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https://www.readbyqxmd.com/read/28917252/stereotactic-radiosurgery-of-the-brain-a-review-of-common-indications
#1
Philip Gilbo, Isabella Zhang, Jonathan Knisely
Over the past half-century since Lars Leksell first utilized radiation to address deep and difficult to treat lesions of the central nervous system (CNS), intracranial stereotactic radiosurgery (SRS) has become an increasingly valued tool in the hands of neurosurgeons and radiation oncologists. Following developments in medical imaging and radiation technology, radiosurgery has evolved from its first application in movement disorders to widespread use for a varied range of malignant and benign conditions. SRS remains a powerful, minimally invasive instrument that offers additional options for intervention to a diverse patient population...
September 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28911239/controlled-release-of-liposome-encapsulated-temozolomide-for-brain-tumor-treatment-by-convection-enhanced-delivery
#2
Chung-Yin Lin, Rui-Jin Li, Chiung-Yin Huang, Kuo-Chen Wei, Pin-Yuan Chen
Convection-enhanced delivery (CED) is a promising technique for the delivery of drugs directly into the central nervous system (CNS) and, more specifically, the brain. CED can increase drug concentration within a brain tumor, thereby improving the therapeutic efficacy and limiting the systemic toxicity of tumoricidal agents. In this study, we evaluated a drug-liposome construct in vitro and in vivo using U87 tumor-bearing nude mice. Dipalmitoylphosphatidylcholine (DPPC)-based liposomes were designed to deliver a lipophilic temozolomide (TMZ) formulation (LipoTMZ)...
September 15, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28901970/the-2016-who-classification-of-central-nervous-system-tumors-what-neurologists-need-to-know
#3
John C DeWitt, Andreas Mock, David N Louis
PURPOSE OF REVIEW: The 2016 WHO classification of tumors of the central nervous system (2016 CNS WHO) features many changes that are relevant to neurologists treating patients with brain tumors as well as neurologists involved in basic, clinical, and epidemiological research. This review summarizes what neurologists need to know and will need to know in the next years. RECENT FINDINGS: The 2016 CNS WHO introduces diagnostic terms that 'integrate' histological and molecular information and suggests presenting diagnoses in a four-layered reporting format...
September 9, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28892058/glia-specific-enhancers-and-chromatin-structure-regulate-nfia-expression-and-glioma-tumorigenesis
#4
Stacey M Glasgow, Jeffrey C Carlson, Wenyi Zhu, Lesley S Chaboub, Peng Kang, Hyun Kyoung Lee, Yoanne M Clovis, Brittney E Lozzi, Robert J McEvilly, Michael G Rosenfeld, Chad J Creighton, Soo-Kyung Lee, Carrie A Mohila, Benjamin Deneen
Long-range enhancer interactions critically regulate gene expression, yet little is known about how their coordinated activities contribute to CNS development or how this may, in turn, relate to disease states. By examining the regulation of the transcription factor NFIA in the developing spinal cord, we identified long-range enhancers that recapitulate NFIA expression across glial and neuronal lineages in vivo. Complementary genetic studies found that Sox9-Brn2 and Isl1-Lhx3 regulate enhancer activity and NFIA expression in glial and neuronal populations...
September 11, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28869943/targeting-the-potassium-channel-kv1-3-kills-glioblastoma-cells
#5
Elisa Venturini, Luigi Leanza, Michele Azzolini, Stephanie Kadow, Andrea Mattarei, Michael Weller, Ghazaleh Tabatabai, Michael J Edwards, Mario Zoratti, Cristina Paradisi, Ildikò Szabò, Erich Gulbins, Katrin Anne Becker
BACKGROUND/AIMS: Glioblastoma (GBM) is one of the most aggressive cancers, counting for a high number of the newly diagnosed patients with central nervous system (CNS) cancers in the United States and Europe. Major features of GBM include aggressive and invasive growth as well as a high resistance to treatment. Kv1.3, a potassium channel of the shaker family, is expressed in the inner mitochondrial membrane of many cancer cells. Inhibition of mitochondrial Kv1.3 was shown to induce apoptosis in several tumor cells at doses that were not lethal for normal cells...
September 1, 2017: Neuro-Signals
https://www.readbyqxmd.com/read/28865921/in-vivo-assessment-of-tumor-heterogeneity-in-who-2016-glioma-grades-using-diffusion-kurtosis-imaging-diagnostic-performance-and-improvement-of-feasibility-in-routine-clinical-practice
#6
J-M Hempel, J Schittenhelm, S Bisdas, C Brendle, B Bender, G Bier, M Skardelly, G Tabatabai, S Castaneda Vega, U Ernemann, U Klose
PURPOSE: To assess the diagnostic performance of normalized and non-normalized diffusion kurtosis imaging (DKI) metrics extracted from different tumor volume data for grading glioma according to the integrated approach of the revised 2016 WHO classification. MATERIALS AND METHODS: Sixty patients with histopathologically confirmed glioma, who provided written informed consent, were retrospectively assessed between 01/2013 and 08/2016 from a prospective trial approved by the local institutional review board...
September 1, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28845038/treatment-recommendations-for-adult-patients-with-diffuse-gliomas-of-grades-ii-and-iii-according-to-the-new-who-classification-in-2016
#7
Hikaru Sasaki, Kazunari Yoshida
With advanced understanding of molecular background and correlation with therapeutic outcomes, the revised 4th edition of World Health Organization (WHO) classification of central nervous system (CNS) tumors incorporated molecular information into the definition of diffuse gliomas. Indeed, oligodendroglioma and astrocytoma are now defined by molecular signature, with diagnosis of glioblastoma being made by histology. In parallel, numerous clinical trials are underway all over the world, and important findings are being produced every year that have an impact on patient outcomes...
August 25, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28841798/re-irradiation-for-recurrent-glioblastoma-multiforme
#8
Christian Barney, Gaurav Shukla, Deepak Bhamidipati, Joshua D Palmer
As our understanding of normal brain tissue tolerance and radiation technology have improved, central nervous system (CNS) re-irradiation has garnered more attention; whereas, in the past there had been hesitancy due to late toxicity concerns, particularly radionecrosis (RN). There is minimal prospective data evaluating repeat radiation in recurrent gliomas. In this review, the rationale for and different approaches to re-irradiation will be discussed, and the biology and clinical impact of late CNS toxicity will be reviewed...
August 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28815663/who-2016-classification-of-gliomas
#9
Pieter Wesseling, David Capper
Gliomas are the most frequent intrinsic tumours of the central nervous system and encompass two principle subgroups: diffuse gliomas and gliomas showing a more circumscribed growth pattern ('non-diffuse gliomas'). In the revised 4th edition of the WHO Classification of CNS tumors published in 2016, classification of especially diffuse gliomas has fundamentally changed: for the first time a large subset of these tumours is now defined based on presence/absence of IDH mutation and 1p/19q codeletion. Following this approach, the diagnosis of (anaplastic) oligoastrocytoma can be expected to largely disappear...
August 16, 2017: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/28802171/parental-occupational-exposure-to-benzene-and-the-risk-of-childhood-cancer-a-census-based-cohort-study
#10
Ben Daniel Spycher, Judith Eva Lupatsch, Anke Huss, Johannes Rischewski, Christina Schindera, Adrian Spoerri, Roel Vermeulen, Claudia Elisabeth Kuehni
BACKGROUND: Previous studies on occupational exposures in parents and cancer risks in their children support a link between solvents and paints with childhood leukaemia. Few studies have focused specifically on benzene. OBJECTIVES: To examine whether parental occupational exposure to benzene is associated with an increased cancer risk in a census-based cohort of children. METHODS: From a census-based cohort study in Switzerland, we included children aged <16years at national censuses (1990, 2000)...
August 9, 2017: Environment International
https://www.readbyqxmd.com/read/28795843/intraoperative-imaging-techniques-for-glioma-surgery
#11
Tomas Garzon-Muvdi, Carmen Kut, Xingde Li, Kaisorn L Chaichana
Gliomas are CNS neoplasms that infiltrate the surrounding brain parenchyma, complicating their treatment. Tools that increase extent of resection while preventing neurological deficit are essential to improve prognosis of patients diagnosed with gliomas. Tools such as intraoperative MRI, ultrasound and fluorescence-guided microsurgery have been used in the surgical resection of CNS gliomas with the goal of maximizing extent of resection to improve patient outcomes. In addition, emerging experimental techniques, for example, optical coherence tomography and Raman spectroscopy are promising techniques which could 1 day add to the increasing armamentarium used in the surgical resection of CNS gliomas...
August 2017: Future Oncology
https://www.readbyqxmd.com/read/28795278/frozen-tissue-preparation-for-high-resolution-multiplex-histological-analyses-of-human-brain-specimens
#12
Fangjie Shao, Wenhong Jiang, Qingqing Gao, Baizhou Li, Chongran Sun, Qiyuan Wang, Qin Chen, Bing Sun, Hong Shen, Keqing Zhu, Jianmin Zhang, Chong Liu
The availability of a comprehensive tissue library is essential for elucidating the function and pathology of human brains. Considering the irreplaceable status of the formalin-fixation-paraffin-embedding (FFPE) preparation in routine pathology and the advantage of ultra-low temperature to preserve nucleic acids and proteins for multi-omics studies, these methods have become major modalities for the construction of brain tissue libraries. Nevertheless, the use of FFPE and snap-frozen samples is limited in high-resolution histological analyses because the preparation destroys tissue integrity and/or many important cellular markers...
August 9, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28791500/correlation-of-volumetric-growth-and-histological-grade-in-50-meningiomas
#13
Wai Cheong Soon, Daniel M Fountain, Kacper Koczyk, Mutwakil Abdulla, Sachin Giri, Kieren Allinson, Tomasz Matys, Mathew R Guilfoyle, Ramez W Kirollos, Thomas Santarius
INTRODUCTION: Advances in radiological imaging techniques have enabled volumetric measurements of meningiomas to be easily monitored using serial imaging scans. There is limited literature on the relationship between tumour growth rates and the WHO classification of meningiomas despite tumour growth being a major determinant of type and timing of intervention. Volumetric growth has been successfully used to assess growth of low-grade glioma; however, there is limited information on the volumetric growth rate (VGR) of meningiomas...
August 9, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28756607/a-randomized-open-label-two-way-crossover-single-dose-bioequivalence-study-of-temozolomide-200%C3%A2-mg-m-2-dralitem-%C3%A2-vs-temodal-%C3%A2-capsules-in-patients-with-primary-tumors-of-the-central-nervous-system-under-fasting-conditions
#14
Alejandro Muggeri, Miguel Vago, Sebastián Pérez, Marcelo Rubio, Cecilia González, Cristian Magariños, Mónica Rosenberg, Fernando Costa, Santiago Pérez-Lloret
BACKGROUND: Temozolomide is an antineoplastic agent of proven efficacy against high-grade gliomas. PURPOSE: The objective of this crossover, single-dose, bioequivalence study was to compare the rate and extent of absorption of oral temozolomide after administration of the study product (Dralitem(®), Monte Verde Sociedad Anónima) and the reference product (Temodal(®), originator product manufactured by Schering Plough Laboratories) in patients with primary central nervous system (CNS) tumors under fasting conditions...
July 29, 2017: Drugs in R&D
https://www.readbyqxmd.com/read/28730141/extracellular-vesicles-as-modulators-of-tumor-microenvironment-and-disease-progression-in-glioma
#15
REVIEW
Abir Mondal, Divya Kumari Singh, Suchismita Panda, Anjali Shiras
Diffuse gliomas are lethal tumors of the central nervous system (CNS) characterized by infiltrative growth, aggressive nature, and therapeutic resistance. The recent 2016 WHO classification for CNS tumors categorizes diffuse glioma into two major types that include IDH wild-type glioblastoma, which is the predominant type and IDH-mutant glioblastoma, which is less common and displays better prognosis. Recent studies suggest presence of a distinct cell population with stem cell features termed as glioma stem cells (GSCs) to be causal in driving tumor growth in glioblastoma...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28718326/cns-anticancer-drug-discovery-and-development-2016-conference-insights
#16
Victor A Levin, Lauren E Abrey, Timothy P Heffron, Peter J Tonge, Arvin C Dar, William A Weiss, James M Gallo
CNS Anticancer Drug Discovery and Development November 2016, AZ, USA The 2016 second CNS Anticancer Drug Discovery and Development Conference addressed diverse viewpoints about why new drug discovery/development focused on CNS cancers has been sorely lacking. Despite more than 70,000 individuals in the USA being diagnosed with a primary brain malignancy and 151,669-286,486 suffering from metastatic CNS cancer, in 1999, temozolomide was the last drug approved by the US FDA as an anticancer agent for high-grade gliomas...
July 18, 2017: CNS Oncology
https://www.readbyqxmd.com/read/28711535/infection-or-glioma-the-false-dilemma-of-primary-central-nervous-system-histiocytic-sarcoma
#17
William Clifton, Oluwaseun Akinduro, Sebastian Lopez-Chiriboga, Dale Alan Whitaker, Ronald Reimer
BACKGROUND: Primary central nervous system (CNS) histiocytic sarcoma is an extremely rare lymphoproliferative disorder that affects the CNS and behaves aggressively. Only 27 cases of primary CNS histiocytic sarcoma have been reported. The paucity of literature on this entity has made diagnosis and treatment difficult both for the surgeon and the pathologist. CASE DESCRIPTION: In this case of primary CNS histiocytic sarcoma, a middle-aged woman presented from an outside institution with a supposed cerebellar abscess...
July 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28711295/prognostic-indicators-of-adult-medullary-gliomas-after-microsurgical-treatment-a-retrospective-analysis-of-54-patients
#18
Yi-Song Zhang, Chang-Cun Pan, Peng Zhang, Bin Dai, Jie Tang, Zhen Wu, Jun-Ting Zhang, Li-Wei Zhang
Due to the low incidence of medullary gliomas, the special location, and the function of the gliomas in the medulla oblongata, microsurgical treatment is still challenging for neurosurgeons. The aim of this study was to observe the effect of microsurgical treatment of adult medullary gliomas and to explore the prognostic factors after treatment. The clinical data from 54 patients with adult medullary gliomas who received microsurgical treatment at Beijing Tiantan Hospital (China) from April 2008 to April 2014 was retrospectively analyzed...
October 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28707070/functional-role-of-matrix-gla-protein-in-glioma-cell-migration
#19
Mu-Hui Fu, Chih-Yen Wang, Yun-Ti Hsieh, Kuan-Min Fang, Shun-Fen Tzeng
Glioblastoma multiforme (GBM) is the most common and aggressive brain tumor subtype. Despite that metastasis of GBM beyond the central nervous system (CNS) is rare, its malignancy is attributed to the highly infiltration trait, leading to the difficulty of complete surgical excision. Matrix gla protein (MGP) is a vitamin K-dependent small secretory protein, and functions as a calcification inhibitor. The involvement of MGP function in glioma cell dynamics remains to be clarified. The study showed that a low proliferative rat C6 glioma cell line named as C6-2 exhibited faster migratory and invasive capability compared to that observed in a high tumorigenic rat C6 glioma cell line (called as C6-1)...
July 13, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28702832/effect-of-perfusion-on-diffusion-kurtosis-imaging-estimates-for-in-vivo-assessment-of-integrated-2016-who-glioma-grades-a%C3%A2-cross-sectional-observational-study
#20
Johann-Martin Hempel, Jens Schittenhelm, Cornelia Brendle, Benjamin Bender, Georg Bier, Marco Skardelly, Ghazaleh Tabatabai, Salvador Castaneda Vega, Ulrike Ernemann, Uwe Klose
PURPOSE: To assess the role of perfusion-related signal decay on diffusion kurtosis imaging (DKI) estimates for in vivo stratification of glioma according to the integrated approach of the 2016 World Health Organization classification of tumors of the central nervous system (2016 CNS WHO). METHODS: In this study 77 patients with histopathologically confirmed glioma were retrospectively assessed between January 2013 and February 2017 in a prospective trial. Mean kurtosis (MK) and mean diffusivity (MD) metrics from DKI were assessed by two physicians blinded to the study from a volume of interest around the entire solid tumor...
July 12, 2017: Clinical Neuroradiology
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