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Germ Cell Tumor

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https://www.readbyqxmd.com/read/27912078/mouse-double-minute-2-homolog-actively-suppresses-p53-activity-in-oocytes-during-mouse-folliculogenesis
#1
Chen-Xi Zhang, Qin Zhang, Yin-Yin Xie, Xue-Yan He, Cong Xiang, Xiao-Shuang Hou, Ying Zhou, Lai Chen, Guo-Xin Zhang, Geng Liu
The p53 signaling network is indispensible in cellular stress responses and tumor suppression. Negative regulations of p53 by mouse double minute 2 and 4 homologs (MDM2) and (MDM4) are an integrated component of the network and have been implicated in regulating the stress responses and the maintenance of normal development and homeostasis of multiple somatic cell lineages. However, the regulatory role of MDM2 on p53 and stress responses in female germ cells remains undetermined. Here, we used the Cre-loxP system to delete Mdm2 in oocytes at different stages of folliculogenesis in mice...
November 29, 2016: American Journal of Pathology
https://www.readbyqxmd.com/read/27911225/successful-treatment-of-mixed-yolk-sac-tumor-and-mature-teratoma-in-the-spinal-cord-case-report
#2
Akitake Mukasa, Shunsuke Yanagisawa, Kuniaki Saito, Shota Tanaka, Keisuke Takai, Junji Shibahara, Masachika Ikegami, Yusuke Nakao, Katsushi Takeshita, Masao Matsutani, Nobuhito Saito
Primary spinal germ cell tumors are rare, and spinal nongerminomatous germ cell tumors represent an even rarer subset for which no standard therapy has been established. The authors report the case of a 24-year-old woman with multifocal primary spinal germ cell tumors scattered from T-12 to L-5 that consisted of yolk sac tumor and mature teratoma. After diagnostic partial resection, the patient was treated with 30 Gy of craniospinal irradiation and 30 Gy of local spinal irradiation, followed by 8 courses of chemotherapy based on ifosfamide, cisplatin, and etoposide (ICE)...
December 2, 2016: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27909618/clinico-pathological-outcomes-of-post-primary-and-salvage-chemotherapy-retroperitoneal-lymph-node-dissection-for-mixed-germ-cell-tumors-king-hussein-cancer-center-experience
#3
Kholoud Alqasem, Ibrahim Abukhiran, Judy Jasser, Tamer Bisharat, Riyad T Ellati, Jakub Khzouz, Ibrahim Al-Saidi, Ali Al-Daghamin
OBJECTIVE: We sought to characterize clinical and pathologic outcomes of advanced mixed germ cell tumors after retroperitoneal lymph node dissection for post-chemotherapy residual masses. MATERIAL AND METHODS: Between January 2006 and November 2015, 56 patients underwent retroperitoneal lymph node dissection (RPLND) for residual masses of greater than 1 cm after receiving either primary chemotherapy or salvage chemotherapy. Retrospective review of the patients' characteristics, clinical, pathological, and treatment outcomes were performed after institutional review board (IRB) and ethics committee approval...
December 2016: Turkish Journal of Urology
https://www.readbyqxmd.com/read/27906881/stem-cells-and-clinical-practice-new-advances-and-challenges-at-the-time-of-emerging-problems-with-induced-pluripotent-stem-cell-therapies
#4
Mariusz Z Ratajczak, Kamila Bujko, Wojciech Wojakowski
Humans, like other species that reproduce sexually, originate from a fertilized oocyte (zygote), which is a totipotent stem cell giving rise to an adult organism. During the process of embryogenesis, stem cells at different levels of the developmental hierarchy establish all 3 germ layers and give rise to tissue‑committed stem cells, which are responsible for rejuvenation of a given tissue or organ. The robustness of the stem cell compartment is one of the major factors that directly impact life quality as well as lifespan...
November 10, 2016: Polskie Archiwum Medycyny Wewnętrznej
https://www.readbyqxmd.com/read/27901106/the-role-of-pim1-pim2-kinases-in-tumors-of-the-male-reproductive-system
#5
Manuel Pedro Jiménez-García, Antonio Lucena-Cacace, María José Robles-Frías, Maja Narlik-Grassow, Carmen Blanco-Aparicio, Amancio Carnero
The PIM family of serine/threonine kinases has three highly conserved isoforms (PIM1, PIM2 and PIM3). PIM proteins are regulated through transcription and stability by JAK/STAT pathways and are overexpressed in hematological malignancies and solid tumors. The PIM kinases possess weak oncogenic abilities, but enhance other genes or chemical carcinogens to induce tumors. We generated conditional transgenic mice that overexpress PIM1 or PIM2 in male reproductive organs and analyzed their contribution to tumorigenesis...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27899190/genetic-changes-associated-with-testicular-cancer-susceptibility
#6
REVIEW
Louise C Pyle, Katherine L Nathanson
Testicular germ cell tumor (TGCT) is a highly heritable cancer primarily affecting young white men. Genome-wide association studies (GWAS) have been particularly effective in identifying multiple common variants with strong contribution to TGCT risk. These loci identified through association studies have implicated multiple genes as associated with TGCT predisposition, many of which are unique among cancer types, and regulate processes such as pluripotency, sex specification, and microtubule assembly. Together these biologically plausible genes converge on pathways involved in male germ cell development and maturation, and suggest that perturbation of them confers susceptibility to TGCT, as a developmental defect of germ cell differentiation...
October 2016: Seminars in Oncology
https://www.readbyqxmd.com/read/27892951/comparison-of-three-or-fewer-high-dose-chemotherapy-cycles-as-salvage-treatment-in-germ-cell-tumors-in-first-relapse
#7
F Gössi, M Spahn, M Zweifel, S Panagiotis, A Mischo, F Stenner, U Hess, D Berthold, M Bargetzi, J Schardt, T Pabst
No abstract text is available yet for this article.
November 28, 2016: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/27889662/pediatric-pineal-germinomas-epigenetic-and-genomic-approach
#8
Monserrat Pérez-Ramírez, Alejo Justino Hernández-Jiménez, Armando Guerrero-Guerrero, Alicia Georgina Siordia-Reyes, Marta Elena Hernández-Caballero, Antonio García-Méndez, Fernando Chico-Ponce de León, Fabio Abdel Salamanca-Gómez, Normand García-Hernández
OBJECTIVE: We identify and correlate chromosomal alterations, methylation patterns and gene expression in pediatric pineal germinomas. METHODS: CGH microarray, methylation and gene expression were performed through the Agilent platform. The results were analyzed with MatLab software, MapViewer, DAVID, GeneCards and Hippie. RESULTS: Amplifications were found in 1q24.2, 1q31.3, 2p11.2, 3p22.2, 7p13, 7p15.2, 8p22, 12p13.2, 14q24.3 y 22q12; and deletions were found in 1q21...
November 19, 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27889025/pineal-region-masses-in-pediatric-patients
#9
REVIEW
Benita Tamrazi, Marvin Nelson, Stefan Blüml
A review of pediatric pineal region tumors is provided with emphasis on advanced imaging techniques. The 3 major categories of pineal region tumors include germ cell tumors, pineal parenchymal tumors, and tumors arising from adjacent structures such as tectal astrocytomas. The clinical presentation, biochemical markers, and imaging of these types of tumors are reviewed.
February 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27879538/efficacy-of-ifosfamide-cisplatin-etoposide-ice-chemotherapy-for-a-cns-germinoma-in-a-child-with-down-syndrome
#10
Seishiro Nodomi, Katsutsugu Umeda, Hiroo Ueno, Satoshi Saida, Hidefumi Hiramatsu, Takeshi Funaki, Yoshiki Arakawa, Takashi Mizowaki, Souichi Adachi, Toshio Heike
Intracranial germ cell tumor is sometimes associated with Down syndrome; however, no optimal treatment has been developed due to the high risk of recurrence and treatment-related mortality. Here, we report on a patient with an intracranial germinoma in the bilateral basal ganglia. The patient received 3 courses of ifosfamide-cisplatin-etoposide in combination with whole-brain irradiation (24 Gy), with no serious complications. The patient is alive and disease free 16 months after the initial diagnosis. This regimen is a feasible treatment for intracranial germ cell tumor associated with Down syndrome, although careful attention must be paid to the increased risk for severe infection...
November 22, 2016: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/27878779/total-estimated-effective-doses-from-radiologic-imaging-modalities-of-children-with-cancer-a-single-center-experience
#11
Derya Özyörük, Suna Emir, Hacı Ahmet Demir, Gülşah Bayram Kabaçam, Bahattin Tunç
BACKGROUND: Recently, awareness of the cumulative radiation exposure for pediatric oncology patients has been increasing, together with increased survival rates and longer life expectancy. The aim of our study was to quantify the amount of ionising radiation from imaging modalities of pediatric oncology patients. METHODS: Eighty-eight patients who were diagnosed with childhood cancer and followed up for 5 years between 2004-2014 in our center were included in the study...
November 23, 2016: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/27872413/is-there-any-difference-between-seminomas-and-nonseminomatous-germ-cell-tumors-on-shear-wave-elastography-a-preliminary-study
#12
Atilla Suleyman Dikici, Mehmet Emin Er, Deniz Alis, Cesur Samanci, Fethi Emre Ustabasioglu, Cetin Demirdag, Haydar Durak, Fatih Kantarci, Ismail Mihmanli
OBJECTIVES: The purpose of this study was to evaluate the ability of shear wave elastography (SWE) to differentiate seminomas from nonseminomatous germ cell tumors. METHODS: Approval for this retrospective study was obtained from the local Ethics Committee of Istanbul University Cerrahpasa Medical School. Fifteen patients with malignant testicular lesions were examined by grayscale sonography, color or power Doppler sonography, and SWE between February 2011 and October 2015...
December 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27870561/high-dose-chemotherapy-and-autologous-peripheral-blood-stem-cell-transplantation-for-relapsed-metastatic-germ-cell-tumors-the-indiana-university-experience
#13
Nabil Adra, Rafat Abonour, Sandra K Althouse, Costantine Albany, Nasser H Hanna, Lawrence H Einhorn
Purpose Patients with relapsed metastatic germ cell tumor (GCT) can be cured with second-line and even third-line regimens. We report survival outcomes of patients treated with high-dose chemotherapy (HDCT) and peripheral-blood stem-cell transplantation (PBSCT) at Indiana University between 2004 and 2014. Patients and Methods We conducted a retrospective analysis of 364 consecutive patients with GCT who progressed after cisplatin-based combination chemotherapy and were subsequently treated with HDCT and PBSCT...
November 21, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/27869447/-testing-of-mutations-in-brca1-and-brca2-genes-in-tumor-tissues-possibilities-and-limitations
#14
Hana Vošmiková, Aleš Ryška, Kateřina Sieglová, Jan Laco
Development of targeted cancer therapy is accompanied by a search for markers allowing prediction of response to the particular treatment. Recently, the interest is focused, among other neoplasms, also on the therapy of ovarian cancer using new inhibitors of poly (ADP-ribose) polymerase (PARP) proteins, nuclear enzymes involved in the repair of single-stranded DNA breaks. The greatest benefit from the administration of PARP inhibitors have patients with a deleterious or potentially deleterious germ-line or somatic mutation of BRCA1 or BRCA2, two genes responsible for repair of double stranded DNA breaks...
2016: Ceskoslovenská Patologie
https://www.readbyqxmd.com/read/27867337/oligometastatic-growing-teratoma-syndrome-a-case-for-an-aggressive-surgical-approach
#15
William S Gange, Robert H Blackwell, John Biemer, Güliz A Barkan, Maria M Picken, Marcus L Quek
Growing teratoma syndrome is an infrequent presentation of testicular cancer. We present a case of growing teratoma syndrome in a patient who initially presented with clinical stage I nonseminomatous testicular germ cell tumor, who subsequently developed large volume oligometastases to the retroperitoneum, thorax, and thigh. Despite two regimens of chemotherapy, his disease progressed. Complete surgical extirpation of all gross tumors confirmed mature teratoma. An aggressive surgical approach, including postchemotherapy resection of all known metastatic sites, can provide long-term disease-free survival...
October 2016: Current Urology
https://www.readbyqxmd.com/read/27866682/-adolescent-and-young-adults-ayas-brain-tumor-national-web-conference-on-behalf-of-anocef-go-aja-and-sfce-societies
#16
Didier Frappaz, Marie-Pierre Sunyach, Emilie Le Rhun, Marie Blonski, Valérie Laurence, Alice Bonneville Levard, Hugues Loiseau, David Meyronnet, Arnaud Callies, F Laigle-Donadey, Cecile Faure Conter
: The skills of adult versus pediatric neuro-oncologists are not completely similar though additive. Because the tumors and their protocols are different and the tolerance and expected sequelae are specific. Multidisciplinary meetings including adult and pediatric neuro-oncologists are warranted to share expertise. Since 2008, a weekly national web based conference was held in France. Any patient with the following criteria could be discussed: Adolescent and Young Adults aged between 15 and 25 years, and any adult with a pediatric type pathology, including medulloblastoma, germ cell tumors, embryonic tumors, ependymoma, pilocytic astrocytoma...
November 17, 2016: Bulletin du Cancer
https://www.readbyqxmd.com/read/27864217/risk-of-second-malignant-neoplasms-in-women-and-girls-with-germ-cell-tumors
#17
Z Liao, M C Rodrigues, J N Poynter, J F Amatruda, C Rodriguez-Galindo, A L Frazier
Background While an elevated risk of second malignant neoplasms (SMNs) has been observed in men treated for germ cell tumors (GCTs), risk of SMNs have not been quantified in adult women nor in girls treated for GCTs.Patients and Methods One-year survivors of primary GCTs diagnosed between January 1980 and December 2012 were identified from Surveillance, Epidemiology, and End Results registries (SEER 9). Risk of SMNs were calculated using SEER*Stat.Results Among 1,507 patients, a total of 47 SMNs were identified...
November 17, 2016: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/27863478/prognostic-value-of-cd66b-positive-tumor-infiltrating-neutrophils-in-testicular-germ-cell-tumor
#18
Yuta Yamada, Tohru Nakagawa, Toru Sugihara, Takamasa Horiuchi, Uran Yoshizaki, Tetsuya Fujimura, Hiroshi Fukuhara, Tomohiko Urano, Kenichi Takayama, Satoshi Inoue, Haruki Kume, Yukio Homma
BACKGROUND: Prognostic value of immune cells is not clear in testicular germ cell tumors (TGCTs). We aimed to investigate the prognostic value of tumor-infiltrating neutrophils in TGCTs. METHODS: A total of 102 patients who underwent orchiectomy for TGCT were investigated for CD66b positive tumor-infiltrating neutrophils (CD66b + TINs). Immmunostaining for CD66b was performed in 102 sections as described. Clinicopathological parameters as well as cancer specific survival and overall survival were assessed for correlation with CD66b + TIN density...
November 18, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27861143/intratumoral-heterogeneity-and-chemoresistance-in-nonseminomatous-germ-cell-tumor-of-the-testis
#19
Mehmet Asim Bilen, Kenneth R Hess, Matthew T Campbell, Jennifer Wang, Russell R Broaddus, Jose A Karam, John F Ward, Christopher G Wood, Seungtaek L Choi, Priya Rao, Miao Zhang, Aung Naing, Rosale General, Diana H Cauley, Sue-Hwa Lin, Christopher J Logothetis, Louis L Pisters, Shi-Ming Tu
BACKGROUND: Nonseminomatous germ cell tumor of the testis (NSGCT) is largely curable. However, a small group of patients develop refractory disease. We investigated the hypothesis that intratumoral heterogeneity contributes to the emergence of chemoresistance and the development of refractory tumor subtypes. RESULTS: Our institution's records for January 2000 through December 2010 included 275 patients whose primary tumor showed pure embryonal carcinoma (pure E); mixed embryonal carcinoma, yolk sac tumor, and teratoma (EYT); or mixed embryonal carcinoma, yolk sac tumor, seminoma, and teratoma (EYST)...
November 16, 2016: Oncotarget
https://www.readbyqxmd.com/read/27860291/survival-of-adolescents-with-cancer-treated-at-pediatric-versus-adult-oncology-treatment-centers-in-france
#20
Emmanuel Desandes, Laurence Brugieres, Valérie Laurence, Claire Berger, Justyna Kanold, Isabelle Tron, Jacqueline Clavel, Brigitte Lacour
BACKGROUND: In France, although children aged less than 15 years with cancer are usually referred to pediatric oncology centers, adolescents may be treated at pediatric or adult oncology centers. The objective was to compare survival according to their site of treatment. PROCEDURE: Using population-based registration, 15- to 19-year-old patients diagnosed with cancer in 2006 or 2007 and living in six French regions (accounting for 41% of the French population) were included...
November 15, 2016: Pediatric Blood & Cancer
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