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https://www.readbyqxmd.com/read/27913862/prognostic-impact-of-her3-based-on-protein-and-mrna-expression-in-high-grade-serous-ovarian-carcinoma
#1
Ulrike Unger, Carsten Denkert, Ioana Braicu, Jalid Sehouli, Manfred Dietel, Sibylle Loibl, Silvia Darb-Esfahani
HER3 is a member of the epidermal growth factor family and was predominantly described as a negative prognostic factor in various solid tumors as well as in ovarian cancer. In this study, we investigated HER3 on protein and mRNA expression in histologically defined subtypes of ovarian cancer looking for an influence on patient's survival. Altogether, we examined HER3 in ovarian high-grade serous (HGSC, n = 320), low-grade serous (LGSC, n = 55), endometrioid (EC, n = 33), and clear cell (CCC, n = 48) carcinomas using immunohistochemistry (IHC) and quantitative real-time reverse transcription PCR (qRT-PCR)...
December 2, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27912078/mouse-double-minute-2-homolog-actively-suppresses-p53-activity-in-oocytes-during-mouse-folliculogenesis
#2
Chen-Xi Zhang, Qin Zhang, Yin-Yin Xie, Xue-Yan He, Cong Xiang, Xiao-Shuang Hou, Ying Zhou, Lai Chen, Guo-Xin Zhang, Geng Liu
The p53 signaling network is indispensible in cellular stress responses and tumor suppression. Negative regulations of p53 by mouse double minute 2 and 4 homologs (MDM2) and (MDM4) are an integrated component of the network and have been implicated in regulating the stress responses and the maintenance of normal development and homeostasis of multiple somatic cell lineages. However, the regulatory role of MDM2 on p53 and stress responses in female germ cells remains undetermined. Here, we used the Cre-loxP system to delete Mdm2 in oocytes at different stages of folliculogenesis in mice...
November 29, 2016: American Journal of Pathology
https://www.readbyqxmd.com/read/27911274/high-expression-of-mucin13-associates-with-grimmer-postoperative-prognosis-of-patients-with-non-metastatic-clear-cell-renal-cell-carcinoma
#3
Zhiying Xu, Yidong Liu, Yuanfeng Yang, Jieti Wang, Guodong Zhang, Zheng Liu, Hangcheng Fu, Zewei Wang, Haiou Liu, Jiejie Xu
BACKGROUND: Mucin13 (MUC13) is a transmembrane glycoprotein that is aberrantly expressed in ovarian and gastro-intestinal tumors, but its role in renal cell carcinoma remains elusive. The purpose of this study is to evaluate the prognostic value of MUC13 expression in patients with non-metastatic clear cell renal cell carcinoma (ccRCC) after surgical resection. RESULTS: MUC13 high expression was associated with high Fuhrman grade (p < 0.001), high SSIGN score (p = 0...
November 29, 2016: Oncotarget
https://www.readbyqxmd.com/read/27908969/synthesis-and-evaluation-of-the-new-estrogen-receptor-%C3%AE-selective-radioligand-18f-fhnp-comparison-with-18f-fes
#4
Inês F Antunes, Aren van Waarde, Rudi A Dierckx, Elisabeth G E de Vries, Geke A P Hospers, Erik F de Vries
: Estrogen receptors (ER) are targets for endocrine treatment of estrogen-dependent cancers. The ER consists of 2 isoforms, ERα and ERβ, which have distinct biological functions. While activation of ERα stimulates cell proliferation and cell survival, ERβ promotes apoptosis. Positron emission tomography (PET) of ERα and ERβ levels could provide more insight in response to hormonal treatment. 16α-(18)F-Fluoro-17β-estradiol ((18)F-FES) is a PET tracer for ER with relative selectivity for ERα...
December 1, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27907908/prevalence-and-clinical-significance-of-brca1-2-germline-and-somatic-mutations-in-taiwanese-patients-with-ovarian-cancer
#5
Angel Chao, Ting-Chang Chang, Nina Lapke, Shih-Ming Jung, Peter Chi, Chien-Hung Chen, Lan-Yan Yang, Cheng-Tao Lin, Huei-Jean Huang, Hung-Hsueh Chou, Jui-Der Liou, Shu-Jen Chen, Tzu-Hao Wang, Chyong-Huey Lai
Germline and somatic BRCA1/2 mutations define a subset of patients with ovarian cancer who may benefit from treatment with poly (ADP-ribose) polymerase inhibitors. Unfortunately, data on the frequency of BRCA1/2 germline mutations in Taiwanese patients with ovarian cancer are scarce, with the prevalence of somatic mutations being unknown. We aim to investigate the occurrence of BRCA1/2 mutations in 99 Taiwanese patients with ovarian cancer which included serous (n = 46), endometrioid (n = 24), and clear cell (n = 29) carcinomas...
November 19, 2016: Oncotarget
https://www.readbyqxmd.com/read/27899985/possible-role-of-thymidine-phosphorylase-in-gynecological-tumors-as-an-individualized-treatment-strategy
#6
Masako Shida, Masanori Yasuda, Mariko Fujita, Masaki Miyazawa, Hiroshi Kajiwara, Takeshi Hirasawa, Masae Ikeda, Naruaki Matsui, Toshinari Muramatsu, Mikio Mikami
Thymidine phosphorylase (TP) is structurally similar to platelet-derived endothelial cell growth factor, and it activates 5-fluorouracil (5-FU) prodrugs and also promotes angiogenesis. In the present study, the possibility of using TP expression as a biomarker for 5-FU prodrugs, and the significance of TP as an angiogenic factor, were investigated in patients with gynecological tumors. The subjects enrolled in the study were 188 patients with gynecological tumors who provided informed consent and underwent tumor resection at the Department of Obstetrics and Gynecology of Tokai University Hospital between February 2002 and January 2010...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27899771/-perspectives-of-individualized-treatment-by-genome-wide-analyses-in-ovarian-cancer
#7
Noriomi Matsumura, Ken Yamaguchi, Ryusuke Murakami, Masaki Mandai, Ikuo Konishi
Genome-wide analyses have recently been reported for ovarian cancer. High-grade serous ovarian carcinoma(HGSOC) almost exclusively harbor TP53 mutations and prominent copy number aberrations. Approximately 20% of HGSOCs harbor BRCA mutations, in which case PARP inhibitors may be effective. HGSOCs are classified into 4 molecular subtypes with distinct histopathological features by transcriptional profiling. These subtypes differ in prognosis and drug sensitivity. Additionally, a whole-genome analysis for HGSOC has revealed various factors that can induce resistance to chemotherapy...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/27885265/the-disparate-origins-of-ovarian-cancers-pathogenesis-and-prevention-strategies
#8
Anthony N Karnezis, Kathleen R Cho, C Blake Gilks, Celeste Leigh Pearce, David G Huntsman
Ovarian cancer is the fifth cause of cancer-related death in women and comprises a histologically and genetically broad range of tumours, including those of epithelial, sex cord-stromal and germ cell origin. Recent evidence indicates that high-grade serous ovarian carcinoma, clear cell carcinoma and endometrioid carcinoma primarily arise from tissues that are not normally present in the ovary. These histogenetic pathways are informing risk-reduction strategies for the prevention of ovarian and ovary-associated cancers and have highlighted the importance of the seemingly unique ovarian microenvironment...
November 25, 2016: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/27873496/ovarian-clear-cell-carcinoma-sub-typing-by-arid1a-expression
#9
Jae Yoon Choi, Hyun Ho Han, Young Tae Kim, Joo Hyun Lee, Baek Gil Kim, Suki Kang, Nam Hoon Cho
PURPOSE: Loss of AT-rich DNA-interacting domain 1A (ARID1A) has been identified as a driving mutation of ovarian clear cell carcinoma (O-CCC), a triple-negative ovarian cancer that is intermediary between serous and endometrioid subtypes, in regards to molecular and clinical behaviors. However, about half of O-CCCs still express BAF250a, the protein encoded by ARID1A. Herein, we aimed to identify signatures of ARID1A-positive O-CCC in comparison with its ARID1A-negative counterpart. MATERIALS AND METHODS: Seventy cases of O-CCC were included in this study...
January 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/27872893/response-to-sunitinib-sutent-in-chemotherapy-refractory-clear-cell-ovarian-cancer
#10
C Alifrangis, A Thornton, C Fotopoulou, J Krell, H Gabra
•Case describes a response to sunitinib in clear cell ovarian cancer.•Discussion of unique molecular characteristics of clear cell ovarian cancers•Practical points regarding dosing and toxicity when using sunitinib discussed.
November 2016: Gynecologic Oncology Reports
https://www.readbyqxmd.com/read/27869446/-oncopathological-aspects-of-brca1-and-brca2-genes-inactivation-in-tumors-of-ovary-fallopian-tube-and-pelvic-peritoneum
#11
Petr Škapa, Pavel Dundr
Ovarian carcinoma represents a heterogeneous group of malignant epithelial tumors which could be divided into two fundamental groups: Type I (endometrioid carcinoma, clear cell carcinoma, low grade serous carcinoma, mucinous carcinoma and more rare seromucinous carcinoma and malignant Brenner tumor) and type II (high grade serous carcinoma - HGSC). HGSC is the most frequent ovarian carcinoma which may be etiologically linked to inactivation of tumor suppressor genes BRCA1/2 and TP53 and differs from type I carcinomas by higher aggressiveness, tendency to peritoneal spread and worse prognosis...
2016: Ceskoslovenská Patologie
https://www.readbyqxmd.com/read/27848251/allergen-removed-rhus-verniciflua-extract-induces-ovarian-cancer-cell-death-via-jnk-activation
#12
Se-Hui Kang, In-Hu Hwang, Eunju Son, Chong-Kwan Cho, Jong-Soon Choi, Soo-Jung Park, Byeong-Churl Jang, Kyung-Bok Lee, Zee-Won Lee, Jong Hoon Lee, Hwa-Seung Yoo, Ik-Soon Jang
Nuclear factor-[Formula: see text]B (NF-[Formula: see text]B)/Rel transcription factors are best known for their central roles in promoting cell survival in cancer. NF-[Formula: see text]B antagonizes tumor necrosis factor (TNF)-[Formula: see text]-induced apoptosis through a process involving attenuation of the c-Jun-N-terminal kinase (JNK). However, the role of JNK activation in apoptosis induced by negative regulation of NF-[Formula: see text]B is not completely understood. We found that allergen-removed Rhus verniciflua Stokes (aRVS) extract-mediated NF-[Formula: see text]B inhibition induces apoptosis in SKOV-3 ovarian cancer cells via the serial activation of caspases and SKOV-3 cells are most specifically suppressed by aRVS...
November 16, 2016: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/27845267/protective-effects-and-mechanisms-investigation-of-kuntai-capsule-on-the-ovarian-function-of-a-novel-model-with-accelerated-aging-ovaries
#13
Jinjin Zhang, Li Fang, Liangyan Shi, Zhiwen Lai, Zhiyong Lu, Jiaqiang Xiong, Meng Wu, Aiyue Luo, Shixuan Wang
ETHNOPHARMACOLOGICAL RELEVANCE: Kuntai capsule, a traditional Chinese medicine, has been widely used for the clinical treatment of menopausal syndrome. However, its mechanisms remain poorly understood. Considering that aging ovaries are the primary cause of menopause, this study was designed to investigate the effects and mechanisms of Kuntai capsule on ovarian function in a novel mice model with accelerated aging ovaries. MATERIALS AND METHODS: Seventy-five female C57BL/6 mice were chosen for this study...
November 11, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27833758/rare-and-challenging-case-of-stroke-as-a-manifestation-of-non-bacterial-thrombotic-endocarditis-in-an-underlying-ovarian-clear-cell-carcinoma
#14
Vijayabharathy Kanthasamy, Indira Natarajan
Non bacterial thrombotic endocarditis presenting as a stroke is a rare presentation as a result of an underlying occult ovarian clear cell adenocarcinoma. Embolic events secondary to non bacterial thrombotic endocarditis are potentially a life-threatening condition if not diagnosed and treated promptly. High clinical suspicion for an underlying neoplasm is one of the key elements to be considered in the management of non bacterial thrombotic endocarditis. Systemic anticoagulation will treat as well as prevent further thromboembolic events...
November 2016: JRSM Open
https://www.readbyqxmd.com/read/27816923/cryopreservation-of-ovarian-tissue-for-fertility-preservation-in-a-large-cohort-of-young-girls-focus-on-pubertal-development
#15
A K Jensen, C Rechnitzer, K T Macklon, M R S Ifversen, N Birkebæk, N Clausen, K Sørensen, J Fedder, E Ernst, C Yding Andersen
STUDY QUESTION: Is there an association between the need for medical puberty induction and the diagnosis or treatment received in girls who have undergone cryopreservation of ovarian tissue for fertility preservation? SUMMARY ANSWER: There was a clear association between the intensity of treatment received and requirement for medical puberty induction but no association with the diagnosis. WHAT IS KNOWN ALREADY: Although it cannot be predicted which girls will become infertile or develop premature ovarian insufficiency (POI) following intensive chemotherapy or irradiation, patients who are at high risk of POI should be offered ovarian tissue cryopreservation (OTC)...
November 5, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27812929/mir-212-132-is-epigenetically-downregulated-by-sox4-ezh2-h3k27me3-feedback-loop-in-ovarian-cancer-cells
#16
Lin Lin, Zhiwen Wang, Haihong Jin, Hongzhen Shi, Zhihong Lu, Zhenqin Qi
Both miR-212 and miR-132 are usually downregulated in ovarian cancer and act as tumor suppressors. However, the mechanism of their downregulation in ovarian cancer is not clear. In this study, we investigated the regulative effects of miR-212 and miR-132 on SOX4 expression in ovarian cancer cells and also studied whether there is a feedback regulation between miR-212/miR-132 and SOX4 via an epigenetic mechanism. The results showed that both EZH2 and SOX4 overexpressions significantly repressed miR-212 and miR-132 expressions in SKOV3 and OV2008 cells...
November 3, 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/27810483/tea-coffee-and-caffeinated-beverage-consumption-and-risk-of-epithelial-ovarian-cancers
#17
Andy C Y Leung, Linda S Cook, Kenneth Swenerton, Blake Gilks, Richard P Gallagher, Anthony Magliocco, Helen Steed, Martin Köbel, Jill Nation, Angela Brooks-Wilson, Nhu D Le
BACKGROUND: The risk for epithelial ovarian cancer associated with the consumption of caffeinated beverages (tea, coffee, and soft drinks) and green tea is inconclusive. However, few studies have investigated the type of caffeinated beverage or the type of tea. OBJECTIVE: We assessed consumption of tea (black/caffeinated tea and green tea separately), coffee, and caffeinated soft drinks, as well as level of consumption, and the risk for epithelial ovarian cancer and its histotypes...
December 2016: Cancer Epidemiology
https://www.readbyqxmd.com/read/27807188/autophagy-induction-results-in-enhanced-anoikis-resistance-in-models-of-peritoneal-disease
#18
James L Chen, Jason David, Douglas Cook-Spaeth, Sydney Casey, David Cohen, Karuppaiyah Selvendiran, Tanios Bekaii-Saab, John Hays
: Peritoneal carcinomatosis and peritoneal sarcomatosis (PC/PS) is a potential complication of nearly all solid tumors and results in profoundly increased morbidity and mortality. Despite the ubiquity of PC/PS, there are no clinically relevant targeted therapies for either its treatment or prevention. To identify potential therapies, we developed in vitro models of PC/PS using tumor cell lines and patient-derived spheroids (PDS) that recapitulate anoikis resistance and spheroid proliferation across multiple cancer types...
November 2, 2016: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/27798689/clinical-significance-of-tissue-factor-pathway-inhibitor-2-a-serum-biomarker-candidate-for-ovarian-clear-cell-carcinoma
#19
Noriaki Arakawa, Hiroshi Kobayashi, Naohiro Yonemoto, Yusuke Masuishi, Yoko Ino, Hiroshi Shigetomi, Naoto Furukawa, Norihisa Ohtake, Yohei Miyagi, Fumiki Hirahara, Hisashi Hirano, Etsuko Miyagi
BACKGROUND: There is currently no reliable serum biomarker for ovarian clear cell carcinoma (CCC), a highly lethal histological subtype of epithelial ovarian cancer (EOC). Previously, using a proteome-based approach, we identified tissue factor pathway inhibitor 2 (TFPI2) as a candidate serum biomarker for CCC. In this study, we sought to evaluate the clinical diagnostic performance of TFPI2 in preoperative prediction of CCC. METHODS: Serum TFPI2 levels were measured in serum samples from a retrospective training set consisting of patients with benign and borderline ovarian tumors, EOC subtypes, and uterine diseases...
2016: PloS One
https://www.readbyqxmd.com/read/27797222/histological-subtype-of-ovarian-cancer-as-a-determinant-of-sensitivity-to-formamidine-derivatives-of-doxorubicin-in-vitro-comparative-studies-with-skov-3-and-es-2-cancer-cell-lines
#20
M Denel-Bobrowska, M Lukawska, I Oszczapowicz, A Marczak
BACKGROUND: Development of new apoptosis-inducing drugs is a promising trend in anticancer therapy. For this purpose several formamidinoderivatives of doxorubicin were synthesized. The aim of our study was to investigate effects of the five formamidinodoxorubicins in the ES-2 human ovarian clear cell carcinoma line, for comparison with data obtained previously for SKOV-3 human ovarian adenocarcinoma cells, to answer the question of whether and to what extent the histological cell type is a possible determinant of sensitivity to tested anthracyclines...
2016: Asian Pacific Journal of Cancer Prevention: APJCP
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