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https://www.readbyqxmd.com/read/28730141/extracellular-vesicles-as-modulators-of-tumor-microenvironment-and-disease-progression-in-glioma
#1
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
#2
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-cns-histiocytic-sarcoma
#3
William Clifton, Oluwaseun Akinduro, Sebastian Lopez-Chiriboga, Dale Alan Whitaker, Ronald Reimer
Primary CNS histiocytic sarcoma (HS) is an extremely rare lymphoproliferative disorder which affects the central nervous system and behaves aggressively. There have been only twenty-seven reported cases of primary CNS HS. The paucity of literature on this entity has made diagnosis and treatment difficult both for the surgeon and pathologist. This is a case of primary CNS HS in a middle-aged female who presented with a supposed cerebellar abscess from an outside institution. The intraoperative frozen pathology was initially interpreted as a high grade glioma, however the final pathology was demonstrated to be histiocytic sarcoma...
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
#4
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...
July 12, 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
#5
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
#6
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
https://www.readbyqxmd.com/read/28687495/extracellular-vesicles-novel-promising-delivery-systems-for-therapy-of-brain-diseases
#7
REVIEW
David Rufino-Ramos, Patrícia R Albuquerque, Vitor Carmona, Rita Perfeito, Rui Jorge Nobre, Luis Pereira de Almeida
Extracellular vesicles (EVs) are cell-derived membrane vesicles virtually secreted by all cells, including brain cells. EVs are a major term that includes apoptotic bodies, microvesicles and exosomes. The release of EVs has been recognized as an important modulator in cross-talking between neurons, astrocytes, microglia and oligodendrocytes, not only in central nervous system (CNS) physiology but also in neurodegenerative and neuroinflammatory disease states as well as in brain tumors, such as glioma. EVs are able to cross the blood brain barrier (BBB), spread to body fluids and reach distant tissues...
July 4, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28685816/central-nervous-system-tumors-and-agricultural-exposures-in-the-prospective-cohort-agrican
#8
C Piel, C Pouchieu, S Tual, L Migault, C Lemarchand, C Carles, M Boulanger, A Gruber, V Rondeau, E Marcotullio, P Lebailly, I Baldi
Studies in farmers suggest a possible role of pesticides in the occurrence of Central Nervous System (CNS) tumors but scientific evidence is still insufficient. Using data from the French prospective agricultural cohort AGRICAN (Agriculture & Cancer), we investigated the associations between exposure of farmers and pesticide users to various kinds of crops and animal farming and the incidence of CNS tumors, overall and by subtypes. Over the 2005-2007, 181,842 participants completed the enrollment questionnaire that collected a complete job calendar with lifetime history of farming types...
July 7, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28680735/pilocytic-astrocytoma-a-rare-presentation-as-intraventricular-tumor
#9
Sidra Sattar, Naveed Z Akhunzada, Gohar Javed, Zeeshan Uddin, Yasir A Khan
BACKGROUND: Pilocytic astrocytoma (PA) is the most prevalent central nervous system (CNS) tumor in pediatric population and accounts for an approximate of 5-6% of all gliomas. This neoplasm can occur at all levels of the neuraxis, with majority (67%) arising in the cerebellum and optic pathway. PAs are World Health Organization Grade I tumors and are the most benign of all astrocytomas characterized by an excellent prognosis. Other differentials include subependymal giant cell astrocytoma (SEGA), ependymoma, meningioma, and low-grade gliomas such as pilocytic or diffuse astrocytoma; calcification is more commonly regarded as a feature of benign or slow-growing tumors...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28657431/csf-and-clinical-data-are-useful-in-differentiating-cns-inflammatory-demyelinating-disease-from-cns-lymphoma
#10
Ryotaro Ikeguchi, Yuko Shimizu, Satoru Shimizu, Kazuo Kitagawa
BACKGROUND: It is often difficult to diagnose central nervous system (CNS) inflammatory demyelinating diseases (IDDs) because they are similar to CNS lymphoma and glioma. OBJECTIVE: To evaluate whether cerebrospinal fluid (CSF) analysis can differentiate CNS IDDs from CNS lymphoma and glioma. METHODS: We measured CSF cell counts; concentrations of proteins, glucose, interleukin (IL)-6, IL-10, soluble IL-2 receptor (sIL-2R), and myelin basic protein; and IgG index in patients with multiple sclerosis (MS, n = 64), neuromyelitis optica spectrum disorder (NMOSD, n = 35), tumefactive demyelinating lesion (TDL, n = 17), CNS lymphoma ( n = 12), or glioma ( n = 10)...
June 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28646771/efficacy-of-alectinib-in-central-nervous-system-metastases-in-crizotinib-resistant-alk-positive-non-small-cell-lung-cancer-comparison-of-recist-1-1-and-rano-hgg-criteria
#11
Leena Gandhi, Sai-Hong Ignatius Ou, Alice T Shaw, Fabrice Barlesi, Anne-Marie C Dingemans, Dong-Wan Kim, D Ross Camidge, Brett G M Hughes, James C-H Yang, Javier de Castro, Lucio Crino, Hervé Léna, Pascal Do, Sophie Golding, Walter Bordogna, Ali Zeaiter, Ahmed Kotb, Shirish Gadgeel
BACKGROUND: Central nervous system (CNS) progression is common in patients with anaplastic lymphoma kinase-positive (ALK+) non-small-cell lung cancer (NSCLC) receiving crizotinib. Next-generation ALK inhibitors have shown activity against CNS metastases, but accurate assessment of response and progression is vital. Data from two phase II studies in crizotinib-refractory ALK+ NSCLC were pooled to examine the CNS efficacy of alectinib, a CNS-active ALK inhibitor, using Response Evaluation Criteria in Solid Tumours (RECIST version 1...
July 10, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28642179/analysis-of-outcomes-of-multidisciplinary-management-of-gliosarcoma-a-single-centre-study-2000-2013
#12
Abhinav Jain, Jason Correia, Patrick Schweder, Adele McMahon, Joseph Merola, Robert Aspoas
BACKGROUND: Gliosarcoma is a rare CNS tumour with a reported incidence of ∼2-8% of all gliomas. We reviewed the outcomes of patients treated at our institution over a 14-year period from 2000-2013 to characterize overall and progression free survival as well as to elucidate the additive effect of chemo-radiotherapy. METHODS: For the duration of 01/01/2000 to 31/12/2013, we retrospectively reviewed the clinical notes of all patients treated at our institution with a histopathological diagnosis of Gliosarcoma...
June 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28640707/response-assessment-in-neuro-oncology-clinical-trials
#13
Patrick Y Wen, Susan M Chang, Martin J Van den Bent, Michael A Vogelbaum, David R Macdonald, Eudocia Q Lee
Development of novel therapies for CNS tumors requires reliable assessment of response and progression. This requirement has been particularly challenging in neuro-oncology for which contrast enhancement serves as an imperfect surrogate for tumor volume and is influenced by agents that affect vascular permeability, such as antiangiogenic therapies. In addition, most tumors have a nonenhancing component that can be difficult to accurately quantify. To improve the response assessment in neuro-oncology and to standardize the criteria that are used for different CNS tumors, the Response Assessment in Neuro-Oncology (RANO) working group was established...
July 20, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28640700/cns-tumors-in-neurofibromatosis
#14
Jian Campian, David H Gutmann
Neurofibromatosis (NF) encompasses a group of distinct genetic disorders in which affected children and adults are prone to the development of benign and malignant tumors of the nervous system. The purpose of this review is to discuss the spectrum of CNS tumors arising in individuals with NF type 1 (NF1) and NF type 2 (NF2), their pathogenic etiologies, and the rational treatment options for people with these neoplasms. This article is a review of preclinical and clinical data focused on the treatment of the most common CNS tumors encountered in children and adults with NF1 and NF2...
July 20, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28640698/pediatric-gliomas-current-concepts-on-diagnosis-biology-and-clinical-management
#15
Dominik Sturm, Stefan M Pfister, David T W Jones
Gliomas are the most common CNS tumors in children and adolescents, and they show an extremely broad range of clinical behavior. The majority of pediatric gliomas present as benign, slow-growing lesions classified as grade I or II by the WHO classification of CNS tumors. These pediatric low-grade gliomas (LGGs) are fundamentally different from IDH-mutant LGGs occurring in adults, because they rarely undergo malignant transformation and show excellent overall survival under current treatment strategies. However, a significant fraction of gliomas develop over a short period of time and progress rapidly and are therefore classified as WHO grade III or IV high-grade gliomas (HGGs)...
July 20, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28627634/dtx3l-is-upregulated-in-glioma-and-is-associated-with-glioma-progression
#16
Peng Xu, Xuelei Tao, Chengjin Zhao, Qingfeng Huang, Hao Chang, Na Ban, Yuanqi Bei, Xiaojie Xia, Chaoyan Shen, Kun Wang, Li Xu, Peizhang Wu, Jianbing Ren, Donglin Wang
Gliomas are the most common primary brain tumors of the central nervous system (CNS). Due to the poor prognosis of glioma patients, it is urgent to develop more effective therapies. Deltex-3-like (DTX3L), also known as B-lymphoma and BAL-associated protein (BBAP), has been reported to play an important role in the progression of many tumors. This study aimed to investigate the clinical significance and biological function of DTX3L in human glioma. Clinically, the protein expression level of DTX3L is increased in glioma tissues compared with that observed in normal brain tissues...
June 13, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28593528/the-neuropathological-basis-to-the-functional-role-of-microglia-macrophages-in-gliomas
#17
Davide Schiffer, Marta Mellai, Enrica Bovio, Laura Annovazzi
The paper wants to be a tracking shot of the main recent acquisitions on the function and significance of microglia/macrophages in gliomas. The observations have been principally carried out on in vitro cultures and on tumor transplants in animals. Contrary to what is deduced from microglia in non-neoplastic pathologic conditions of central nervous system (CNS), most conclusions indicate that microglia acts favoring tumor proliferation through an immunosuppression induced by glioma cells. By immunohistochemistry, different microglia phenotypes are recognized in gliomas, from ramified microglia to frank macrophagic aspect...
June 7, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28592714/the-2016-who-classification-of-tumours-of-the-central-nervous-system-the-major-points-of-revision
#18
Takashi Komori
The updated 2016 edition of the World Health Organization (WHO) Classification of Tumours of the Central Nervous System (CNS) uses molecular parameters and the histology to define the main tumor categories for the first time. This represents a shift from the traditional principle of using neuropathological diagnoses, which are primarily based on the microscopic features, to using molecularly-oriented diagnoses. Major restructuring was made with regard to diffuse gliomas, medulloblastomas and other embryonal tumors...
June 8, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28582410/a-phase-i-study-of-single-agent-perifosine-for-recurrent-or-refractory-pediatric-cns-and-solid-tumors
#19
Oren J Becher, Nathan E Millard, Shakeel Modak, Brian H Kushner, Sofia Haque, Ivan Spasojevic, Tanya M Trippett, Stephen W Gilheeney, Yasmin Khakoo, David C Lyden, Kevin C De Braganca, Jill M Kolesar, Jason T Huse, Kim Kramer, Nai-Kong V Cheung, Ira J Dunkel
The PI3K/Akt/mTOR signaling pathway is aberrantly activated in various pediatric tumors. We conducted a phase I study of the Akt inhibitor perifosine in patients with recurrent/refractory pediatric CNS and solid tumors. This was a standard 3+3 open-label dose-escalation study to assess pharmacokinetics, describe toxicities, and identify the MTD for single-agent perifosine. Five dose levels were investigated, ranging from 25 to 125 mg/m2/day for 28 days per cycle. Twenty-three patients (median age 10 years, range 4-18 years) with CNS tumors (DIPG [n = 3], high-grade glioma [n = 5], medulloblastoma [n = 2], ependymoma [n = 3]), neuroblastoma (n = 8), Wilms tumor (n = 1), and Ewing sarcoma (n = 1) were treated...
2017: PloS One
https://www.readbyqxmd.com/read/28577579/patterns-of-relapse-in-primary-central-nervous-system-lymphoma-inferences-regarding-the-role-of-the-neuro-vascular-unit-and-monoclonal-antibodies-in-treating-occult-cns-disease
#20
Prakash Ambady, Rongwei Fu, Joao Prola Netto, Cymon Kersch, Jenny Firkins, Nancy D Doolittle, Edward A Neuwelt
BACKGROUND AND PURPOSE: The radiologic features and patterns of primary central nervous system lymphoma (PCNSL) at initial presentation are well described. High response rates can be achieved with first-line high-dose methotrexate (HD-MTX) based regimens, yet many relapse within 2 years of diagnosis. We describe the pattern of relapse and review the potential mechanisms involved in relapse. METHODS: We identified 78 consecutive patients who attained complete radiographic response (CR) during or after first-line treatment for newly diagnosed PCNSL (CD20+, diffuse large B cell type)...
June 2, 2017: Fluids and Barriers of the CNS
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