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Neurooncology

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https://www.readbyqxmd.com/read/28915414/evaluation-of-surgical-decision-making-and-resulting-outcome-in-patients-with-highly-eloquent-glioblastoma-results-of-a-multicenter-assessment
#1
Jan Coburger, Mirjam Renovanz, Oliver Ganslandt, Florian Ringel, Christian Rainer Wirtz, Javier Segovia von Riehm
INTRODUCTION: Treatment of glioblastoma(GB) patients amenable only for a subtotal resection(STR) is controversial. Since outcome of patients is affected by surgical management, our aim was to assess surgical decision making and resulting outcome in patients with highly eloquent GBs. PATIENTS AND METHODS: We retrospectively assessed GB patients with intended sub-total resection (STR) or stereotactic biopsy (STX) of 3 neurooncological centers operated between 2008 and 2013...
September 8, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28835855/chemotherapeutic-xct-inhibitors-sorafenib-and-erastin-unraveled-with-the-synaptic-optogenetic-function-analysis-tool
#2
Marc Dahlmanns, Eduard Yakubov, Daishi Chen, Tina Sehm, Manfred Rauh, Nicolai Savaskan, Jana Katharina Wrosch
In the search for new potential chemotherapeutics, the compounds' toxicity to healthy cells is an important factor. The brain with its functional units, the neurons, is especially endangered during the radio- and chemotherapeutic treatment of brain tumors. The effect of the potential compounds not only on neuronal survival but also neuronal function needs to be taken into account. Therefore, in this study we aimed to comprehend the biological effects of chemotherapeutic xCT inhibition on healthy neuronal cells with our synaptic optogenetic function analysis tool (SOFA)...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28814253/pet-mr-tomographs-a-review-with-technical-radiochemical-and-clinical-perspectives
#3
Giampiero Giovacchini, Elisabetta Giovannini, Mattia Riondato, Andrea Ciarmiello
In the last decade, an increasing number of positron emission tomography / magnetic resonance (PET/MR) tomographs have been installed and many clinical studies were performed in the neurological field. Although PET/MR has many favorable properties to support the application in brain imaging, attenuation correction, and therefore accurate quantification, is a problem that still requires optimal solution. In this review we have summarized the three main methods that are currently used to correct for attenuation in PET/MR, namely atlas- or template-based methods, segmentation-based methods, and reconstruction-based methods...
August 16, 2017: Current Radiopharmaceuticals
https://www.readbyqxmd.com/read/28812012/spinal-cord-injury-due-to-tumour-or-metastasis-in-arag%C3%A3-n-northeastern-spain-1991-2008-incidence-time-trends-and-neurological-function
#4
Maayken Elizabeth Louise van den Berg, Juan M Castellote, Jose Ignacio Mayordomo, Ignacio Mahillo-Fernandez, Jesus de Pedro-Cuesta
PURPOSE: Understanding the presentation of spinal cord injury (SCI) due to tumours considering population distribution and temporal trends is key to managing SCI health services. This study quantified incidence rates, function scores, and trends of SCI due to tumour or metastasis over an 18-year time period in a defined region in Spain. METHODS: A retrospective cohort study included in-and outpatients with nontraumatic SCI due to tumour or metastasis admitted to a metropolitan hospital in Spain between 1991 and 2008...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28777037/applications-of-a-robotic-stereotactic-arm-for-pediatric-epilepsy-and-neurooncology-surgery
#5
Brandon A Miller, Afshin Salehi, David D Limbrick, Matthew D Smyth
OBJECTIVE The ROSA device is a robotic stereotactic arm that uses a laser system to register the patient's head or spine with MR or CT images. In this study, the authors analyze their experience with this system in pediatric neurosurgical applications and present selected cases that exemplify the usefulness of this system. METHODS The authors reviewed all cases that utilized the ROSA system at their institution. Patient demographics, pathology, complications, electrode placement, laser ablation, and biopsy accuracy were analyzed...
August 4, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28522381/a-survival-analysis-with-identification-of-prognostic-factors-in-a-series-of-110-patients-with-newly-diagnosed-glioblastoma-before-and-after-introduction-of-the-stupp-regimen-a-single-center-observational-study
#6
Rosanda Illic, Teresa Somma, Dragan Savic, Federico Frio, Mihailo Milicevic, Domenico Solari, Marina Nikitovic, Slobodan Lavrnic, Savo Raicevic, Snezana Milosevic, Luigi Maria Cavallo, Paolo Cappabianca, Danica Grujicic
BACKGROUND: Current treatment protocol for glioblastoma multiforme (GBM) is based on maximal safe resection followed by the Stupp protocol. In Serbia, temozolomide was introduced as adjuvant therapy in 2011. The aims of this study were to confirm the safety and efficacy on overall and progression-free survival of the Stupp protocol and evaluate the influence of prognostic factors in one of the largest series of patients with GBM treated over a 2-year period. METHODS: Between January 2010 and December 2012, 110 patients with newly diagnosed GBM underwent surgical removal at the Neurooncology Department of the Clinic Center of Serbia...
August 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28522182/hodotopy-neuroplasticity-and-diffuse-gliomas
#7
H Duffau
BACKGROUND AND PURPOSE: The historical approach in neurooncology is used to mainly investigate the tumor, with very few considerations regarding the brain itself. Nonetheless, to select the best personalized therapeutic management for each patient with a diffuse glioma, i.e. to optimize the "onco-functional balance", the brain reaction induced by glioma growth and migration should be studied. Indeed, due to strong interactions between the glioma and the brain, cerebral adaptive phenomena often occur in order to maintain neurological and cognitive functions, as well as to compensate glioma spreading...
May 15, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28512646/mri-in-glioma-immunotherapy-evidence-pitfalls-and-perspectives
#8
REVIEW
Domenico Aquino, Andrea Gioppo, Gaetano Finocchiaro, Maria Grazia Bruzzone, Valeria Cuccarini
Pseudophenomena, that is, imaging alterations due to therapy rather than tumor evolution, have an important impact on the management of glioma patients and the results of clinical trials. RANO (response assessment in neurooncology) criteria, including conventional MRI (cMRI), addressed the issues of pseudoprogression after radiotherapy and concomitant chemotherapy and pseudoresponse during antiangiogenic therapy of glioblastomas (GBM) and other gliomas. The development of cancer immunotherapy forced the identification of further relevant response criteria, summarized by the iRANO working group in 2015...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28390530/neurologic-applications-of-pet-mr-imaging
#9
REVIEW
Michelle M Miller-Thomas, Tammie L S Benzinger
PET/MR imaging benefits neurologic clinical care and research by providing spatially and temporally matched anatomic MR imaging, advanced MR physiologic imaging, and metabolic PET imaging. MR imaging sequences and PET tracers can be modified to target physiology specific to a neurologic disease process, with applications in neurooncology, epilepsy, dementia, cerebrovascular disease, and psychiatric and neurologic research. Simultaneous PET/MR imaging provides efficient acquisition of multiple temporally matched datasets, and opportunities for motion correction and improved anatomic assignment of PET data...
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28381315/comparison-of-allogeneic-and-syngeneic-rat-glioma-models-by-using-mri-and-histopathologic-evaluation
#10
Elena Biasibetti, Alberto Valazza, Maria T Capucchio, Laura Annovazzi, Luigi Battaglia, Daniela Chirio, Marina Gallarate, Marta Mellai, Elisabetta Muntoni, Elena Peira, Chiara Riganti, Davide Schiffer, Pierpaolo Panciani, Michele Lanotte
Research in neurooncology traditionally requires appropriate in vivo animal models, on which therapeutic strategies are tested before human trials are designed and proceed. Several reproducible animal experimental models, in which human physiologic conditions can be mimicked, are available for studying glioblastoma multiforme. In an ideal rat model, the tumor is of glial origin, grows in predictable and reproducible patterns, closely resembles human gliomas histopathologically, and is weakly or nonimmunogenic...
March 1, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28360216/prolonged-temozolomide-maintenance-therapy-in-newly-diagnosed-glioblastoma
#11
Marco Skardelly, Elena Dangel, Julia Gohde, Susan Noell, Felix Behling, Guilherme Lepski, Christian Borchers, Marilin Koch, Jens Schittenhelm, Sotirios Bisdas, Aline Naumann, Frank Paulsen, Daniel Zips, Ulrike von Hehn, Rainer Ritz, Marcos Soares Tatagiba, Ghazaleh Tabatabai
BACKGROUND: The impact of prolonging temozolomide (TMZ) maintenance beyond six cycles in newly diagnosed glioblastoma (GBM) remains a topic of discussion. We investigated the effects of prolonged TMZ maintenance on progression-free survival (PFS) and overall survival (OS). PATIENTS AND METHODS: In this retrospective single-center cohort study, we included patients with GBM who were treated with radiation therapy with concomitant and adjuvant TMZ. For analysis, patients were considered who either completed six TMZ maintenance cycles (group B), continued with TMZ therapy beyond six cycles (group C), or stopped TMZ maintenance therapy within the first six cycles (group A)...
May 2017: Oncologist
https://www.readbyqxmd.com/read/28324304/management-of-elderly-patients-with-glioblastoma
#12
REVIEW
Patrick Roth, Dorothee Gramatzki, Michael Weller
PURPOSE OF REVIEW: Glioblastoma represents one of the major challenges in neurooncology and approximately half of the patients are 60 years or older. We summarize the particular situation of elderly glioblastoma patients with a focus on therapeutic considerations. RECENT FINDINGS: Favorable molecular markers such as mutations in the isocitrate dehydrogenase (IDH) 1 or 2 genes are virtually absent in glioblastomas in elderly patients. Treatment options are similar to the situation in young patients and comprise surgical resection, radiation therapy, and alkylating chemotherapy...
April 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28300028/comparison-of-allogeneic-and-syngeneic-rat-glioma-models-by-using-mri-and-histopathologic-evaluation
#13
Elena Biasibetti Alberto Valazza Maria T Capucchio Laura Annovazzi Luigi Battaglia Daniela Chirio Marina Gallarate Marta Mellai Elisabetta Muntoni Elena Peira Chiara Riganti Davide Schiffer Pierpaolo Panciani And Michele Lanotte
Research in neurooncology traditionally requires appropriate in vivo animal models, on which therapeutic strategies aretestedbefore human trials are designed and proceed. Several reproducible animal experimental models, in which human physiologic conditions can be mimicked, are available for studying glioblastoma multiforme. In an ideal rat model, the tumor is of glial origin,grows in predictable and reproducible patterns, closely resembles human gliomas histopathologically, and is weakly or nonimmunogenic...
March 15, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28291217/-early-postoperative-results-of-surgical-treatment-of-patients-with-anterior-clinoidal-meningiomas
#14
S V Chernov, D A Rzaev, A V Kalinovsky, A B Dmitriev, A R Kasymov, A V Zotov, E V Gormolysova, E K Uzhakova
Resection of anterior clinoidal meningiomas is a challenging task due to their localization, frequent involvement of the major cerebral arteries and cranial nerves, a high risk of postoperative neurological deficits, and low radicalness of surgery. AIM: To evaluate the radicalness of microsurgical removal and a neurological deficit in the early postoperative period in patients with anterior clinoidal meningiomas. MATERIAL AND METHODS: A total of 35 patients with anterior clinoidal meningiomas underwent surgery at the Department of Neurooncology of the Novosibirsk Federal Neurosurgical Center in the period from 2013 to July 2016...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28263047/mapping-the-connectome-in-awake-surgery-for-gliomas-an-update
#15
Hugues Duffau
The traditional principle underlying oncological neurosurgery is to remove a tumor mass displacing the brain in order to increase survival. Recently, advances in connectomics enabled an improved understanding of cerebral processing, and led to a paradigmatic shift in tumor surgery based upon interactions between neurooncology and cognitive neurosciences. First, glioma is not a focal tumor invaginated within the parenchyma but a diffuse neoplastic disease migrating in the brain. This concept resulted in a new surgical ideology, i...
March 6, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28258507/neutron-activation-increases-activity-of-ruthenium-based-complexes-and-induces-cell-death-in-glioma-cells-independent-of-p53-tumor-suppressor-gene
#16
Aline Monezi Montel, Raquel Gouvêa Dos Santos, Pryscila Rodrigues da Costa, Elisângela de Paula Silveira-Lacerda, Alzir Azevedo Batista, Wagner Gouvêa Dos Santos
Novel metal complexes have received great attention in the last decades due to their potential anticancer activity. Notably, ruthenium-based complexes have emerged as good alternative to the currently used platinum-based drugs for cancer therapy, providing less toxicity and side effects to patients. Glioblastoma is an aggressive and invasive type of brain tumor and despite of advances is the field of neurooncology there is no effective treatment until now. Therefore, we sought to investigate the potential antiproliferative activity of phosphine-ruthenium-based complexes on human glioblastoma cell lines...
April 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28252421/evaluating-the-efficacy-of-neuronavigation-in-surgical-treatment-of-glial-tumors
#17
N Tursynov, M Grigolashvili, Sh Kauynbekova, S Grigolashvili
The experience of Medtronic Stealth Station S7 neuronavigation system in surgical treatment of patients with brain tumors is presented in this article. The study included 280 patients in age from 17 to 70 years, 128 women (46.6%), 152 men (53.4%) with tumors of the cerebral hemispheres. Basic topical diagnosis was based on MRI data. Intracerebral tumors were diagnosed in 248 patients, extracerebral in 32. Lesions of the dominant hemisphere of the brain were observed in 146 (52.1%) patients. We operated with navigation technologies...
January 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28245815/fast-magnetic-resonance-spectroscopic-imaging-techniques-in-human-brain-applications-in-multiple-sclerosis
#18
REVIEW
Oun Al-Iedani, Jeannette Lechner-Scott, Karen Ribbons, Saadallah Ramadan
Multi voxel magnetic resonance spectroscopic imaging (MRSI) is an important imaging tool that combines imaging and spectroscopic techniques. MRSI of the human brain has been beneficially applied to different clinical applications in neurology, particularly in neurooncology but also in multiple sclerosis, stroke and epilepsy. However, a major challenge in conventional MRSI is the longer acquisition time required for adequate signal to be collected. Fast MRSI of the brain in vivo is an alternative approach to reduce scanning time and make MRSI more clinically suitable...
February 28, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28093610/the-new-who-2016-classification-of-brain-tumors-what-neurosurgeons-need-to-know
#19
REVIEW
Rouzbeh Banan, Christian Hartmann
BACKGROUND: The understanding of molecular alterations of tumors has severely changed the concept of classification in all fields of pathology. The availability of high-throughput technologies such as next-generation sequencing allows for a much more precise definition of tumor entities. Also in the field of brain tumors a dramatic increase of knowledge has occurred over the last years partially calling into question the purely morphologically based concepts that were used as exclusive defining criteria in the WHO 2007 classification...
March 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28069420/confocal-laser-endomicroscopy-in-neurosurgery-an-alternative-to-instantaneous-sections
#20
David Breuskin, Jacek Szczygielski, Steffi Urbschat, Yoo-Jin Kim, Joachim Oertel
OBJECTIVE: Intraoperative distinction of brain tumor from surrounding brain is a crucial challenge in neuro-oncologic surgery. We directly compared confocal laser endomicroscopy (CLE) findings with intraoperative instantaneous sections by the neuropathologist in a blinded fashion. METHODS: The imaging device comprises a rigid endoscope with Hopkins rod lenses and a red wave length laser with a scanning depth of 80 μm. Brain tumor samples of 100 patients were investigated...
April 2017: World Neurosurgery
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