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https://www.readbyqxmd.com/read/29457758/appraising-cervical-mucus-a-new-approach-to-evaluating-contraceptives
#1
Leo Han, Emily Padua, Alison Edelman, Jeffrey T Jensen
PURPOSE: Timing of sample collection represents a major source of variability in studies evaluating the effects of administered agents on cervical mucus in naturally-cycling women. We sought to create and validate an artificial model of the cervical mucus cycle using exogenous E2 and P4 replacement in ovarian suppressed women. MATERIALS AND METHODS: We conducted a prospective experiment (clinicaltrials.gov, NCT02969590) examining cervical mucus changes in six women during natural and artificial menstrual cycles [leuprolide acetate, estradiol transdermal patch (0...
February 19, 2018: European Journal of Contraception & Reproductive Health Care
https://www.readbyqxmd.com/read/29457123/general-anesthesia-with-propofol-for-ovarian-teratoma-excision-associated-with-anti-n-methyl-d-aspartate-receptor-encephalitis
#2
Masami Sato, Hiroaki Yasumoto, Toshiyuki Arai
Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is an autoimmune disorder caused by production of anti-NMDAR antibodies that is often associated with ovarian teratoma and exhibits various manifestations including psychiatric symptoms, seizures, hypoventilation, and autonomic nerve instability. Patients with this disorder who receive early surgical tumor resection along with immunotherapy have better outcome than the rest of the patients. To establish an anesthetic plan, it is important to understand the pharmacological interaction between the anesthetic agents and the disabled NMDAR, because NMDAR is one of the major sites of action for commonly-used anesthetic agents...
2018: JA Clin Rep
https://www.readbyqxmd.com/read/29456806/women-with-hereditary-breast-cancer-predispositions-should-avoid-using-their-smartphones-tablets-and-laptops-at-night
#3
EDITORIAL
Seyed Ali Reza Mortazavi, Seyed Mohammad Javad Mortazavi
Breast cancer is the most common malignancy among women, both in the developed and developing countries. Women with mutations in the BRCA1 and BRCA2 genes have an increased risk of breast and ovarian cancers. Recent studies show that short-wavelength visible light disturb the secretion of melatonin and causes circadian rhythm disruption. We have previously studied the health effects of exposure to different levels of radiofrequency electromagnetic fields (RF-EMFs) such as mobile phones, mobile base stations, mobile phone jammers, laptop computers, and radars...
February 2018: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29456744/cardamonin-enhances-the-anti-proliferative-effect-of-cisplatin-on-ovarian-cancer
#4
Peiguang Niu, Daohua Shi, Shusheng Zhang, Yanting Zhu, Jintuo Zhou
The mammalian target of rapamycin (mTOR) is well-known as a promising therapeutic target in various cancer cells. mTOR activation decreases the sensitivity of ovarian cancer to cisplatin. Cardamonin inhibits the proliferation of various cancer cells by mTOR suppression. The present study examined whether cardamonin combined with cisplatin is efficacious for the anti-proliferation of ovarian cancer cells. The anti-proliferative effect was determined by MTT and cell cycle assays. Activation of the mTOR signal pathway and the expression of anti-apoptotic proteins were evaluated by western blot analysis...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29455183/the-effect-of-lncrna-hotair-on-chemoresistance-of-ovarian-cancer-through-regulation-of-hoxa7
#5
Siwei Liu, Huajiang Lei, Fangyuan Luo, Yilin Li, Lan Xie
This study aimed at investigating the biological functions of long non-coding RNAs (lncRNAs) hox transcript antisense intergenic RNA (HOTAIR) in resistant ovarian cancer cells, exploring the regulation effect of HOTAIR on HOXA7, and investigating their influence on the chemosensitivity of ovarian cancer cells. Quantitative real-time polymerase chain reaction (qRT-PCR) was applied for the verification of HOTAIR expression in resistant and sensitive groups. How HOTAIR downregulation affected cell proliferation, migration and invasion, and apoptosis were determined using the MTT assay and the colony formation assay, the Transwell assay and flow cytometry analysis, respectively...
February 19, 2018: Biological Chemistry
https://www.readbyqxmd.com/read/29453653/tight-interplay-in-early-pregnancy-between-follistatin-and-anti-mullerian-hormone-in-women-with-polycystic-ovarian-syndrome-pcos
#6
Angela Köninger, Antje Kampmeier, Pawel Mach, Boerge Schmidt, Thomas Strowitzki, Rainer Kimmig, Alexandra Gellhaus
PURPOSE: Follistatin levels increase during the course of pregnancy and may play a role in ovarian arrest, reflected by the simultaneous decrease of anti-mullerian-hormone (AMH) levels. The aim of the study was to investigate AMH and follistatin levels during the hormonal window at the beginning of pregnancy. Since both parameters are described as deregulated in polycystic ovarian syndrome (PCOS), subgroup analysis of PCOS patients may additionally elucidate their interplay and effects on ovarian activity...
February 16, 2018: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29451900/the-arid1a-p53-and-%C3%A3-catenin-statuses-are-strong-prognosticators-in-clear-cell-and-endometrioid-carcinoma-of-the-ovary-and-the-endometrium
#7
Marlene Heckl, Elisa Schmoeckel, Linda Hertlein, Miriam Rottmann, Udo Jeschke, Doris Mayr
AIM: The objective of this study was to evaluate the prognostic value of ARID1A, p53, p21, p16 and ß-Catenin in endometrioid and clear cell ovarian and endometrial carcinomas. MATERIALS AND METHODS: 97 tumors were available for analysis of ARID1A, p53, p21, p16 and ß-Catenin with the techniques of tissue microarray and immunohistochemistry. 32 were ovarian carcinomas and 65 were endometrial carcinomas. RESULTS: Endometrioid ovarian carcinomas showed negative staining for ARID1A (a) and p21 (b), aberrant expression of p53 (c) and p16 (d) and ß-Catenin positive nuclear expression (e) respectively in 19% (a), 100% (b), 28...
2018: PloS One
https://www.readbyqxmd.com/read/29451304/distinct-methylation-profile-of-mucinous-ovarian-carcinoma-reveals-susceptibility-to-proteasome-inhibitors
#8
Phui-Ly Liew, Rui-Lan Huang, Yu-Chun Weng, Chia-Lang Fang, Tim Hui-Ming Huang, Hung-Cheng Lai
Mucinous type of epithelial ovarian cancer (MuOC) is a unique subtype with a poor survival outcome in recurrent and advanced stages. The role of type-specific epigenomics and its clinical significance remain uncertain. We analyzed the methylomic profiles of six benign mucinous adenomas, 24 MuOCs, 103 serous type of epithelial ovarian cancers (SeOCs), and 337 nonepithelial ovarian cancers. MuOC and SeOC exhibited distinct DNA methylation profiles comprising 101 genes, 81 of which exhibited low methylation in MuOC and were associated with the response to glucocorticoid, ATP hydrolysis-coupled proton transport, proteolysis involved in the cellular protein catabolic process, and ion transmembrane transport...
February 16, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29445078/mir-144-potentially-suppresses-proliferation-and-migration-of-ovarian-cancer-cells-by-targeting-runx1
#9
Shichao Han, Jinming Zhu, Yilei Zhang
BACKGROUND Ovarian cancer (OC) is one of the most common malignant diseases of the female reproductive system worldwide. Evidence has shown that microRNAs are involved in the development of ovarian cancer. miR-144, one of these microRNAs, has been found have upregulated expression in various human malignancies. The present study aimed to investigate the role miR-144 in ovarian cancer cell lines and to elucidate the mechanism involved. MATERIAL AND METHODS Human ovarian cancer cell lines (SKOV3/OVCAR3) and a normal ovarian cell line (IOSE80) were used to identify the miR-144 expression though qRT-PCR method...
February 15, 2018: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/29441937/antisense-lncrna-as-slc7a11-suppresses-epithelial-ovarian-cancer-progression-mainly-by-targeting-slc7a11
#10
Jinjin Yuan, Zongwen Liu, Rui Song
Antisense lncRNAs play a key role in the progression of multiple cancers. Thus, it is important to elucidate the function and mechanism of antisense lncRNAs, which may play a role in the treatment of epithelial ovarian cancer (EOC). In the current study, for the first time, we showed that the level of As-SLC7A11 was markedly reduced in EOC cancer tissues and cell lines compared with those of normal control. Further study showed that silencing of As-SLC7A11 could enhance ovarian cancer cell migration. In comparison, overexpression of As-SLC7A11 markedly induced ovarian cancer cell apoptosis...
July 3, 2017: Die Pharmazie
https://www.readbyqxmd.com/read/29441908/microrna-340-induces-apoptosis-by-downregulation-of-bag3-in-ovarian-cancer-skov3-cells
#11
Fei Qu, Xiufen Wang
Aberrant expression of miR-340 has been found in several kinds of cancers including ovarian cancer. Pro-apoptotic and anti-metastasis roles of miR-340 in ovarian cancer have also been reported; however, the underling molecular mechanisms by which miR-340 suppresses ovarian cancer are still unclear. This study focused on the role and molecular mechanism of miR-340 in ovarian cancer. Human ovarian carcinoma SKOV3 cells were used and transfected with miR-340 mimic, miR-340 inhibitor and their correspondingly negative controls (mimic control and inhibitor control)...
August 1, 2017: Die Pharmazie
https://www.readbyqxmd.com/read/29435063/inhibition-of-enhancer-of-zeste-homolog-2-increases-the-expression-of-p16-and-suppresses-the-proliferation-and-migration-of-ovarian-carcinoma-cells-in-vitro-and-in-vivo
#12
Fangfang Lu, Hong Xu, Qi Wang, Meiyi Li, Jiahua Meng, Yan Kuang
Enhancer of zeste homolog 2 (EZH2) is a histone methyltransferase, which targets histone H3 lysine 27. Studies have reported that EZH2 is involved in the development of several types of tumor, including ovarian cancer. p16, a well-known cell cycle regulator, has been demonstrated to be a tumor suppressor gene in a variety of malignant cells. However, the regulatory association between EZH2 and p16 in ovarian cancer remains to be fully elucidated. The present study aimed to determine whether EZH2 is involved in the development of ovarian cancer by regulating the expression of p16...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434823/long-non-coding-rna-sox2ot-promotes-cell-proliferation-and-motility-in-human-ovarian-cancer
#13
Ling Han, Wei Zhang, Bingyi Zhang, Leyun Zhan
Ovarian cancer is one of the most common malignant gynecological cancers. Although conventional chemotherapies have improved the treatment of patients with ovarian cancer, the mortality rate remains high. Hence, it is crucial that the detailed mechanisms that promote ovarian cancer are urgently identified. Therefore, reverse transcription-quantitative polymerase chain reaction was used to reveal the relative transcript levels. Colony formation assay and cell cycle assay were performed in siRNA-treated cells...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29434212/carm1-expressing-ovarian-cancer-depends-on-the-histone-methyltransferase-ezh2-activity
#14
Sergey Karakashev, Hengrui Zhu, Shuai Wu, Yuhki Yokoyama, Benjamin G Bitler, Pyoung-Hwa Park, Jeong-Heon Lee, Andrew V Kossenkov, Krutika Satish Gaonkar, Huihuang Yan, Ronny Drapkin, Jose R Conejo-Garcia, David W Speicher, Tamas Ordog, Rugang Zhang
CARM1 is an arginine methyltransferase that asymmetrically dimethylates protein substrates on arginine residues. CARM1 is often overexpressed in human cancers. However, clinically applicable cancer therapeutic strategies based on CARM1 expression remain to be explored. Here, we report that EZH2 inhibition is effective in CARM1-expressing epithelial ovarian cancer. Inhibition of EZH2 activity using a clinically applicable small molecule inhibitor significantly suppresses the growth of CARM1-expressing, but not CARM1-deficient, ovarian tumors in two xenograft models and improves the survival of mice bearing CARM1-expressing ovarian tumors...
February 12, 2018: Nature Communications
https://www.readbyqxmd.com/read/29430185/aldh1a2-suppresses-epithelial-ovarian-cancer-cell-proliferation-and-migration-by-downregulating-stat3
#15
Yichen Wang, Feng Shao, Lu Chen
Epithelial ovarian cancer is the deadliest gynecological malignancy worldwide. A better understanding of epithelial ovarian cancer pathogenesis and the molecular mechanism underlying its metastasis may increase overall survival rates. Previous studies have indicated that aldehyde dehydrogenase 1 family member A2 (ALDH1A2) is a candidate tumor suppressor in epithelial ovarian cancer. However, the potential role of ALDH1A2 in the molecular mechanisms of epithelial ovarian cancer remains largely unclear. In the present study, we found lower expression of ALDH1A2 in high-grade epithelial ovarian cancer tissues than in low-grade epithelial ovarian cancer tissues...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29429592/%C3%AE-glutamyl-cyclotransferase-contributes-to-tumor-progression-in-high-grade-serous-ovarian-cancer-by-regulating-epithelial-mesenchymal-transition-via-activating-pi3k-akt-mtor-pathway
#16
Yanli Li, Tingting Wu, Yanan Wang, Liu Yang, Chengcheng Hu, Limo Chen, Sufang Wu
OBJECTIVE: High grade serous ovarian cancer (HGSC) remains one of the most lethal malignancies in females. We previously reported that γ-glutamyl cyclotransferase (GGCT) was significantly upregulated in serous ovarian cancer. The current study was aimed to explore the function and underlying mechanism of GGCT in HGSC. METHODS: GGCT expression was assessed by immunohistochemistry in 128 HGSC patients. Stable cell lines with GGCT gene overexpression or knockdown were established to investigate the function of GGCT in HGSC in vitro and in vivo...
February 8, 2018: Gynecologic Oncology
https://www.readbyqxmd.com/read/29428664/eif5a1-promotes-epithelial-ovarian-cancer-proliferation-and-progression
#17
Jing Zhang, Xiao Li, Xiaorui Liu, Fuju Tian, Weihong Zeng, Xiaowei Xi, Yi Lin
Epithelial ovarian cancer (EOC) is one of the most common gynecological cancers and has the highest mortality rate thereof. We found abundant eukaryotic translation initiation factor 5A1 (EIF5A1) in 54 EOC tissues, and high EIF5A1 levels predicted poor survival. EIF5A1 ectopic expression enhanced EOC cell proliferative, migration, and invasive capabilities, while EIF5A1 knockdown suppressed them. Most importantly, GC7 (N1-guanyl-1,7-diaminoheptane, an EIF5A1 hypusination inhibitor) could reverse the effect of EIF5A1 upregulation on EOC cell proliferation, migration, and invasion and mutant type EIF5A1K50A plasmid [bearing a single point mutation (K50 → A50) that prevents hypusination] had no effects on these malignant behaviors...
February 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29426838/gene-specific-genetic-complementation-between-brca1-and-cobra1-during-mouse-mammary-gland-development
#18
Huai-Chin Chiang, Xiaowen Zhang, Xiayan Zhao, Chi Zhang, Jerry Chen, Paula Garza, Sabrina Smith, Thomas Ludwig, Richard J Baer, Rong Li, Yanfen Hu
Germ-line mutations in breast cancer susceptibility gene, BRCA1, result in familial predisposition to breast and ovarian cancers. The BRCA1 protein has multiple functional domains that interact with a variety of proteins in multiple cellular processes. Understanding the biological consequences of BRCA1 interactions with its binding partners is important for elucidating its tissue-specific tumor suppression function. The Cofactor of BRCA1 (COBRA1) is a BRCA1-binding protein that, as a component of negative elongation factor (NELF), regulates RNA polymerase II pausing during transcription elongation...
February 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29424889/lncrna-colon-cancer-associated-transcript-1-ccat1-promotes-proliferation-and-metastasis-of-ovarian-cancer-via-mir-1290
#19
X-J Lai, H-F Cheng
OBJECTIVE: Ovarian cancer is one of the leading causes of cancer-related death in women, but treatment remained unsatisfactory. Studies have shown that lncRNA colon cancer-associated transcript 1 (CCAT1) plays an important regulatory role in different cancers, but its role in ovarian cancer remained largely unclear. PATIENTS AND METHODS: Quantitative Real-time polymerase chain reaction (qRT-PCR) was applied to detect the expression of lncRNA CCAT1 in ovarian cancer and adjacent tissue, and analysis was applied to explore the relationship between expression and clinical characteristic...
January 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29423068/foxm1-and-%C3%AE-catenin-predicts-aggressiveness-in-middle-eastern-ovarian-cancer-and-their-co-targeting-impairs-the-growth-of-ovarian-cancer-cells
#20
Poyil Pratheeshkumar, Sasidharan Padmaja Divya, Sandeep Kumar Parvathareddy, Norah M Alhoshani, Ismail A Al-Badawi, Asma Tulbah, Fouad Al-Dayel, Abdul K Siraj, Khawla S Al-Kuraya
Epithelial ovarian cancer (EOC) is a highly lethal disease with poor prognosis especially in advanced stage tumor. Emerging evidence has reported that aberrant upregulation of FoxM1 and β-catenin are closely associated with aggressiveness of human cancer. However, interplay between these factors in the aggressiveness of EOC is not fully illustrated. In this study, we show that FoxM1 is frequently increased in Middle Eastern EOC and associated with high proliferative index (p = 0.0007) and high grade tumor (p = 0...
January 9, 2018: Oncotarget
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