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https://www.readbyqxmd.com/read/28726781/autophagy-inhibition-reduces-chemoresistance-and-tumorigenic-potential-of-human-ovarian-cancer-stem-cells
#1
Anna Pagotto, Giorgia Pilotto, Elena Laura Mazzoldi, Maria Ornella Nicoletto, Simona Frezzini, Anna Pastò, Alberto Amadori
Epithelial ovarian cancer (EOC) is one of the most malignant gynecological tumors with a high mortality rate owing to tumor relapse after anticancer therapies. It is widely accepted that a rare tumor cell population, known as cancer stem cells (CSC), is responsible for tumor progression and relapse; intriguingly, these cells are able to survive nutrient starvation (such as in vitro culture in the absence of glucose) and chemotherapy treatment. Recent data also indicated that chemotherapy resistance is associated with autophagy activation...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28718377/downregulation-of-tyrosine-threonine-kinase-inhibits-tumor-growth-via-g2-m-arrest-in-human-endometrioid-endometrial-adenocarcinoma
#2
Jiamiao Zhang, Yan Jiang, Yu Zhao, Wanxue Wang, Yiran Xie, Huating Wang, Yihua Yang
Endometrial cancer is the most common gynecologic malignancy, about 80% of which is endometrial endometrioid carcinoma. Dysregulation of spindle assembly checkpoint plays a vital role in endometrial endometrioid carcinoma tumorigenesis and progression. The purpose of this study was to explore how tyrosine threonine kinase, a spindle assembly checkpoint-related protein, promotes the endometrial endometrioid carcinoma progression. We found that both messenger RNA and protein levels of tyrosine threonine kinase in endometrial endometrioid carcinoma tissues are higher than those in normal endometrial tissues, and its expression is associated with tumor stages...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28718374/cancer-associated-fibroblasts-secrete-fgf-1-to-promote-ovarian-proliferation-migration-and-invasion-through-the-activation-of-fgf-1-fgfr4-signaling
#3
Yuanzhen Sun, Xiaoli Fan, Qing Zhang, Xiaoyu Shi, Guangwei Xu, Cuimin Zou
Ovarian cancer is the most lethal gynecologic malignancy, due to its high propensity for metastasis. Cancer-associated fibroblasts, as the dominant component of tumor microenvironment, are crucial for tumor progression. However, the mechanisms underlying the regulation of ovarian cancer cells by cancer-associated fibroblasts remain little known. Here, we first isolated cancer-associated fibroblasts from patients' ovarian tissues and found that cancer-associated fibroblasts promoted SKOV3 cells' proliferation, migration, and invasion...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28718209/new-knowledge-and-insights-about-the-malignant-transformation-of-endometriosis
#4
Fuminori Taniguchi
Endometriosis may be a definitive risk factor for ovarian cancer, the most fatal gynecological cancer. The ability of endometriosis to transform into malignancy, first described by Dr. Sampson in 1925, is considered a rare occurrence, affecting approximately 1% of ovarian endometriomas. Recently we conducted a retrospective study regarding the malignant transformation of endometriosis in Japanese women. Many studies have reported a consistent correlation between endometriosis and ovarian cancer according to histological subtypes...
July 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28714011/mangiferin-induces-apoptosis-in-human-ovarian-adenocarcinoma-ovcar3-cells-via-the-regulation-of-notch3
#5
Bingyu Zou, Hailian Wang, Yilong Liu, Ping Qi, Tiantian Lei, Minghan Sun, Yi Wang
Ovarian cancer is the most lethal gynecological malignancy in the world. Our previous studies showed that mangiferin, purified from plant source, possessed anti-neoplasm effect on human lung adenocarcinoma A549 cells. This study aimed to determine the apoptosis-inducing effect of mangiferin on human ovarian carcinoma OVCAR3 cells. By in vitro studies, we found mangiferin significantly inhibited viability of OVCAR3 cells, and remarkably increased the sensitivity of OVCAR3 cells to cisplatin. In addition, the activation of caspase-dependent apoptosis was observed in mangiferin treated ovarian cancer cells...
July 13, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28706445/histone-demethylase-kdm2b-upregulates-histone-methyltransferase-ezh2-expression-and-contributes-to-the-progression-of-ovarian-cancer-in-vitro-and-in-vivo
#6
Yan Kuang, Fangfang Lu, Jianfeng Guo, Hong Xu, Qi Wang, Chaohuan Xu, Longjia Zeng, Suyi Yi
Aberrant histone methylation contributes to the progression and development of many tumors. Histone methylation is a dynamic process regulated by both histone demethylase and histone methyltransferase, which ultimately alters the levels of gene transcription. However, the relationship between histone demethylase and histone methyltransferase, as well as their regulatory mechanisms in ovarian cancer development, is still unclear. Lysine-specific demethylase 2B (KDM2B) is a key demethylase of H3K36me3 and H3K4me3 that regulates gene expression and plays a role in tumorigenesis via epigenetic mechanisms...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28706361/opportunistic-salpingectomy-as-an-ovarian-cancer-primary-prevention-strategy
#7
Geetha Balsarkar
Ovarian cancer is the most lethal form of all gynecologic malignancies. The presenting clinical symptoms of ovarian cancer are very vague and often appear late in the course of disease. Hence, most patients are diagnosed at later stages. At present, there is no effective screening of ovarian cancer. Primary prevention could be considered a strategy to decrease the mortality from ovarian cancer, not only in women at high risk but also in those at low risk. Most "ovarian cancers," and more specifically the high-grade serous carcinoma (HGSC) subtype of ovarian cancer, actually could originate in the fallopian tube...
August 2017: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/28705408/superior-in-vitro-and-in-vivo-activity-of-trastuzumab-emtansine-t-dm1-in-comparison-to-trastuzumab-pertuzumab-and-their-combination-in-epithelial-ovarian-carcinoma-with-high-her2-neu-expression
#8
Gulden Menderes, Elena Bonazzoli, Stefania Bellone, Gary Altwerger, Jonathan D Black, Katherine Dugan, Francesca Pettinella, Alice Masserdotti, Francesco Riccio, Anna Bianchi, Luca Zammataro, Christopher de Haydu, Natalia Buza, Pei Hui, Serena Wong, Gloria S Huang, Babak Litkouhi, Elena Ratner, Dan-Arin Silasi, Masoud Azodi, Peter E Schwartz, Alessandro D Santin
BACKGROUND: Epithelial ovarian cancer (EOC) remains the most lethal gynecologic malignancy. The objective of this study was to compare the anti-tumor activity of HER2/neu-targeting monoclonal antibodies, trastuzumab (T), pertuzumab (P), combination of trastuzumab and pertuzumab (T+P) and trastuzumab-emtansine (T-DM1) in EOC with high HER2/neu expression. METHODS: Primary EOC cell lines were established and cell blocks were analyzed for HER2/neu expression. Cytostatic, apoptotic and antibody-dependent cell-mediated cytotoxicity (ADCC) activities of T, P, T+P and T-DM1 were evaluated in vitro...
July 10, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28705370/magnetic-resonance-imaging-of-gynecological-malignancies-role-in-personalized-management
#9
Abhishek Mahajan, Nilesh P Sable, Palak B Popat, Puneet Bhargava, Kiran Gangadhar, Meenakshi H Thakur, Supreeta Arya
Gynecological malignancies are a leading cause of mortality and morbidity in women and pose a significant health problem around the world. Currently used staging systems for management of gynecological malignancies have unresolved issues, the most important being recommendations on the use of imaging. Although not mandatory as per the International Federation of Gynecology and Obstetrics recommendations, preoperative cross-sectional imaging is strongly recommended for adequate and optimal management of patients with gynecological malignancies...
June 2017: Seminars in Ultrasound, CT, and MR
https://www.readbyqxmd.com/read/28703277/mirnas-and-ovarian-cancer-an-overview
#10
REVIEW
Bornali Deb, Arif Uddin, Supriyo Chakraborty
Ovarian cancer (OC) is the sixth most common cancer in women globally. However, even with the advances in detection andtherapeutics it still represents the most dangerous gynecologic malignancy in women of the industrialized countries. The discovery of micro- RNAs (miRNA), a small noncoding RNA molecule targeting multiple mRNAs and regulation of gene expression by triggering translation repression and/or RNA degradation, has revealed the existence of a new array for regulation of genes involved in cancer. This review summarizes the current knowledge regarding the role of miRNAs expression in OC...
July 13, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28700431/methods-for-measuring-and-staging-a-uterine-cervical-adenocarcinoma-showing-intracystic-papillary-growth-a-case-report
#11
Hiroshi Yoshida, Shunichi Ikeda, Takafumi Tsukada, Reiko Watanabe, Nobuyoshi Hiraoka, Tomoyasu Kato
Endocervical adenocarcinomas usually demonstrate infiltrative and/or destructive invasion, and the depth and horizontal extent of the invasion are known to have prognostic utility. Here, we report the unusual case of a patient with endocervical adenocarcinoma showing intracystic papillary growth and discuss our methods for measuring and staging this lesion. A 45-yr-old Japanese woman (gravida, 0; para, 0) underwent a cone biopsy for squamous cell carcinoma in situ and atypical glandular cells. Macroscopically, an intracystic tumor (∼7...
July 11, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28700426/coexisting-primary-ovarian-and-omental-hydatid-disease-mimicking-an-ovarian-neoplasm-a-case-report
#12
Emre E Tas, Gulin F Yegin Akcay, Fatma Yildirim, Filiz Yavuz
Hydatid disease is a parasitic infection that most commonly affects the liver and lungs, although the disease can arise in any part of the body. Cysts may mimic many benign and malignant conditions. The diagnosis cannot be confirmed preoperatively in all cases. A 44-yr-old menopausal woman was admitted to the department of gynecology with complaints of abdominal distention. A fixed abdominopelvic mass was identified. Radiology revealed a 20-cm mass with branched septations and solid components. CA-125 level was 55 kU/L, and Risk of Malignancy Index-2 score was 880...
July 11, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28700424/uterine-carcinosarcomas-clinical-histopathologic-and-immunohistochemical-characteristics
#13
Xiaowei Chen, Rebecca Arend, Diane Hamele-Bena, Ana I Tergas, Melanie Hawver, Guo-Xia Tong, Thomas C Wright, Jason D Wright
Carcinosarcomas (malignant mixed Müllerian tumors or MMMT) are rare malignant tumors in the female genital tract composed of both malignant epithelial and malignant mesenchymal components. They comprise <5% of all neoplasms in the gynecologic tract and have an aggressive clinical course. The purpose of this study is to evaluate the immunophenotype and possible histogenesis of carcinosarcomas of the uterus. Sixty-two cases of uterine carcinosarcomas diagnosed between 1995 and 2011 were retrieved from the gynecologic pathology files at Columbia University Medical Center...
July 11, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28697106/readmission-after-gynecologic-surgery-a-comparison-of-procedures-for-benign-and-malignant-indications
#14
Lori Cory, Nawar Latif, Colleen Brensinger, Xiaochen Zhang, Robert L Giuntoli, Robert A Burger, Mark Morgan, Emily Ko
OBJECTIVE: To compare 30-day postsurgical readmission rates and associated risk factors for readmission among women undergoing gynecologic surgery for benign and malignant conditions. METHODS: In a retrospective cohort study, we identified patients after surgery for benign and malignant gynecologic conditions in the National Surgical Quality Improvement Program database between January 1, 2011, and December 31, 2012. Data collected included surgical factors, perioperative characteristics, surgical complications, and 30-day readmissions...
July 7, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28693146/inhibition-of-paclitaxel-resistance-and-apoptosis-induction-by-cucurbitacin-b-in-ovarian-carcinoma-cells
#15
Yingchun Qu, Peifang Cong, Chengjiang Lin, Yihui Deng, Jesse Li-Ling, Meixia Zhang
Ovarian cancer is the leading cause of mortality among all gynecological malignancies. Drug resistance is a cause of ovarian cancer recurrence and low rate of overall survival. There is a requirement for more effective treatment approaches. Cucurbitacin B (CuB) is an antineoplastic agent derived from traditional Chinese medicinal herbs. Its activity against paclitaxel-resistant human ovarian cancer cells has, however, not yet been established. The purpose of the present study was to investigate the effect and mechanism of CuB on human paclitaxel-resistant ovarian cancer A2780/Taxol cells...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28691671/bilateral-primary-ovarian-non-hodgkin-s-lymphoma-and-fertility-preservation-5-year-follow-up
#16
C Grigoriadis, A Tympa, A Chasiakou, S Baka, D Botsis, D Hassiakos
AIM: Primary ovarian non-Hodgkin's lymphoma is a very rare disease. Median age at diagnosis is estimated at 42 years, something that leads to fertility preservation issues in many cases. This was a case report study, presenting a rare case of bilateral primary ovarian non-Hodgkin's lymphoma. CASE REPORT: A 38-year old nulliparous woman, underwent exploratory laparotomy because of bilateral ovarian masses. Left salpingooophorectomy, partial omentectomy and excision of an ovarian mass of the right ovary was performed...
March 2017: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/28690541/the-significance-of-the-sulfatase-pathway-for-local-estrogen-formation-in-endometrial-cancer
#17
Maša Sinreih, Tamara Knific, Maja Anko, Neli Hevir, Katja Vouk, Aleš Jerin, Snježana Frković Grazio, Tea Lanišnik Rižner
Endometrial cancer (EC) is the most common estrogen-dependent gynecological malignancy in the developed World. To investigate the local formation of estradiol (E2), we first measured the concentrations of the steroid precursor androstenedione (A-dione) and the most potent estrogen, E2, and we evaluated the metabolism of A-dione, estrone-sulfate (E1-S), and estrone (E1) in cancerous and adjacent control endometrium. Furthermore, we studied expression of the key genes for estradiol formation via the aromatase and sulfatase pathways...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28679774/syd985-a-novel-duocarmycin-based-her2-targeting-antibody-drug-conjugate-shows-antitumor-activity-in-uterine-and-ovarian-carcinosarcoma-with-her2-neu-expression
#18
Gulden Menderes, Elena Bonazzoli, Stefania Bellone, Jonathan D Black, Federica Predolini, Francesca Pettinella, Alice Masserdotti, Luca Zammataro, Gary Altwerger, Natalia Buza, Pei Hui, Serena Wong, Babak Litkouhi, Elena Ratner, Dan-Arin Silasi, Masoud Azodi, Peter E Schwartz, Alessandro D Santin
Purpose: Carcinosarcomas (CS) are highly aggressive gynecologic malignancies containing both carcinomatous and sarcomatous elements with heterogeneous HER2/neu expression. We compared the efficacy of SYD985, (Synthon Biopharmaceuticals BV), a novel HER2-targeting antibody-drug conjugate (ADC), to Trastuzumab emtansine (T-DM1, Genentech-Roche) against primary uterine and ovarian CS. <p>Experimental Design: Eight primary CS cell lines were evaluated for HER2/neu surface expression by IHC and gene amplification by FISH assays...
July 5, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28673874/post-operative-outcomes-after-single-port-laparoscopic-removal-of-adnexal-masses-in-patients-referred-to-gynecologic-oncology-at-a-large-academic-center
#19
Laura J Moulton, Amelia M Jernigan, Chad M Michener
OBJECTIVE: To report surgical and pathologic outcomes after single port laparoscopy (SPL) for adnexal masses in patients referred to a gynecologic oncology practice at a single academic institution. DESIGN: Retrospective analysis (Canadian Task Force Classification II.2). SETTING: A single academic institution with multiple hospital centers PATIENTS: Women who underwent at least one single port laparoscopic surgery for treatment of an adnexal mass from 2009-2015 after referral to a gynecologic oncology practice...
June 30, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28671040/high-expressions-of-bcl6-and-lewis-y-antigen-are-correlated-with-high-tumor-burden-and-poor-prognosis-in-epithelial-ovarian-cancer
#20
Liancheng Zhu, Huilin Feng, Shan Jin, Mingzi Tan, Song Gao, Huiyu Zhuang, Zhenhua Hu, Huimin Wang, Zuofei Song, Bei Lin
Aberrant regulation of BCL6 plays crucial oncogenic roles in various malignant tumors; howbeit, the function of BCL6 in tumorigenesis of ovarian cancer remains unclear. The aim of this study is to investigate the role of BCL6 in ovarian cancer. The methods of immunohistochemical staining, quantitative real-time polymerase chain reaction, immunocytochemical staining, and gene expression profile enrichment analysis were performed to identify the possible role of BCL6 in ovarian cancer. We observed that the expression of BCL6 was significantly higher in ovarian cancer tissues and correlated with higher tumor burden including advanced International Federation of Gynecology and Obstetrics stages, poor differentiation, Type II ovarian cancer, the presence of >1 cm residual tumor size, and appearance of recurrence or death (all p < 0...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
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