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https://www.readbyqxmd.com/read/28650671/association-of-ccr2-190-g-a-gene-variants-and-ovarian-cancer-severity
#1
Gazi Yildirim, Rukset Attar, Seda Gulec-Yilmaz, Selvi Duman, Turgay Isbir
AIM: Chemokines and their receptors play an important role in tumor progression. In the current study, we aimed to determine the association between the CCR2 gene (+190 G/A) polymorphism and ovarian cancer severity. METHODS: CCR2 (+190 G/A) genotyping was performed using real-time polymerase chain reaction for DNA isolated from blood samples from a cohort of patients with ovarian cancer (n = 44) and a control group (n = 45). RESULTS: The CCR2 (+190 G/A) GG genotype frequencies for patients were significantly higher in the stage III-IV cancer group (p = 0...
June 26, 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28649435/improved-prediction-of-parp-inhibitor-response-and-identification-of-synergizing-agents-through-use-of-a-novel-gene-expression-signature-generation-algorithm
#2
Daniel J McGrail, Curtis Chun-Jen Lin, Jeannine Garnett, Qingxin Liu, Wei Mo, Hui Dai, Yiling Lu, Qinghua Yu, Zhenlin Ju, Jun Yin, Christopher P Vellano, Bryan Hennessy, Gordon B Mills, Shiaw-Yih Lin
Despite rapid advancement in generation of large-scale microarray gene expression datasets, robust multigene expression signatures that are capable of guiding the use of specific therapies have not been routinely implemented into clinical care. We have developed an iterative resampling analysis to predict sensitivity algorithm to generate gene expression sensitivity profiles that predict patient responses to specific therapies. The resultant signatures have a robust capacity to accurately predict drug sensitivity as well as the identification of synergistic combinations...
2017: NPJ Systems Biology and Applications
https://www.readbyqxmd.com/read/28649123/extraovarian-primary-peritoneal-carcinomatosis-a-case-report
#3
Gregory Nicolas, Tony Kfoury, Hassan Fawaz, Mahdi Issa
BACKGROUND Extraovarian primary peritoneal carcinoma (EOPPC) is a rare malignant epithelial tumor with an age-adjusted incidence rate of 6.78 per million, which arises from the peritoneal lining with minimal or no ovarian involvement. EOPPC is a diagnosis of exclusion with the absence of other identifiable primary sites and after surgical assessment and consideration of the histological report to evaluate the extent of ovarian invasion. CASE REPORT A 66-year-old woman complained of mild postprandial epigastric pain...
June 26, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28649078/3-4-chlorophenyl-1-2-3-oxadiazol-3-ium-5-olate-and-its-4-formyl-analog-ultrasound-assisted-synthesis-and-in-vitro-anticancer-evaluation-against-human-tumor-cell-lines
#4
Sachin K Bhosale, Shreenivas R Deshpande, Rajendra D Wagh
The title compound, 3-(4-chlorophenyl)-4-formyl-[1, 2, 3] oxadiazol-3-ium-5-olate 5 was synthesized under ultrasonication by formylation of 3-(4-chlorophenyl)-[1, 2, 3] oxadiazol-3-ium-5-olate 4 and characterized by spectral studies. The ultrasonic method of synthesis was found to be simple, ecofriendly, economical, reduces reaction time and gave good yield when compared with traditional methods of synthesis. Anticancer activity of the compounds were tested against 60 human tumor cell lines and compared with standard drug vincristine sulphate...
March 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28646535/targeting-stat3-by-ho3867-induces-apoptosis-in-ovarian-clear-cell-carcinoma
#5
Kristin Bixel, Uksha Saini, Hemant Kumar Bid, John Fowler, Maria Riley, Ross Wanner, Kalpana Deepa Priya Dorayappan, Sneha Rajendran, Ikuo Konishi, Noriomi Matsumura, David E Cohn, Karuppaiyah Selvendiran
Advanced ovarian clear cell carcinoma (OCCC) carries a very poor prognosis in large part secondary to the extremely high rate of resistance to standard platinum and taxane chemotherapy. STAT3 expression and activation has been shown to regulate tumor progression in various human cancers, though has not been well studied in OCCC. Preliminary work in our lab has demonstrated constitutive activation of STAT3 (pSTAT3Tyr705 or pSTAT3727) in OCCC cell lines as well as human OCCC tumor tissue samples. Significantly, pSTAT3 is expressed in the absence of other forms of activated STAT (pSTAT1, 2, 6)...
June 24, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28646432/asynchronus-bilateral-ovarian-torsions-in-girls-systematic-review
#6
REVIEW
Maja Raicevic, Amulya Kumar Saxena
BACKGROUND: Bilateral ovarian torsions with complete loss of ovaries is devastating. This study analyzed the literature on bilateral ovarian torsions in girls to evaluate surgical options and outcomes. METHODS: Literature was searched on Pubmed® (1987-2014) using terms "bilateral", "adnexal", "ovary", "torsion" and "children". Data were collected on age, surgical preference, pathology and outcomes. RESULTS: Thirteen articles were identified, and 9 met the inclusion criteria (5 case reports, 4 original articles); and analyzed 17 girls (mean age: 8...
June 22, 2017: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/28645120/acute-abdomen-secondary-to-ruptured-epithelial-ovarian-cancer-during-pregnancy-the-relevance-of-teamwork
#7
Carlos Manuel Ortiz-Mendoza, Sandra Adriana Vera-Vázquez, Manuel Gómez-Rodríguez, José Luis López-Gómez, Leticia Bornstein-Quevedo
Acute abdomen secondary to epithelial ovarian cancer rupture during pregnancy is a rare event. Our aim is to present how the work of a coordinated multidisciplinary team in a case of ruptured epithelial ovarian cancer during pregnancy is feasible to obtain the best results possible. A 34-year-old woman during the 37th week of her first gestation presented with an acute abdomen. During laparotomy, a ruptured 16.5-cm left ovarian tumor was detected; the tumor was extirpated and sent to pathologic evaluation. In the meantime, a Kerr cesarean section was performed, and a healthy female neonate was born...
June 23, 2017: Revista Brasileira de Ginecologia e Obstetrícia
https://www.readbyqxmd.com/read/28645115/a-comprehensive-review-of-heregulins-her3-and-her4-as-potential-therapeutic-targets-in-cancer
#8
REVIEW
Jose Mauricio Mota, Katharine Ann Collier, Ricardo Lima Barros Costa, Timothy Taxter, Aparna Kalyan, Caio A Leite, Young Kwang Chae, Francis J Giles, Benedito A Carneiro
Heregulins (HRGs) bind to the receptors HER3 or HER4, induce receptor dimerization, and trigger downstream signaling that leads to tumor progression and resistance to targeted therapies. Increased expression of HRGs has been associated with worse clinical prognosis; therefore, attempts to block HRG-dependent tumor growth have been pursued. This manuscript summarizes the function and signaling of HRGs and review the preclinical evidence of its involvement in carcinogenesis, prognosis, and treatment resistance in several malignancies such as colorectal cancer, non-small cell lung cancer, ovarian cancer, and breast cancer...
June 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28644148/5-azacytidine-promotes-invadopodia-formation-and-tumor-metastasis-through-the-upregulation-of-pi3k-in-ovarian-cancer-cells
#9
Dan Cao, Dan Li, Yong Huang, Yu Ma, Binglan Zhang, Chengjian Zhao, Senyi Deng, Min Luo, Tao Yin, Yu-Quan Wei, Wei Wang
The high incidence of metastasis accounts for most of the lethality of ovarian cancer. Invadopodia are small, specialized types of machinery that degrade the extracellular matrix and are thus involved in the invasion and metastasis of cancer cells. The formation of invadopodia is regulated by both genetic and epigenetic factors. However, the ways by which methylation/demethylation regulates the dynamics of invadopodia in ovarian cancer are largely unknown. In this study, we found that the inhibition of methylation by 5-AZ (5-Azacytidine) increased the formation of invadopodia and enhanced degradation of the extracellular matrix in ovarian cancer cells...
June 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28644035/influence-of-a-basic-side-chain-on-the-properties-of-hypoxia-selective-nitro-analogues-of-the-duocarmycins-demonstration-of-substantial-anticancer-activity-in-combination-with-irradiation-or-chemotherapy
#10
Moana Tercel, Ho H Lee, Sunali Y Mehta, Jean-Jacques Youte Tendoung, Sally Y Bai, H D Sarath Liyanage, Frederik B Pruijn
A new series of nitro analogues of the duocarmycins was prepared and evaluated for hypoxia-selective anticancer activity. The compounds incorporate 13 different amine-containing side chains designed to bind in the minor groove of DNA while spanning a wide range of base strength from pKa 9.64 to 5.24. The most favorable in vitro properties were associated with strongly basic side chains, but the greatest in vivo antitumor activity was found for compounds containing a weakly basic morpholine. This applies to single-agent activity and for activity in combination with irradiation or chemotherapy (gemcitabine or docetaxel)...
June 23, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28643732/thrombocytosis-in-gynecological-cancers
#11
REVIEW
Deepti Sharma, Garima Singh
Thrombocytosis has been suggested to be a poor prognostic indicator in malignancies. Studies have shown that thrombocytosis is associated with a poor prognosis in various gynecological malignancies such as carcinoma ovary, cervical cancer, and endometrial cancer. The aim of this study is to analyze the impact of thrombocytosis on the prognosis of gynecological cancer. All the relevant data were retrieved by PubMed, MEDLINE, and Web of Science, and then studies were chosen in this analysis of association between thrombocytosis and gynecological malignancy...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28643177/targeting-dna-repair-and-replication-stress-in-the-treatment-of-ovarian-cancer
#12
REVIEW
Junko Murai
Approximately half of high-grade serous epithelial ovarian cancers incur alterations in genes of homologous recombination (BRCA1, BRCA2, RAD51C, Fanconi anemia genes), and the rest incur alterations in other DNA repair pathways at high frequencies. Such cancer-specific gene alterations can confer selective sensitivity to DNA damaging agents such as cisplatin and carboplatin, topotecan, etoposide, doxorubicin, and gemcitabine. Originally presumed to inhibit DNA repair, PARP inhibitors that have recently been approved by the FDA for the treatment of advanced ovarian cancer also act as DNA damaging agents by inducing PARP-DNA complexes...
June 22, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28641578/methylome-analysis-of-extreme-chemoresponsive-patients-identifies-novel-markers-of-platinum-sensitivity-in-high-grade-serous-ovarian-cancer
#13
Tushar Tomar, Nicolette G Alkema, Leroy Schreuder, Gert Jan Meersma, Tim de Meyer, Wim van Criekinge, Harry G Klip, Heidi Fiegl, Els van Nieuwenhuysen, Ignace Vergote, Martin Widschwendter, Ed Schuuring, Ate G J van der Zee, Steven de Jong, G Bea A Wisman
BACKGROUND: Despite an early response to platinum-based chemotherapy in advanced stage high-grade serous ovarian cancer (HGSOC), the majority of patients will relapse with drug-resistant disease. Aberrant epigenetic alterations like DNA methylation are common in HGSOC. Differences in DNA methylation are associated with chemoresponse in these patients. The objective of this study was to identify and validate novel epigenetic markers of chemoresponse using genome-wide analysis of DNA methylation in extreme chemoresponsive HGSOC patients...
June 23, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28641048/updates-and-current-challenges-in-microrna-research-for-personalized-medicine-in-ovarian-cancer
#14
Victoria Mandilaras, Mégane Vernon, Matthieu Meryet-Figuière, Katherine Karakasis, Bernard Lambert, Laurent Poulain, Amit Oza, Christophe Denoyelle, Stephanie Lheureux
Ovarian cancer (OC) is the second most common and the most lethal of the gynecological malignancies. Currently, there exists no effective screening tool for OC. MicroRNAs (miRNAs) are endogenous 18-23 nucleotide non-coding RNAs that refine gene expression. MiRNAs have been found to be aberrantly expressed in OC tumor tissue as well as detectable in biological fluids such as the blood, urine, and ascites and have been proposed as biomarkers and therapeutic targets for OC. Areas covered: This review summarizes the current knowledge regarding the application of miRNAs as diagnostic, prognostic, and predictive biomarkers in OC...
June 22, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28640176/ultrasound-guided-percutaneous-radiofrequency-ablation-of-liver-metastasis-from-ovarian-cancer-a-single-center-initial-experience
#15
Baoxian Liu, Guangliang Huang, Chunlin Jiang, Ming Xu, Bowen Zhuang, Manxia Lin, Wenshuo Tian, Xiaohua Xie, Ming Kuang, Xiaoyan Xie
OBJECTIVE: The aim of this study was to evaluate the feasibility, effectiveness, and safety of ultrasound-guided percutaneous radiofrequency ablation (RFA) for the treatment of liver metastasis from ovarian cancer (OC). METHODS: A retrospective review was performed on 11 patients (mean age, 53.0 ± 10.1 years) with 22 liver metastases (mean diameter, 2.0 ± 0.8 cm) from OC undergone RFA. Radiofrequency ablation was carried out with Starburst XL electrodes (RITA Medical System, Mountain View, CA) or Cool-tip electrodes (Cool-tip Systems; Valleylab, Boulder, CO)...
July 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28639753/screening-for-ovarian-cancer-imaging-challenges-and-opportunities-for-improvement
#16
EDITORIAL
Kelsey B Mathieu, Deepak G Bedi, Sara L Thrower, Aliya Qayyum, Robert C Bast
The United Kingdom Collaborative Trial of Ovarian Cancer Screening (UKCTOCS) recently reported a reduction in the average overall mortality among ovarian cancer patients screened with an annual sequential, multimodal strategy that tracked biomarker CA125 over time, where increasing serum CA125 levels prompted ultrasound. However, multiple cases were documented wherein serum CA125 levels were rising, but ultrasound screens were normal, thus delaying surgical intervention. A significant factor which could contribute to false negatives is that many aggressive ovarian cancers are believed to arise from epithelial cells on the fimbriae of the fallopian tubes, which are not readily imaged...
June 22, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28639280/mutational-profiles-of-brenner-tumors-show-distinctive-features-uncoupling-urothelial-carcinomas-and-ovarian-carcinoma-with-transitional-cell-histology
#17
Nicole Pfarr, Silvia Darb-Esfahani, Jonas Leichsenring, Eliane Taube, Melanie Boxberg, Ioana Braicu, Moritz Jesinghaus, Roland Penzel, Volker Endris, Aurelia Noske, Wilko Weichert, Peter Schirmacher, Carsten Denkert, Albrecht Stenzinger
Brenner tumors (BT) are rare ovarian tumors encompassing benign, borderline and malignant variants. While the histopathology of BTs and their clinical course is well described, little is known about the underlying genetic defects. We employed targeted next generation sequencing to analyze the mutational landscape in a cohort of 23 BT cases (17 benign, 2 borderline, 4 malignant) and 3 ovarian carcinomas with transitional cell histology (TCC). Copy number variations (CNV) were validated by fluorescence in-situ hybridization (FISH) and quantitative PCR-based copy number assays...
June 22, 2017: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28638734/severe-but-not-mild-heat-shock-treatment-induces-immunogenic-cell-death-in-cancer-cells
#18
Irena Adkins, Lenka Sadilkova, Nada Hradilova, Jakub Tomala, Marek Kovar, Radek Spisek
The mechanisms of immunogenicity underlying mild heat-shock (mHS) treatment < 42°C of tumor cells are largely attributed to the action of heat-shock proteins; however, little is known about the immunogenicity of tumor cells undergoing severe cytotoxic heat-shock treatment (sHS > 43°C). Here, we found that sHS, but not mHS (42°C), induces immunogenic cell death in human cancer cell lines as defined by the induction of ER stress response and ROS generation, cell surface exposure of calreticulin, HSP70 and HSP90, decrease of cell surface CD47, release of ATP and HMGB1...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28637689/elevation-of-tp53-autoantibody-prior-to-ca125-in-preclinical-invasive-epithelial-ovarian-cancer
#19
Wei-Lei Yang, Aleksandra Gentry-Maharaj, Archana R Simmons, Andy Ryan, Evangelia O Fourkala, Zhen Lu, Keith A Baggerly, Yang Zhao, Karen Lu, David D L Bowtell, Ian Jacobs, Steven J Skates, Wei-Wu He, Usha Menon, Robert C Bast
Purpose: The TP53 tumor suppressor gene is mutated in >95% of high grade serous ovarian cancers. Detecting an autologous antibody response to TP53 might improve early detection. <p>Experimental design: An immunoassay was developed to measure TP53 autoantibody in sera from 378 cases of invasive epithelial ovarian cancer and in 944 age-matched healthy controls from the United States, Australia and the United Kingdom. Serial preclinical samples from cases and controls were also assayed from the UK Collaborative Trial of Ovarian Cancer Screening (UKCTOCS)...
June 21, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28637507/dysregulated-expression-of-long-noncoding-rnas-in-gynecologic-cancers
#20
REVIEW
Elahe Seyed Hosseini, Matthieu Meryet-Figuiere, Hamed Sabzalipoor, Hamed Haddad Kashani, Hossein Nikzad, Zatollah Asemi
Cancers of the female reproductive system include ovarian, uterine, vaginal, cervical and vulvar cancers, which are termed gynecologic cancer. The emergence of long noncoding RNAs (lncRNAs), which are believed to play a crucial role in several different biological processes, has made the regulation of gene expression more complex. Although the function of lncRNAs is still rather elusive, their broad involvement in the initiation and progression of various cancers is clear. They are also involved in the pathogenesis of cancers of the female reproductive system...
June 21, 2017: Molecular Cancer
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