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Brain tumor chemotherapy

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https://www.readbyqxmd.com/read/28635335/a-novel-synergetic-targeting-strategy-for-glioma-therapy-employing-borneol-combination-with-angiopep-2-modified-dox-loaded-pamam-dendrimer
#1
Shunping Han, Hongyue Zheng, Yanping Lu, Yue Sun, Anhao Huang, Weidong Fei, Xiaowei Shi, Xiuling Xu, Jingjing Li, Fanzhu Li
Glioma is the most common primary malignant brain tumor and the effect of chemotherapy is hampered by low permeability across the blood-brain-barrier (BBB). Borneol is a time-honored 'Guide' drug in traditional Chinese medicine and has been proved to be capable of promoting free drugs into the brain efficiently, but there are still risks that free drugs, especially anti-glioma drugs, may be disassembled and metabolized before penetrating the BBB and caused the whole brain distribution. The purpose of this paper was to investigate whether borneol intervention could facilitate the BBB penetration and assist glioma treatment by combining with doxorubicin (DOX) loaded PAMAM dendrimers drug delivery system modified with Angiopep-2 (a ligand of the low-density lipoprotein receptor-related protein, which overexpress both in the BBB and gliomas)...
June 21, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28634311/-bevacizumab-related-hyperintense-lesions-on-diffusion-weighted-imaging-at-different-locations-in-a-patient-with-malignant-glioma
#2
Shinya Oshiro, Naoki Wakuta, Shinichi Kawai, Koichi Miki, Yutaka Shigemori
We report the case of a 60-year-old man who first presented with transient difficulty of word recall. Subsequent MRI revealed an invasive brain tumor in the left frontal lobe. The patient underwent open biopsy, and diffuse astrocytoma(WHO grade II)was diagnosed. However, the malignant potential of this tumor was not particularly low because of a few enhancement on preoperative evaluation, and radiation therapy was initially performed. Four months after ending irradiation, temozolomide treatment was introduced for tumor regrowth...
June 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28634226/phostine-pst3-1a-targets-mgat5-and-inhibits-glioblastoma-initiating-cell-invasiveness-and-proliferation
#3
Zahra Hassani, Ali Saleh, Soumaya Turpault, Salim Khiati, Willy Morelle, Jacques Vignon, Jean-Philippe Hugnot, Emmanuelle Uro-Coste, Philippe Legrand, Marcel Delaforge, Séverine Loiseau, Ludovic Clarion, Marc Lecouvey, Jean-Noël Volle, David Virieux, Jean-Luc Pirat, Hugues Duffau, Norbert Bakalara
Glioblastoma multiforme (GBM) is the most common primary malignant brain tumor and accounts for a significant proportion of all primary brain tumors. Median survival after treatment is around 15 months. Remodeling of N-glycans by the N-acetylglucosamine glycosyltransferase (MGAT5) regulates tumoral development. Here, perturbation of MGAT5 enzymatic activity by the small-molecule inhibitor 3-Hydroxy-4,5-bis-benzyloxy-6-benzyloxymethyl-2-phenyl2-oxo-2λ5-[1,2]oxaphosphinane (PST3.1a) restrains GBM growth. In cell based assays it is demonstrated that PST3...
June 20, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28629521/erythropoietin-promotes-glioblastoma-via-mir-451-suppression
#4
Begum Alural, Zeynep O Ayyildiz, Kemal U Tufekci, Sermin Genc, Kursad Genc
Erythropoietin (EPO) is an erythropoiesis stimulating growth factor and hormone. EPO has been widely used in the treatment of chronic renal failure, cancer, and chemotherapy-related anemia for three decades. However, many clinical trials showed that EPO treatment may be associated with tumorigenesis and cancer progression. EPO is able to cross blood-brain barriers, and this may lead to an increased possibility of central nervous system tumors such as glioblastoma. Indeed, EPO promotes glioblastoma growth and invasion in animal studies...
2017: Vitamins and Hormones
https://www.readbyqxmd.com/read/28629376/radiation-therapy-for-older-patients-with-brain-tumors
#5
REVIEW
Giuseppe Minniti, Andrea Riccardo Filippi, Mattia Falchetto Osti, Umberto Ricardi
The incidence of brain tumors in the elderly population has increased over the last few decades. Current treatment includes surgery, radiotherapy and chemotherapy, but the optimal management of older patients with brain tumors remains a matter of debate, since aggressive radiation treatments in this population may be associated with high risks of neurological toxicity and deterioration of quality of life. For such patients, a careful clinical status assessment is mandatory both for clinical decision making and for designing randomized trials to adequately evaluate the optimal combination of radiotherapy and chemotherapy...
June 19, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28627598/curcumin-exerts-its-tumor-suppressive-function-via-inhibition-of-nedd4-oncoprotein-in-glioma-cancer-cells
#6
Xue Wang, Jiaojiao Deng, Jinxia Yuan, Xin Tang, Yuelong Wang, Haifeng Chen, Yi Liu, Liangxue Zhou
Glioblastoma is the most common brain cancer in adults. It represents one of the top ten malignant tumors with an average survival time of nine months despite treatments with surgery, radiotherapy and chemotherapy. Curcumin is a phytochemical turmeric isolated from root of the Curcuma longa plant. Accumulating evidence have proved that curcumin targets numerous cancer signaling pathways. The E3 ubiquitin ligase NEDD4, neural precursor cell expressed developmentally downregulated protein 4, is frequently overexpressed in various cancers...
June 8, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28626727/mast-cell-infiltration-in-human-brain-metastases-modulates-the-microenvironment-and-contributes-to-the-metastatic-potential
#7
Ananya Roy, Sylwia Libard, Holger Weishaupt, Ida Gustavsson, Lene Uhrbom, Göran Hesselager, Fredrik J Swartling, Fredrik Pontén, Irina Alafuzoff, Elena Tchougounova
Metastatic brain tumors continue to be a clinical problem, despite new therapeutic advances in cancer treatment. Brain metastases (BMs) are among the most common mass lesions in the brain that are resistant to chemotherapies, have a very poor prognosis, and currently lack any efficient diagnostic tests. Predictions estimate that about 40% of lung and breast cancer patients will develop BM. Despite this, very little is known about the immunological and genetic aberrations that drive tumorigenesis in BM. In this study, we demonstrate the infiltration of mast cells (MCs) in a large cohort of human BM samples with different tissues of origin for primary cancer...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28623754/quality-of-life-mood-and-seizure-control-in-patients-with-brain-tumor-related-epilepsy-treated-with-lacosamide-as-add-on-therapy-a-prospective-explorative-study-with-a-historical-control-group
#8
Marta Maschio, Alessia Zarabla, Andrea Maialetti, Alessandra Fabi, Antonello Vidiri, Veronica Villani, Diana Giannarelli
OBJECTIVE: Brain tumor-related epilepsy (BTRE) is often drug resistant and patients can be forced to take polytherapy that can adversely affect their quality of life (QoL). Lacosamide (LCM) is a new antiepileptic drug (AED) used as adjunctive therapy in patients with partial seizures with or without secondary generalization, with a favorable pharmacokinetic profile that seems to be effective and well tolerated. Therefore it represents a possible therapeutic choice for patients with BTRE...
June 14, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28623038/perfusion-kinetics-in-human-brain-tumor-with-dce-mri-derived-model-and-cfd-analysis
#9
A Bhandari, A Bansal, A Singh, N Sinha
Cancer is one of the leading causes of death all over the world. Among the strategies that are used for cancer treatment, the effectiveness of chemotherapy is often hindered by factors such as irregular and non-uniform uptake of drugs inside tumor. Thus, accurate prediction of drug transport and deposition inside tumor is crucial for increasing the effectiveness of chemotherapeutic treatment. In this study, a computational model of human brain tumor is developed that incorporates dynamic contrast enhanced-magnetic resonance imaging (DCE-MRI) data into a voxelized porous media model...
May 25, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28614779/the-effect-of-the-nitroxide-pirolin-on-oxidative-stress-induced-by-doxorubicin-and-taxanes-in-the-rat-brain
#10
S Tabaczar, J Czepas, A Koceva-Chyla, E Kilanczyk, J Piasecka-Zelga, K Gwozdzinski
The anticancer drugs doxorubicin (DOX), paclitaxel (PTX) and docetaxel (DTX) have been proven to induce oxidative stress (OS)-dependent side-effects in non-targeted tissues. In normal conditions, the blood-brain barrier (BBB) prevents these drugs from penetrating into the brain. However, some studies have demonstrated that small amounts of DOX can penetrate the brain via an oxidatively impaired BBB and cause damage, which suggests that including antioxidants in chemotherapy could possibly protect the brain against the toxicity of anticancer drugs...
April 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28612256/low-dose-of-doxorubicin-potentiates-the-effect-of-temozolomide-in-glioblastoma-cells
#11
Emilly Schlee Villodre, Franciele Cristina Kipper, Andrew Oliveira Silva, Guido Lenz, Patrícia Luciana da Costa Lopez
Glioblastoma (GBM) is an aggressive brain tumor with temozolomide (TMZ)-based chemotherapy as the main therapeutic strategy. Doxorubicin (DOX) is not used in gliomas due to its low bioavailability in the brain; however, new delivery strategies and low doses may be effective in the long term, especially as part of a drug cocktail. Our aim was to evaluate the chronic effects of low doses of DOX and TMZ in GBM. Human U87-ATCC cells and a primary GBM culture were chronically treated with TMZ (5 μM) and DOX (1 and 10 nM) alone or combined...
June 13, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28612247/-18-f-fluorothymidine-pet-imaging-in-gliomas-an-update
#12
Alexandra Nikaki, George Angelidis, Roxani Efthimiadou, Ioannis Tsougos, Varvara Valotassiou, Konstantinos Fountas, Vasileios Prasopoulos, Panagiotis Georgoulias
Brain neoplasms constitute a group of tumors with discrete differentiation grades, and therefore, course of disease and prognosis. Magnetic resonance imaging (MRI) remains the gold standard method for the investigation of central nervous system tumors. However, MRI suffers certain limitations, especially if radiation therapy or chemotherapy has been previously applied. On the other hand, given the development of newer radiopharmaceuticals, positron emission tomography (PET) aims to a better investigation of brain tumors, assisting in the clinical management of the patients...
June 13, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28612225/prolonged-survival-in-patients-with-breast-cancer-and-a-history-of-brain-metastases-results-of-a-preplanned-subgroup-analysis-from-the-randomized-phase-iii-beacon-trial
#13
Javier Cortés, Hope S Rugo, Ahmad Awada, Chris Twelves, Edith A Perez, Seock-Ah Im, Patricia Gómez-Pardo, Lee S Schwartzberg, Veronique Diéras, Denise A Yardley, David A Potter, Audrey Mailliez, Alvaro Moreno-Aspitia, Jin-Seok Ahn, Carol Zhao, Ute Hoch, Mary Tagliaferri, Alison L Hannah, Joyce O'Shaughnessy
PURPOSE: Conventional chemotherapy has limited activity in patients with breast cancer and brain metastases (BCBM). Etirinotecan pegol (EP), a novel long-acting topoisomerase-1 inhibitor, was designed using advanced polymer technology to preferentially accumulate in tumor tissue including brain metastases, providing sustained cytotoxic SN38 levels. METHODS: The phase 3 BEACON trial enrolled 852 women with heavily pretreated locally recurrent or metastatic breast cancer between 2011 and 2013...
June 13, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28605463/stereotactic-radiosurgery-and-hypofractionated-radiotherapy-for-glioblastoma
#14
Jennifer L Shah, Gordon Li, Jenny L Shaffer, Melissa I Azoulay, Iris C Gibbs, Seema Nagpal, Scott G Soltys
Glioblastoma is the most common primary brain tumor in adults. Standard therapy depends on patient age and performance status but principally involves surgical resection followed by a 6-wk course of radiation therapy given concurrently with temozolomide chemotherapy. Despite such treatment, prognosis remains poor, with a median survival of 16 mo. Challenges in achieving local control, maintaining quality of life, and limiting toxicity plague treatment strategies for this disease. Radiotherapy dose intensification through hypofractionation and stereotactic radiosurgery is a promising strategy that has been explored to meet these challenges...
June 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28602779/ceritinib-versus-chemotherapy-in-patients-with-alk-rearranged-non-small-cell-lung-cancer-previously-given-chemotherapy-and-crizotinib-ascend-5-a-randomised-controlled-open-label-phase-3-trial
#15
Alice T Shaw, Tae Min Kim, Lucio Crinò, Cesare Gridelli, Katsuyuki Kiura, Geoffrey Liu, Silvia Novello, Alessandra Bearz, Oliver Gautschi, Tony Mok, Makoto Nishio, Giorgio Scagliotti, David R Spigel, Stéphanie Deudon, Cheng Zheng, Serafino Pantano, Patrick Urban, Cristian Massacesi, Kalyanee Viraswami-Appanna, Enriqueta Felip
BACKGROUND: Ceritinib is a next-generation anaplastic lymphoma kinase (ALK) inhibitor, which has shown robust anti-tumour efficacy, along with intracranial activity, in patients with ALK-rearranged non-small-cell lung cancer. In phase 1 and 2 studies, ceritinib has been shown to be highly active in both ALK inhibitor-naive and ALK inhibitor-pretreated patients who had progressed after chemotherapy (mostly multiple lines). In this study, we compared the efficacy and safety of ceritinib versus single-agent chemotherapy in patients with advanced ALK-rearranged non-small-cell lung cancer who had previously progressed following crizotinib and platinum-based doublet chemotherapy...
June 8, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28600528/overexpression-of-rasd1-inhibits-glioma-cell-migration-invasion-and-inactivates-the-akt-mtor-signaling-pathway
#16
Shangfeng Gao, Lei Jin, Guangping Liu, Peng Wang, Zonghan Sun, Yujia Cao, Hengliang Shi, Xuejiao Liu, Qiong Shi, Xiuping Zhou, Rutong Yu
The RAS signaling pathway is hyperactive in malignant glioma due to overexpression and/or increased activity. A previous study identified that RASD1, a member of the RAS superfamily of small G-proteins, is a significantly dysregulated gene in oligodendroglial tumors that responded to chemotherapy. However, the role and mechanism of RASD1 in the progression of human glioma remain largely unknown. In the present study, by analyzing a public genomics database, we found that high levels of RASD1 predicted good survival of astrocytoma patients...
June 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28600472/precision-medicine-in-pediatric-oncology-translating-genomic-discoveries-into-optimized-therapies
#17
Thai Hoa Tran, Avanthi Tayi Shah, Mignon L Loh
Survival of children with cancers has dramatically improved over the past several decades.  This success has been achieved through improvement of combined modalities in treatment approaches, intensification of cytotoxic chemotherapy for those with high-risk disease and refinement of risk stratification incorporating novel biologic markers in addition to traditional clinical and histologic features. Advances in cancer genomics have shed important mechanistic insights on disease biology and have identified "driver" genomic alterations, aberrant activation of signaling pathways, and epigenetic modifiers that can be targeted by novel agents...
June 9, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28599984/prevention-and-management-of-postoperative-seizures-in-neuro-oncology
#18
F Chassoux, E Landre
INTRODUCTION: Epilepsy related to brain tumors is often difficult to treat and may impact the quality of life. We performed a review of current recommendations for the prevention of postoperative seizures and optimizing the anti-epileptic treatment. MATERIAL AND METHODS: Based on studies performed since 2000 we conducted the review by (1) analyzing the incidence of tumoral epilepsy and mechanisms of epileptogenicity; (2) describing the current medical and surgical strategy according to oncologic treatments; (3) discussing the management of postoperative seizures; (4) considering the drug withdrawal after oncologic therapy...
June 6, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28599959/photodynamic-process-induced-by-chloro-aluminum-phthalocyanine-nanoemulsion-in-glioblastoma
#19
Andrielle Castilho-Fernandes, Tácila G Lopes, Fernando L Primo, Marcelo R Pinto, Antonio C Tedesco
BACKGROUND: Glioblastoma multiforme (GBM) is a tumor characterized by rapid cell proliferation and migration. GBM constitutes the most aggressive and deadly type of brain tumor and is classified into several subtypes that show high resistance to conventional therapies. There are currently no curative treatments for malignant glioma despite the numerous advances in surgical techniques, radiotherapy, and chemotherapy. Therefore, alternative approaches are required to improve GBM treatment...
June 6, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28598565/atypical-teratoid-rhabdoid-tumors-in-children-treated-with-multimodal-therapies-the-necessity-of-upfront-radiotherapy-after-surgery
#20
Jeongshim Lee, Dong-Seok Kim, Jung Woo Han, Chang-Ok Suh
BACKGROUND: Atypical teratoid/rhabdoid tumor (ATRT) is a rare malignant pediatric brain tumor with a dismal prognosis. We evaluated the efficacy of multimodal therapy in children with ATRT. PROCEDURE: Nine children diagnosed with cranial ATRT, who received multimodal therapy between 2005 and 2014, including surgical resection followed by radiotherapy (RT), systemic chemotherapy (CT), and high-dose chemotherapy/stem cell transplantation (HDCT/SCT), were analyzed retrospectively...
June 9, 2017: Pediatric Blood & Cancer
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