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https://www.readbyqxmd.com/read/28938535/accurate-primary-germ-cell-cancer-diagnosis-using-serum-based-microrna-detection-amptsmir-test
#1
Ton van Agthoven, Leendert H J Looijenga
Multiple studies, including various methods and overall limited numbers of mostly heterogeneous cases, indicate that the level of embryonic stem cell microRNAs (miRs) (e.g. 371a-3p, 372-3p, 373-3p, and 367-3p) are increased in serum at primary diagnosis of almost all testicular germ cell cancer (TGCC). Here we determine the status of three of these miRs in serum samples of 250 TGCC patients, collected at time of primary diagnosis, compared with 60 non-TGCC patients and 104 male healthy donors. The levels of miRs were measured by the robust ampTSmiR test, including magnetic bead-based miR isolation and target specific pre-amplification followed by real-time quantitative PCR (RT-qPCR) detection...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938237/fertility-restoration-with-spermatogonial-stem-cells
#2
Francesca de Michele, Maxime Vermeulen, Christine Wyns
PURPOSE OF REVIEW: This review evaluates the state of the art in terms of challenges and strategies used to restore fertility with spermatogonial stem cells retrieved from prepubertal boys affected by cancer. Although these boys do not yet produce spermatozoa, the only option to preserve their fertility is cryopreservation of spermatogonial stem cells in the form of testicular cell suspensions or whole tissue pieces. Different techniques have been described to achieve completion of spermatogenesis from human, spermatogonial stem cells but none is yet ready for clinical application...
September 21, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/28935185/impact-of-hospital-case-volume-on-testicular-cancer-outcomes-and-practice-patterns
#3
Solomon L Woldu, Justin T Matulay, Timothy N Clinton, Nirmish Singla, Laura-Maria Krabbe, Ryan C Hutchinson, Arthur Sagalowsky, Yair Lotan, Vitaly Margulis, Aditya Bagrodia
BACKGROUND: Given the rarity of testicular germ cell tumors (TGCTs) and the complex aspects of management, we evaluate the effect of hospital TGCT case volume on overall survival outcomes and practice patterns. MATERIALS AND METHODS: The National Cancer Database was queried for patients diagnosed with seminoma or nonseminomatous germ cell tumor (NSGCT). Hospitals were classified by case volume as high (99th percentile, ≥26.1 cases annually), high-intermediate (95-99th percentile, 14...
September 18, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28921451/distribution-of-malignant-lymphomas-in-the-anterior-mediastinum-a-single-institution-study-of-76-cases-in-japan-1997-2016
#4
Akiko Miyagi Maeshima, Hirokazu Taniguchi, Tomotaka Suzuki, Sayako Yuda, Kosuke Toyoda, Nobuhiko Yamauchi, Shinichi Makita, Suguru Fukuhara, Wataru Munakata, Dai Maruyama, Yukio Kobayashi, Kensei Tobinai
We analyzed the distribution of tumors and lymphomas of the anterior mediastinum diagnosed between 1997 and 2016 at the National Cancer Center Hospital, Japan. The median age of 283 patients with anterior mediastinal tumors was 48 (range 6-84) years, and 143 (51%) were male. The incidence of tumors was as follows: thymoma, 34%; thymic carcinoma, 16%; primary mediastinal large B-cell lymphoma (PMBL), 13%; germ cell tumors, 10%; classical Hodgkin lymphoma (CHL), 9%; thymic cyst, 7%; metastatic tumors, 3%; T lymphoblastic leukemia/lymphoma (T-LBL), 2%; other lymphomas, 3%; and others, 3%...
September 18, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28919321/clinicopathological-pattern-and-outcome-of-pediatric-malignant-ovarian-germ-cell-tumors-south-egypt-cancer-institute-experience
#5
Amany Ali, Heba Sayed, Mohamed Salem, Mohamed Hamdy, Amro Farok
BACKGROUND: Malignant ovarian germ cell tumors (MOGCTs) are rare and represent 1-1.5% of all cancers in children and adolescents. The aim of this study is to analyze the clinicopathological pattern at presentation and management and outcome of MOGCTs in children and adolescents. PATIENTS AND METHODS: Retrospective study included all girls diagnosed with MOGCTs between January 2005 and January 2015 in Pediatric and Surgical Oncology Departments at South Egypt Cancer Institute, Assiut University...
September 1, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28911263/potential-role-of-oct4-in-leukemogenesis
#6
Tiphanie Picot, Sanae Kesr, Yuenv Wu, Carmen Aanei, Pascale Flandrin-Gresta, Sylvie Tondeur, Emmanuelle Tavernier, Eric Wattel, Denis Guyotat, Lydia Campos
Embryonic stem cells typically show properties of long term self-renewal and lack of differentiation. When appropriately stimulated, they are able to differentiate into all cell lineages, and lose their self-renewal characteristics. These properties are controlled by a series of genes encoding several transcription factors including OCT4, the product of POU5F1 gene. OCT4 is expressed in germ-cell tumors, but also aberrantly in cancers developing in differentiated tissues. In a previous study, we observed a high expression of OCT4 in acute myeloid cell lines and primary cells, regardless of the Acute Myeloid Leukemia subtype...
September 14, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28903391/cancer-testis-antigen-piwil2-suppresses-circadian-rhythms-by-regulating-the-stability-and-activity-of-bmal1-and-clock
#7
Yilu Lu, Xulei Zheng, Wei Hu, Shasha Bian, Zhiwei Zhang, Dachang Tao, Yunqiang Liu, Yongxin Ma
Circadian rhythms are regulated by transcriptional and post-translational feedback loops generated by appropriate functions of clock proteins. Rhythmic degradation of the circadian clock proteins is critical for maintenance of the circadian oscillations. Notably, circadian clock does not work during spermatogenesis and can be disrupted in tumors. However, the underlying mechanism that suppresses circadian rhythms in germ cells and cancer cells remains largely unknown. Here we report that the cancer/testis antigen PIWIL2 can repress circadian rhythms both in the testis and cancer cells...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28893722/parental-occupational-exposure-to-organic-solvents-and-testicular-germ-cell-tumors-in-their-offspring-nord-test-study
#8
Charlotte Le Cornet, Béatrice Fervers, Eero Pukkala, Tore Tynes, Maria Feychting, Johnni Hansen, Kayo Togawa, Karl-Christian Nordby, Susanne Oksbjerg Dalton, Sanni Uuksulainen, Pernilla Wiebert, Torill Woldbæk, Niels E Skakkebæk, Ann Olsson, Joachim Schüz
BACKGROUND: Testicular germ cell tumors (TGCT) were suggested to have a prenatal environmentally related origin. The potential endocrine disrupting properties of certain solvents may interfere with the male genital development in utero. OBJECTIVES: We aimed to assess the association between maternal and paternal occupational exposures to organic solvents during the prenatal period and TGCT risk in their offspring. METHODS: This registry-based case control study included TGCT cases aged 14-49 y (n=8,112) diagnosed from 1978 to 2012 in Finland, Norway, and Sweden...
June 30, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28893481/telomerase-based-anticancer-immunotherapy-and-vaccines-approaches
#9
REVIEW
Chahal Kailashiya, Hanjabam Barun Sharma, Jyotsna Kailashiya
Telomerase is a Reverse Transcriptase that maintains the telomere length. It is absent in most somatic cells but is found in stem cells, germ cells and around 90% of cancers. It plays a crucial role in developing and maintaining cancer cells. Telomerase, a HLA class-I antigen, is able to stimulate cell mediated immune response by inducing cytotoxic T-cells. This property of telomerase is being exploited in targeting cancers by host's own immune responses; stimulated by various Human Telomerase Reverse Transcriptase (hTERT) derived vaccines...
September 8, 2017: Vaccine
https://www.readbyqxmd.com/read/28891094/regulation-of-the-tumor-suppressor-pten-by-natural-anticancer-compounds
#10
REVIEW
Do-Hee Kim, Jinyoung Suh, Young-Joon Surh, Hye-Kyung Na
The tumor suppressor phosphatase and tensin homologue (PTEN) has phosphatase activity, with phosphatidylinositol (3,4,5)-trisphosphate (PIP3), a product of phosphatidylinositol 3-kinase (PI3K), as one of the principal substrates. PTEN is a negative regulator of the Akt pathway, which plays a fundamental role in controlling cell growth, survival, and proliferation. Loss of PTEN function has been observed in many different types of cancer. Functional inactivation of PTEN as a consequence of germ-line mutations or promoter hypermethylation predisposes individuals to malignancies...
August 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28890157/the-cumulative-burden-of-surviving-childhood-cancer-an-initial-report-from-the-st-jude-lifetime-cohort-study-sjlife
#11
Nickhill Bhakta, Qi Liu, Kirsten K Ness, Malek Baassiri, Hesham Eissa, Frederick Yeo, Wassim Chemaitilly, Matthew J Ehrhardt, Johnnie Bass, Michael W Bishop, Kyla Shelton, Lu Lu, Sujuan Huang, Zhenghong Li, Eric Caron, Jennifer Lanctot, Carrie Howell, Timothy Folse, Vijaya Joshi, Daniel M Green, Daniel A Mulrooney, Gregory T Armstrong, Kevin R Krull, Tara M Brinkman, Raja B Khan, Deo K Srivastava, Melissa M Hudson, Yutaka Yasui, Leslie L Robison
BACKGROUND: Survivors of childhood cancer develop early and severe chronic health conditions (CHCs). A quantitative landscape of morbidity of survivors, however, has not been described. We aimed to describe the cumulative burden of curative cancer therapy in a clinically assessed ageing population of long-term survivors of childhood cancer. METHODS: The St Jude Lifetime Cohort Study (SJLIFE) retrospectively collected data on CHCs in all patients treated for childhood cancer at the St Jude Children's Research Hospital who survived 10 years or longer from initial diagnosis and were 18 years or older as of June 30, 2015...
September 7, 2017: Lancet
https://www.readbyqxmd.com/read/28889760/an-analysis-of-clinical-characteristics-and-patient-outcomes-in-primary-mediastinal-sarcomas
#12
Omar Abdel-Rahman
BACKGROUND: Published data concerning primary mediastinal sarcomas are limited to small-sized retrospective series.  This study reviewed the clinical outcomes of these cases from the SEER (surveillance, epidemiology and end results) database. METHODS: Primary mediastinal sarcomas (1988 - 2013) were assembled from the SEER database. The incidence and 10-year cancer-specific survival rates were compared to other primary mediastinal malignancies (thymic carcinoma, germ cell tumors, neurogenic tumors, Hodgkin / non Hodgkin lymphomas) as well as to non mediastinal sarcomas...
September 14, 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28881587/mgmt-and-calca-promoter-methylation-are-associated-with-poor-prognosis-in-testicular-germ-cell-tumor-patients
#13
Camila Maria da Silva Martinelli, André van Helvoort Lengert, Flavio Mavignier Cárcano, Eduardo Caetano Albino Silva, Mariana Brait, Luiz Fernando Lopes, Daniel Onofre Vidal
Testicular germ cell tumors (TGCT) represent the second main cause of cancer-related death in young men. Despite high cure rates, refractory disease results in poor prognosis. Epigenetic reprogramming occurs during the development of seminomas and non-seminomas. Understanding the molecular and genetic basis of these tumors would represent an important advance in the search for new TGCT molecular markers. Hence the frequency of methylation of a gene panel (VGF, MGMT, ADAMTS1, CALCA, HOXA9, CDKN2B, CDO1 and NANOG) was evaluated in 72 primary TGCT by quantitative methylation specific PCR...
August 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28871003/association-between-rassf1a-promoter-methylation-and-testicular-germ-cell-tumor-a-meta-analysis-and-a-cohort-study
#14
Dora Markulin, Aleksandar Vojta, Ivana Samaržija, Marija Gamulin, Ivona Bečeheli, Irena Jukić, Čedomir Maglov, Vlatka Zoldoš, Aleksandra Fučić
BACKGROUND: The RAS association domain family protein 1a (RASSF1A) is a prominent tumor suppressor gene showing altered promoter methylation in testicular germ cell tumors (TGCT). RASSF1A promoter hypermethylation might represent an early event in TGCT tumorigenesis. We investigated whether the RASSF1A promoter methylation in peripheral blood of TGCT patients can be associated with testicular cancer risk. MATERIALS AND METHODS: Following a meta-analysis, we performed a cohort study including 32 testicular cancer patients and 32 healthy controls...
September 2017: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/28866371/no-longer-any-role-for-routine-follow-up-chest-x-rays-in-men-with-stage-i-germ-cell-cancer
#15
H De La Pena, A Sharma, C Glicksman, J Joseph, M Subesinghe, Z Traill, C Verrill, M Sullivan, J Redgwell, E Bataillard, E Pintus, N Dallas, A Gogbashian, M Tuthill, A Protheroe, M Hall
Following radical orchidectomy for testicular cancer, most patients undergo protocolled surveillance to detect tumour recurrences rather than receive adjuvant chemotherapy. Current United Kingdom national and most international guidelines recommend that patients require a chest x-ray (CXR) and serum tumour markers at each follow-up visit as well as regular CT scans; there is however, variation among cancer centres with follow-up protocols. Seminomas often do not cause tumour marker elevation; therefore, CT scans are the main diagnostic tool for detecting relapse...
October 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28862210/pulmonary-toxicity-following-bleomycin-use-a-single-center-experience
#16
Irappa Madabhavi, Gaurang Modi, Apurva Patel, Asha Anand, Harsha Panchal, Sonia Parikh
BACKGROUND: Bleomycin-induced pulmonary (BIP) toxicity is a notorious entity and cropped up in roughly 10% of cases. The aim of the study is to evaluate BIP at our tertiary care cancer center. PATIENTS AND METHODS: This is a retrospective, analytical study conducted at a tertiary care center from January 1998 to December 2012. Records of all the patients who were offered bleomycin chemotherapy as an integral part of adriamycin, bleomycin, vinblastine, and dacarbazine or bleomycin, etoposide, and cisplatin regimen in Hodgkin disease (HD) or germ cell tumor (GCT) were studied for the study inclusion criteria...
July 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28858403/songs-about-cancer-gene-expression-and-the-biochemistry-of-photosynthesis
#17
Richard H Heineman
These three biology songs can be used for educational purposes to teach about biochemical concepts. They touch on three different topics: (1) cancer progression and germ cells, (2) gene expression, promoters, and repressors, and (3) electronegativity and the biochemical basis of photosynthesis. © 2017 by The International Union of Biochemistry and Molecular Biology, 2017.
August 31, 2017: Biochemistry and Molecular Biology Education
https://www.readbyqxmd.com/read/28853925/sex-determination-in-the-mammalian-germline
#18
Cassy Spiller, Peter Koopman, Josephine Bowles
Sexual reproduction crucially depends on the production of sperm in males and oocytes in females. Both types of gamete arise from the same precursor, the germ cells. We review the events that characterize the development of germ cells during fetal life as they commit to, and prepare for, oogenesis or spermatogenesis. In females, fetal germ cells enter meiosis, whereas in males they delay meiosis and instead lose pluripotency, activate an irreversible program of prospermatogonial differentiation, and temporarily cease dividing...
August 30, 2017: Annual Review of Genetics
https://www.readbyqxmd.com/read/28851592/smoking-and-disease-outcomes-in-patients-with-malignant-germ-cell-tumors
#19
Elizabeth O'Donnell, Sarah C Markt, Rowan Miller, Brandon Bernard, Laurence Albiges, Clair Beard, Christopher Sweeney
BACKGROUND: To our knowledge, no studies have evaluated the association between smoking and stage at diagnosis or survival among men with germ cell tumors (GCTs). We therefore evaluated the association between smoking and GCT presentation and outcomes. METHODS: Electronic medical records of 1161 patients with GCT treated at Dana-Farber Cancer Institute between 1997 and 2013 were reviewed. Outcomes of interest were stage at diagnosis, relapse from clinical stage I (CSI) disease, relapse after first-line chemotherapy, and death from disease...
August 3, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28844590/surgical-approaches-anaesthetic-management-and-outcome-in-pediatric-superior-mediastinal-tumors
#20
Gehad Ahmed, Mohammed M Hegazy, Tarek Raafat, Hanafy Hafez, Sayed Fadel, Maged Elshafiey
BACKGROUND: Pediatric superior mediastinal tumors are a heterogeneous group of tumors with marked variation in pathology and extension. We reviewed our experience with different surgical approaches to tumors originating from or extending to superior mediastinum in pediatrics. PATIENTS AND METHODS: The medical records of all patients who had undergone resection for superior mediastinal tumors in Children's Cancer Hospital - Egypt, between January 2008 to December 2015, were reviewed for demographic data, clinico-pathological features, radiologic findings, operative techniques and outcome...
August 22, 2017: Journal of the Egyptian National Cancer Institute
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