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Ovarian cancer etiology

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https://www.readbyqxmd.com/read/27884207/potential-contribution-of-the-uterine-microbiome-in-the-development-of-endometrial-cancer
#1
Marina R S Walther-António, Jun Chen, Francesco Multinu, Alexis Hokenstad, Tammy J Distad, E Heidi Cheek, Gary L Keeney, Douglas J Creedon, Heidi Nelson, Andrea Mariani, Nicholas Chia
BACKGROUND: Endometrial cancer studies have led to a number of well-defined but mechanistically unconnected genetic and environmental risk factors. One of the emerging modulators between environmental triggers and genetic expression is the microbiome. We set out to inquire about the composition of the uterine microbiome and its putative role in endometrial cancer. METHODS: We undertook a study of the microbiome in samples taken from different locations along the female reproductive tract in patients with endometrial cancer (n = 17), patients with endometrial hyperplasia (endometrial cancer precursor, n = 4), and patients afflicted with benign uterine conditions (n = 10)...
November 25, 2016: Genome Medicine
https://www.readbyqxmd.com/read/27869446/-oncopathological-aspects-of-brca1-and-brca2-genes-inactivation-in-tumors-of-ovary-fallopian-tube-and-pelvic-peritoneum
#2
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/27862229/sparse-multivariate-factor-analysis-regression-models-and-its-applications-to-integrative-genomics-analysis
#3
Yan Zhou, Pei Wang, Xianlong Wang, Ji Zhu, Peter X-K Song
The multivariate regression model is a useful tool to explore complex associations between two kinds of molecular markers, which enables the understanding of the biological pathways underlying disease etiology. For a set of correlated response variables, accounting for such dependency can increase statistical power. Motivated by integrative genomic data analyses, we propose a new methodology-sparse multivariate factor analysis regression model (smFARM), in which correlations of response variables are assumed to follow a factor analysis model with latent factors...
November 10, 2016: Genetic Epidemiology
https://www.readbyqxmd.com/read/27846658/late-effects-following-treatment-of-hodgkin-lymphoma-during-childhood-and-adolescence-results-of-the-hodgkin-lymphoma-late-effects-research-project
#4
W Dörffel, M Riepenhausen, H Lüders, J Brämswig
Survival rates have been excellent in patients treated for Hodgkin lymphoma (HL) during childhood and adolescence. Unfortunately, severe treatment related late effects have been observed. It was therefore an important aim of the cooperative pediatric HL therapy studies in Germany to reduce the number of late effects without jeopardizing the excellent treatment results. Progress and relapses of HL were analyzed to obtain important information for the future salvage therapy. All late effects were documented and their etiologies analyzed...
November 2016: Klinische Pädiatrie
https://www.readbyqxmd.com/read/27842595/long-term-survival-in-pseudo-meigs-syndrome-caused-by-ovarian-metastases-from-colon-cancer
#5
Yosuke Tajima, Hitoshi Kameyama, Saki Yamada, Ryoma Yagi, Masato Nakano, Masayuki Nagahashi, Yoshifumi Shimada, Jun Sakata, Takashi Kobayashi, Hajime Umezu, Toshifumi Wakai
BACKGROUND: Meigs' syndrome is defined as the co-existence of benign ovarian fibroma or fibroma-like tumor, ascites, and pleural effusion. In contrast, pseudo-Meigs' syndrome is defined as the co-existence of other ovarian or pelvic tumors, ascites, and pleural effusion. In Meigs' and pseudo-Meigs' syndromes, ascites and pleural effusion resolve promptly after the complete resection of the ovarian or pelvic tumor(s). Secondary ovarian tumors from colorectal gastrointestinal metastases rarely cause pseudo-Meigs' syndrome; only 11 cases of pseudo-Meigs' syndrome secondary to colorectal cancers have been reported in the literature...
November 14, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27814276/overexpression-of-receptor-for-advanced-glycation-end-products-rage-in-ovarian-cancer
#6
Farzaneh Rahimi, Jamshid Karimi, Mohammad Taghi Goodarzi, Massoud Saidijam, Iraj Khodadadi, Amir Nader Emami Razavi, Maryam Nankali
BACKGROUND: Ovarian cancer is one of the important challenges in the field of gynecologic oncology because of some problems in understanding its etiology and pathogenesis. Receptor for advanced glycation end products (RAGE) is a multiligand trans-membranous receptor which is upregulated in some human cancers. Mechanisms of RAGE involvement in carcinogenesis of ovarian cancer are unknown. OBJECTIVE: This study aimed to investigate the expression of RAGE in ovarian cancers and its association with clinicopathological characteristics...
October 28, 2016: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/27747116/chlamydia-peritonitis-and-ascites-mimicking-ovarian-cancer
#7
Anar Gojayev, Diana P English, Matthew Macer, Masoud Azodi
Background. Pelvic inflammatory disease (PID) rarely results in diffuse ascites. Severe adhesive disease secondary to PID may lead to the formation of inclusion cysts and even pelvic peritoneal nodularity due to postinflammatory scarring and cause an elevation of serum CA-125 levels. The constellation of these findings may mimic an ovarian neoplasm. Case. We report a case of a 22-year-old female who presented with multiple pelvic cysts and diffuse ascites due to Chlamydia trachomatis infection. The initial gynecologic exam did not reveal obvious evidence of PID; however, a positive Chlamydia trachomatis test, pathologic findings, and the exclusion of other etiologies facilitated the diagnosis...
2016: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27741511/the-role-of-the-androgen-receptor-in-ovarian-cancer-carcinogenesis-and-its-clinical-implications
#8
Haiyan Zhu, Xuejie Zhu, Lihong Zheng, Xiaoli Hu, LuZhe Sun, Xueqiong Zhu
Ovarian cancer is the major cause of death in women with gynecologic malignancies. There is emerging evidence that Androgen/androgen receptor (AR) signaling plays a critical role in the etiology and progression of this disease. Androgen receptor is frequently expressed in various subtypes of ovarian cancers and androgen/AR signaling has been shown to promote proliferation, migration, and invasion of ovarian cancer cells. Furthermore, shorter AR CAG repeats length and increased AR activity are associated with increased ovarian cancer risk and may be a useful prognosticator under certain circumstances...
October 11, 2016: Oncotarget
https://www.readbyqxmd.com/read/27635065/the-prostate-lung-colorectal-and-ovarian-cancer-plco-screening-trial-pathology-tissue-resource
#9
Claire S Zhu, Wen-Yi Huang, Paul F Pinsky, Christine D Berg, Mark Sherman, Kelly J Yu, Danielle M Carrick, Amanda Black, Robert Hoover, Petra Lenz, Craig Williams, Laura Hawkins, Matthew Chaloux, Susan Yurgalevitch, Sunitha Mathew, Amy Miller, Vanessa Olivo, Asia Khan, Shannon M Pretzel, Deborah Multerer, Patricia Beckmann, Karen G Broski, Neal D Freedman
BACKGROUND: Pathology tissue specimens with associated epidemiologic and clinical data are valuable for cancer research. The Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial undertook a large-scale effort to create a public resource of pathology tissues from PLCO participants who developed a cancer during the trial. METHODS: Formalin-fixed paraffin-embedded tissue blocks were obtained from pathology laboratories on a loan basis for central processing of tissue microarrays, with additional free-standing tissue cores collected for nucleic acid extraction...
December 2016: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/27587791/association-of-ovarian-tumor-%C3%AE-2-adrenergic-receptor-status-with-ovarian-cancer-risk-factors-and-survival
#10
Tianyi Huang, Shelley S Tworoger, Jonathan L Hecht, Megan S Rice, Anil K Sood, Laura D Kubzansky, Elizabeth M Poole
BACKGROUND: The β2-adrenergic signaling pathway mediates the effects of chronic stress on ovarian cancer progression in mouse models. The relevance of this pathway to human ovarian cancer remains unknown. METHODS: We assessed tumor expression of β2-adrenergic receptor (ADRB2) using tissue microarrays in 237 ovarian cancer cases from the Nurses' Health Studies (NHS/NHSII). Competing risks Cox regression was used to evaluate whether associations of reproductive, hormonal, and psychosocial factors with ovarian cancer risk differed by ADRB2...
December 2016: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/27552172/uterus-transplantation-in-france-for-which-patients
#11
S Huet, A Tardieu, M Filloux, M Essig, N Pichon, J F Therme, P Piver, Y Aubard, J M Ayoubi, O Garbin, P Collinet, A Agostini, V Lavoue, A Piccardo, T Gauthier
OBJECTIVE: Uterine infertility (UI), which can be caused by a variety of congenital or acquired factors, affects several thousand women in Europe. Uterus transplantation (UTx), at the current stage of research, offers hope for these women to be both the biological mother and the carrier of their child. However, the indications of UTx still need to be defined. The main aim of the study was to describe the different etiologies of UI and other data as marital and parental status from women requesting UTx who contacted us in the framework of a UTx clinical trial...
October 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27532258/analysis-of-founder-mutations-in-rare-tumors-associated-with-hereditary-breast-ovarian-cancer-reveals-a-novel-association-of-brca2-mutations-with-ampulla-of-vater-carcinomas
#12
Pedro Pinto, Ana Peixoto, Catarina Santos, Patrícia Rocha, Carla Pinto, Manuela Pinheiro, Luís Leça, Ana Teresa Martins, Verónica Ferreira, Carla Bartosch, Manuel R Teixeira
BRCA1 and BRCA2 mutations are responsible for hereditary breast and ovarian cancer, but they also confer an increased risk for the development of rarer cancers associated with this syndrome, namely, cancer of the pancreas, male breast, peritoneum, and fallopian tube. The objective of this work was to quantify the contribution of the founder mutations BRCA2 c.156_157insAlu and BRCA1 c.3331_3334del for cancer etiology in unselected hospital-based cohorts of Portuguese patients diagnosed with these rarer cancers, by using a strategy that included testing of archival tumor tissue...
2016: PloS One
https://www.readbyqxmd.com/read/27424443/-vulvar-squamous-cell-carcinoma-in-young-women-with-hpv-negative
#13
A Gómez-Alarcon, M T Gómez-García, J P García-de la-Torre, M Del Valle-Morón, M A Arones-Collantes, G González-de Merlo
BACKGROUND: The vulvar cancer is the fourth more frequent neoplasia after the endometrial, cervix and ovarian cancer. Normally, it has been related to old women of ages from 70 to 80 years old. Rarely, it has been detected cases in adult or young women. However, its incidence has been increased in the last years and in more early years. It is for this change in the incidence and its appearance in early years why a possible etiology has been looked for, opening different hypothesis that go from that related to the HPV to those that study an inflammatory chronic process as the basis for the carcinogenesis...
March 2016: Ginecología y Obstetricia de México
https://www.readbyqxmd.com/read/27418945/high-risk-hpv-is-not-associated-with-epithelial-ovarian-cancer-in-a-caucasian-population
#14
Kasper Ingerslev, Estrid Hogdall, Wojciech Skovrider-Ruminski, Tine Henrichsen Schnack, Mona Aarenstrup Karlsen, Lotte Nedergaard, Claus Hogdall, Jan Blaakær
BACKGROUND: High-risk human papillomavirus (HPV) has been suspected to play a role in the carcinogenesis of epithelial ovarian cancer (EOC). However, results from previous studies are conflicting. In most of these studies, the number of tissue samples was small. The current study was therefore undertaken to examine the prevalence of high-risk HPV DNA in EOC in a large series of patients. METHOD: Formalin-fixed, paraffin-imbedded tumor tissue samples from 198 cases consecutively included in the Danish Pelvic Mass Study were analyzed...
2016: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/27403073/brca1-and-brca2-sequence-variations-detected-with-next-generation-sequencing-in-patients-with-premature-ovarian-insufficiency
#15
Nafiye Karakaş Yılmaz, Peren Hatice Karagin, Yunus Kasım Terzi, İnci Kahyaoğlu, Saynur Yılmaz, Salim Erkaya, Feride İffet Şahin
OBJECTIVE: Although the association between BRCA1 and BRCA2 gene mutations and breast and ovarian cancer is known, there is insufficient data about premature ovarian insufficiency (POI). However, several studies have reported that there might be a relationship between POI and BRCA1 and BRCA2 gene mutation. Therefore, in the present study, we aimed to investigate the role of BRCA1 and BRCA2 gene mutations in the etiology of POI in a Turkish population. MATERIAL AND METHODS: The cohort was classified into two groups: a study group, consisting of 56 individuals diagnosed with premature ovarian insufficiency (and who were younger than 40 years of age, had an antral follicle count <3-5, and FSH levels >12 IU/I), and a control group, consisting of 45 fertile individuals...
2016: Journal of the Turkish German Gynecological Association
https://www.readbyqxmd.com/read/27357932/a-prospective-study-of-angiogenic-markers-and-postmenopausal-breast-cancer-risk-in-the-prostate-lung-colorectal-and-ovarian-cancer%C3%A2-screening-trial
#16
Roni T Falk, Annetine Cathrine Staff, Gary Bradwin, S Ananth Karumanchi, Rebecca Troisi
PURPOSE: Pro-angiogenic factors are positively associated with breast tumor staging and poorer prognosis, but their role in the etiology of breast cancer has not been assessed. METHODS: We measured serum levels of the pro-angiogenic vascular endothelial growth factor A (VEGF), and placental growth factor (PlGF) and anti-angiogenic soluble fms-like tyrosine kinase-1 (sFlt-1) in 352 incident breast cancer cases [mean age at diagnosis 67 (range 55-83)] and 352 non-cases in the prostate, lung, colorectal, and ovarian screening trial (women enrolled 1993-2001, followed through 2005) matched on age and date of enrollment...
August 2016: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/27354067/follicle-depletion-provides-a-permissive-environment-for-ovarian-carcinogenesis
#17
Ying Wang, Kathy Qi Cai, Elizabeth R Smith, Toni M Yeasky, Robert Moore, Parvin Ganjei-Azar, Andres J Klein-Szanto, Andrew K Godwin, Thomas C Hamilton, Xiang-Xi Xu
We modeled the etiology of postmenopausal biology on ovarian cancer risk using germ cell-deficient white-spotting variant (Wv) mice, incorporating oncogenic mutations. Ovarian cancer incidence is highest in peri- and postmenopausal women, and epidemiological studies have established the impact of reproductive factors on ovarian cancer risk. Menopause as a result of ovarian follicle depletion is thought to contribute to higher cancer risk. As a consequence of follicle depletion, female Wv mice develop ovarian tubular adenomas, a benign epithelial tumor corresponding to surface epithelial invaginations and papillomatosis frequently found in postmenopausal human ovaries...
September 15, 2016: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/27325851/ovarian-cancer-risk-factors-by-histologic-subtype-an-analysis-from-the-ovarian-cancer-cohort-consortium
#18
Nicolas Wentzensen, Elizabeth M Poole, Britton Trabert, Emily White, Alan A Arslan, Alpa V Patel, V Wendy Setiawan, Kala Visvanathan, Elisabete Weiderpass, Hans-Olov Adami, Amanda Black, Leslie Bernstein, Louise A Brinton, Julie Buring, Lesley M Butler, Saioa Chamosa, Tess V Clendenen, Laure Dossus, Renee Fortner, Susan M Gapstur, Mia M Gaudet, Inger T Gram, Patricia Hartge, Judith Hoffman-Bolton, Annika Idahl, Michael Jones, Rudolf Kaaks, Victoria Kirsh, Woon-Puay Koh, James V Lacey, I-Min Lee, Eva Lundin, Melissa A Merritt, N Charlotte Onland-Moret, Ulrike Peters, Jenny N Poynter, Sabina Rinaldi, Kim Robien, Thomas Rohan, Dale P Sandler, Catherine Schairer, Leo J Schouten, Louise K Sjöholm, Sabina Sieri, Anthony Swerdlow, Anna Tjonneland, Ruth Travis, Antonia Trichopoulou, Piet A van den Brandt, Lynne Wilkens, Alicja Wolk, Hannah P Yang, Anne Zeleniuch-Jacquotte, Shelley S Tworoger
PURPOSE: An understanding of the etiologic heterogeneity of ovarian cancer is important for improving prevention, early detection, and therapeutic approaches. We evaluated 14 hormonal, reproductive, and lifestyle factors by histologic subtype in the Ovarian Cancer Cohort Consortium (OC3). PATIENTS AND METHODS: Among 1.3 million women from 21 studies, 5,584 invasive epithelial ovarian cancers were identified (3,378 serous, 606 endometrioid, 331 mucinous, 269 clear cell, 1,000 other)...
August 20, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/27291497/trpv4-regulates-breast-cancer-cell-extravasation-stiffness-and-actin-cortex
#19
Wen Hsin Lee, Lee Yee Choong, Naing Naing Mon, SsuYi Lu, Qingsong Lin, Brendan Pang, Benedict Yan, Vedula Sri Ram Krishna, Himanshu Singh, Tuan Zea Tan, Jean Paul Thiery, Chwee Teck Lim, Patrick Boon Ooi Tan, Martin Johansson, Christian Harteneck, Yoon Pin Lim
Metastasis is a significant health issue. The standard mode of care is combination of chemotherapy and targeted therapeutics but the 5-year survival rate remains low. New/better drug targets that can improve outcomes of patients with metastatic disease are needed. Metastasis is a complex process, with each step conferred by a set of genetic aberrations. Mapping the molecular changes associated with metastasis improves our understanding of the etiology of this disease and contributes to the pipeline of targeted therapeutics...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27277846/inflammatory-markers-of-crp-il6-tnf%C3%AE-and-soluble-tnfr2-and-the-risk-of-ovarian-cancer-a-meta-analysis-of-prospective-studies
#20
Fangfang Zeng, Huishan Wei, Engkiong Yeoh, Zheqing Zhang, Ze-Fang Ren, Graham A Colditz, Shelley S Tworoger, Xuefen Su
BACKGROUND: There has been growing evidence showing that inflammatory markers play an important role in the development of ovarian cancer. We conducted a meta-analysis on the associations between circulating levels of C-reactive protein (CRP), interleukin 6 (IL6), tumor necrosis factor α (TNFα), and soluble TNFα receptor 2 (TNFR2), and the risk of ovarian cancer. METHODS: A systematic search of PubMed and EMBASE up until January 19, 2016 was conducted to retrieve prospective studies...
August 2016: Cancer Epidemiology, Biomarkers & Prevention
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