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Cancer: Glioma

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Total 252 results found since Jan 2013.

Multiethnic Genome-Wide Association Study of Cerebral White Matter Hyperintensities on MRI Original Articles
Conclusions— We identified 4 novel genetic loci that implicate inflammatory and glial proliferative pathways in the development of WMH in addition to previously proposed ischemic mechanisms.
Source: Circulation: Cardiovascular Genetics - April 21, 2015 Category: Cardiology Authors: Verhaaren, B. F. J., Debette, S., Bis, J. C., Smith, J. A., Ikram, M. K., Adams, H. H., Beecham, A. H., Rajan, K. B., Lopez, L. M., Barral, S., van Buchem, M. A., van der Grond, J., Smith, A. V., Hegenscheid, K., Aggarwal, N. T., de Andrade, M., Atkinson, Tags: Cerebrovascular disease/stroke, Genetics of Stroke, Risk Factors for Stroke, Epidemiology, Genetics of cardiovascular disease Original Articles Source Type: research

Mitochondrial Encephalopathy with Lactic Acidosis and Stroke (MELAS) presenting as an apparent neoplastic process (P5.015)
CONCLUSION: MELAS can mimic more common disorders. The slow onset of her symptoms and the MRI's appearance led to suspicion for neoplasm. This is the first report to our knowledge where MELAS has presented as such. Documentation of this and other unusual presentations of mitochondrial disease is crucial to appropriate diagnosis of the condition.Disclosure: Dr. Rothstein has nothing to disclose. Dr. Haq has nothing to disclose.
Source: Neurology - April 8, 2015 Category: Neurology Authors: Rothstein, A., Haq, I. Tags: Aging, Dementia, Cognitive, and Behavioral Neurology ePosters Source Type: research

Temozolomide in low-grade gliomas: living longer and better
Low-grade gliomas (LGGs) account for about a third of gliomas overall and 15% of all primary brain tumours. In adults, the majority of LGGs are WHO Grade II astrocytomas and oligodendrogliomas, which differ in molecular fingerprints and median survival, but share a propensity to malignant transformation after a number of years. Up to 90% of LGGs present with seizures and epilepsy may be the only symptom for many years, significantly impairing quality of life and impacting on social and professional functioning.1 In about 50% of cases, the epilepsy is refractory to antiepileptic drugs (AEDs) with a quarter of patients requi...
Source: Journal of Neurology, Neurosurgery and Psychiatry - March 13, 2015 Category: Neurosurgery Authors: Rees, J. Tags: Immunology (including allergy), Epilepsy and seizures, Neurooncology, Stroke, CNS cancer, Radiology, Surgical oncology Editorial commentaries Source Type: research

Seizure reduction in a low-grade glioma: more than a beneficial side effect of temozolomide
Conclusions TMZ may contribute to an important reduction in seizure frequency in patients with LGG. Seizure reduction following TMZ treatment has prognostic significance and may serve as an important clinical outcome measure in patients with LGG.
Source: Journal of Neurology, Neurosurgery and Psychiatry - March 13, 2015 Category: Neurosurgery Authors: Koekkoek, J. A. F., Dirven, L., Heimans, J. J., Postma, T. J., Vos, M. J., Reijneveld, J. C., Taphoorn, M. J. B. Tags: Epilepsy and seizures, Neurooncology, Stroke, CNS cancer Neuro-oncology Source Type: research

The subpopulation of microglia expressing functional muscarinic acetylcholine receptors expands in stroke and Alzheimer's disease.
Abstract Microglia undergo a process of activation in pathology which is controlled by many factors including neurotransmitters. We found that a subpopulation (11 %) of freshly isolated adult microglia respond to the muscarinic acetylcholine receptor agonist carbachol with a Ca(2+) increase and a subpopulation of similar size (16 %) was observed by FACS analysis using an antibody against the M3 receptor subtype. The carbachol-sensitive population increased in microglia/brain macrophages isolated from tissue of mouse models for stroke (60 %) and Alzheimer's disease (25 %), but not for glioma and multiple sclero...
Source: Brain Structure and Function - December 19, 2014 Category: Neuroscience Authors: Pannell M, Meier MA, Szulzewsky F, Matyash V, Endres M, Kronenberg G, Prinz V, Waiczies S, Wolf SA, Kettenmann H Tags: Brain Struct Funct Source Type: research

The subpopulation of microglia expressing functional muscarinic acetylcholine receptors expands in stroke and Alzheimer’s disease
Abstract Microglia undergo a process of activation in pathology which is controlled by many factors including neurotransmitters. We found that a subpopulation (11 %) of freshly isolated adult microglia respond to the muscarinic acetylcholine receptor agonist carbachol with a Ca2+ increase and a subpopulation of similar size (16 %) was observed by FACS analysis using an antibody against the M3 receptor subtype. The carbachol-sensitive population increased in microglia/brain macrophages isolated from tissue of mouse models for stroke (60 %) and Alzheimer’s disease (25 %), but not for glioma and multiple sclero...
Source: Anatomy and Embryology - December 18, 2014 Category: Anatomy Source Type: research

Identification of Circulating MicroRNAs as Potential Biomarkers for Detecting Acute Ischemic Stroke.
In conclusion, we identified the changed expression pattern of miRNAs in IS. Serum miR-32-3p, miR-106-5p, miR-1246, and miR-532-5p may serve as potential diagnostic biomarkers for IS. Our results also demonstrate a novel role for miRNAs in the pathogenesis of IS. PMID: 25410304 [PubMed - as supplied by publisher]
Source: Cellular and Molecular Neurobiology - November 20, 2014 Category: Cytology Authors: Li P, Teng F, Gao F, Zhang M, Wu J, Zhang C Tags: Cell Mol Neurobiol Source Type: research

Alternative functions of the brain transsulfuration pathway represent an underappreciated aspect of brain redox biochemistry with significant potential for therapeutic engagement.
Abstract Scientific appreciation for the subtlety of brain sulfur chemistry has lagged, despite understanding that the brain must maintain high glutathione (GSH) to protect against oxidative stress in tissue that has both a high rate of oxidative respiration and a high content of oxidation-prone polyunsaturated fatty acids. In fact, the brain was long thought to lack a complete transsulfuration pathway (TSP) for cysteine synthesis. It is now clear that not only does the brain possess a functional TSP, but brain TSP enzymes catalyze a rich array of alternative reactions that generate novel species including the gas...
Source: Free Radical Biology and Medicine - November 6, 2014 Category: Biology Authors: Hensley K, Denton TT Tags: Free Radic Biol Med Source Type: research

Rt-08 * proton therapy (pt) large-volume re-irradiation for recurrent glioma: overall survival (os) and toxicity outcomes
CONCLUSION: Large-volume PT re-irradiation for recurrent glioma is safe and associated with promising OS outcomes, particularly in the setting of bevacizumab-refractory tumors.
Source: Neuro-Oncology - November 3, 2014 Category: Cancer & Oncology Authors: Desai, B., Rockne, R., Rademaker, A., Raizer, J., Paleologos, N., Merrell, R., Grimm, S., Azeem, S., Hartsell, W., Sweeney, P., Swanson, K., Gondi, V. Tags: RADIATION THERAPY (CLINICAL AND/OR LABORATORY RESEARCH) Source Type: research

Nc-01 * attentional and language functioning in adult patients with glioma: a voxel-based lesion-symptom mapping study
CONCLUSION: These findings identify some of the key anatomic structures involved in attentional and language functioning in adult patients with glioma using an innovative lesion analysis technique.
Source: Neuro-Oncology - November 3, 2014 Category: Cancer & Oncology Authors: Banerjee, P., Leu, K., Harris, R., Cloughesy, T., Bookheimer, S., Liau, L., Nghiemphu, P., Lai, A., Ellingson, B. Tags: NEURO-COGNITIVE AND FUNCTIONAL OUTCOMES Source Type: research

Cn-14 * retrospective analysis of ischemic cerebral strokes in patients diagnosed with a glioblastoma during the course of a bevacizumab treatment
Bevacizumab is an anti-vascular endothelial growth factor approved in the treatment of recurrent glioblastoma. It prolongs progression-free survival, improes radiologic response and contributes to reduce the dose of dexamethasone required to control peritumoral edema. Arterial and venous thromboembolic events represent significant toxicities related to the use of angiogenesis inhibitors. Various mechanisms could be implicated in bevacizumab-related strokes, as cardioembolic, lacunar stroke related to hypertension, deep venous thrombosis passing through a patent foramen ovale, pro-coagulant effect of the underlying glioblas...
Source: Neuro-Oncology - November 3, 2014 Category: Cancer & Oncology Authors: Maurice, C., Mason, W. P. Tags: COMPLICATIONS OF THERAPY AND NEUROTOXICITY Source Type: research

Endoscopic supraorbital eyebrow approach for the surgical treatment of extraaxialand intraaxial tumors.
Conclusions The endoscopic supraorbital eyebrow approach is a safe and effective minimally invasive approach to remove extra- and intraaxial anterior skull base, parasellar, and frontal lesions, promoting a rapid recovery and short hospital stay. The location of the eyebrow incision demands a meticulous cosmetic closure, but, with proper technique, cosmetic results are excellent. PMID: 25270140 [PubMed - in process]
Source: Neurosurgical Focus - October 1, 2014 Category: Neurosurgery Authors: Gazzeri R, Nishiyama Y, Ph D, Teo C Tags: Neurosurg Focus Source Type: research

Abstract 4058: Acid-sensing ion channel 1a (ASIC1a) contributes to cell proliferation and migration caused by acidic environment in human glioma cells
Conclusions: Extracellular acid reduces proliferation and migration in glioma cells. Extracellular acid induces death of glioma cells via ASIC1a mechanisms. These results indicate the presence of ASIC1a in glioma cells and may play significant role in glioma progression. This work was supported by the National Institutes of Health grant numbers NIH R01NS047506, R01NS066027, UL1 RR025008, U54 RR026137, AHA 0840132N, and ALZ IIRG-10-173350. Citation Format: Mingli Liu, Alyssa (Aihui) Guo, Christopher Ghiathi, Zhigang Xiong. Acid-sensing ion channel 1a (ASIC1a) contributes to cell proliferation and migration caused by acidic ...
Source: Cancer Research - September 30, 2014 Category: Cancer & Oncology Authors: Liu, M., Guo, A., Ghiathi, C., Xiong, Z. Tags: Tumor Biology Source Type: research

Quantitative Longitudinal Evaluation of Diaschisis-Related Cerebellar Perfusion and Diffusion Parameters in Patients with Supratentorial Hemispheric High-Grade Gliomas After Surgery
In this study, we investigated the longitudinal evolution of diaschisis-related cerebellar perfusion and diffusion tensor-imaging (DTI) changes in patients after surgery for supratentorial brain tumors. Eight patients (M:F 5:3, age 8–22 years) who received surgery for supratentorial high-grade gliomas were evaluated. Initial MRI studies were performed 19–54 days postoperatively, with follow-ups at 2- to 3-month intervals. For each study, parametric maps of the cerebellum were generated and coregistered to T1-weighted images that had been previously segmented for cGM and cWM. Aggregate mean values of CBV, cerebral blo...
Source: The Cerebellum - September 25, 2014 Category: Neurology Source Type: research

Hypoxia-induced miR-497 decreases glioma cell sensitivity to TMZ by inhibiting apoptosis
Hypoxia is a common characteristic of rapidly growing tumors [1]. Hypoxic conditions induce many different types of physiological or pathophysiological responses, including high-altitude adaptation, stroke, wound healing, myocardial infarction, and cancer [2]. These changes are carefully controlled by a large number of hypoxia-inducible genes [2]. Among these genes, hypoxia-inducible factor 1α (HIF1α) is the key transcription factor induced by hypoxia, increasing the expression of many genes that are involved in metastasis, tumor recurrence, and angiogenesis [3–5].
Source: FEBS Letters - July 28, 2014 Category: Biochemistry Authors: Jin Lan, Yajun Xue, Huairui Chen, Sanhu Zhao, Zhijian Wu, Jun Fang, Cong Han, Meiqing Lou Source Type: research