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https://www.readbyqxmd.com/read/28895245/genetic-evolution-of-glioblastoma-stem-like-cells-from-primary-to-recurrent-tumor
#1
Francesca Orzan, Francesca De Bacco, Giovanni Crisafulli, Serena Pellegatta, Benedetta Mussolin, Giulia Siravegna, Antonio D'Ambrosio, Paolo M Comoglio, Gaetano Finocchiaro, Carla Boccaccio
Glioblastoma (GBM) is a lethal tumor that displays remarkable genetic heterogeneity. It is also known that GBM contains a cell hierarchy driven by stem-like cells (GSCs), responsible for tumor generation, therapeutic resistance and relapse. An important and still open issue is whether phylogenetically related GSCs can be found in matched primary and recurrent GBMs, and reflect tumor genetic evolution under therapeutic pressure. To address this, we analyzed the mutational profile of GSCs isolated from either human primary GBMs (primary GSCs) or their matched tumors recurring after surgery and chemo-radiotherapy (recurrent GSCs)...
September 12, 2017: Stem Cells
https://www.readbyqxmd.com/read/28753575/glioblastoma-and-glioblastoma-stem-cells-are-dependent-on-functional-mth1
#2
Linda Pudelko, Pegah Rouhi, Kumar Sanjiv, Helge Gad, Christina Kalderén, Andreas Höglund, Massimo Squatrito, Alberto J Schuhmacher, Steven Edwards, Daniel Hägerstrand, Ulrika Warpman Berglund, Thomas Helleday, Lars Bräutigam
Glioblastoma multiforme (GBM) is an aggressive form of brain cancer with poor prognosis. Cancer cells are characterized by a specific redox environment that adjusts metabolism to its specific needs and allows the tumor to grow and metastasize. As a consequence, cancer cells and especially GBM cells suffer from elevated oxidative pressure which requires antioxidant-defense and other sanitation enzymes to be upregulated. MTH1, which degrades oxidized nucleotides, is one of these defense enzymes and represents a promising cancer target...
July 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28717226/safe-brain-tumor-resection-does-not-depend-on-surgery-alone-role-of-hemodynamics
#3
Stefanie Bette, Benedikt Wiestler, Felicitas Wiedenmann, Johannes Kaesmacher, Martin Bretschneider, Melanie Barz, Thomas Huber, Yu-Mi Ryang, Eberhard Kochs, Claus Zimmer, Bernhard Meyer, Tobias Boeckh-Behrens, Jan S Kirschke, Jens Gempt
Aim of this study was to determine if perioperative hemodynamics have an impact on perioperative infarct volume and patients' prognosis. 201 cases with surgery for a newly diagnosed or recurrent glioblastoma were retrospectively analyzed. Clinical data and perioperative hemodynamic parameters, blood tests and time of surgery were recorded. Postoperative infarct volume was quantitatively assessed by semiautomatic segmentation. Mean diastolic blood pressure (dBP) during surgery (rho -0.239, 95% CI -0.11 - -0...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28706148/expression-differences-of-programmed-death-ligand-1-in-de-novo-and-recurrent-glioblastoma-multiforme
#4
Sabrina Heynckes, Annette Gaebelein, Gerrit Haaker, Jürgen Grauvogel, Pamela Franco, Irina Mader, Maria Stella Carro, Marco Prinz, Daniel Delev, Oliver Schnell, Dieter Henrik Heiland
The biology of recurrent glioblastoma multiforme (GBM) is a dynamic process influenced by selection pressure induced by different antitumoural therapies. The poor clinical outcome of tumours in the recurrent stage necessitates the development of effective therapeutic strategies. Checkpoint-inhibition (PD1/PD-L1 Inhibition) is a hallmark of immunotherapy being investigated in ongoing clinical trials. The purpose of this study was to analyse the PD-L1 expression in de-novo and recurrent glioblastoma multiforme and to explore associated genetic alterations and clinical traits...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28696296/multiplexed-rnai-therapy-against-brain-tumor-initiating-cells-via-lipopolymeric-nanoparticle-infusion-delays-glioblastoma-progression
#5
Dou Yu, Omar F Khan, Mario L Suvà, Biqin Dong, Wojciech K Panek, Ting Xiao, Meijing Wu, Yu Han, Atique U Ahmed, Irina V Balyasnikova, Hao F Zhang, Cheng Sun, Robert Langer, Daniel G Anderson, Maciej S Lesniak
Brain tumor-initiating cells (BTICs) have been identified as key contributors to therapy resistance, recurrence, and progression of diffuse gliomas, particularly glioblastoma (GBM). BTICs are elusive therapeutic targets that reside across the blood-brain barrier, underscoring the urgent need to develop novel therapeutic strategies. Additionally, intratumoral heterogeneity and adaptations to therapeutic pressure by BTICs impede the discovery of effective anti-BTIC therapies and limit the efficacy of individual gene targeting...
July 25, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28685138/immunophenotypic-signature-of-primary-glioblastoma-multiforme-a-case-of-extended-progression-free-survival
#6
Puneet Gandhi, Richa Khare, Nitin Garg, Sandeep Sorte
Glioblastoma-multiforme (GBM), the most aggressive glial tumor, has a worldwide age-adjusted incidence ranging from 0.59-3.69/100000 persons. Despite current multimodal-treatment approach, median-survival time and progression-free survival (PFS) remains short. Glioblastomas display a variety of molecular alterations, which necessitates determining which of these have a prognostic significance. This is a case of a 45-year-old patient who presented with progressive slurring of speech and features of raised intracranial pressure...
June 16, 2017: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/28666727/liposomal-temozolomide-drug-delivery-using-convection-enhanced-delivery
#7
Mirjam M Nordling-David, Roni Yaffe, David Guez, Hadar Meirow, David Last, Etty Grad, Sharona Salomon, Shirley Sharabi, Yael Levi-Kalisman, Gershon Golomb, Yael Mardor
Even though some progress in diagnosis and treatment has been made over the years, there is still no definitive treatment available for Glioblastoma multiforme (GBM). Convection-enhanced delivery (CED), a continuous infusion-mediated pressure gradient via intracranial catheters, studied in clinical trials, enables in situ drug concentrations several orders of magnitude greater than those achieved by systemic administration. We hypothesized that the currently limited efficacy of CED could be enhanced by a liposomal formulation, thus achieving enhanced drug localization to the tumor site with minimal toxicity...
September 10, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28663722/bacoside-a-induces-tumor-cell-death-in-human-glioblastoma-cell-lines-through-catastrophic-macropinocytosis
#8
Sebastian John, K C Sivakumar, Rashmi Mishra
Glioblastoma multiforme (GBM) is a highly aggressive type of brain tumor with an extremely poor prognosis. Recent evidences have shown that the "biomechanical imbalances" induced in GBM patient-derived glioblastoma cells (GC) and in vivo via the administration of synthetic small molecules, may effectively inhibit disease progression and prolong survival of GBM animal models. This novel concept associated with de novo anti-GBM drug development has however suffered obstacles in adequate clinical utility due to the appearance of unrelated toxicity in the prolonged therapeutic windows...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28542439/host-mediated-inflammatory-influence-on-glioblastoma-multiforme-recurrence-following-high-dose-ionizing-radiation
#9
J Tyson McDonald, Xuefeng Gao, Cole Steber, Jawon Lee Breed, Caitlin Pollock, Lili Ma, Lynn Hlatky
Despite optimal clinical treatment, glioblastoma multiforme (GBM) inevitably recurs. Standard treatment of GBM, exposes patients to radiation which kills tumor cells, but also modulates the molecular fingerprint of any surviving tumor cells and the cross-talk between those cells and the host. Considerable investigation of short-term (hours to days) post-irradiation tumor cell response has been undertaken, yet long-term responses (weeks to months) which are potentially even more informative of recurrence, have been largely overlooked...
2017: PloS One
https://www.readbyqxmd.com/read/28540666/evaluation-of-mitochondrial-respiratory-function-in-highly-glycolytic-glioma-cells-reveals-low-adp-phosphorylation-in-relation-to-oxidative-capacity
#10
Erika Rodrigues-Silva, Edilene S Siqueira-Santos, Juliana S Ruas, Raffaela S Ignarro, Tiago R Figueira, Fábio Rogério, Roger F Castilho
High-grade gliomas are aggressive and intensely glycolytic tumors. In the present study, we evaluated the mitochondrial respiratory function of glioma cells (T98G and U-87MG) and fresh human glioblastoma (GBM) tissue. To this end, measurements of oxygen consumption rate (OCR) were performed under various experimental conditions. The OCR of T98G and U-87MG cells was well coupled to ADP phosphorylation based on the ratio of ATP produced per oxygen consumed of ~2.5. In agreement, the basal OCR of GBM tissue was also partially associated with ADP phosphorylation...
July 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28453747/natural-course-and-prognosis-of-anaplastic-gangliogliomas-a-multicenter-retrospective-study-of-43-cases-from-the-french-brain-tumor-database
#11
Louis-Marie Terrier, Luc Bauchet, Valérie Rigau, Aymeric Amelot, Sonia Zouaoui, Isabelle Filipiak, Agnès Caille, Fabien Almairac, Marie-Hélène Aubriot-Lorton, Anne-Marie Bergemer-Fouquet, Eric Bord, Philippe Cornu, Alain Czorny, Phong Dam Hieu, Bertrand Debono, Marie-Bernadette Delisle, Evelyne Emery, Walid Farah, Guillaume Gauchotte, Catherine Godfraind, Jacques Guyotat, Bernard Irthum, Kevin Janot, Pierre-Jean Le Reste, Dominique Liguoro, Hugues Loiseau, Guillaume Lot, Vincent Lubrano, Emmanuel Mandonnet, Philippe Menei, Philippe Metellus, Serge Milin, Bertrand Muckenstrum, Pierre-Hugues Roche, Audrey Rousseau, Emmanuelle Uro-Coste, Anne Vital, Jimmy Voirin, Michel Wager, Marc Zanello, Patrick François, Stéphane Velut, Pascale Varlet, Dominique Figarella-Branger, Johan Pallud, Ilyess Zemmoura
Background: Anaplastic gangliogliomas (GGGs) are rare tumors whose natural history is poorly documented. We aimed to define their clinical and imaging features and to identify prognostic factors. Methods: Consecutive cases of anaplastic GGGs in adults prospectively entered into the French Brain Tumor Database between March 2004 and April 2014 were screened. After diagnosis was confirmed by pathological review, clinical, imaging, therapeutic, and outcome data were collected retrospectively...
May 1, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28413540/intraventricular-glioblastoma-multiforme-mimicking-meningioma-and-review-of-the-literature
#12
Ashis Patnaik, Sudhansu S Mishra, Satya B Senapati
Glioblastoma multiforme (GBM) is the most common primary brain tumor and is usually found in aged persons in the cerebral hemispheres particularly the frontotemporal region. But intraventricular GBM is rare and only few cases have been reported in the literature. We report a case of a 27-year-old man who presented with headache, vision loss in both eyes, and other signs and symptoms of increased intracranial pressure. Computed tomography and magnetic resonance imaging showed an intraventricular, well-circumscribed lesion with homogeneous enhancement of contrast, suggestive of meningioma that is more common than GBM in this location...
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28215428/glioblastoma-presenting-as-spontaneous-intracranial-haemorrhage-case-report-and-review-of-the-literature
#13
REVIEW
Danica M Joseph, Anthea H O'Neill, Ronil V Chandra, Leon T Lai
Glioblastoma (GB) classically presents with symptoms of raised intracranial pressure and gradual progressive neurological deficits. An acute presentation, with intracerebral haemorrhage (ICH) and rapid clinical deterioration, occurs infrequently. Contemporary imaging modalities do not reliably reflect underlying mass lesions in parenchymal brain haemorrhage at first presentation. We report a delayed diagnosis of GB in a 21-year-old patient presenting with spontaneous ICH and a negative initial neurovascular workup...
February 15, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28153049/longitudinal-analysis-of-treatment-induced-genomic-alterations-in-gliomas
#14
E Zeynep Erson-Omay, Octavian Henegariu, S Bülent Omay, Akdes Serin Harmancı, Mark W Youngblood, Ketu Mishra-Gorur, Jie Li, Koray Özduman, Geneive Carrión-Grant, Victoria E Clark, Caner Çağlar, Mehmet Bakırcıoğlu, M Necmettin Pamir, Viviane Tabar, Alexander O Vortmeyer, Kaya Bilguvar, Katsuhito Yasuno, Lisa M DeAngelis, Joachim M Baehring, Jennifer Moliterno, Murat Günel
BACKGROUND: Glioblastoma multiforme (GBM) constitutes nearly half of all malignant brain tumors and has a median survival of 15 months. The standard treatment for these lesions includes maximal resection, radiotherapy, and chemotherapy; however, individual tumors display immense variability in their response to these approaches. Genomic techniques such as whole-exome sequencing (WES) provide an opportunity to understand the molecular basis of this variability. METHODS: Here, we report WES-guided treatment of a patient with a primary GBM and two subsequent recurrences, demonstrating the dynamic nature of treatment-induced molecular changes and their implications for clinical decision-making...
February 2, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28109858/radiologic-dilemma-in-an-extra-axial-petroclival-lesion-low-grade-versus-high-grade
#15
Madhivanan Karthigeyan, Chirag Kamal Ahuja, Debjyoti Chatterjee, Pravin Salunke
BACKGROUND: Radiologic differentiation between a low-grade and high-grade lesion is crucial when deciding extent of resection and prognostication. Occasionally, imaging features can be confusing between the 2 lesions. We report a case that presented such a radiologic dilemma. The lesion appeared benign and extra-axial on routine magnetic resonance imaging sequences. However, subtle clinical and imaging clues pointed to a high-grade lesion. CASE DESCRIPTION: A 27-year-old woman presented with multiple cranial nerve palsies, gait ataxia, and features of increased intracranial pressure...
April 2017: World Neurosurgery
https://www.readbyqxmd.com/read/27980285/convection-enhanced-delivery-of-therapeutics-for-malignant-gliomas
#16
Ryuta Saito, Teiji Tominaga
Convection-enhanced delivery (CED) circumvents the blood-brain barrier by delivering agents directly into the tumor and surrounding parenchyma. CED can achieve large volumes of distribution by continuous positive-pressure infusion. Although promising as an effective drug delivery method in concept, the administration of therapeutic agents via CED is not without challenges. Limitations of distribution remain a problem in large brains, such as those of humans. Accurate and consistent delivery of an agent is another challenge associated with CED...
January 15, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/27927130/p311-accelerates-skin-wound-reepithelialization-by-promoting-epidermal-stem-cell-migration-through-rhoa-and-rac1-activation
#17
Zhihui Yao, Haisheng Li, Weifeng He, Sisi Yang, Xiaorong Zhang, Rixing Zhan, Rui Xu, Jianglin Tan, Junyi Zhou, Jun Wu, Gaoxing Luo
P311 is a newly discovered functional gene, and it has been proved to play a key role in blood pressure homeostasis, glioblastoma invasion, renal fibrosis, hypertrophic scar formation, and others. In this study, for the first time, we found that P311 could enhance reepithelialization during wound healing via promoting epidermal stem cell (EpSC) migration through Rho GTPases. P311 expression was highly increased in neo-epidermal cells during human and mouse skin wound healing, and P311was co-localized with 5-bromo-2'-deoxyuridine positive label-retaining cells in a mouse superficial second-degree burn wound model...
March 15, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/27857864/key-perspectives-on-auditory-outcomes-following-radiosurgery-for-vestibular-schwannoma-tumor-treating-fields-for-glioblastoma-and-a-proposed-myelopathy-score-for-cervical-decompression-surgery-intracranial-pressure-monitoring-in-diffuse-traumatic-brain-injury
#18
https://www.readbyqxmd.com/read/27854111/the-risk-of-hypotension-and-seizures-in-patients-receiving-prophylactic-anti-epileptic-drugs-for-supratentorial-craniotomy
#19
Julius Höhne, Karl M Schebesch, Christian Ott, Alexander Brawanski, Max Lange
BACKGROUND: Perioperative seizure prophylaxis with antiepileptic drugs (AED) has been advocated in patients undergoing supratentorial craniotomy. The practice remains controversial. The reasoning presupposes that the possibility of an adverse drug reaction from the AED is lower than the probability of harm from a seizure. Even short periods of hypotension during the operation can lead to acute kidney and myocardial injury. We retrospectively evaluated cardiovascular effects and tolerability of Levetiracetam (LEV) alone, LEV and Lacosamid (LCM) as compared to Phenytoin (PHT)...
November 17, 2016: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/27834803/advance-care-planning-in-glioblastoma-patients
#20
REVIEW
Lara Fritz, Linda Dirven, Jaap C Reijneveld, Johan A F Koekkoek, Anne M Stiggelbout, H Roeline W Pasman, Martin J B Taphoorn
Despite multimodal treatment with surgery, radiotherapy and chemotherapy, glioblastoma is an incurable disease with a poor prognosis. During the disease course, glioblastoma patients may experience progressive neurological deficits, symptoms of increased intracranial pressure such as drowsiness and headache, incontinence, seizures and progressive cognitive dysfunction. These patients not only have cancer, but also a progressive brain disease. This may seriously interfere with their ability to make their own decisions regarding treatment...
November 8, 2016: Cancers
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