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Brain tumors in children

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https://www.readbyqxmd.com/read/28108836/smad-dependent-signaling-plays-a-detrimental-role-in-a-fly-model-of-smarcb1-deficiency-and-the-biology-of-atypical-teratoid-rhabdoid-tumors
#1
Astrid Jeibmann, Jacqueline Schulz, Kristin Eikmeier, Pascal D Johann, Katharina Thiel, Isabel Tegeder, Oliver Ambrée, Michael C Frühwald, Stefan M Pfister, Marcel Kool, Werner Paulus, Martin Hasselblatt
Atypical teratoid/rhabdoid tumors (ATRT) are highly malignant brain tumors arising in young children. The majority of ATRT is characterized by inactivation of the chromatin remodeling complex member SMARCB1 (INI1/hSNF5). Little is known, however, on downstream pathways involved in the detrimental effects of SMARCB1 deficiency which might also represent targets for treatment. Using Drosophila melanogaster and the Gal4-UAS system, modifier screens were performed in order to identify the role of SMAD dependent signaling in the lethal phenotype associated with knockdown of snr1, the fly homolog of SMARCB1...
January 20, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28101166/hsp70-inducer-17-allylamino-demethoxygeldanamycin-provides-neuroprotection-via-anti-inflammatory-effects-in-a-rat-model-of-traumatic-brain-injury
#2
Youquan Gu, Jun Chen, Tianhong Wang, Chaoning Zhou, Zhaodong Liu, Lanhua Ma
Traumatic brain injury (TBI) is the predominant cause of mortality in young adults and children living in China. TBI induces inflammatory responses; in addition, tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and IL-6 are important pro-inflammatory cytokines. Considering the observation that Hsp-70 overexpression can exert neuroprotection, identifying a drug that is able to induce the upregulation of Hsp70 has the potential to be a promising therapy for the treatment of neurological diseases. Thus, the present study assessed the clinical effectiveness of an anticancer drug and Hsp70 activator, 17-allylamino-demethoxygeldanamycin (17-AAG), to evaluate its potential as a treatment for patients with TBI...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28100321/-application-of-esmolol-in-severe-hand-foot-and-mouth-disease
#3
Lei Zhu, Bo-Xiang Qi, Dai-Hua Fang, Gong-Jian Qi, Kun Gao, Bao-Li Hu
OBJECTIVE: To study the clinical effect and mechanism of action of esmolol in the treatment of severe hand, foot, and mouth disease (HFMD). METHODS: A prospective randomized controlled trial was performed. A total of 102 children with severe HFMD were enrolled in the study and were randomly divided into conventional treatment and esmolol treatment groups (n=51 each). The children in the conventional treatment group were given conventional treatment according to the guidelines for the diagnosis and treatment of HFMD...
January 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28100291/systematic-review-of-neuropsychological-rehabilitation-for-prospective-memory-deficits-as-a-consequence-of-acquired-brain-injury
#4
Steven Mahan, Rebecca Rous, Anna Adlam
OBJECTIVES: Prospective memory (PM) impairments are common following acquired brain injury (ABI). PM is the ability to keep a goal in mind for future action and interventions have the potential to increase independence. This review aimed to evaluate studies examining PM rehabilitation approaches in adults and children with ABI. METHODS: Relevant literature was identified using PsycARTICLES (1894 to present), PsycINFO (1880 to present), the Cochrane Library (1972 to present), MEDLINE PubMed, reference lists from relevant journal articles, and searches of key journals...
January 19, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28099397/the-effects-of-attention-problems-on-psychosocial-functioning-in-childhood-brain-tumor-survivors-a-2-year-postcraniospinal-irradiation-follow-up
#5
Yunhye Oh, Hyunjung Seo, Ki Woong Sung, Yoo Sook Joung
OBJECTIVE: To examine the psychosocial outcomes and impact of attention problems in survivors of pediatric brain tumor. STUDY DESIGN: The survivors' cognitive functioning was measured using the Wechsler Intelligence Scale for Children. The Child Behavior Checklist-Attention Problems scale was used to screen for attention problems, and participants were classified as having attention problems (n=15) or normal attention (n=36). Psychosocial functioning was examined with the Korean Personality Rating scale for Children (K-PRC) at precraniospinal radiation and at 2-year follow-up...
January 17, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28096729/advanced-mri-for-pediatric-brain-tumors-with-emphasis-on-clinical-benefits
#6
REVIEW
Hyun Woo Goo, Young-Shin Ra
Conventional anatomic brain MRI is often limited in evaluating pediatric brain tumors, the most common solid tumors and a leading cause of death in children. Advanced brain MRI techniques have great potential to improve diagnostic performance in children with brain tumors and overcome diagnostic pitfalls resulting from diverse tumor pathologies as well as nonspecific or overlapped imaging findings. Advanced MRI techniques used for evaluating pediatric brain tumors include diffusion-weighted imaging, diffusion tensor imaging, functional MRI, perfusion imaging, spectroscopy, susceptibility-weighted imaging, and chemical exchange saturation transfer imaging...
January 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28094022/a-case-report-of-an-adolescent-with-cluster-headaches-following-neck-trauma-coincidence-or-trigger
#7
Agnieszka Biedroń, Marek Kaciński, Małgorzata Steczkowska, Anna Świerczyńska
Posttraumatic headaches usually have tension-type or migraine-like characteristics. A correlation between head trauma and cluster headaches (CH) has been previously reported. CH in children are rare and require thorough differential diagnosis. We present an original case of a 15-year-old boy with cluster headaches associated with allodynia probably evoked by a neck trauma. Severe headache attacks started one month after neck trauma. At the beginning clinical presentation of our patient's headaches was very misleading...
January 10, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28078450/genome-wide-methylation-profiles-in-primary-intracranial-germ-cell-tumors-indicate-a-primordial-germ-cell-origin-for-germinomas
#8
Shintaro Fukushima, Satoshi Yamashita, Hisato Kobayashi, Hirokazu Takami, Kohei Fukuoka, Taishi Nakamura, Kai Yamasaki, Yuko Matsushita, Hiromi Nakamura, Yasushi Totoki, Mamoru Kato, Tomonari Suzuki, Kazuhiko Mishima, Takaaki Yanagisawa, Akitake Mukasa, Nobuhito Saito, Masayuki Kanamori, Toshihiro Kumabe, Teiji Tominaga, Motoo Nagane, Toshihiko Iuchi, Koji Yoshimoto, Masahiro Mizoguchi, Kaoru Tamura, Keiichi Sakai, Kazuhiko Sugiyama, Mitsutoshi Nakada, Kiyotaka Yokogami, Hideo Takeshima, Yonehiro Kanemura, Masahide Matsuda, Akira Matsumura, Kazuhiko Kurozumi, Keisuke Ueki, Masahiro Nonaka, Akio Asai, Nobutaka Kawahara, Yuichi Hirose, Tatusya Takayama, Yoichi Nakazato, Yoshitaka Narita, Tatsuhiro Shibata, Masao Matsutani, Toshikazu Ushijima, Ryo Nishikawa, Koichi Ichimura
Intracranial germ cell tumors (iGCTs) are the second most common brain tumors among children under 14 in Japan. The World Health Organization classification recognizes several subtypes of iGCTs, which are conventionally subclassified into pure germinoma or non-germinomatous GCTs. Recent exhaustive genomic studies showed that mutations of the genes involved in the MAPK and/or PI3K pathways are common in iGCTs; however, the mechanisms of how different subtypes develop, often as a mixed-GCT, are unknown. To elucidate the pathogenesis of iGCTs, we investigated 61 GCTs of various subtypes by genome-wide DNA methylation profiling...
January 11, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28052119/pre-clinical-study-of-panobinostat-in-xenograft-and-genetically-engineered-murine-diffuse-intrinsic-pontine-glioma-models
#9
Tammy Hennika, Guo Hu, Nagore G Olaciregui, Kelly L Barton, Anahid Ehteda, Arjanna Chitranjan, Cecilia Chang, Andrew J Gifford, Maria Tsoli, David S Ziegler, Angel M Carcaboso, Oren J Becher
BACKGROUND: Diffuse intrinsic pontine glioma (DIPG), or high-grade brainstem glioma (BSG), is one of the major causes of brain tumor-related deaths in children. Its prognosis has remained poor despite numerous efforts to improve survival. Panobinostat, a histone deacetylase inhibitor, is a targeted agent that has recently shown pre-clinical efficacy and entered a phase I clinical trial for the treatment of children with recurrent or progressive DIPG. METHODS: A collaborative pre-clinical study was conducted using both a genetic BSG mouse model driven by PDGF-B signaling, p53 loss, and ectopic H3...
2017: PloS One
https://www.readbyqxmd.com/read/28043238/recurrent-ataxia-in-children-and-adolescents
#10
Michael S Salman, Samantha F Klassen, Janine L Johnston
BACKGROUND: Recurrent ataxia is encountered infrequently in clinical pediatric neurology practise and presents with diagnostic challenges. It is caused by several disorders. Our aims were to describe the epidemiology and clinical features in children with recurrent ataxia. MATERIALS AND METHODS: A retrospective review was undertaken in 185 children with chronic ataxia, who presented during 1991 to 2008. Several databases were searched to ensure optimum ascertainment...
January 3, 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/28039365/complete-prevalence-of-malignant-primary-brain-tumors-registry-data-in-the-united-states-compared-with-other-common-cancers-2010
#11
Adah S Zhang, Quinn T Ostrom, Carol Kruchko, Lisa Rogers, David M Peereboom, Jill S Barnholtz-Sloan
BACKGROUND: Complete prevalence proportions illustrate the burden of disease in a population. This study estimates the 2010 complete prevalence of malignant primary brain tumors overall and by Central Brain Tumor Registry of the United States (CBTRUS) histology groups, and compares the brain tumor prevalence estimates to the complete prevalence of other common cancers as determined by the Surveillance, Epidemiology, and End Results Program (SEER) by age at prevalence (2010): children (0-14 y), adolescent and young adult (AYA) (15-39 y), and adult (40+ y)...
December 29, 2016: Neuro-oncology
https://www.readbyqxmd.com/read/28017579/seizures-caused-by-brain-tumors-in-children
#12
Iván Sánchez Fernández, Tobias Loddenkemper
PURPOSE: To review the epidemiology, clinical features, and treatment of seizures secondary to pediatric brain tumors. METHOD: Literature review. RESULTS: Pediatric brain tumors are the most common solid pediatric tumor and the most common cause of death in pediatric cancer. Seizures are one of the most common symptoms of pediatric brain tumors. Factors associated with increased risk of seizures include supratentorial location, gray matter involvement, low-grade, and certain histological features-especially dysembryoplastic neuroepithelial tumor, ganglioglioma, and oligodendroglioma...
December 7, 2016: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28011926/evaluation-of-age-dependent-treatment-strategies-for-children-and-young-adults-with-pineoblastoma-analysis-of-pooled-european-society-for-paediatric-oncology-siop-e-and-us-head-start-data
#13
Martin Mynarek, Barry Pizer, Christelle Dufour, Dannis van Vuurden, Miklos Garami, Maura Massimino, Jason Fangusaro, Tom Davidson, Maria Joao Gil-da-Costa, Jaroslav Sterba, Martin Benesch, Nicolas Gerber, B Ole Juhnke, Robert Kwiecien, Torsten Pietsch, Marcel Kool, Steve Clifford, David W Ellison, Felice Giangaspero, Pieter Wesseling, Floyd Gilles, Nicholas Gottardo, Jonathan L Finlay, Stefan Rutkowski, Katja von Hoff
BACKGROUND: Pineoblastoma is a rare pineal region brain tumor. Treatment strategies have reflected those for other malignant embryonal brain tumors. PATIENTS AND METHODS: Original prospective treatment and outcome data from international trial groups were pooled. Cox regression models were developed considering treatment elements as time-dependent covariates. RESULTS: Data on 135 patients with pineoblastoma aged 0.01-20.7 (median 4.9) years were analyzed...
December 23, 2016: Neuro-oncology
https://www.readbyqxmd.com/read/28009226/report-of-effective-trametinib-therapy-in-2-children-with-progressive-hypothalamic-optic-pathway-pilocytic-astrocytoma-documentation-of-volumetric-response
#14
Catherine Miller, Daniel Guillaume, Kathryn Dusenbery, H Brent Clark, Christopher Moertel
Brain tumors are the most common solid tumor in childhood, and astrocytomas account for the largest proportion of these tumors. Increasing sophistication in genetic testing has allowed for the detection of specific mutations within tumor subtypes that may represent targets for individualized tumor treatment. The mitogen-activating protein kinase (MAPK) pathway and, more specifically, BRAF mutations have been shown to be prevalent in pediatric pilocytic astrocytomas and may represent one such area to target...
December 23, 2016: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28005045/-treatment-of-epilepsy-in-children-with-brain-tumors
#15
A A Kholin, V S Khalilov, I G Vasil'ev, E S Il'ina, N N Zavadenko
AIM: Symptomatic focal epilepsy is frequently caused by supratentorial brain tumors that may be surgically removed. The authors studied outcomes of surgical treatment depending on the use of electrocorticography c (ECoG). MATERIAL AND METHODS: Seventy-five children, aged 5-7 years, with supratentorial brain tumors were examined. Symptomatic epilepsy was found in 52 (69.3%) patients. Dysembryoplastic neuroepithelial tumors (DNET) and fibrillary astrocytomas were the most epileptogenic tumors...
2016: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/27997032/k27m-midline-gliomas-display-malignant-progression-by-imaging-and-histology
#16
Franziska J Vettermann, Julia E Neumann, Bogdana Suchorska, Peter Bartenstein, Armin Giese, Mario M Dorostkar, Nathalie L Albert, Ulrich Schüller
K27M midline gliomas are diffuse gliomas that usually occur in children and young adults and arise in midline structures of the brain, the brain stem and the spinal cord. They are defined by point mutations within the chromatin modifiers H3 and are usually associated with a bad clinical outcome [1,2,3]. As such, they are represented as a new separate entity in the new version of the WHO classification for tumors of the central nervous system. Interestingly, these tumors display a huge histological variability [4] and diagnoses currently range from low grade astrocytoma (WHO-grade II) to glioblastoma (WHO-grade IV)...
December 20, 2016: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/27992000/refractory-epilepsy-in-children-with-brain-tumors-the-urgency-of-neurosurgery
#17
Marília Rosa Abtibol Bernardino, Carolina Funayama, Ana Paula Andrade Hamad, Hélio Machado, Américo Sakamoto, Ursula Thome, Vera Cristina Terra, Antonio Carlos Dos Santos
In order to verify indications for surgery, 27 patients with refractory epileptic seizures and brain tumor, aged up to 19 years at the time of surgery, were studied between 1996 and 2013 and followed up for at least one year. The mean interval between the onset of seizures and the diagnosis of the tumor was 3.6 years, and from diagnosis to the surgery, 18 months. The location of the tumor was in the temporal lobe in 16, with ganglioglioma and dysembryoplastic neuroepithelial tumors being the most frequent. Among the patients, 92...
December 2016: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/27989218/the-safety-of-available-immunotherapy-for-the-treatment-of-glioblastoma
#18
S Harrison Farber, Aladine A Elsamadicy, Ahmet Fatih Atik, Carter M Suryadevara, Pakawat Chongsathidkiet, Peter E Fecci, John H Sampson
Glioblastoma (GBM) is the most common malignant primary brain tumor in adults. Current standard of care involves maximal surgical resection combined with adjuvant chemoradiation. Growing support exists for a role of immunotherapy in treating these tumors with the goal of targeted cytotoxicity. Here we review data on the safety for current immunotherapies being tested in GBM. Areas covered: Safety data from published clinical trials, including ongoing clinical trials were reviewed. Immunotherapeutic classes currently under investigation in GBM include various vaccination strategies, adoptive T cell immunotherapy, immune checkpoint blockade, monoclonal antibodies, and cytokine therapies...
January 3, 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/27984470/constraint-induced-movement-therapy-for-children-with-brain-tumors
#19
Jessica Sparrow, Liang Zhu, Amar Gajjar, Belinda N Mandrell, Kirsten K Ness
PURPOSE: The purpose of this pilot study was to investigate the feasibility of a 3-week constraint-induced movement therapy program in children with brain tumors and upper extremity hemiplegia and to describe resultant change in extremity use. METHODS: Affected arm use, health-related quality of life, and parent-reported feasibility of program participation were measured before and after the intervention and at a 3-month follow-up visit. RESULTS: All 9 participants completed the entire study...
January 2017: Pediatric Physical Therapy
https://www.readbyqxmd.com/read/27978785/the-five-pediatric-cancers-update-on-genetic-implications
#20
Stacy Cooper, Jeffrey Rubens, Joann Bodurtha
Pediatric cancer has undergone significant improvements in survival over the past several decades, in part due to a better understanding of the underlying genetic aberrations of each oncologic diagnosis, which has allowed for more effective targeted therapies. Pediatric brain tumors, leukemia, lymphoma, Wilms tumor, and retinoblastoma are exemplary pediatric cancers that each have specific epidemiology regarding children at risk as well as characteristic associated genetic lesions. These genetic features are more commonly being used to provide risk stratification, as well as to identify novel pathways for targeted therapy...
December 13, 2016: Current Pediatric Reviews
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