNA decreased significantly or absolutely defaulted in 10 of 18 （55.56%） ovarian cancer specimens and 71.4% （5/7） ovarian cancer cell lines （P〈0.05）, and the expression of p16INK4A protein also decreased （P〈0.05）. The decrease of p16INK4A was due, in part, to p16INK4A methylation, which was found in the first exon of three cell lines and six ovarian cancer specimens and the rate was 42.86% and 33.33% in ovarian cancer cell lines and specimens respectively. All the methylated cells and tissues showed expression defect of p16INK4A, but the treatment of 5-ADC reactivated the expression of p16INK4A in methylated cells and decreased the proliferation of tumor cells in vitro and in vivo. Conclusion： The expression defect of p16INK4A gene possibly has an important role in the development of ovarian cancer, and this alteration is due, in part, to the methylation of the first exon in p16INK4A.

Relationship between the Expression of Connexin43 and Bystander Effect of Suicide Gene Therapy in Ovarian Cancer

The relationship of connexin43 (Cx43) and bystander effect in ovarian tumor cells in herpes simplex virus thymidine kinase/ganciclovir (HSV-TK/GCV) gene therapy in vitro was explored and the effect of all-trans retinoic acid (RA) on the expression of Cx43 and bystander effect investigated. The Cx43 expression was detected by flowcytometry, Western blot, and immunofluorescence in two ovarian tumor cell lines OVCAR3, CaOV3 before and after RA treatment. Bystander effect was determined by the cells growth inhibitory rate with methyl thiazolyl tetrazolium. Following exposure to ganciclovir, there was much greater bystander killing in OVCAR3 than that in CaOV3 (P<0.05). The expression of Cx43 was detected in OVCAR3 by flowcytometry and Western blot, but it could not be detected in CaOV3. The expression of Cx43 in both cell lines could be induced by RA. Immunofluoresence staining showed that Cx43 protein of OVCAR3 was located on membrane surface, whereas CaOV3 in cytoplasm. RA could not change the location of Cx43 protein in both cell lines. There is relationship between Cx43 expression and HSV-TK/GCV bystander effect. HSV-TK/GCV bystander effect can be enhanced by RA in ovarian cancer.

Gynecologic oncologists involvement on ovarian cancer standard of care receipt and survival

AIM： To examine the infuence of gynecologic oncolo-gists （GO） in the United States on surgical/chemothe-rapeutic standard of care （SOC）, and how this translates into improved survival among women with ovarian cancer （OC）.METHODS： Surveillance, Epidemiology, and End Result （SEER）-Medicare data were used to identify 11688 OC patients （1992-2006）. Only Medicare recipients with an initial surgical procedure code （n = 6714） were included. Physician specialty was identified by linking SEER-Medicare to the American Medical Association Masterfile. SOC was defined by a panel of GOs. Mul-tivariate logistic regression was used to determine predictors of receiving surgical/chemotherapeutic SOC and proportional hazards modeling to estimate the effect of SOC treatment and physician specialty on survival. RESULTS： About 34% received surgery from a GO and 25% received the overall SOC. One-third of women had a GO involved sometime during their care. Women receiving surgery from a GO vs non-GO had 2.35 times the odds of receiving the surgical SOC and 1.25 times the odds of receiving chemotherapeutic SOC （P 〈 0.01）. Risk of mortality was greater among women not receiving surgical SOC compared to those who did [hazard ratio = 1.22 （95%CI： 1.12-1.33）, P 〈 0.01], and also was higher among women seen by non-GOs vs GOs （for surgical treatment） after adjusting for covariates. Median survival time was 14 mo longer for women receiving combined SOC. CONCLUSION： A survival advantage associated with receiving surgical SOC and overall treatment by a GO is supported. Persistent survival differences, particularly among those not receiving the SOC, require further investigation.

Surgery in platinum-resistant recurrent epithelial ovarian carcinoma

BACKGROUND Ovarian cancer is one of the three most common malignant tumors of the female reproductive tract and ranks first in terms of mortality among gynecological tumors.Epithelial ovarian carcinoma(EOC)is the most common ovarian malignancy,accounting for 90%of all primary ovarian tumors.The clinical value of cytoreductive surgery in patients with platinum-resistant recurrent EOC remains largely unclear.AIM To evaluate the feasibility of secondary cytoreductive surgery for treating platinum-resistant recurrent EOC.METHODS This was a retrospective study of the clinical data of patients with platinumresistant EOC admitted to the Cancer Hospital of the University of Chinese Academy of Sciences between September 2012 and June 2018.Patient baseline data were obtained from clinical records.Routine follow-up of disease progression was performed as follows.CA125 assessment and physical examination were performed every 3 wk during treatment,including gynecological examination.Imaging assessment was carried out every 12 wk by B-mode ultrasound,computed tomography,or magnetic resonance imaging.The primary outcome was progression-free survival(PFS).Secondary outcomes included overall survival(OS),chemotherapy-free interval(CFI),and complications.Follow-up ended on April 15,2019.RESULTS A total of 38 patients were included.R0 resection was achieved in 25(65.8%) patients and R1/2 in 13 (34.2%). Twenty-five (65.8%) patients required organ resection. Nine(23.7%) patients had operative complications, 36 (94.7%) received chemotherapy, and five (13.2%)had targeted therapy. Median PFS and OS were 10 (95%CI: 8.27-11.73) months and 28 (95%CI:12.75-43.25) months, respectively;median CFI was 9 (95%CI: 8.06-9.94) months. R0 resection andpostoperative chemotherapy significantly prolonged PFS and OS (all P < 0.05), and R0 resectionalso significantly prolonged CFI (P < 0.05). Grade ≥ 3 complications were observed, includingrectovaginal fistula (n = 1), intestinal and urinary fistulas (n = 1), and renal failure-associated death(n = 1). Except for the patient who died after surgery, all other patients with complications weresuccessfully managed. Two patients developed intestinal obstruction and showed improvementafter conservative treatment.CONCLUSIONSecondary cytoreductive surgery is feasible for treating platinum-resistant recurrent EOC. Thesefindings provide important references for the selection of clinical therapeutic regimens.

Management of mucinous cystic neoplasms of the pancreas

The purpose of this study was to investigate the actual management of mucinous cystic neoplasm (MCN) of the pancreas. A systematic review was performed in December 2009 by consulting PubMed MEDLINE for publications and matching the "pancreatic mucinous cystic neoplasm", "pancreatic mucinous cystic tumour", "pancreatic mucinous cystic mass", "pancreatic cyst", and "pancreatic cystic neoplasm" to identify English language articles describing the diagnosis and treatment of the mucinous cystic neoplasm of the pancreas. In total, 16 322 references ranging from January 1969 to December 2009 were analysed and 77 articles were identified. No articles published before 1996 were selected because MCNs were not previously considered to be a completely autonomous disease. Definition, epidemiology, anatomopathological findings, clinical presentation, preoperative evaluation, treatment and prognosis were reviewed. MCNs are pancreatic mucinproducing cysts with a distinctive ovarian-type stroma localized in the body-tail of the gland and occurring in middle-aged females. The majority of MCNs are slow growing and asymptomatic. The prevalence of invasive carcinoma varies between 6% and 55%. Preoperative diagnosis depends on a combination of clinical features, tumor markers, computed tomography (CT), magnetic resonance imaging, endoscopic ultrasound with cyst fluid analysis, and positron emission tomography-CT. Surgery is indicated for all MCNs.

EXPRESSION AND SIGNIFICANCE OF BASIC FIBROBLAST GWOWTH FACTOR AND FIBROBLAST GROWTH FACTOR RECEPTOR-1 IN OVARIAN EPITHELIAL NEOPLASM

Objective To study the relevance of expression of basic fibroblast growth factor (bFGF), fibroblast growth factor receptor 1 (FGFR 1) and carcinogenesis and progression of ovarian epithelial neoplasm. Methods Ten cases of normal ovarian tissues and 75 cases of ovarian epithelial neoplasm tissues were detected by immunohistochemical methods: S P for bFGF, FGFR 1,double immunohistochemistry Lab SA for Ki 67 antigen and bFGF. Results The expression level of bFGF, FGFR 1in ovarian epithelium and ovarian epithelial neoplasm showed a step wise increase in the following order:normal <benign <borderline <malignant; The expression level and intensity of bFGF and FGFR 1 were increased with the decrease of differentiation degree and increase of clinical stage in ovarian carcinoma; There was no statistical difference between the expression of bFGF, FGFR 1 in serous cystadenocarcinoma and that of mucinous cystadenocarcinoma; The expression of bFGF was correlated with that of FGFR 1 in neoplastic tissues; There were positive expression rates of bFGF and Ki 67 antigen in ovarian epithelial neoplasm. Conclusion As an important proliferative factor, bFGF plays an important role in carcinogenisis and progression of ovarian epithelial neoplasm.

The relationship between the expression of hK6 in ovarian neoplasm and the clinicopathologic variables and prognosis

Objective: The aim of this study was to approach the relationship between the expression of human kallikrein 6 (hK6) in ovarian neoplasm and the clinicopathologic variables and prognosis for finding a new tumor marker for ovarian cancer. Methods: Through immunohistochemistry to examine the expression of hK6 in 19 cases with benign, 11 cases with borderline and 45 cases with malignant ovarian neoplasms and statistically analyzed whether the expression of hK6 correlated with the clinicopathologic variables and prognosis in patients with ovarian cancer. Results: The positive rate of hK6 in ovarian cancer tissues (60.0%) was significantly higher than that in the benign (15.8%) and borderline (27.3%) ovarian neoplasm tissues (P < 0.01). The expression of hK6 in low-grade ovarian cancer tissues was higher than that in high-grade (68.4% vs 14.3%; P < 0.05); hK6 in late–stage (stage III) was more frequently expressed than that in early-stage (stage I or II) (76.7% vs 26.7%; P < 0.01); and it significantly higher in ovarian carcinomas with lymph node metastases than those without lymph node metastases (77.8% vs 33.3%; P < 0.01 ); moreover, the expression of hK6 in the cancer tissues that the patients died or their pathogenetic condition recurred or their tumor metastasized within 3 years after surgery was higher (75.0%) than that in the cancer tissues that the pathogenetic condition of the patients was stable (42.9%; P < 0.05). Conclusion: The expression of hK6 in ovarian cancer tissues was higher than that in the benign and borderline ovarian neoplasm tissues, and high hK6 expression correlated with late–stage, low-grade, node metastasis and poor prognosis of patients. hK6 could potentially be a novel tumor marker for ovarian cancer that can predict the prognosis of the patients.

A Case of Low-Grade Appendiceal Mucinous Neoplasm of Its Difficultly to Distinguish from a Right Ovarian Tumor Due to Postmenopause

We here present a rare case of appendiceal tumor mimicking ovarian tumor in menopause woman. The patient was a 56-year-old woman, G1P1, who presented to our hospital with a right adnexal cyst diagnosed at another hospital. Transvaginal echocardiography showed a cyst in the right adnexal region, and pelvic contrast-enhanced MRI revealed a small cyst in the same region. The left ovary was atrophic and identifiable. It was unclear whether the cyst was contiguous with the gastrointestinal tract. Blood tests showed no elevation of tumor markers. We considered its possibility of a gastrointestinal origin, but since right normal ovary was not found, we thought the tumor was of ovarian origin and decided on a laparoscopic resection of the right adnexa. Intraoperatively, we observed atrophied bilateral normal ovaries, and the pelvic tumor was contiguous to the appendix. Surgeons performed a laparoscopic appendectomy after consultation with us. After resection we searched the abdominal and pelvic cavities, but found no obvious disseminated lesions. The histological diagnosis was low-grade appendiceal mucinous neoplasm (LAMN), a rare benign tumor of the appendix. Appendiceal tumors can be difficult to differentiate from right ovarian tumors due to their close anatomic location in the pelvis. It is possible to determine whether the tumor is of ovarian or appendiceal origin by identifying normal ovaries and the location of the feeding vessels into the tumors. In our case, there were no lesions other than the appendix, but LAMN can metastasize to the ovary, cause pseudomyoxoma peritonei, or be an overlapping tumor with an ovarian tumor. If an appendiceal tumor is diagnosed after surgery for ovarian tumor, the intra-abdominal cavity should be searched for metastasis or dissemination, and a thorough search for ovarian lesions should be performed with the possibility of an overlapping tumor in mind.

Human ovarian neoplasm cell CD147 stimulates production and activation of matrix metalloproteinases in co-cultures with mouse fibroblasts

Objective: To investigate the expression of CD147 on human ovarian neoplasm cell lines and its influence on production and activation of matrix metallproteinases(MMPs). Methods: The expression of CD147 on different human ovarian neoplasm cell lines was studied by western blotting. Co-culture was carried out to investigate the stimulative effect of the positive expression CD147 cell HO-8910 on the production of MMPs of fibroblast cell in vitro. Zymography and immune blotting were used to study the production and activity of positive MMPs, at the time, to explore the relation between CD147 and MMPs. Results: CD147 was positively presented in 2 ovarian neoplasm cell lines(HO-8910,3-AO), but in SKOV3, TC-1,NIN3T3 cell was negative. MMP-2 and MMP-9 were detected by HO-8910 cell line, mouse fibroblast cell and co-culture cells; but the expression in co-culture cell is obviously higher than individual cultures of each type alone.CD147 stimulated MMPs in dose-dependent manner. Conclusion: CD147 causes increased production and activation of MMP-2, MMP-9.CD147 is probably a indirect marker of some ovarian cancer cells with invasion and metastasis.

The clinical significance of the expression of the metastasis suppressor gene KAI1 in epithelial ovarian carcinoma

Objective:To investigate the potential role of KAI1 in epithelial ovarian carcinoma(EOC), and to determine whether the expression of the KAI1 gene is associated with EOC progression.The clinical significance in this tumor is also evaluated.Method: Immunohistochemistry SP method was performed to examine the expression level of KAI1 in EOC.Results: Thirty eight of 66 cancer specimens showed KAI1 protein positive (57.58%),which lower significantly than that in the patients with benign and borderline tumors(90.91%).The statistical evaluation showed that the expression of KAI1 had a correlation with FIGO stags as well as lymph node metastasis(or distant metastasis)(P<0.05).It also revealed an inverse relationship between histological grade and KAI1 expression (P<0.05).Conclusion: KAI1 protein expression is closely correlated with the malignent progression and metastasis of EOC; detecting the expression of KAI1 probably possesses clinical significance in evaluating the differentiation,tumor progression and predicting the prognosis of EOC.

TGF-β-regulated different iron metabolism processes in the development and cisplatin resistance of ovarian cancer

The impact of different iron metabolism processes(DIMP)on ovarian cancer remains unclear.In this study,we employed various gene chips and databases to investigate the role of DIMP in the initiation and development of ovarian cancer.cBioPortal was used to determine mutations in DIMP-associated genes in ovarian cancer.Kaplan-Meier plotter was used to examine the influence of DIMP on the prognosis of ovarian cancer.By analyzing 1669 serous ovarian cancer cases,we identified a range of mutations in iron metabolism genes,notably in those coding for the transferrin receptor(19%),melanotransferrin(19%),and ceruloplasmin(10%)in the iron import process,and glucose-6-phosphate isomerase(9%),hepcidin antimicrobial peptide(9%),metal regulatory transcription factor 1(8%),and bone morphogenetic protein 6(8%)in the iron regulation process.Compared to the unaltered group,the group with gene alterations exhibited a higher tumor mutation burden count(43 vs.54)and more advanced histologic grade(78.19%vs.87.90%).Compared to the normal ovarian counterparts,a reduction in expression was observed in 9 out of the 14 genes involved in iron utilization and 4 out of the 5 genes involved in iron export in ovarian cancer;in contrast,an increase in expression was observed in 2 out of the 3 genes involved in iron storage in ovarian cancer.Furthermore,in cisplatin-resistant cells compared to cisplatin-sensitive ones,the expression of all genes in iron storage and 13 out of 14 genes in iron import was decreased,while that of 8 out of the 10 genes in iron utilization was increased.In addition,survival curve analysis indicated that a higher expression in the majority of genes in the iron import process(12/21),or a reduced expression in most genes in the iron export process(4/5)correlated with poor progression-free survival.Additionally,TGF-βcould regulate the expression of most iron metabolism-associated genes;particularly,expression of genes involved in the iron storage process(2/2)was inhibited after TGF-β1 or TGF-β2 treatment.In conclusion,DIMP plays multifaceted roles in the initiation,chemo-resistance,and prognosis of ovarian cancer.Therapeutically targeting DIMP may pave the way for more tailored treatment approaches for ovarian cancer.

Immune pathway through endometriosis to ovarian cancer

Endometriosis is an estrogen-dependent inflammatory disease,defined by the presence of functional endometrial tissue outside of the uterine cavity.This disease is one of the main gynecological diseases,affecting around 10%-15%women and girls of reproductive age,being a common gynecologic disorder.Although endometriosis is a benign disease,it shares several characteristics with invasive cancer.Studies support that it has been linked with an increased chance of developing endometrial ovarian cancer,representing an earlier stage of neoplastic processes.This is particularly true for women with clear cell carcinoma,low-grade serous carcinoma and endometrioid.However,the carcinogenic pathways between both pathologies remain poorly understood.Current studies suggest a connection between endometriosis and endometriosis-associated ovarian cancers(EAOCs)via pathways associated with oxidative stress,inflammation,and hyperestrogenism.This article aims to review current data on the molecular events linked to the development of EAOCs from endometriosis,specifically focusing on the complex relationship between the immune response to endometriosis and cancer,including the molecular mechanisms and their ramifications.Examining recent developments in immunotherapy and their potential to boost the effectiveness of future treatments.

卵巢上皮癌组织中survivin的表达及其与Fas、FasL表达的关系

背景与目的:近期研究表明,凋亡抑制蛋白survivin在细胞凋亡和有丝分裂中起重要作用,于多种常见的恶性肿瘤有表达。本研究拟探讨survivin在卵巢上皮癌中的表达,及其与Fas、FasL表达的相互关系。方法:用免疫组织化学SP法检测84例卵巢上皮癌组织、39例卵巢良性肿瘤组织和20例正常卵巢组织中survivin、Fas、FasL的表达。结果:63.1%的卵巢上皮癌组织表达survivin基因,良性肿瘤组织表达率为30.8%,而正常卵巢组织中无表达,差异有显著性(P<0.01)。Survivin表达的高低与临床分期、组织学分级等密切相关。Fas在卵巢上皮癌组织中的表达(23.8%)显著低于卵巢良性肿瘤组织(53.8%)(P<0.01);而FasL在卵巢上皮癌组织中的表达(44.0%)则显著高于卵巢良性肿瘤组织(23.1%)(P<0.05)。survivin的表达与Fas、FasL的表达密切相关。结论:(1)Survivin基因在卵巢上皮癌组织中表达上调;(2)Fas与FasL在卵巢上皮癌中的异常表达及其与survivin基因的表达密切相关,说明它们在卵巢上皮癌的发生发展过程中可能通过共同的机制参与卵巢上皮癌的发生。

RNA干扰Survivin基因沉默对卵巢癌SKOV3及SKOV3/ADM细胞凋亡的影响

背景与目的:RNA干扰技术被广泛应用于肿瘤基因治疗、抗病毒感染、基因药物筛选等许多领域。Survivin基因在卵巢癌细胞株SKOV3及其耐药株SKOV3/ADM中高表达,是进行卵巢癌基因治疗理想的靶点。本研究探讨Survivin基因沉默后对卵巢癌细胞SKOV3及其耐药株SKOV3/ADM凋亡的影响。方法:将重组质粒pshRNA鄄Survivin以脂质体转染至SKOV3、SKOV3/ADM细胞。分别用半定量RT鄄PCR、Westernblot检测细胞内SurvivinmRNA和蛋白表达的变化,吖啶橙/溴乙锭(AO/EB)染色法、TUNEL及流式细胞仪检测重组质粒诱导细胞凋亡的情况。结果:转染pshRNA鄄Survivin后,SKOV3、SKOV3/ADM细胞中SurvivinmRNA拷贝数明显减少,抑制率分别为83.79%和91.56%,蛋白质的表达水平显著降低;干扰组细胞凋亡率显著高于对照组(P<0.01)。流式细胞仪检测结果显示,Survivin沉默后48h,SKOV3、SKOV3/ADM的细胞凋亡率分别为14.05%和21.02%,而在对照组未检测到明显凋亡。结论:重组质粒pshRNA鄄Survivin可明显抑制SKOV3、SKOV3/ADM细胞内SurvivinmRNA和蛋白的表达,介导卵巢癌细胞凋亡。

卵巢癌组织中Survivin和PCNA的表达

目的 :研究卵巢癌组织中Survivin的表达及其临床意义。方法 :用免疫组化法检测 38例卵巢癌和 1 2例卵巢良性肿瘤组织中Survivin和细胞增殖核抗原 (PCNA)蛋白的表达 ,用原位杂交 (ISH)法检测SurvivinmRNA。结果 :卵巢癌组织中SurvivinmRNA及其蛋白的阳性表达率分别为 6 8.4 2 % (2 6 / 38)、81 .5 8% (31 / 38) ,高于卵巢良性肿瘤组织中的 2 5 .0 0 % (3/ 1 2 )、33.33% (4 / 1 2 ) (P <0 .0 5或P <0 .0 1 )。其中 ,Survivin蛋白表达阳性的卵巢癌组织中PCNA标记指数明显高于Survivin蛋白表达阴性者 ,且Survivin表达与卵巢癌的临床分期、分化程度、淋巴结转移和腹水密切相关 ,但与组织学类型无关。结论 :卵巢癌组织中Survivin表达增强 ,且与细胞增殖密切相关 ;

卵巢上皮性肿瘤中PTEN和survivin的表达及意义

目的:研究卵巢上皮性肿瘤中PTEN和survivin的表达。方法:采用免疫组织化学法检测PTEN和survivin在57例卵巢上皮性癌、20例卵巢良性上皮性肿瘤和10例正常卵巢组织标本中的表达。结果:卵巢上皮性癌中survivin的阳性表达率(64.91%)明显高于正常卵巢组织(0%)及卵巢良性上皮性瘤(0%),P<0.01。卵巢上皮性癌中PTEN的阳性表达率(38.60%)明显低于正常卵巢组织(100%)及卵巢良性上皮性瘤(95.00%),P<0.05;survivin的阳性表达、PTEN的阴性表达及survivin阳性与PTEN阴性的共表达与卵巢上皮性癌的临床分期、病理分级正相关(P<0.05)。结论:Survivin的表达上调及PTEN的表达下调与卵巢上皮性癌的发生相关,并且在卵巢上皮性癌的发生发展中有协同作用,联合检测其中的指标对于评价卵巢上皮性癌的恶性程度、转移及预后具有临床价值。

Survivin反义寡核苷酸对卵巢癌细胞株凋亡和侵袭、迁移的影响

目的:观察survivin反义寡核苷酸(ASODN)对人卵巢癌细胞株SKOV3凋亡和侵袭、迁移的影响,探讨其作用的分子机制和临床价值。方法:用脂质体LipofectamineTM2000介导ASODN转染人卵巢癌细胞株SKOV3,Transwell小室检测细胞侵袭和迁移能力的改变,流式细胞学技术检测细胞凋亡指数及survivin、Smac、VEGF蛋白表达改变,逆转录酶链反应(RT-PCR)检测survivin、Smac/DIABLO、VEGF基因表达改变。结果:脂质体LipofectamineTM2000介导ASODN转染人卵巢癌细胞株SKOV3,FCM及共聚焦显微镜(SLM510)检测结果显示转染率>95%。用600 nmol/L ASODN转染48 h后,细胞迁移和侵袭能力下降(t=3.47,P<0.05;t=5.72,P<0.01)。细胞凋亡指数(AI)明显增加(t=6.37,P<0.05)。Survivin mRNA和蛋白表达明显下调(t=3.50,P<0.05;t=7.81,P<0.01),Smac mRNA和蛋白表达上调(t=-2.80,P<0.05;t=11.39,P<0.01),VEGF mRNA和蛋白表达明显下调(t=2.54,P<0.05;t=33.84,P<0.01)。结论:ASODN可诱导卵巢癌细胞凋亡,降低卵巢癌细胞侵袭和迁移能力。这些作用是通过下调survivin、VEGF基因,上调Smac基因表达来共同完成的,他们之间的相互作用可能是卵巢癌发生、发展和转移的重要分子机制,survivin可能在其中起关键性作用。针对survivin的基因治疗将成为卵巢癌治疗的重要手段,有重要的临床价值。