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https://www.readbyqxmd.com/read/28087392/predictors-and-mechanisms-of-epilepsy-occurrence-in-cerebral-gliomas-what-to-look-for-in-clinicopathology
#1
Cheng Huang, Xiao-Sa Chi, Xin Hu, Ni Chen, Qiao Zhou, Dong Zhou, Jin-Mei Li
Gliomas, especially low-grade gliomas, are highly epileptogenic brain tumors. Histopathological information is valuable in evaluating the diagnosis and/or biologic behavior of various gliomas. Here we explored the clinical data and histopathological predictors of the occurrence of epilepsy in patients with gliomas. A retrospective study examined 310 consecutive patients who had undergone surgical treatment for gliomas in our institution from January 2013 to January 2015. Clinical data and pathological examination results were analyzed...
January 10, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28079349/interleukin-13-receptor-alpha-2-as-a-marker-of-poorer-prognosis-in-high-grade-astrocytomas
#2
Masahiko Wanibuchi, Yuko Kataoka-Sasaki, Masanori Sasaki, Shinichi Oka, Yayoi Otsuka, Miki Yamaguchi, Hirofumi Ohnishi, Shunya Ohtaki, Shouhei Noshiro, Satoshi Ookawa, Takeshi Mikami, Nobuhiro Mikuni, Osamu Honmou
BACKGROUND: Interleukin-13 receptor alpha 2 (IL13Rα2) is considered a prognostic marker for gliomas according to the World Health Organization (WHO) grade. However, the expression levels of the marker vary from case to case, even within the same grade. We investigated whether IL13Rα2 could serve as a predictor of poorer prognosis in gliomas. METHODS: mRNA expression of IL13Rα2 was measured using real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) in 52 formalin-fixed paraffin-embedded glioma samples (4 pilocytic astrocytomas, 9 diffuse astrocytomas, 12 anaplastic astrocytomas, and 27 glioblastomas, grade IV)...
January 12, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28078639/low-preoperative-prognostic-nutritional-index-predicts-poor-survival-in-patients-with-newly-diagnosed-high-grade-gliomas
#3
Zhen-Qiang He, Chao Ke, Fuad Al-Nahari, Hao Duan, Cheng-Cheng Guo, Yang Wang, Xiang-Heng Zhang, Yin-Sheng Chen, Zhi-Gang Liu, Jian Wang, Zhong-Ping Chen, Xiao-Bing Jiang, Yong-Gao Mou
Preoperative prognostic nutritional index (PNI) has been widely demonstrated to predict survival of patients with malignant tumors. Its utility in predicting outcomes in patients with high-grade gliomas (HGG) remains undefined. A retrospective study of 188 HGG patients was conducted. An optimal PNI cut-off value was applied to stratify patients into high PNI (≥52.55, n = 78) and low PNI (<52.55, n = 110) groups. Univariate and multivariate analysis was performed to identify prognostic factors associated with overall survival (OS) and progression free survival (PFS)...
January 11, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28075478/high-expression-of-rab43-predicts-poor-prognosis-and-is-associated-with-epithelial-mesenchymal-transition-in-gliomas
#4
Ming-Zhi Han, Bin Huang, An-Jing Chen, Xin Zhang, Ran Xu, Jian Wang, Xin-Gang Li
The Ras-related GTP-binding protein (RAB) family plays an important role in regulating signal transduction and cellular processes including vesicle transport, cytoskeleton formation and membrane trafficking. More recently, several RAB members have been reported to promote tumorigenesis in many types of cancers. However, the clinical significance and potential function of RAB43 in gliomas remain unclear. Herein, we found that RAB43 was upregulated and positively correlated with the grade of progression in glioma patients by in silico analysis and immunohistochemistry (IHC)...
January 3, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28075197/validation-of-an-established-prognostic-score-after-re-irradiation-of-recurrent-glioma
#5
Kerstin A Kessel, Josefine Hesse, Christoph Straube, Claus Zimmer, Friederike Schmidt-Graf, Jürgen Schlegel, Bernhard Meyer, Stephanie E Combs
BACKGROUND: Re-irradiation (Re-RT) is offered widely in clinical routine, and has been established as a key element in the treatment of recurrent gliomas. At our center, generally re-resection is performed widely by an experienced neurosurgical team. Thus, Re-RT mostly offered to patients with macroscopic residuals or irresectable lesions, is applied later compared to other centers. Therefore, we sought to validate the Combs Prognostic Score developed in 2012 using our independent patient cohort...
January 11, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28073783/podoplanin-expression-in-primary-brain-tumors-induces-platelet-aggregation-and-increases-risk-of-venous-thromboembolism
#6
Julia Riedl, Matthias Preusser, Pegah Mir Seyed Nazari, Florian Posch, Simon Panzer, Christine Marosi, Peter Birner, Johannes Thaler, Christine Brostjan, Daniela Lötsch, Walter Berger, Johannes A Hainfellner, Ingrid Pabinger, Cihan Ay
Venous thromboembolism (VTE) is common in patients with brain tumors, and underlying mechanisms are unclear. We hypothesized that podoplanin, a sialomucin-like glycoprotein, increases the risk of VTE in primary brain tumors via its ability to induce platelet aggregation. Immunohistochemical staining against podoplanin and intratumoral platelet aggregates was performed in brain tumor specimens of 213 patients (mostly high-grade gliomas [89%]) included in the Vienna Cancer and Thrombosis Study (CATS), a prospective observational cohort study of patients with newly diagnosed cancer or progressive disease aimed at identifying patients at risk of VTE...
January 10, 2017: Blood
https://www.readbyqxmd.com/read/28073370/expression-site-of-p2ry12-in-residential-microglial-cells-in-astrocytomas-correlates-with-m1-and-m2-marker-expression-and-tumor-grade
#7
Changbin Zhu, Johan M Kros, Marcel van der Weiden, PingPin Zheng, Caroline Cheng, Dana A M Mustafa
The role of resident microglial cells in the pathogenesis and progression of glial tumors is still obscure mainly due to a lack of specific markers. Recently P2RY12, a P2 purinergic receptor, was introduced as a specific marker for microglial cells under normal and pathologic conditions. Here we analyzed the expression of P2RY12 in astrocytomas of various malignancy grades in relation to markers for M1 and M2 macrophage activation profiles by using two web-based glioma datasets and confocal immunohistochemistry to 28 astrocytoma samples grades II-IV...
January 10, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28069420/the-authors-herby-confirm-that-this-manuscript-has-neither-been-published-nor-submitted-to-any-other-journal-confocal-laser-endomicroscopy-in-neurosurgery-an-alternative-to-instantaneous-sections
#8
David Breuskin, Jacek Szczygielski, Steffi Urbschat, Yoo-Jin Kim, Joachim Oertel
INTRODUCTION: Intraoperative distinction of brain tumor from the surround brain is one of the crucial challenges in neurooncological surgery. In this study, confocal laser endomicroscope (CLE) findings were directly compared with intraoperative instantaneous sections by the neuropathologist in a blinded fashion. MATERIAL AND METHODS: The imaging device comprises of a rigid endoscope with Hopkins-Rod lenses and a red wave length laser with a scanning depth of 80 μm...
January 6, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28062673/dabrafenib-effective-in-pediatric-glioma
#9
(no author information available yet)
A phase I/II clinical trial suggests that dabrafenib shrinks or stabilizes low-grade gliomas in children with the BRAF V600E mutation. Objective, durable responses occurred in 38% of patients, and the side effects were less severe than with chemotherapy. The researchers have started a second trial for patients with glioma and other BRAF-mutant tumor types, this time evaluating dabrafenib combined with trametinib.
January 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28061488/the-use-of-mr-perfusion-imaging-in-the-evaluation-of-tumor-progression-in-gliomas
#10
Brian Snelling, Ashish H Shah, Simon Buttrick, Ronald Benveniste
OBJECTIVE: Diagnosing tumor progression and pseudoprogression remains challenging for many clinicians. Accurate recognition of these findings remains paramount given necessity of prompt treatment. However, no consensus has been reached on the optimal technique to discriminate tumor progression. We sought to investigate the role of magnetic resonance perfusion (MRP) to evaluate tumor progression in glioma patients. METHODS: An institutional retrospective review of glioma patients undergoing MRP with concurrent clinical follow up visit was performed...
January 1, 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28055959/preoperative-low-tri-iodothyronine-concentration-is-associated-with-worse-health-status-and-shorter-five-year-survival-of-primary-brain-tumor-patients
#11
Adomas Bunevicius, Vytenis Pranas Deltuva, Sarunas Tamasauskas, Timothy Smith, Edward R Laws, Robertas Bunevicius, Giorgio Iervasi, Arimantas Tamasauskas
BACKGROUND: Low tri-iodothyronine syndrome is associated with worse prognosis of severely ill patients. We investigated the association of thyroid hormone levels with discharge outcomes and 5-year mortality in primary brain tumor patients. METHODS: From January, 2010 until September, 2011, 230 patients (70% women) before brain tumor surgery were evaluated for cognitive (Mini mental State Examination; MMSE) and functional (Barthel index; BI) status, and thyroid function profile...
December 30, 2016: Oncotarget
https://www.readbyqxmd.com/read/28054416/anomalous-diffusion-in-cerebral-glioma-assessed-using-a-fractional-motion-model
#12
Boyan Xu, Lu Su, Zhenxiong Wang, Yang Fan, Gaolang Gong, Wenzhen Zhu, Peiyi Gao, Jia-Hong Gao
PURPOSE: To demonstrate the capability of the fractional motion (FM) model for describing anomalous diffusion in cerebral gliomas and to assess the potential feasibility of FM for grading these tumors. METHODS: Diffusion MRI images were acquired from brain tumor patients using a special Stejskal-Tanner diffusion sequence with variable diffusion gradient amplitudes and separation times. Patients with histopathologically confirmed gliomas, including astrocytic and oligoastrocytic tumors, were selected...
January 5, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28052098/idh1-r132h-mutation-enhances-cell-migration-by-activating-akt-mtor-signaling-pathway-but-sensitizes-cells-to-5-fu-treatment-as-nadph-and-gsh-are-reduced
#13
Huixia Zhu, Ye Zhang, Jianfeng Chen, Jiangdong Qiu, Keting Huang, Mindan Wu, Chunlin Xia
AIM OF STUDY: Mutations of isocitrate dehydrogenase 1 and 2 (IDH1 and IDH2) gene were recently discovered in vast majority of World Health Organization (WHO) grade II/III gliomas. This study is to understand the effects of IDH1 R132H mutation in gliomagenesis and to develop new strategies to treat glioma with IDH1 R132H mutation. MATERIALS AND METHODS: Over expression of IDH1 R132H in U87MG cells was done by transfecting cells with IDH1 R132H plasmid. MTT assay, scratch repair assay and western blot were performed to study effects of IDH1 R132H mutation on cell proliferation, migration, regulating AKT-mTOR signaling pathway and cell death respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28041673/epilepsy-related-brain-tumors
#14
Özdem Ertürk Çetin, Cihan İşler, Mustafa Uzan, Çiğdem Özkara
Seizures are among the most common presentations of brain tumors. Several tumor types can cause seizures in varying rates; neuroglial tumors and the gliomas are the most common ones. Brain tumors are the second most common cause of focal intractable epilepsy in epilepsy surgery series, with the highest frequency being dysembryoplastic neuroepithelial tumors and gangliogliomas. Seizure management is an important part of the treatment of patients with brain tumors. This review discusses clinical features and management of seizures in patients with brain tumors, including, neuroglial tumors, gliomas, meningioma and metastases; with the help of recent literature data...
December 21, 2016: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28039453/comparison-between-ultra-high-and-conventional-mono-b-value-dwi-for-preoperative-glioma-grading
#15
Yu-Chuan Hu, Lin-Feng Yan, Qian Sun, Zhi-Cheng Liu, Shu-Mei Wang, Yu Han, Qiang Tian, Ying-Zhi Sun, Dan-Dan Zheng, Wen Wang, Guang-Bin Cui
To compare the efficacy of ultra-high and conventional mono-b-value DWI for glioma grading, in 109 pathologically confirmed glioma patients, ultra-high apparent diffusion coefficient (ADCuh)was calculated using a tri-exponential mode, distributed diffusion coefficients (DDCs) and α values were calculated using a stretched-exponential model, and conventional ADC values were calculated using a mono-exponential model. The efficacy and reliability of parameters for grading gliomas were investigated using receiver operating characteristic (ROC) curve and intra-class correlation (ICC) analyses, respectively...
December 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/28039366/the-use-of-o-2-18f-fluoroethyl-l-tyrosine-pet-in-the-diagnosis-of-gliomas-located-in-the-brainstem-and-spinal-cord
#16
Caroline Tscherpel, Veronika Dunkl, Garry Ceccon, Gabriele Stoffels, Natalie Judov, Marion Rapp, Philipp T Meyer, Elena Rota Kops, Johannes Ermert, Gereon R Fink, Nadim J Shah, Karl-Josef Langen, Norbert Galldiks
BACKGROUND: Despite an increasing number of O-(2-(18)F-fluoroethyl)-L-tyrosine ((18)F-FET) PET studies in supratentorial gliomas, studies regarding the usefulness of (18)F-FET PET in brainstem and spinal cord gliomas to date remain scarce. METHODS: Thirty-six (18)F-FET PET scans were performed in 29 patients with brainstem (n = 29 scans) or spinal cord glioma (n = 7 scans). In 32 of 36 PET scans, a dynamic acquisition was performed. Fifteen scans in 15 patients were performed to assess newly diagnosed lesions, and 21 scans were obtained during follow-up: for diagnosing tumor progression (n = 15 scans in 14 patients) as well as for treatment monitoring (n = 6 scans in 3 patients)...
December 29, 2016: Neuro-oncology
https://www.readbyqxmd.com/read/28039266/malignant-astrocytic-tumor-progression-potentiated-by-jak-mediated-recruitment-of-myeloid-cells
#17
Prajwal Rajappa, William S Cobb, Emma Vartanian, Yujie Huang, Laura Daly, Caitlin Hoffman, Jane Zhang, Beiyi Shen, Rachel Yanowitch, Kunal Garg, Babacar Cisse, Sara Haddock, Jason T Huse, David J Pisapia, Timothy A Chan, David Lyden, Jacqueline Bromberg, Jeffrey P Greenfield
PURPOSE: While the tumor microenvironment has been known to play an integral role in tumor progression, the function of non-resident bone marrow-derived cells (BMDCs) remains to be determined in neurological tumors. Here we identified the contribution of BMDC recruitment in mediating malignant transformation from low- to high-grade gliomas. EXPERIMENTAL DESIGN: We analyzed human blood and tumor samples from patients with low- and high-grade gliomas. A spontaneous platelet derived growth factor (PDGF) murine glioma model (RCAS) was utilized to recapitulate human disease progression...
December 30, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28036297/c-jun-n-terminal-phosphorylation-regulates-dnmt1-expression-and-genome-wide-methylation-in-gliomas
#18
Dieter H Heiland, Roberto Ferrarese, Rainer Claus, Fangping Dai, Anie P Masilamani, Eva Kling, Astrid Weyerbrock, Teresia Kling, Sven Nelander, Maria S Carro
High-grade gliomas (HGG) are the most common brain tumors, with an average survival time of 14 months. A glioma-CpG island methylator phenotype (G-CIMP), associated with better clinical outcome, has been described in low and high-grade gliomas. Mutation of IDH1 is known to drive the G-CIMP status. In some cases, however, the hypermethylation phenotype is independent of IDH1 mutation, suggesting the involvement of other mechanisms. Here, we demonstrate that DNMT1 expression is higher in low-grade gliomas compared to glioblastomas and correlates with phosphorylated c-Jun...
December 28, 2016: Oncotarget
https://www.readbyqxmd.com/read/28030820/unsupervised-consensus-cluster-analysis-of-18f-fluoroethyl-l-tyrosine-positron-emission-tomography-identified-textural-features-for-the-diagnosis-of-pseudoprogression-in-high-grade-glioma
#19
Sied Kebir, Zain Khurshid, Florian C Gaertner, Markus Essler, Elke Hattingen, Rolf Fimmers, Björn Scheffler, Ulrich Herrlinger, Ralph A Bundschuh, Martin Glas
RATIONALE: Timely detection of pseudoprogression (PSP) is crucial for the management of patients with high-grade glioma (HGG) but remains difficult. Textural features of O-(2-[18F]fluoroethyl)-L-tyrosine positron emission tomography (FET-PET) mirror tumor uptake heterogeneity; some of them may be associated with tumor progression. METHODS: Fourteen patients with HGG and suspected of PSP underwent FET-PET imaging. A set of 19 conventional and textural FET-PET features were evaluated and subjected to unsupervised consensus clustering...
December 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/28030632/contribution-of-1p-19q-9p-and-10q-automated-analysis-by-fish-to-the-diagnosis-and-prognosis-of-oligodendroglial-tumors-according-to-who-2016-guidelines
#20
Karine Michaud, Marie de Tayrac, Myreille D'Astous, Céline Duval, Claudie Paquet, Oumar Samassekou, Peter Vincent Gould, Stéphan Saikali
OBJECTIVE: To study the feasibility and the diagnostic and prognostic interest of automated analysis of 1p, 19q, 9p and 10q status by FISH technique in oligodendroglial tumors. METHODS: We analyzed a retrospective series of 33 consecutive gliomas with oligodendroglial histology (originally diagnosed as 24 oligodendrogliomas and 9 oligoastrocytomas). For all cases, automated FISH analysis of 1p, 19q, 9p and 10q status were performed and compared to clinical and histological data, ATRX, IDH1R132H and alpha-internexin status (studied by immunohistochemistry) and overall survival (OS)...
2016: PloS One
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