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https://www.readbyqxmd.com/read/28640698/pediatric-gliomas-current-concepts-on-diagnosis-biology-and-clinical-management
#1
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)...
June 22, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28639047/apparent-diffusion-coefficient-maps-obtained-from-high-b-value-diffusion-weighted-imaging-in-the-preoperative-evaluation-of-gliomas-at-3t-comparison-with-standard-b-value-diffusion-weighted-imaging
#2
Qiang Zeng, Fei Dong, Feina Shi, Chenhan Ling, Biao Jiang, Jianmin Zhang
OBJECTIVE: To assess whether ADC maps obtained from high b value DWI were more valuable in preoperatively evaluating the grade, Ki-67 index and outcome of gliomas. METHODS: Sixty-three patients with gliomas, who underwent preoperative multi b value DWI at 3 T, were enrolled. The ADC1000, ADC2000 and ADC3000 maps were generated. Receiver operating characteristic analyses were conducted to determine the area under the curve (AUC) in differentiating high-grade gliomas (HGG) from low-grade gliomas (LGG)...
June 21, 2017: European Radiology
https://www.readbyqxmd.com/read/28629576/differentiation-of-brain-tumor-related-edema-based-on-3d-t1rho-imaging
#3
J E Villanueva-Meyer, R F Barajas, M C Mabray, W Chen, A Shankaranarayanan, P Koon, I J Barani, T Tihan, S Cha
BACKGROUND AND PURPOSE: Cerebral edema associated with brain tumors is an important source of morbidity. Its type depends largely on the capillary ultra-structures of the histopathologic subtype of underlying brain tumor. The purpose of our study was to differentiate vasogenic edema associated with brain metastases and infiltrative edema related to diffuse gliomas using quantitative 3D T1 rho (T1ρ) imaging. MATERIALS AND METHODS: Preoperative MR examination including whole brain 3D T1ρ imaging was performed in 23 patients with newly diagnosed brain tumors (9 with metastasis, 8 with lower grade glioma, LGG, 6 with glioblastoma, GBM)...
June 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28627210/lactobacillus-rhamnosusgg-reduces-hepatic-fibrosis-in-a-model-of-chronic-liver-disease-in-rats
#4
Thais Ortiz Hammes, Renata Leke, Thayssa Dalla Costa Escobar, Laisa Beduschi Fracasso, Fabiola Schons Meyer, Michael Éverton Andrades, Themis Reverbel da Silveira
BACKGROUND: The intestinal dysbiosis is common in chronic liver disease and can induce to inflammatory responses and mediate the collagen deposition in the liver. AIM: To evaluate the probiotic Lactobacillus rhamnosus GG (LGG) for the treatment of liver fibrosis in a model of chronic cholestatic liver disease in rats. METHODS: Male adult Wistar rats (n = 29) were submitted to common bile duct ligation (BDL groups) or manipulation of common bile duct without ligation (Ctrl groups)...
June 5, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28623604/craniospinal-irradiation-for-treatment-of-metastatic-pediatric-low-grade-glioma
#5
Derek S Tsang, Erin S Murphy, Sharon E Ezell, John T Lucas, Christopher Tinkle, Thomas E Merchant
Patients with disseminated pediatric low-grade glioma (LGG) initially treated with chemotherapy frequently experience disease progression, with 5-year event-free survival (EFS) of <20% and 10-year overall survival (OS) of approximately 70%. This study aimed to describe outcomes of metastatic pediatric LGG treated with craniospinal irradiation (CSI). A retrospective study was performed of all patients with metastatic pediatric LGG treated with CSI at a single institution. EFS was defined as survival without disease progression or secondary high-grade glioma...
June 17, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28608161/the-diagnostic-value-of-high-frequency-power-based-diffusion-weighted-imaging-in-prediction-of-neuroepithelial-tumour-grading
#6
Zhiye Chen, Peng Zhou, Bin Lv, Mengqi Liu, Yan Wang, Yulin Wang, Xin Lou, Qiuping Gui, Huiguang He, Lin Ma
OBJECTIVES: To retrospectively evaluate the diagnostic value of high-frequency power (HFP) compared with the minimum apparent diffusion coefficient (MinADC) in the prediction of neuroepithelial tumour grading. METHODS: Diffusion-weighted imaging (DWI) data were acquired on 115 patients by a 3.0-T MRI system, which included b0 images and b1000 images over the whole brain in each patient. The HFP values and MinADC values were calculated by an in-house script written on the MATLAB platform...
June 12, 2017: European Radiology
https://www.readbyqxmd.com/read/28600641/predicting-deletion-of-chromosomal-arms-1p-19q-in-low-grade-gliomas-from-mr-images-using-machine-intelligence
#7
Zeynettin Akkus, Issa Ali, Jiří Sedlář, Jay P Agrawal, Ian F Parney, Caterina Giannini, Bradley J Erickson
Several studies have linked codeletion of chromosome arms 1p/19q in low-grade gliomas (LGG) with positive response to treatment and longer progression-free survival. Hence, predicting 1p/19q status is crucial for effective treatment planning of LGG. In this study, we predict the 1p/19q status from MR images using convolutional neural networks (CNN), which could be a non-invasive alternative to surgical biopsy and histopathological analysis. Our method consists of three main steps: image registration, tumor segmentation, and classification of 1p/19q status using CNN...
June 9, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28599282/optimizing-a-machine-learning-based-glioma-grading-system-using-multi-parametric-mri-histogram-and-texture-features
#8
Xin Zhang, Lin-Feng Yan, Yu-Chuan Hu, Gang Li, Yang Yang, Yu Han, Ying-Zhi Sun, Zhi-Cheng Liu, Qiang Tian, Zi-Yang Han, Le-De Liu, Bin-Quan Hu, Zi-Yu Qiu, Wen Wang, Guang-Bin Cui
Current machine learning techniques provide the opportunity to develop noninvasive and automated glioma grading tools, by utilizing quantitative parameters derived from multi-modal magnetic resonance imaging (MRI) data. However, the efficacies of different machine learning methods in glioma grading have not been investigated.A comprehensive comparison of varied machine learning methods in differentiating low-grade gliomas (LGGs) and high-grade gliomas (HGGs) as well as WHO grade II, III and IV gliomas based on multi-parametric MRI images was proposed in the current study...
May 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28596790/high-doses-of-halotolerant-gut-indigenous-lactobacillus-plantarum-reduce-cultivable-lactobacilli-in-newborn-calves-without-increasing-its-species-abundance
#9
Alexander Rodriguez-Palacios, Henry R Staempfli, J Scott Weese
To elucidate the ecological effect of high oral doses of halotolerant (resistant to table salt) indigenous-gut bacteria on other commensals early in life, we conducted a culture-based study to quantify the effect of intestinal Lactobacillus plantarum strain of bovine origin (with remarkable aerobic growth capabilities and inhibitory activity against Escherichia coli O157:H7 and F5) on clinical health and gut lactobacilli/coliforms in newborn calves. In a double-blind placebo-randomized trial twelve colostrum-fed calves, consecutively born at a farm, were fed L...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28586047/identification-and-functional-analysis-of-the-risk-micrornas-associated-with-cerebral-low-grade-glioma-prognosis
#10
Xinrui Liu, Bin Song, Shanji Li, Nan Wang, Hongfa Yang
Low-grade gliomas (LGGs) are associated with neurological disability. The present study used microRNA (miRNA) expression profiles to identify risk miRNAs for potential prognosis of cerebral LGGs. miRNA expression profiles and clinical data from 408 patients with cerebral LGGs were obtained from the Cancer Genome Atlas database. Risk miRNAs were identified by plotting Kaplan‑Meier curves and Cox proportional hazard regression analysis with the survival and KMsurv packages in R. A regulatory network of miRNA‑targets was constructed, followed by gene ontology (GO) function and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis using the Database for Annotation, Visualization and Integrated Discovery...
June 6, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28575062/the-rs16906252-c-t-snp-is-not-associated-with-increased-overall-survival-or-temozolomide-response-in-a-han-chinese-glioma-cohort
#11
Kuo-Chen Wei, Chia-Yuan Chen, Li-Ying Feng, Wei-Tzu Huang, Chia-Hua Chen, Peng-Wei Hsu, Kai Wang, Leroy E Hood, Leslie Y Chen
The methylation status of O-6-methylguanine-DNA methyltransferase (MGMT) is associated with the prognosis in gliomas and in other cancers. Recent studies showed that rs16906252, an SNP in the MGMT promoter, is associated with promoter methylation and is a predictor of the overall survival time (OST) and the response to temozolomide (TMZ) treatment. However, these findings haven't been systematically investigated in the Han-Chinese population. We analyzed the relevance between rs16906252 polymorphisms, the MGMT methylation status, and the OST in 72 Han-Chinese gliomas patients...
2017: PloS One
https://www.readbyqxmd.com/read/28548599/an-extent-of-resection-threshold-for-seizure-freedom-in-patients-with-low-grade-gliomas
#12
David S Xu, Al-Wala Awad, Chad Mehalechko, Jeffrey R Wilson, Lynn S Ashby, Stephen W Coons, Nader Sanai
OBJECTIVE Seizures are the most common presenting symptom of newly diagnosed WHO Grade II gliomas (low-grade glioma [LGG]) and significantly impair quality of life. Although gross-total resection of LGG is associated with better seizure control, it remains unclear whether an extent of resection (EOR) "threshold" exists for long-term seizure control. Specifically, what proportion of FLAIR-positive tissue in patients with newly diagnosed LGG must be removed to achieve Engel Class I seizure freedom? To clarify the EOR threshold for long-term seizure control, the authors analyzed data from a consecutive series of patients with newly diagnosed LGG who presented with seizures and subsequently underwent microsurgical resection...
May 26, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28540668/fatigue-in-patients-with-low-grade-glioma-systematic-evaluation-of-assessment-and-prevalence
#13
REVIEW
Ellen M P van Coevorden-van Loon, Marijke B Coomans, Majanka H Heijenbrok-Kal, Gerard M Ribbers, Martin J van den Bent
Fatigue is the most prevalent and disabling symptom in cancer patients. Yet, scientific literature on this topic is scarce and reports disparate results. This study systematically reviews how fatigue is assessed in patients with low-grade glioma and evaluates its prevalence in LGG patients. A systematic literature search was performed in PubMed, Embase and PsychINFO for articles reporting on fatigue in patients with LGG. Two reviewers independently extracted data from selected articles. Inclusion criteria were: (1) patients with suspected or confirmed LGG; (2) fatigue was assessed as primary or secondary outcome measure; (3) age≥ 18 years; (4) full-length article written in English or Dutch...
May 24, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28531337/correlation-of-immune-phenotype-with-idh-mutation-in-diffuse-glioma
#14
Anna Sophie Berghoff, Barbara Kiesel, Georg Widhalm, Dorothee Wilhelm, Orsolya Rajky, Sebastian Kurscheid, Philip Kresl, Adelheid Wöhrer, Christine Marosi, Monika E Hegi, Matthias Preusser
Background: Tumor infiltrating lymphocytes (TILs) and programmed death ligand 1 (PD-L1) are targets of immune checkpoint inhibitors. Methods: Forty-three World Health Organization (WHO) grade II/III gliomas (39 IDH-mutant [mut], 4 IDH-wildtype [wt]) and 14 IDH-mut glioblastomas (GBM) were analyzed for TIL (CD3+; PD1+) infiltration and PD-L1 expression. Results were compared with the data of a previously published series of 117 IDH-wt glioblastomas. PD-L1 gene expression levels were evaluated in 677 diffuse gliomas grades II-IV from The Cancer Genome Atlas (TCGA) database...
May 20, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28527419/ring-opening-polymerization-of-new-3-o-branched-1-6-anhydro-glucopyranose-di-and-trisaccharide-monomers
#15
Chaolumen Bai, Davaanyam Budragchaa, Takashi Yoshida
New 3-O-branched 1, 6-anhydro glucopyranose disaccharide monomers, 1, 6-anhydro-2, 4-di-O- benzyl-3-O-(2', 3', 4', 6'-tetra-O-benzyl-α-D-mannopyranosyl)- (LGM 6) and -glucopyranosyl)-β-D- glucopyranose (LGG 7), and a trisaccharide monomer, 1, 6-anhydro-2, 4-di-O-benzyl-3-O-α-(2', 3', 6', 2″, 3″, 4″, 6″-hepta-O-benzyl- α-D-maltopyranosyl)-β-D-glucopyranose (LGMAL 8), were synthesized and polymerized. It was found that the 3-O-branched1, 6-anhydro disaccharide monomers were polymerized. However, the polymerizability was lower than that of the 4-O-branched disaccharide monomers reported previously, and the trisaccharide monomer was not polymerizable, probably due to the steric hindrance of the branched bulky mono and disaccharide units at the 3-O position in 1, 6-anhydro glucopyranose...
April 22, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28527004/comparative-volumetric-analysis-of-the-extent-of-resection-of-molecularly-and-histologically-distinct-low-grade-gliomas-and-its-role-on-survival
#16
Chikezie I Eseonu, Francisco Eguia, Karim ReFaey, Oscar Garcia, Fausto J Rodriguez, Kaisorn Chaichana, Alfredo Quinones-Hinojosa
The authors investigate the role of extent of resection (EOR) and genetic markers on patient outcome and survival for LGGs. We conducted a retrospective cohort between 2005 and 2015, of 109 adult patients who underwent surgery for a LGG by a single surgeon. Volumetric computations of MRI studies were conducted to evaluate the EOR, and genetic markers (IDH1, 1p/19q co-deletion, and p53) were assessed and their effects on survival and neurological outcome were evaluated. The median EOR was 88.1%. Permanent postoperative neurological deficits were seen in 4...
May 19, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28502295/-lactobacillus-rhamnosus-gg-improves-symptoms-and-its-mechnism-in-mice-with-ovalbumin-induced-food-allergy
#17
Shuanfeng Fang, Yu Zhang, Yun Zhang, Xiaohua Zhu, Bei Yie
Objective To investigate the effect of Lactobacillus rhamnosus GG (LGG) on peripheral blood IL-4/IFN-γ in mice with ovalbumin-induced food allergy. Methods The mice with food allergy were divided into 3 groups (n=10 in each group): food allergy model group, low-dose LGG group (1×10(8) CFU/mL, 200 μL/d) and high-dose LGG group (1×10(9) CFU/mL, 200 μL/d). The healthy mice (n=10) served as a control group. Mice in the LGG groups were given LGG for consecutive 22 days after modeling. The control mice and the food allergy model mice were given normal saline instead of LGG...
May 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28499219/oxidant-and-anti-oxidant-status-in-common-brain-tumors-correlation-to-tp53-and-human-biliverdin-reductase
#18
Pinar Atukeren, Sena Oner, Oguz Baran, Rahsan Kemerdere, Bulent Eren, Ufuk Cakatay, Taner Tanriverdi
OBJECTIVE: To assess oxidant and antioxidant status in patients with common brain tumors; namely meningiomas, low-grade gliomas (LGG) and high-grade gliomas (HGG) and to compare with normal brain tissues. PATIENTS AND METHODS: Almost nine biomarkers were measured in 59 brain tumors obtained during surgery and 15 normal brain tissues that were collected during autopsy. Results were compared between two groups. RESULTS: In general, protein oxidation and lipid peroxidation increased while antioxidant capacity decreased significantly in tumors compared to the controls (p<0...
May 3, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28479790/value-of-minimum-apparent-diffusion-coefficient-on-magnetic-resonance-imaging-as-a-biomarker-for-predicting-progression-of-disease-following-surgery-and-radiotherapy-in-glial-tumors-from-a-tertiary-care-center-in-northern-india
#19
Pramod Kumar Gupta, Rishi Awasthi, Shalini Singh, Sanjay Behari, K J Maria Das, Rakesh Kumar Gupta, Shaleen Kumar
PURPOSE: Studies have shown that cellularity of glial tumors are inversely correlated to minimum apparent diffusion coefficient (ADC) values derived on diffusion-weighted imaging (DWI). The purpose of this prospective exploratory study was to evaluate whether temporal change in "minimum ADC" values during follow-up predict progressive disease in glial tumors post radiotherapy and surgery. MATERIALS AND METHODS: Adult patients of glial tumors, subjected to surgery followed by Radiotherapy (RT), were included in the study...
April 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28469958/mir-421-inhibits-the-malignant-phenotype-in-glioma-by-directly-targeting-mef2d
#20
Liang Liu, Sitong Cui, Rui Zhang, Yan Shi, Liangsheng Luo
MicroRNA-421 (miRNA-421) dysregulation has been found in various human tumors, however, the biological function and molecular mechanism of miR-421 in glioma remain unclear. In this study, we investigated the potential biological roles of miR-421 in glioma cell lines. First, we demonstrated that compared with that of low grade gliomas (LGG), miR-421 expression is much lower in high grade gliomas (HGG) within the CGGA (Chinese Glioma Genome Atlas) database. MiR-421 expression in 5 normal brain tissues and 20 glioma tissues were in agreement with the result in the CGGA...
2017: American Journal of Cancer Research
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