Expression of glucose-regulated protein 78 (GRP78) and its regulator microrna-181 during the development and progression of ovarian cancer.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 5579-5579
Author(s):  
Animesh Barua ◽  
Aparna Yellapa ◽  
Salvatore A Grasso ◽  
Jacques S Abramowicz ◽  
Sameer Sharma ◽  
...  

5579 Background: Ovarian cancer (OVCA) is a lethal malignancy of women with a distinct pattern of metastasis through peritoneal dissemination. Sustained exposure of the ovaries to oxidative stress due to inflammatory processes including ovulatory genotoxicity, makes the ovarian microenvironment conducive to malignant cell proliferation. GRP78 is a stress-inducible protein which resides in the endoplasmic reticulum of the cell. Thus GRP78 may be a marker of ovarian tumor associated stress and could represent a therapeutic target for OVCA. The goal of this study was to examine if GRP78 expression increases in association with OVCA development and determine the molecular mechanism of its increase in ovarian tumors. Methods: All tissues were collected from patients who underwent surgery and processed for immunohistochemistry (IHC), proteomic study (2D-WB) and miRNA expression. Expression of GRP78 was examined in paraffin sections of normal ovaries (n = 20), benign (serous cystadenoma, n = 15 and cystadenofibroma, n = 5) and ovaries with papillary serous carcinoma at early stage (n= 20 at stages I and II) and late stage (n = 20, stages III and IV) by IHC and confirmed by 2D-WB (representative samples). Changes in miRNA-181 (post-translation regulator of GRP78) expression were examined by qRT-PCR. Results: GRP78 expression by normal ovarian surface epithelium and epithelium of benign tumors was very weak. In contrast, the intensity of GRP78 expression was significantly (p<0.05) high in early stage OVCA and increased further in late stage OVCA. An immunoreactive band of 78kDa detected by 2D-WB confirmed IHC observations. In contrast, expression of miRNA-181 by malignant tumors significantly (p<0.05) decreased as the tumor progressed to late stages. Conclusions: The results of the present study suggest that GRP78 expression is associated with the development and progression of malignant ovarian tumors. Increase in GRP78 expression was associated with the down-regulation of miRNA-181. Expression of GRP78 by malignant ovarian epithelium represents a potential marker with usefulness for targeted drug delivery. Support: Elmer and Sylvia Sramek Foundation.

2013 ◽  
Vol 3 (5) ◽  
pp. 397-402 ◽  
Author(s):  
D Ghartimagar ◽  
A Ghosh ◽  
G KC ◽  
S Ranabhat ◽  
OP Talwar

Background: Ovarian cancer accounts for 3% of all cancers in females. About 80% of these are benign, and they occur mostly in young women between 20 and 45 years. Borderline tumors occur at slightly older ages while incidence of malignant tumors increases with age, occurring predominantly in perimenopausal and postmenopausal women. About 190,000 new cases and 114,000 deaths from ovarian cancer are estimated to occur annually worldwide. The aim of the study was to fi nd the incidence of surface ovarian tumor in a tertiary referral centre. Materials and methods: This was a retrospective study carried out in the department of pathology, Manipal Teaching Hospital from January 2001 to December 2012. Specimens were received from the same and other hospitals. Records were retrieved from the departmental data bank and were analyzed. Results: : A total of 310 cases of ovarian tumors have been reported in the same period. Among them, 180 cases were of surface epithelial origin and out of which 24 cases had bilateral tumors. Benign tumors comprised of 148 cases, 6 were borderline and 44 were malignant. Among these, the commonest was serous cystadenoma (98 cases) and the least common was malignant Brenner (2 cases). Combined or mixed tumor was seen in 9 cases. Conclusion: : In our study surface epithelial tumors comprised 58% of all ovarian tumors. In both benign and malignant cases, serous tumor was the commonest followed by mucinous tumors. Journal of Pathology of Nepal (2013) Vol. 3, No.1, Issue 5, 397-402 DOI: http://dx.doi.org/10.3126/jpn.v3i5.7868


2004 ◽  
Vol 14 (1) ◽  
pp. 89-93 ◽  
Author(s):  
A. M. Makhlouf ◽  
M. M. Fathalla ◽  
M. A. Zakhary ◽  
M. H. Makarem

ObjectivesTo investigate the expression of sulfatides in the tissue homogenates of malignant ovarian tumors, benign ovarian tumors, and control tissues and to study the relation between this marker and other clinico-pathological criteria such as the tumor type, grade of differentiation, surgical stage and ovulatory years.DesignCross-sectional study.SettingDepartment of Obstetrics and Gynecology and Department of Biochemistry, Assuit university hospital.SubjectsForty-six patients had malignant ovarian tumors. Sixteen patients had benign ovarian neoplasm. Thirty patients, with normal ovaries, represented the control group.MethodsA sample of the tumor or from the normal ovary (the control group) was sent for histopathological and biochemical examination. Sulfatides were measured by a rapid and sensitive spectrophotometric method.ResultsThere was a significant rise in benign tumors [median and range 43 (38–53)], than in the control group, 21 (18–31), P-value = 0.000. In malignant tumors, the median value of sulfatides was significantly higher than in benign tumors [127 (71–193), P-value = 0.000]. Sulfatides were significantly higher in patients with more ovulatory years and tumors of advanced stages (stage III/IV) and poor differentiation.ConclusionsSulfatides may play a role in the pathogenesis of benign and malignant ovarian tumors. It may also predict advanced stages in patients who are apparently early stage. It is also a candidate to study of their association with response to chemotherapy.


2020 ◽  
Vol 80 (04) ◽  
pp. 332-342
Author(s):  
Eduardo Reyna-Villasmil ◽  

The most common gynecological malignancies during pregnancy are cervical cancer, followed by malignant ovarian tumors. During pregnancy, gynecological examination is limited and the rate of misdiagnosis is higher. Although the appearance of ovarian tumors during pregnancy is relatively common, most of them are functional and resolve spontaneously. Treatment during pregnancy is related to factors such as tumor size, histological type, gestational age, lymph node involvement and willingness of women to continue the pregnancy. In early-stage malignant tumors, surgery should be planned preferably after 16 weeks of pregnancy and chemotherapy can be administered from the second trimester as in non-pregnant patients. Prognosis is not affected by pregnancy. The result of pregnant woman with ovarian cancer is similar to non-pregnant patients. Keywords: Ovarian cancer, Pregnancy, Management, Diagnosis, Treatment. 332


Diagnostics ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 582
Author(s):  
Marek Jerzy Kudla ◽  
Michal Zikan ◽  
Daniela Fischerova ◽  
Mateusz Stolecki ◽  
Juan Luis Alcazar

The aim of the study was to evaluate the usefulness of 4D Power Doppler tissue evaluation to discriminate between normal ovaries and ovarian cancer tumors. This was a prospective observational study. Twenty-three cases of surgically confirmed ovarian High Grade Serous Carcinoma (HGSC) were analyzed. The control group consisted of 23 healthy patients, each matching their study-group counterpart age wise (±3 years) and according to their menopausal status. Transvaginal Doppler 4D ultrasound scans were done on every patient and analyzed with 3D/4D software. Two 4D indices—volumetric Systolic/Diastolic Index (vS/D) and volumetric Pulsatility Index (vPI)—were calculated. To keep results standardized and due to technical limitations, virtual 1cc spherical tissue samples taken from the part with highest vascularization as detected by bi-directional Power Doppler were analyzed for both groups of ovaries. Values of volumetric S/D indices and volumetric PI indices were statistically lower in ovarian malignant tumors compared to normal ovaries: 1.096 vs. 1.794 and 0.092 vs. 0.558, respectively (p < 0.001). The 4D bi-directional Power Doppler vascular indices were statistically different between malignant tumors and normal ovaries. These findings could support the rationale for future studies for assessing this technology to discriminate between malignant and benign tumors.


2020 ◽  
Author(s):  
Ruoyao Zou ◽  
Haoya Xu ◽  
Feifei Li ◽  
Shengke Wang ◽  
Liancheng Zhu

Abstract Background:Ubiquitin-conjugating enzymes E2 (UBE2) have been reported in the microenvironment of various malignant tumors, but their correlation with ovarian cancer remains elusive. Methods: The Oncomine, GEPIA, Kaplan-Meier Plotter, cBioPortal, and STRING databases were used to systematically analyze the expression pattern, prognostic value, genetic variation, and biological function of 12 members of the UBE2 gene family in ovarian cancer. UBE2T exhibited the greatest correlation with ovarian cancer and was thus further examined. Gene set enrichment analysis (GSEA), as well as analyses of function and pathway enrichment, somatic mutations, copy number variation, and methylation were performed, and the correlation with immune cell infiltration was examined to explore the mechanism underlying aberrant UBE2T expression. Finally, the expression and prognostic value of UBE2T in ovarian cancer were verified by immunohistochemical evaluation of 131 clinical ovarian samples and the Gene Expression Omnibus (GEO) database (GSE51088, GSE73614, and GSE63885 datasets) analysis.Results: The mRNA levels of UBE2C, UBE2N, UBE2S, and UBE2T were significantly upregulated in ovarian cancer compared with those in normal ovarian tissue. In patients with ovarian serous carcinoma, UBE2A, UBE2B, UBE2C, UBE2G, and UBE2T upregulation and UBE2R2 downregulation were associated with poor overall survival. Moreover, UBE2A, UBE2N, and UBE2T upregulation and UBE2G and UBE2R2 downregulation were associated with poor progression-free survival. Immunohistochemistry revealed that UBE2T was significantly upregulated in ovarian malignant tumors compared with that in borderline tumors, benign tumors, and normal ovarian tissues, and its high expression was associated with poor prognosis. The Cox model showed that UBE2T upregulation was an independent risk factor affecting the prognosis of ovarian cancer (hazard ratio: 4.095, P=0.029). The above results were verified in the GEO database. In addition, UBE2T was associated with specific immune cells and mainly involved in cell cycle-related events. Genomic analysis showed that TP53 and TTN mutations were associated with UBE2T expression. Gene copy number amplification and hypomethylation may be responsible for UBE2T upregulation in ovarian cancer. Conclusions: UBE2 family members may play a role in the development of ovarian cancer. Specifically, UBE2T could serve as a new prognostic marker and therapeutic target for this disease.


2020 ◽  
Author(s):  
Ruoyao Zou ◽  
Haoya Xu ◽  
Feifei Li ◽  
Shengke Wang ◽  
Liancheng Zhu

Abstract Background:Ubiquitin-conjugating enzymes E2 (UBE2) have been reported in the microenvironment of various malignant tumors, but their correlation with ovarian cancer remains elusive. Methods: The Oncomine, GEPIA, Kaplan-Meier Plotter, cBioPortal, and STRING databases were used to systematically analyze the expression pattern, prognostic value, genetic variation, and biological function of 12 members of the UBE2 gene family in ovarian cancer. UBE2T exhibited a strong correlation with ovarian cancer and was thus further examined. Gene set enrichment analysis (GSEA), as well as analyses of function and pathway enrichment, somatic mutations, copy number variation, and methylation were performed, and the correlation with immune cell infiltration was examined to explore the mechanism underlying aberrant UBE2T expression. Finally, the expression and prognostic value of UBE2T in ovarian cancer were verified by immunohistochemical evaluation of 131 clinical ovarian samples and the Gene Expression Omnibus (GEO) database (GSE51088, GSE73614, and GSE63885 datasets) analysis.Results: The mRNA levels of UBE2C, UBE2N, UBE2S, and UBE2T were significantly upregulated in ovarian cancer compared with those in normal ovarian tissue. In patients with ovarian serous carcinoma, UBE2A, UBE2B, UBE2C, UBE2G, UBE2R2 and UBE2T upregulation were associated with poor overall survival. Moreover, UBE2A, UBE2N, UBE2R2 and UBE2T upregulation and UBE2G downregulation were associated with poor progression-free survival. Immunohistochemistry revealed that UBE2T was significantly upregulated in ovarian malignant tumors compared with that in borderline tumors, benign tumors, and normal ovarian tissues, and its high expression was associated with poor prognosis. The Cox model showed that UBE2T upregulation was an independent risk factor affecting the prognosis of ovarian cancer (hazard ratio: 4.095, P=0.029). The above results were verified in the GEO database. In addition, UBE2T was associated with specific immune cells and mainly involved in cell cycle-related events. Genomic analysis showed that TP53 and TTN mutations were associated with UBE2T expression. Gene copy number amplification and hypomethylation may be responsible for UBE2T upregulation in ovarian cancer. Conclusions: UBE2 family members may play a role in the development of ovarian cancer. Specifically, UBE2T could serve as a new prognostic marker and therapeutic target for this disease.


Author(s):  
Ashna C. Manuel ◽  
Radhamani M. V. ◽  
Priya V. ◽  
Deepa S.

Background: The incidence of cancer is increasing day by day. Ovarian cancer ranks as the fifth leading cause of cancer related death among women worldwide. The cure rate of early stage disease is high. The accepted view is that ovarian cancer arises from ovarian surface epithelium. Recent evidence suggested that around sixty percentage of women without a genetic predisposition who developed sporadic ovarian cancer also have early tubal lesion and cancer. The present study aims to find out the histopathology of fallopian tube in neoplastic surface epithelial ovarian tumour.Methods: A descriptive study was conducted among hundred women who had undergone surgery for malignant and benign surface epithelial ovarian tumor from Govt. Medical College, Kottayam for one year from January-December 2017.Results: Fifty percent of the patients had malignant surface epithelial ovarian tumors.Conclusions: The risk factors of malignant surface epithelial ovarian tumors include age above fifty years and post-menopausal women. Whereas oral contraceptive pill use is a protective factor against malignant surface epithelial ovarian tumors. The fimbrial end of fallopian tube is the site of origin of malignancy in high grade ovarian epithelial carcinoma. So, prophylactic bilateral salpingectomy should be encouraged in all patients who have completed family and undergoing hysterectomy. This will reduce the morbidity and mortality due to ovarian carcinoma.


2020 ◽  
Author(s):  
Ruoyao Zou ◽  
Haoya Xu ◽  
Feifei Li ◽  
Shengke Wang ◽  
Liancheng Zhu

Abstract Background: Ubiquitin-conjugating enzymes E2 (UBE2) have been reported in the microenvironment of various malignant tumors, but their correlation with ovarian cancer remains elusive.Methods: The Oncomine, GEPIA, Kaplan-Meier Plotter, cBioPortal, and STRING databases were used to systematically analyze the expression pattern, prognostic value, genetic variation, and biological function of 12 members of the UBE2 gene family in ovarian cancer. UBE2T exhibited the greatest correlation with ovarian cancer and was thus further examined. Gene set enrichment analysis (GSEA), as well as analyses of function and pathway enrichment, somatic mutations, copy number variation, and methylation were performed, and the correlation with immune cell infiltration was examined to explore the mechanism underlying aberrant UBE2T expression. Finally, the expression and prognostic value of UBE2T in ovarian cancer were verified by immunohistochemical evaluation of 131 clinical ovarian samples and the Gene Expression Omnibus (GEO) database (GSE51088, GSE73614, and GSE63885 datasets) analysis.Results: The mRNA levels of UBE2C , UBE2N , UBE2S , and UBE2T were significantly upregulated in ovarian cancer compared with those in normal ovarian tissue. In patients with ovarian serous carcinoma, UBE2A , UBE2B , UBE2C , UBE2G , and UBE2T upregulation and UBE2R2 downregulation were associated with poor overall survival. Moreover, UBE2A , UBE2N , and UBE2T upregulation and UBE2G and UBE2R2 downregulation were associated with poor progression-free survival. Immunohistochemistry revealed that UBE2T was significantly upregulated in ovarian malignant tumors compared with that in borderline tumors, benign tumors, and normal ovarian tissues, and its high expression was associated with poor prognosis. The Cox model showed that UBE2T upregulation was an independent risk factor affecting the prognosis of ovarian cancer (hazard ratio: 4.095, P= 0.029). The above results were verified in the GEO database. In addition, UBE2T was associated with specific immune cells and mainly involved in cell cycle-related events. Genomic analysis showed that TP53 and TTN mutations were associated with UBE2T expression. Gene copy number amplification and hypomethylation may be responsible for UBE2T upregulation in ovarian cancer.Conclusions: UBE2 family members may play a role in the development of ovarian cancer. Specifically, UBE2T could serve as a new prognostic marker and therapeutic target for this disease.


2021 ◽  
Vol 11 ◽  
Author(s):  
Hung Shen ◽  
Heng-Cheng Hsu ◽  
Yi-Jou Tai ◽  
Kuan-Ting Kuo ◽  
Chia-Ying Wu ◽  
...  

AimTo retrospectively investigate the pre-operative clinical factors and ultrasonographic features that influence the accuracy of the intraoperative frozen section (IFS) of ovarian tumors.Patients and methodsWomen with ovarian tumors that underwent IFS in one tertiary medical center were recruited from January 2010 to December 2018. Demographic and clinical data of these women were retrieved from medical records in the hospital’s centralized database.ResultsA total of 903 ovarian tumors were enrolled, including 237 (26.2%) benign, 150 (16.6%) borderline tumor, and 516 (57.2%) malignant. The overall accuracy of IFS among all specimens was 89.9%. The sensitivities of IFS in diagnosing borderline tumors (82.0%) and malignant tumors (88.2%) were lower than in diagnosing benign tumors (98.7%, p &lt;0.001, Z-test). The specificity of diagnosing malignant tumors (99.7%) was significantly higher than that of diagnosing benign tumors (94.7%, p &lt;0.001, Z-test). The group with discordant IFS and final paraffin pathology (FPP) had younger age (47.2 ± 14.0 vs. 51.5 ± 11.8 years, p = 0.013, Mann–Whitney U test), and higher percentage of early-stage disease (85.2% vs. 65.1%, p = 0.001, chi-square test) and mucinous (39.3% vs. 3.3%) and endometrioid histologic types (34.4% vs. 20.2%) than the concordant group (all by chi-square test). Menopause (OR 0.34, 95% CI 0.15–0.76, p = 0.009), multicystic tumor in ultrasound (OR 2.14, 95% CI 1.14–4.01, p = 0.018), and ascites existence (OR 0.33, 95% CI 0.14–0.82, p = 0.016) were factors related to the discordant IFS by multivariate analysis.ConclusionsIFS has good accuracy in the diagnosis of ovarian tumors. We recommend more frozen tissue sampling for sonographic multicystic tumors in premenopausal women to improve the accuracy of IFS.


2016 ◽  
Author(s):  
Dhanya S. Thomas ◽  
Ajit Sebastian ◽  
Vinotha Thomas ◽  
Anitha Thomas ◽  
Rachel Chandy ◽  
...  

Background: Cancer antigen 19-9 (CA 19-9) is a tumor-associated mucin glycoprotein antigen that may be elevated in healthy individuals as well as in patients with benign and malignant tumors. It is useful in the management of pancreatic and other gastrointestinal tumors. CA 19-9 is also elevated in benign and malignant ovarian tumors. Aim: To study the pattern of serum CA19-9 in complex ovarian tumors. Methods: The study design was descriptive, based on data collected from medical records. Patients with a complex ovarian mass, who were investigated with CA 19-9 and had undergone surgery, wereincluded in the study. The study duration was 2 years from January 2014 to December 2015. A total of 273 patients (119 - benign and 154 malignant) with complex ovarian mass and elevated CA 19-9 underwent surgery during the study period. Results: CA 19-9 was elevated in 55 patients (20%). Of these, 23 patients had benign tumors while 32 had malignant tumors.Among patients with benign tumors, 21 had dermoid, 23 had mucinous tumors and 75 had other types of tumors. CA 19-9 was elevated in 10 (47.6%) of the dermoids, 7 (30.4%) of the mucinous tumors and 6 (8%) of the other benign tumors. Among patients with malignant tumors, 138 were epithelial and 16 were non epithelial tumors. Of the epithelial tumors, 31 were mucinous and 107 were non mucinous types. Overall, 29 (21%) had elevated CA 19-9. Of the epithelial tumors, 22.6% of the mucinous type and 20.6% of the non mucinous type had elevated CA 19-9. Among the non-epithelial tumors, 3 (18.8%) had elevated CA19-9. Conclusion: CA 19-9 is elevated in several conditions but most likely to be raised in dermoid cysts and mucinous tumours. CA19-9 levels need to be interpreted along with clinical and radiological findings.


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