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Ovarian clear cell carcinoma

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https://www.readbyqxmd.com/read/28443461/mir-1202-functions-as-a-tumor-suppressor-in-glioma-cells-by-targeting-rab1a
#1
Yu Quan, Qian Song, Jvbo Wang, Lingyu Zhao, Jian Lv, Shouping Gong
Aberrant expression of microRNAs correlates with the development and progression of human cancers by targeting downstream proteins. MiR-1202 is downregulated in ovarian cancer and clear cell papillary renal cell carcinoma; however, its role in glioma remains unknown. The purpose of this study was to determine the expression and the role of miR-1202 and to elucidate its regulatory mechanism in glioma. We used quantitative real-time polymerase chain reaction to measure miR-1202 expression in both glioma tissues and cell lines...
April 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28440973/histochemical-and-immunohistochemical-study-of-%C3%AE-sma-collagen-and-pcna-in-epithelial-ovarian-neoplasm
#2
Nungki Anggorowati, Chatarina Ratna Kurniasari, Karina Damayanti, Titik Cahyanti, Irianiwati Widodo, Ahmad Ghozali, Muhammad Mansyur Romi, Dwi Cahyani Ratna Sari, Nur Arfian
Background: Alpha-smooth muscle actin (α-SMA) is an isoform of actin, positive in myofibroblasts and is an epithelial to mesenchymal transition (EMT) marker. EMT is a process by which tumor cells develop to be more hostile and able to metastasize. Progression of tumor cells is always followed by cell composition and extracellular matrix component alteration. Increased α-SMA expression and collagen alteration may predict the progressivity of ovarian neoplasms. Objective: The aim of this research was to analyse the characteristic of α-SMA and collagen in tumor cells and stroma of ovarian neoplasms...
March 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28438620/expression-of-protease-activated-receptor-2-par-2-is-related-to-advanced-clinical-stage-and-adverse-prognosis-in-ovarian-clear-cell-carcinoma
#3
Murasaki Aman, Yoshihiro Ohishi, Hiroko Imamura, Tomoko Shinozaki, Nobuko Yasutake, Kiyoko Kato, Yoshinao Oda
Recent studies demonstrated that Protease-activated receptor-2 (PAR-2) correlates with tumor progression in various tissues. On the other hand, oxidative stress arising from endometriosis has been considered a cause of carcinogenesis in ovarian clear cell carcinoma (OCCC). We previously demonstrated that oxidative stress upregulates PAR-2 expression, and we conducted the present study to investigate the PAR-2 expression and its relation to clinicopathological factors and oxidative stress in OCCC. We performed an immunohistochemical evaluation in 95 cases of OCCC...
April 21, 2017: Human Pathology
https://www.readbyqxmd.com/read/28435289/long-noncoding-rna-nbat-1-suppresses-tumorigenesis-and-predicts-favorable-prognosis-in-ovarian-cancer
#4
Changsheng Yan, Yi Jiang, Yicong Wan, Lin Zhang, Jinhui Liu, Shulin Zhou, Wenjun Cheng
Long noncoding RNA (lncRNA) has been proven to be involved in many biological processes in ovarian cancer (OC). However, the mechanism still remains unknown. In this study, we screened significantly downregulated NBAT-1, which has been proven to play a significant role in breast cancer, clear cell renal cell carcinoma, and neuroblastoma, but not in OC, in two independent datasets with relatively more samples (GSE18520 and GSE38666) from Gene Expression Omnibus. We found that lncRNA NBAT-1 was obviously downregulated in OC tissue compared to normal ovarian tissue (P<0...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28428108/the-gene-copy-number-of-c-met-has-a-significant-impact-on-progression-free-survival-in-korean-patients-with-ovarian-carcinoma
#5
Wook Youn Kim, Seung-Hyuk Shim, Ho Young Jung, Meari Dong, Soo-Nyung Kim, Sun Joo Lee
The aim of this study was to compare the protein overexpression and gene copy number (GCN) of c-MET in ovarian carcinoma and to assess their prognostic roles in Korean women. MET protein expression and GCN status were determined using immunohistochemistry (IHC) and silver in situ hybridization (SISH), respectively, in 105 ovarian carcinomas comprising 63 serous, 12 mucinous, 20 clear cell, and 10 endometrioid carcinomas. All cases had been treated and followed up at a single institute in Seoul, Korea. MET protein overexpression was observed in 35 of 105 (33...
April 17, 2017: Human Pathology
https://www.readbyqxmd.com/read/28423547/genomic-imbalances-are-involved-in-mir-30c-and-let-7a-deregulation-in-ovarian-tumors-implications-for-hmga2-expression
#6
Antonio Agostini, Marta Brunetti, Ben Davidson, Claes G Tropé, Sverre Heim, Ioannis Panagopoulos, Francesca Micci
The High-mobility group AT-hook 2 protein (HMGA2) is involved in different processes during tumorigenesis. High expression levels of HMGA2 are found in various types of cancer, with recent studies highlighting the important role of miRNAs in the regulation of HMGA2 expression. We report a study of 155 ovarian tumors (30 sex-cord stromal tumors, 22 borderline tumors, and 103 carcinomas) analyzed for HMGA2 expression as well as the expression of two miRNAs targeting this gene, let-7a and miR-30c. We also evaluated the expression of the fragile histidine triad (FHIT) and lin28 homologues (LIN28A/B) genes which are known to be an enhancer of miR-30c expression and a repressor of let-7a, respectively...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28389144/clear-cell-carcinomas-of-the-ovary-have-poorer-outcomes-compared-with-serous-carcinomas-results-from-a-single-center-taiwanese-study
#7
Fei-Chun Ku, Ren-Chin Wu, Lan-Yan Yang, Yun-Hsin Tang, Wei-Yang Chang, Jung-Erh Yang, Chun-Chieh Wang, Shih-Ming Jung, Cheng-Tao Lin, Ting-Chang Chang, Angel Chao, Chyong-Huey Lai
BACKGROUND/PURPOSE: To compare the clinical outcomes of Taiwanese patients with ovarian clear cell carcinomas (CCCs) and serous carcinomas (SCs). METHODS: We retrieved the clinical records of women with epithelial ovarian cancer (Stage I-IV) who received primary surgeries between 2000 and 2013. Cancer-specific survival (CSS), progression-free survival, and survival after recurrence (SAR) of CCC and SC patients were retrospectively compared. Multivariate analysis was used to identify the independent predictors of survival...
April 4, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28388560/galnt6-expression-enhances-aggressive-phenotypes-of-ovarian-cancer-cells-by-regulating-egfr-activity
#8
Tzu-Chi Lin, Syue-Ting Chen, Min-Chuan Huang, John Huang, Chia-Lang Hsu, Hsueh-Fen Juan, Ho-Hsiung Lin, Chi-Hau Chen
Ovarian cancer is the most lethal of the gynecologic malignancies. N-acetylgalactosaminyltransferase 6 (GALNT6), an enzyme that mediates the initial step of mucin type-O glycosylation, has been reported to regulate mammary carcinogenesis. However, the expression and role of GALNT6 in ovarian cancer are still unclear. Here we showed that high GALNT6 expression correlates with increased recurrence, lymph node metastasis, and chemoresistance in ovarian endometrioid and clear cell carcinomas; and higher GALNT6 levels are significantly associated with poorer patient survivals...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28384868/diagnostic-and-prognostic-significance-of-ki-67-immunohistochemical-expression-in-surface-epithelial-ovarian-carcinoma
#9
Asha Mahadevappa, Shruthi Mysore Krishna, Manjunath Gubbanna Vimala
INTRODUCTION: The Surface Epithelial Ovarian Carcinoma (SEOC) at the moment of diagnosis, the disease is extended beyond the structures of the pelvis. Ki-67 is one of the prognostic marker which determines the growth fraction of a tumour and its over expression is associated with malignancy, tumour aggression, reserved prognosis and metastasis. AIM: To evaluate the proliferative activity using Ki-67 immuno-staining in SEOC and to correlate with histological subtype, grade, Federation of Gynecology and Obstetrics (FIGO) stage, CA125 levels for diagnostic and prognostic purpose...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28382796/inhibition-of-autophagy-protein-lc3a-as-a-therapeutic-target-in-ovarian-clear-cell-carcinomas
#10
Morikazu Miyamoto, Masashi Takano, Tadashi Aoyama, Hiroaki Soyama, Tomoyuki Yoshikawa, Hitoshi Tsuda, Kenichi Furuya
OBJECTIVE: Ovarian clear cell carcinoma (CCC) is one of histological subtypes showing poor prognosis due to chemoresistance. The association of autophagy-related proteins and clinical implementation in CCC has not been determined. METHODS: The present study investigated whether expression of autophagy-related protein, light chain 3A (LC3A), was related with prognoses in the patients with CCC using immuno-histochemical stainings, and whether inhibition of autophagy modified the sensitivity to cisplatin in CCC cells in vitro...
May 2017: Journal of Gynecologic Oncology
https://www.readbyqxmd.com/read/28367736/expression-of-wt1-and-pax8-in-the-epithelial-tumours-of-malaysian-women-with-ovarian-cancer
#11
Anthony Rhodes, Narayanan Vallikkannu, Pailoor Jayalakshmi
BACKGROUND: Ovarian cancer is particularly lethal due to late stage at presentation. The subtypes behave differently with respect to their biology and response to treatment. Two recent markers reported to be useful in assisting in the diagnosis are WT1 and PAX8. Malaysia, with its multi-ethnic population provides an opportunity to study the expression of these biomarkers in ovarian cancer in the three most populous ethnicities in Asia and ascertain their usefulness in the diagnosis of ovarian carcinoma...
April 2017: British Journal of Biomedical Science
https://www.readbyqxmd.com/read/28362708/napsin-a-a-possible-diagnostic-marker-for-differentiating-clear-cell-ovarian-carcinoma-from-other-high-grade-ovarian-carcinomas
#12
Hanan A Alshenawy, Dina A Radi
Ovarian clear cell carcinoma (CCC) is divergent from other types of epithelial ovarian carcinoma in terms of clinicopathologic and molecular features. It should be separated from other high-grade carcinomas of the ovary for appropriate treatment. Napsin A is a reliable marker for adenocarcinoma of the lungs, but its role in ovarian epithelial carcinomas is vague. We investigated the expression of a panel of TTF-1, paired box 8, estrogen receptor, Wilms tumor 1, and Napsin A in 100 cases of high-grade ovarian carcinomas...
March 30, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28349114/comprehensive-genomic-profiling-cgp-of-ovarian-clear-cell-carcinomas-occc-identifies-clinically-relevant-genomic-alterations-crga-and-targeted-therapy-options
#13
Julia A Elvin, Justin Chura, Laurie M Gay, Maurie Markman
•MTOR pathway genes are often mutated in ovarian clear cell carcinomas (OCCC).•11.2% of OCCC have targetable alterations only in the mTOR pathway.•MTOR pathway mutations in OCCC can underlie robust, lasting responses to everolimus.
May 2017: Gynecologic Oncology Reports
https://www.readbyqxmd.com/read/28344892/clear-cell-ovarian-cancers-with-microsatellite-instability-a-unique-subset-of-ovarian-cancers-with-increased-tumor-infiltrating-lymphocytes-and-pd-1-pd-l1-expression
#14
Brooke E Howitt, Kyle C Strickland, Lynette M Sholl, Scott Rodig, Lauren L Ritterhouse, Dipanjan Chowdhury, Alan D D'Andrea, Ursula A Matulonis, Panagiotis A Konstantinopoulos
Clear cell ovarian carcinoma (CCOC) represents a distinct histologic subtype of ovarian cancer associated with significantly worse prognosis across all stages and no effective therapeutic options. Here, we report a rare but clinically important cohort of CCOCs with microsatellite instability (MSI) (MSI-CCOCs), which are highly immunogenic and may thus be very responsive to immune checkpoint blockade. CCOCs with MSI exhibit a significantly higher number of CD8(+) TILs, higher CD8(+)/CD4(+) ratio, and higher PD-1(+) TILs compared with microsatellite stable (MSS) CCOCs and compared with high grade serous ovarian cancers, which are the most common histologic subtype of ovarian cancer...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28342812/a-laparo-endoscopic-single-site-surgical-approach-to-laparoscopic-salpingectomy
#15
Stacey A Scheib
STUDY OBJECTIVE: To demonstrate a laparo-endoscopic single site (LESS) surgical approach to salpingectomy. DESIGN: Technical video demonstrating step-by-step a LESS surgical approach to salpingectomy. (Canadian Task Force classification level III). IRB approval was not required for this study. SETTING: Of all gynecologic cancer types, ovarian cancer has the highest mortality rate and is the fifth leading cause of cancer deaths among women...
March 22, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28325358/seromucinous-ovarian-tumor-a-comparison-with-the-rest-of-ovarian-epithelial-tumors
#16
COMPARATIVE STUDY
Georgia Karpathiou, Celine Chauleur, Thomas Corsini, Melany Venet, Cyril Habougit, Freschia Honeyman, Fabien Forest, Michel Peoc'h
BACKGROUND: Seromucinous ovarian tumors are rare and not adequately described in the literature and this is especially true for seromucinous carcinomas. AIM OF THE STUDY: To describe histological and clinical features of these tumors in comparison with the rest of ovarian epithelial tumors. MATERIALS AND METHODS: Two hundred and forty one (241) ovarian tumors, borderline (n=92) or malignant (n=149), treated surgically without neoadjuvant chemotherapy, were examined...
April 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28319570/microcystic-elongated-and-fragmented-pattern-invasion-in-ovarian-endometrioid-carcinoma-immunohistochemical-profile-and-prognostic-implications
#17
Allison Goldberg, Lauren Hand, Dan DeCotiis, Norman Rosenblum, Joanna Chan
Microcystic, elongated, and fragmented (MELF) pattern invasion is a poor prognostic indicator in uterine endometrioid carcinoma, but its existence, biology, and prognostic value have not been described in ovarian endometrioid carcinoma. We evaluated cases of ovarian endometrioid carcinoma without synchronous uterine endometrioid carcinoma for MELF and other histologic features. To evaluate tumor biology, we assessed an immunohistochemical profile, including MLH1, PMS2, MSH2, MSH6, β-catenin, e-cadherin, CK19, and cyclin D1...
March 17, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28277307/pathology-of-borderline-and-invasive-cancers
#18
REVIEW
Jaime Prat
Epithelial ovarian tumors are heterogeneous neoplasms primarily classified according to cell type. They are further subdivided into benign, borderline, and malignant (carcinomas), and this subdivision is very important as it correlates with behavior. Borderline ovarian tumors show epithelial proliferation higher than that seen in their benign counterparts and variable nuclear atypia; however, in contrast to carcinomas, there is no destructive stromal invasion, and their prognosis is much better. Ovarian carcinomas are the most common ovarian cancers and the most lethal gynecological malignancies...
October 3, 2016: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/28259988/targeting-glutamine-metabolism-and-the-focal-adhesion-kinase-additively-inhibits-the-mammalian-target-of-the-rapamycin-pathway-in-spheroid-cancer-stem-like-properties-of-ovarian-clear-cell-carcinoma-in%C3%A2-vitro
#19
Masakazu Sato, Kei Kawana, Katsuyuki Adachi, Asaha Fujimoto, Mitsuyo Yoshida, Hiroe Nakamura, Haruka Nishida, Tomoko Inoue, Ayumi Taguchi, Juri Ogishima, Satoko Eguchi, Aki Yamashita, Kensuke Tomio, Osamu Wada-Hiraike, Katsutoshi Oda, Takeshi Nagamatsu, Yutaka Osuga, Tomoyuki Fujii
Ovarian cancer is one of the leading causes of death in the world, which is linked to its resistance to chemotherapy. Strategies to overcome chemoresistance have been keenly investigated. Culturing cancer cells in suspension, which results in formation of spheroids, is a more accurate reflection of clinical cancer behavior in vitro than conventional adherent cultures. By performing RNA-seq analysis, we found that the focal adhesion pathway was essential in spheroids. The phosphorylation of focal adhesion kinase (FAK) was increased in spheroids compared to adherent cells, and inhibition of FAK in spheroids resulted in inhibition of the downstream mammalian target of the rapamycin (mTOR) pathway in ovarian clear cell carcinomas...
February 23, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28257597/international-patterns-and-trends-in-ovarian-cancer-incidence-overall-and-by-histologic-subtype
#20
S B Coburn, F Bray, M E Sherman, B Trabert
Internationally, ovarian cancer is the 7th leading cancer diagnosis and 8th leading cause of cancer mortality among women. Ovarian cancer incidence varies by region, particularly when comparing high vs. low-income countries. Temporal changes in reproductive factors coupled with shifts in diagnostic criteria may have influenced incidence trends of ovarian cancer and relative rates by histologic subtype. Accordingly, we evaluated trends in ovarian cancer incidence overall (1973-1977 to 2003-2007) and by histologic subtype (1988-1992 to 2003-2007) using volumes IV-IX of the Cancer Incidence in Five Continents database (CI5plus) and CI5X (volume X) database...
March 3, 2017: International Journal of Cancer. Journal International du Cancer
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