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https://www.readbyqxmd.com/read/29331935/disruption-of-thyroid-hormone-sulfotransferase-activity-by-brominated-flame-retardant-chemicals-in-the-human-choriocarcinoma-placenta-cell-line-bewo
#1
Christopher P Leonetti, Craig M Butt, Heather M Stapleton
Brominated flame retardants (BFRs) have been shown to disrupt thyroid hormone (TH) homeostasis through multiple mechanisms, including inhibition of enzymes that regulate intracellular levels of THs, such as sulfotransferases (SULTs). The placenta plays a critical role in helping to maintain TH levels during fetal development and expresses SULTs. This is concerning given that disruption of TH regulation within the placenta could potentially harm the developing fetus. In this study, we investigated the effects of two polybrominated diphenyl ethers (PBDEs), two hydroxylated PBDEs, and 2,4,6-tribromophenol (2,4,6-TBP) on TH SULT activity in a choriocarcinoma placenta cell line (BeWo)...
December 28, 2017: Chemosphere
https://www.readbyqxmd.com/read/29324974/the-role-of-endoplasmic-reticulum-aminopeptidase-2-erap2-in-modulating-immune-detection-of-choriocarcinoma
#2
Michelle D Warthan, Sonya L Washington, Samone E Franzese, Ronald M Ramus, Kyu-Rae Kim, Timothy P York, Efstratios Stratikos, Jerome F Strauss, Eun D Lee
Gestational choriocarcinomas are derived from placental trophoblast cells, with HLA-C being the only class I polymorphic molecule expressed. However, choriocarcinomas have not been profiled for endoplasmic reticulum aminopeptidase 2 (ERAP2) expression. ERAP2 trims peptides presented by human leukocyte antigens (HLA) have shown to modulate immune response. Over 50% of choriocacinomas we screened lack ERAP2 expression, which suggests the absence of ERAP2 expression allows immune evasion of choriocarcinoma cells...
January 9, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29286555/gonadal-dysgenesis-is-associated-with-worse-outcomes-in-patients-with-ovarian-nondysgerminomatous-tumors-a-report-of-the-children-s-oncology-group-agct-0132-study
#3
Bryan J Dicken, Deborah F Billmire, Mark Krailo, Caihong Xia, Furqan Shaikh, John W Cullen, Thomas A Olson, Farzana Pashankar, Marcio H Malogolowkin, James F Amatruda, Frederick J Rescorla, Rachel A Egler, Jonathan H Ross, Carlos Rodriguez-Galindo, A Lindsay Frazier
PURPOSE: In this report, we characterize the timing and behavior of malignant ovarian germ cell tumors (GCTs) in pediatric patients with dysgenetic gonads compared to those with normal gonadal development. PATIENTS AND METHODS: Patients from the Children's Oncology Group AGCT0132 with malignant ovarian GCTs were included. Within this population, we sought to identify patients with gonadoblastoma, streak ovaries, or other evidence of gonadal dysgenesis (GD). Patients with malignant GCTs containing one or more of the following histologies-yolk sac tumor, embryonal carcinoma, or choriocarcinoma-were included...
December 29, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29285373/successful-detection-of-sry-gene-via-fine-needle-biopsy-a-case-of-extragenital-gestational-choriocarcinoma-in-the-kidney
#4
Shunsuke Orisaka, Kyosuke Kagami, Yasunari Mizumoto, Wataru Koda, Masanori Ono, Mitsuhiro Nakamura, Hiroshi Fujiwara
The current report describes a case of extragenital gestational choriocarcinoma in the kidney. A 36-year-old woman with a history of two deliveries of male babies visited the present hospital due to secondary amenorrhea following a positive urinary pregnancy test. Despite a high serum level of human chorionic gonadotropin, at 51,800 mIU/ml, diagnostic imaging methods and pathological examination did not detect any conceptus in the genital tract. Positron emission tomography-computed tomography detected 18F-FDG-positive tumors in the left kidney and right lung...
December 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29277804/debulking-surgery-for-pelvic-recurrence-after-surgically-treated-tubal-gestational-choriocarcinoma-a-case-report-and-literature-review
#5
Nicolae Bacalbasa, Irina Balescu, Vladislav Brasoveanu, Alexandru Florin Anca
Gestational choriocarcinomas are very rare malignancies, with only few cases being reported so far. Moreover, the presence of pelvic recurrences after surgically-treated gestational choriocarcinomas is even scarcer situations. We present the case of a 19-year-old patient who was initially submitted to surgery with preoperative diagnosis of ectopic pregnancy. At that moment a left salpingectomy was performed, and the histopathological studies revealed the presence of a left tubal gestational choriocarcinoma...
January 2018: Anticancer Research
https://www.readbyqxmd.com/read/29248195/is-chemotherapy-always-necessary-for-patients-with-nonmetastatic-gestational-trophoblastic-neoplasia-with-histopathological-diagnosis-of-choriocarcinoma
#6
Antonio Braga, Vanessa Campos, Jorge Rezende Filho, Lawrence H Lin, Sue Yazaki Sun, Christiani Bisinoto de Souza, Rita de Cássia Alves Ferreira da Silva, Elaine Azevedo Soares Leal, Eduardo Silveira, Izildinha Maestá, José Mauro Madi, Elza H Uberti, Maurício Viggiano, Kevin M Elias, Neil Horowitz, Ross S Berkowitz
OBJECTIVE: To evaluate expectant management versus immediate chemotherapy following pathological diagnosis of gestational choriocarcinoma (GCC) in patients with nonmetastatic disease. METHODS: Multicenter retrospective cohort that included patients with histological diagnosis of GCC with nonmetastatic disease followed at one of thirteen Brazilian referral centers for gestational trophoblastic disease from January 2000 to December 2016. RESULTS: Among 3191 patients with gestational trophoblastic neoplasia, 199 patients with nonmetastatic GCC were identified...
December 13, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/29232272/relative-effects-of-age-race-and-stage-on-mortality-in-gestational-choriocarcinoma
#7
Christopher M Tarney, Chunqiao Tian, Eric R Craig, Barbara A Crothers, John K Chan, Glenn D Gist, Nicholas W Bateman, Thomas P Conrads, Chad A Hamilton, George Larry Maxwell, Kathleen M Darcy
OBJECTIVE: Gestational choriocarcinoma is a malignant form of gestational trophoblastic disease that usually arises after a molar pregnancy, but may follow any antecedent pregnancy. Investigations in this rare cancer are limited. We evaluated the prognostic effects of age, race, and stage in choriocarcinomas diagnosed for 4 decades. METHODS: Patients diagnosed as having gestational choriocarcinoma between 1973 and 2014 from the Surveillance, Epidemiology, and End Results program were eligible...
December 11, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/29223764/hypoxia-induced-and-hif1%C3%AE-vegf-mediated-tight-junction-dysfunction-in-choriocarcinoma-cells-implications-for-preeclampsia
#8
Yuan Zhang, Hai-Jun Zhao, Xin-Ru Xia, Fei-Yang Diao, Xiang Ma, Jing Wang, Li Gao, Jie Liu, Chao Gao, Yu-Gui Cui, Jia-Yin Liu
INTRODUCTION: Accumulated data indicate that placental hypoxia is implicated in the pathogenesis of preeclampsia (PE). Tight junction (TJ) is important structure that sustains normal placental barrier function, its dysregulation under hypoxia has been observed. This study was designed to explore hypoxia-induced TJ dysfunction in trophoblast cells and its possible involvement in PE pathophysiology. METHODS: Choriocarcinoma cells were grown in a monolayer and treated with cobalt chloride (CoCl2) to induce hypoxia...
December 6, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29223574/evaluation-of-the-effects-of-antiepileptic-drugs-on-folic-acid-uptake-by-human-placental-choriocarcinoma-cells
#9
Yuko Kurosawa, Ayako Furugen, Ayako Nishimura, Katsuya Narumi, Masaki Kobayashi, Ken Iseki
Folate status during pregnancy is important for fetal development and health. The placenta plays an important role in supplying the fetus with folate. Most women with epilepsy continue their medication during pregnancy. In the present study, we aimed to evaluate the effects of 16 antiepileptic drugs, clinically used for treatment of epilepsy, on folic acid uptake in two in vitro placental models, BeWo and JEG-3 cells. Short-term exposure to antiepileptic drugs had no effects on [3H]-folic acid uptake by BeWo cells...
December 6, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29217138/durable-remission-for-a-woman-with-refractory-choriocarcinoma-treated-with-anti-endoglin-monoclonal-antibody-and-bevacizumab-a-case-from-the-new-england-trophoblastic-disease-center-brigham-and-women-s-hospital-and-dana-farber-cancer-institute
#10
Michael J Worley, Kevin M Elias, Neil S Horowitz, Bradley J Quade, Ross S Berkowitz
A 36-year-old with metastatic and refractory choriocarcinoma following single- and multi-agent chemotherapy and surgical metastectomy experienced a durable remission after receiving therapy with an anti-endoglin monoclonal antibody and bevacizumab. Treatment options and scientific advances in this disease are highlighted.
December 4, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/29215740/the-stat3-nfil3-signaling-axis-mediated-chemotherapy-resistance-is-reversed-by-raddeanin-a-via-inducing-apoptosis-in-choriocarcinoma-cells
#11
Zheng Peng, Chun Zhang, Wenjun Zhou, Chenchun Wu, Yi Zhang
OBJECTIVE: Chemotherapy resistance is the major issue of choriocarcinoma. Apoptosis always is the ultimate outcome of chemotherapeutic drugs, which considered one of the reasons of resistance. We investigated the role of STAT3/NFIL3 signaling-inhibited apoptosis in chemotherapy resistance and whether Raddeanin A (RA) could be a new drug to reverse resistance. METHODS: Established three drug-resistant cell lines as JEG-3/MTX, JEG-3/5-FU and JEG-3/VP16. NFIL3 and STAT3 expression was evaluated in the cells...
December 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29205146/primary-intestinal-choriocarcinoma-in-a-patient-with-long-standing-crohn-s-disease
#12
F Pezzuto, F Fortarezza, V Falcone, C Quintiliani, D Piscitelli
Extra-gonadal choriocarcinoma is an extremely rare highly malignant neoplasm with a poor prognosis. In the gastrointestinal tract it usually arises in stomach, esophagous, bowel intestine and colon. Only few cases are pure and not associated with a classic adenocarcinoma. The correlation of Crohn's disease with choriocarcinoma is not reported. We describe a case of 47-year old man with primary choriocarcinoma of the colon in a previously documented Crohn's disease.
May 2017: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/29202279/cancer-specific-inhibitory-effects-of-genetically-engineered-stem-cells-expressing-cytosine-deaminase-and-interferon-%C3%AE-against-choriocarcinoma-in-xenografted-metastatic-mouse-models
#13
Gyu-Sik Kim, Jae-Rim Heo, Seung U Kim, Kyung-Chul Choi
Cancer treatments using stem cells expressing therapeutic genes have been identified for various types of cancers. In this study, we investigated inhibitory effects of HB1.F3.CD and HB1.F3.CD.IFN-β cells expressing Escherichia coli cytosine deaminase (CD) and human interferon-β (IFN-β) genes in intravenously (i.v.) injected mice with a metastasis model. In this treatment, pro-drug 5-fluorocytosine (5-FC) is converted to cytotoxic drug 5-fluorouracil by hNSCs expressing the CD gene, which inhibits DNA synthesis in cancer cells...
December 1, 2017: Translational Oncology
https://www.readbyqxmd.com/read/29199729/epidemiology-of-gynecological-cancers-in-kamrup-urban-district-cancer-registry
#14
D Barman, J D Sharma, D Barmon, A C Kataki, A Sharma, M Kalita
BACKGROUND: Cancers of the female reproductive system - namely cancer of the cervix, corpus uteri, ovarian, vulvar, vaginal, fallopian tube cancers and choriocarcinoma are an important cause of cancer morbidity and mortality among women worldwide. It is estimated to be the third most common group of malignancies in women. The comprehensive global cancer statistics from the International Agency for Research on Cancer indicate that gynaecological cancers accounted for 20% of the 14.1 million estimated new cancer cases and 8...
January 2017: Indian Journal of Cancer
https://www.readbyqxmd.com/read/29198970/the-choriocarcinoma-cell-line-jeg-3-upregulates-regulatory-t-cell-phenotypes-and-modulates-pro-inflammatory-cytokines-through-hla-g
#15
Wenna Nascimento Melsted, Sara Hyldig Matzen, Mads Hald Andersen, Thomas Vauvert F Hviid
An understanding of the interactions between immune cells and trophoblast cells, as well as choriocarcinoma cells, are of extreme importance in reproductive immunology and cancer immunology. In this study, we found that the human HLA-G-positive choriocarcinoma cell line JEG-3 upregulates CD4+CD25hiCD127lo T cells, increases the expression of HLA-G+CD4+ and CD8+ T cells, and decreases the expression of ILT2+ on CD4+ T cells in resting PBMCs after six days of co-culture. Expression of HLA-G on JEG-3 cells did not affect regulatory T cell phenotypes, but promoted modulation of pro-inflammatory cytokines IFN-γ, TNF-α and IL-17A...
November 30, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/29197012/co-culture-of-h295r-adrenocortical-carcinoma-and-bewo-choriocarcinoma-cells-to-study-feto-placental-interactions-focus-on-estrogen-biosynthesis
#16
Andrée-Anne Hudon Thibeault, J Thomas Sanderson, Cathy Vaillancourt
Estrogens are produced in large amounts during pregnancy, as a result of a tightly regulated cooperation between the maternal and fetal adrenal cortex, which produce androgen precursors, and the placental villous trophoblast, which transforms these precursors into estrogens. These estrogens play an important role in proper placental function, in adaptation of the mother to pregnancy, as well as in adequate fetal development. Disruption of estrogen production is associated with poor pregnancy outcomes and fetal malformation or altered fetal programming...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29183227/malignant-mixed-germ-cell-tumor-overgrowing-a-gonadoblastoma-in-a-female-with-a-46-xx-karyotype-a-case-report
#17
Maria A Arafah, Leen E Raddaoui
Gonadoblastoma is an uncommon ovarian tumor arising primarily in females with gonadal dysgenesis and a 46, XY karyotype. Germ cell tumors arising within and/or overgrowing a gonadoblastoma have been reported. We report a rare case of a malignant mixed germ cell tumor (yolk sac tumor and choriocarcinoma) arising in a gonadoblastoma of the left ovary in a 19-year-old female with a 46, XX karyotype. The patient's initial α-fetoprotein level was 20 000 KIU/L. The patient underwent a laparoscopic unilateral salpingo-oophorectomy with omentectomy and peritoneal washing followed by adjuvant chemotherapy...
November 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29169400/hypermethylation-and-loss-of-retinoic-acid-receptor-responder-1-expression-in-human-choriocarcinoma
#18
H Huebner, R Strick, D L Wachter, S Kehl, P L Strissel, R Schneider-Stock, A Hartner, W Rascher, L C Horn, M W Beckmann, M Ruebner, F B Fahlbusch
BACKGROUND: Human placental development resembles tumorigenesis, due to the invasive and fusogenic potential of trophoblasts. However, these features are tightly controlled in trophoblasts. Disturbance of this spatial and temporal regulation is thought to contribute to the rare formation of choriocarcinomas. Promoter hypermethylation and loss of the tumor suppressor Retinoic acid receptor responder 1 (RARRES1) were shown to contribute to cancer progression. Our study investigated the epigenetic and transcriptional regulation of RARRES1 in healthy human placenta in comparison to choriocarcinoma cell lines and cases...
November 23, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29166539/an-unusual-cause-of-headache-and-sudden-death-of-a-young-sailor-postmortem-computed-tomography-and-histological-findings-of-a-fatal-retroperitoneal-malignant-mixed-germ-cell-tumor
#19
Belinda Lee, Michelle Chan, Ronald Goh
A 26-year-old Caucasian sailor, with no past medical history aside from headache for the last 1 week, was found dead in his cabin. The body was stored in a refrigerator on board and disembarked for autopsy 3 days later. Autopsy showed a large, nodular, necrotic and hemorrhagic retroperitoneal mass, and smaller hemorrhagic nodules in the brain, lungs, liver, and left kidney, with the brain being markedly edematous. Both testes were descended and normal. Histologically, the retroperitoneal mass showed a malignant mixed germ cell tumor comprising choriocarcinoma, embryonal carcinoma, and teratoma components...
November 22, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29158366/therapeutic-anticoagulation-in-patients-with-primary-brain-tumors-or-secondary-brain-metastasis
#20
REVIEW
Richard J Lin, David L Green, Gunjan L Shah
Patients with primary or metastatic brain tumors are at increased risk of developing venous thromboses. However, the potential benefit of therapeutic anticoagulation in these patients must be weighed against the deadly complication of intracranial hemorrhage. In this review, we summarize available evidence and recent studies of intracranial bleeding risks in primary and metastatic tumors and the impact of therapeutic anticoagulation. We find that for the majority of primary and treated metastatic brain tumors, the risk of spontaneous bleeding is acceptable and not further increased by careful therapeutic anticoagulation with low molecular weight heparin or direct oral anticoagulants, although thrombocytopenia (platelet count less than 50,000/μL) and other coagulopathies are relative contraindications...
November 20, 2017: Oncologist
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