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J Rojas-Ticona, M Fernández-Ibieta, L Nortes Cano, O Girón-Vallejo, P Reyes Ríos, I Martínez Castaño, V Villamil, J I Ruiz Jiménez
OBJECTIVES: To describe our experience in testicular and paratesticular tumors during the prepubertal stage, focusing especially on its character of benignity/malignancy and surgical treatment used. MATERIAL AND METHODS: Retrospective review of all testicular tumors in children under 12 years diagnosed and treated in our clinical setting from 1998-2015. Data on their presentation, study and management were collected. RESULTS: 17 children with prepubertal testicular tumors were identified...
January 15, 2016: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
Chunxia Liu, Yuanyuan Wang, Yuwen Xie, Bingcheng Li, Yunzhao Chen, Xiaobin Cui, Yan Qi, Yan Ren, Feng Li
No abstract text is available yet for this article.
February 2016: Pathology
Sushil Kumar, Amit Garg
No abstract text is available yet for this article.
October 8, 2016: Indian Pediatrics
Emilia Fisicaro, Carlotta Compari, Franco Bacciottini, Laura Contardi, Erika Pongiluppi, Nadia Barbero, Guido Viscardi, Pierluigi Quagliotto, Gaetano Donofrio, Marie Pierre Krafft
Biological and thermodynamic properties of a new homologous series of highly fluorinated bispyridinium cationic gemini surfactants, differing in the length of the spacer bridging the pyridinium polar heads in 1,1' position, are reported for the first time. Interestingly, gene delivery ability is closely associated with the spacer length due to a structural change of the molecule in solution. This conformation change is allowed when the spacer reaches the right length, and it is suggested by the trends of the apparent and partial molar enthalpies vs molality...
October 15, 2016: Journal of Colloid and Interface Science
Francesca Megiorni, Simona Camero, Simona Ceccarelli, Heather P McDowell, Olga Mannarino, Francesco Marampon, Barry Pizer, Rajeev Shukla, Antonio Pizzuti, Cinzia Marchese, Anna Clerico, Carlo Dominici
Aberrant DNA methylation has been frequently observed in many human cancers, including rhabdomyosarcoma (RMS), the most common soft tissue sarcoma in children. To date, the expression and function of the de novo DNA methyltransferase (DNMT) 3B in RMS have not yet been investigated. Our study show for the first time a significant up-regulation of DNMT3B levels in 14 RMS tumour samples and 4 RMS cell lines in comparison to normal skeletal muscle. Transfection of RD and TE671 cells, two in vitro models of embryonal RMS (ERMS), with a synthetic DNMT3B siRNA decreased cell proliferation by arresting cell cycle at G1 phase, as demonstrated by the reduced expression of Cyclin B1, Cyclin D1 and Cyclin E2, and by the concomitant up-regulation of the checkpoint regulators p21 and p27...
October 15, 2016: Oncotarget
Y Zhao, H Zhao, J Y Lin, Y Pan, W J Zhai, Y C Wang
Objective: To analyze the clinical features and pathological classification of chlidren's ocular tumors. Methods: Retrospective case series study. Five hundred and four cases (506 eyes) of ocular tumor with biopsy-proven in children below 14 years old between January 2002 and December 2014 from Tianjin Eye Hospital were performed to retrospectively investigated the lesion location, clinical features and histopathologic classification of these lesions. Results: Of 504 cases there were 246 boys (248 eyes) and 258 girls (258 eyes) patients...
October 11, 2016: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
Anna Sävneby, Johannes Luthman, Fabian Nordenskjöld, Björn Andersson, A Michael Lindberg
The transcriptomes of cells infected with lytic and non-lytic variants of coxsackievirus B2 Ohio-1 (CVB2O) were analyzed using next generation sequencing. This approach was selected with the purpose of elucidating the effects of lytic and non-lytic viruses on host cell transcription. Total RNA was extracted from infected cells and sequenced. The resulting reads were subsequently mapped against the human and CVB2O genomes. The amount of intracellular RNA was measured, indicating lower proportions of human RNA in the cells infected with the lytic virus compared to the non-lytic virus after 48 hours...
2016: PloS One
Maria Böhm, Marco Wachtel, Joana G Marques, Natalie Streiff, Dominik Laubscher, Paolo Nanni, Kamel Mamchaoui, Raffaella Santoro, Beat W Schäfer
A vast number of cancer genes are transcription factors that drive tumorigenesis as oncogenic fusion proteins. Although the direct targeting of transcription factors remains challenging, therapies aimed at oncogenic fusion proteins are attractive as potential treatments for cancer. There is particular interest in targeting the oncogenic PAX3-FOXO1 fusion transcription factor, which induces alveolar rhabdomyosarcoma (aRMS), an aggressive cancer of skeletal muscle cells for which patient outcomes remain dismal...
October 17, 2016: Journal of Clinical Investigation
Petra Balogh, Rita Bánusz, Monika Csóka, Zsófia Váradi, Edit Varga, Zoltán Sápi
BACKGROUND: Rhabdomyosarcoma (RMS) is a malignant tumor of mesenchymal origin and comprises the largest category of soft-tissue sarcomas both in children and adolescents. From a pediatric oncology point of view, RMS has traditionally been classified into alveolar (ARMS) and embryonal (ERMS) subtypes. The anatomical localization of the tumor may vary, but commonly involve the head/neck regions, male and female urogenital tract or the trunk and extremities. CASE PRESENTATION: Here, we report two challenging cases involving 17- and 9-years-olds males where diffuse and multiplex bone lesions suggested either a hematological disease or a primary bone tumor (mesenchymal chondrosarcoma)...
October 18, 2016: Diagnostic Pathology
Maureen O'Sullivan
Since its foundation by remarkably talented and insightful individuals, prominently including Pepper Dehner, pediatric soft tissue tumor pathology has developed at an immense rate. The morphologic classification of tumoral entities has extensively been corroborated, but has also evolved with refinement or realignment of these classifications, through accruing molecular data, with many derivative ancillary diagnostic assays now already well-established. Tumors of unclear histogenesis, classically morphologically undifferentiated, are prominent amongst pediatric sarcomas, however, the classes of undifferentiated round- or spindle-cell-tumors-not-otherwise-specified are being dismantled gradually with the identification of their molecular underpinnings...
September 5, 2016: Seminars in Diagnostic Pathology
Alicia M Waters, Laura L Stafman, Evan F Garner, Smitha Mruthyunjayappa, Jerry E Stewart, Gregory K Friedman, Jennifer M Coleman, James M Markert, G Yancey Gillespie, Elizabeth A Beierle
Rhabdomyosarcoma (RMS), a tumor of skeletal muscle origin, is the most common sarcoma of childhood. Despite multidrug chemotherapy regimens, surgical intervention, and radiation treatment, outcomes remain poor, especially in advanced disease, and novel therapies are needed for the treatment of these aggressive malignancies. Genetically engineered oncolytic viruses, such as herpes simplex virus-1 (HSV), are currently being explored as treatments for pediatric tumors. M002, an oncolytic HSV, has both copies of the γ134...
October 2016: Translational Oncology
Kan Xing Wu, Patchara Phuektes, Pankaj Kumar, Germaine Yen Lin Goh, Dimitri Moreau, Vincent Tak Kwong Chow, Frederic Bard, Justin Jang Hann Chu
Enterovirus 71 (EV71) is a neurotropic enterovirus without antivirals or vaccine, and its host-pathogen interactions remain poorly understood. Here we use a human genome-wide RNAi screen to identify 256 host factors involved in EV71 replication in human rhabdomyosarcoma cells. Enrichment analyses reveal overrepresentation in processes like mitotic cell cycle and transcriptional regulation. We have carried out orthogonal experiments to characterize the roles of selected factors involved in cell cycle regulation and endoplasmatic reticulum-associated degradation...
October 17, 2016: Nature Communications
A B Sudeep, Y K Gurav, V P Bondre
Chandipura virus (CHPV) (Vesiculovirus: Rhabdoviridae) garnered global attention as an emerging neurotropic pathogen inflicting high mortality in children within 24 h of commencement of symptoms. The 2003-2004 outbreaks in Central India witnessed case fatality rates ranging from 56-75 per cent in Andhra Pradesh and Gujarat with typical encephalitic symptoms. Due to the acute sickness and rapid deterioration, the precise mechanism of action of the virus is still unknown. Recent studies have shown increased expression of CHPV phosphoprotein upto 6 h post infection (PI) demonstrating CHPV replication in neuronal cells and the rapid destruction of the cells by apoptosis shed light on the probable mechanism of rapid death in children...
June 2016: Indian Journal of Medical Research
Surbhi Goyal, Kiran Mishra, Urvee Sarkar, Satendra Sharma, Anita Kumari
BACKGROUND & OBJECTIVES: Renal tumours constitute about 7 per cent of all neoplasms in children. It is important to differentiate Wilms' tumour (commonest tumour) from non-Wilms' tumours. The aim of this study was to evaluate the immunoexpression and diagnostic role of Wilms' tumour-1 protein (WT1) in paediatric renal tumours. METHODS: A total of 53 cases of renal tumours in children (below 18 yr) who underwent total nephrectomy were included in this retrospective study...
May 2016: Indian Journal of Medical Research
Mark McInturff, Anne Adamson, Chadwick Donaldson, Brenda L Nelson
A 19 year old female presents to the emergency room with right facial enlargement. Clinical examination revealed a soft tissue mass of the right buccal mucosa. Treated initially as infection, the patient later turned to clinic with now rapidly enlarging and intermittently painful mass. Computed tomography with contrast showed a low attenuated buccal mass with mild enhancement lateral to the right caudal maxilla and superior mandible. Biopsy was performed and microscopic examination showed cells with moderate pleomorphism with numerous atypical mitotic figures and occasional elongated "strap" cells with eccentric nuclei...
October 14, 2016: Head and Neck Pathology
Tamara Z Vern-Gross, Daniel J Indelicato, Julie A Bradley, Ronny L Rotondo
PURPOSE: To report on the patterns of failure in children with rhabdomyosarcoma treated with proton therapy. PATIENTS AND METHODS: Between February 2007 and November 2013, 66 children with a median age of 4.1 years (range, 0.6-15.3 years) diagnosed with nonmetastatic rhabdomyosarcoma were treated with proton therapy. Clinical target volume 1 was defined as the prechemotherapy tumor plus a 1-cm anatomically constrained margin. Clinical target volume 2 was defined as the postchemotherapy tumor (or tumor bed) plus a 0...
August 30, 2016: International Journal of Radiation Oncology, Biology, Physics
Sha Lou, Arjen H G Cleven, Benjamin Balluff, Marieke de Graaff, Marie Kostine, Inge Briaire-de Bruijn, Liam A McDonnell, Judith V M G Bovée
BACKGROUND: Previous studies on high grade sarcomas using mass spectrometry imaging showed proteasome activator complex subunit 1 (PSME1) to be associated with poor survival in soft tissue sarcoma patients. PSME1 is involved in immunoproteasome assembly for generating tumor antigens presented by MHC class I molecules. In this study, we aimed to validate PSME1 as a prognostic biomarker in an independent and larger series of soft tissue sarcomas by immunohistochemistry. METHODS: Tissue microarrays containing leiomyosarcomas (n = 34), myxofibrosarcomas (n = 14), undifferentiated pleomorphic sarcomas (n = 15), undifferentiated spindle cell sarcomas (n = 4), pleomorphic liposarcomas (n = 4), pleomorphic rhabdomyosarcomas (n = 2), and uterine leiomyomas (n = 7) were analyzed for protein expression of PSME1 using immunohistochemistry...
2016: Clinical Sarcoma Research
Sila Datta, Jay Gopal Ray, Tushar Deb, Santanu Patsa
Rhabdomyosarcoma is the malignant neoplasm of striated muscle and a relatively uncommon tumor of the oral cavity. Embryonal variety is the most common subtype, observed in children below 10 years of age but occasionally seen in adolescents and young adults. The present report describes a case of embryonal rhabdomyosarcoma in the left posterior buccal mucosa, with extension in the adjacent alveolus, soft palate, oropharynx and nasopharynx of a 17-year-old female.
September 2016: Journal of Oral and Maxillofacial Pathology: JOMFP
Jason A Jarzembowski
Dr. Louis "Pepper" Dehner is an internationally renowned surgical pathologist, especially in the subspecialty of pediatric pathology. Although his clinical and academic expertise are broad, with over 400 published articles, some of his most intriguing contributions have been in the area of pediatric renal and genitourinary pathology. This review focuses on the entities in these following organ systems where he has focused his efforts: malignant rhabdoid tumor, renal medullary carcinoma, Ewing sarcoma/peripheral neuroectodermal tumor, and the DICER1-related lesions cystic nephroma, embryonal rhabdomyosarcoma of the uterine cervix, and Sertoli-Leydig cell tumor...
August 31, 2016: Seminars in Diagnostic Pathology
Maryam Sadat Hosseini, Tahereh Ashrafganjoei, Ainaz Sourati, Morteza Tabatabeifar, Mahdiss Mohamadianamiri
INTRODUCTION: Rhabdomyosarcoma has known as a highly malignant soft tissue sarcoma. It has been the most common soft tissue sarcoma in childhood, accounting for about 3 to 4 % of all cases of childhood cancer. Rhabdomyosarcoma was rare in adults, accounting for 3% of all soft-tissue sarcomas. embryonal rhabdomyosarcoma of female genital tract including uterine cervix in an adult was rare. CASE PRESENTATION: This study has reported a 33-year-old woman presented with abnormal vaginal discharge...
June 2016: Iranian Journal of Cancer Prevention
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