keyword
MENU ▼
Read by QxMD icon Read
search

Brain tumor recurrence

keyword
https://www.readbyqxmd.com/read/29456350/recurrent-glioblastomas-exhibit-higher-expression-of-biomarkers-with-stem-like-properties
#1
B N Nandeesh, Sharmistha Naskar, Arun H Shashtri, A Arivazhagan, Vani Santosh
Background: Despite advances in the treatment of glioblastoma (GBM), the prognosis of patients continues to remain dismal. This unfavorable prognosis is mainly attributed to the tumor's propensity for progression and recurrence, which in turn is due to the highly aggressive nature of the persisting GBM cells that actively egress from the main tumor mass into the surrounding normal brain tissue. Such a recurrent tumor described to have a more malignant potential is highly invasive and resistant to current therapies, probably due to increased stemness and preferential selection of therapy-resistant clones of tumor cells...
January 2018: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/29454008/temozolomide-affects-extracellular-vesicles-released-by-glioblastoma-cells
#2
Gwennan André-Grégoire, Nicolas Bidère, Julie Gavard
Glioblastoma multiforme (GBM) is the most aggressive primary tumour within the brain as well as the most common and lethal cerebral cancer, mainly because of treatment failure. Indeed, tumour recurrence is inevitable and fatal in a short period of time. Glioblastoma stem-like cells (GSCs) are thought to participate in tumour initiation, expansion, resistance to treatments, including to the alkylating chemotherapeutic agent temozolomide, and relapse. Here, we assessed whether extracellular vesicles (EVs) released by GSCs could disseminate factors involved in resistance mechanisms...
February 14, 2018: Biochimie
https://www.readbyqxmd.com/read/29453166/skull-metastasis-revealing-a-renal-tumor-a-case-report-and-review-of-the-literature
#3
Mohamed Badri, Ghassen Gader, Kamel Bahri, Ihsen Zammel
BACKGROUND: Renal cell carcinomas represent 85% of malignant renal tumors. Typically, the tumor remains asymptomatic a long time before the appearance of urologic clinical signs. In some cases, metastasis can precede the manifestations of the primary tumor. Different sites are potential metastatic localizations for renal tumors, including skull metastases who represent a very rare location. CASE DESCRIPTION: We report the case of a 65-year-old man presented after the appearance of a skull mass...
February 10, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29450812/renin-angiotensin-system-and-its-role-in-biomarkers-and-treatment-in-gliomas
#4
REVIEW
Alexander Perdomo-Pantoja, Sonia Iliana Mejía-Pérez, Liliana Gómez-Flores-Ramos, Montserrat Lara-Velazquez, Cordelia Orillac, Juan Luis Gómez-Amador, Talia Wegman-Ostrosky
Gliomas are the most common primary intrinsic tumor in the brain and are classified as low- or high-grade according to the World Health Organization (WHO). Patients with high-grade gliomas (HGG) who undergo surgical resection with adjuvant therapy have a mean overall survival of 15 months and 100% recurrence. The renin-angiotensin system (RAS), the primary regulator of cardiovascular circulation, exhibits local action and works as a paracrine system. In the context of this local regulation, the expression of RAS peptides and receptors has been detected in different kinds of tumors, including gliomas...
February 16, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29449895/dnm3-p65-and-p53-from-exosomes-represent-potential-clinical-diagnosis-markers-for-glioblastoma-multiforme
#5
Jian-Kai Yang, Jian Song, Hao-Ran Huo, Yin-Long Zhao, Guang-Yu Zhang, Zong-Mao Zhao, Guo-Zhu Sun, Bao-Hua Jiao
Background: Glioblastoma multiforme (GBM) is the most aggressive and deadly primary brain cancer that arises from astrocytes and classified as grade IV. Recently, exosomes have been reported as an essential mediator in diverse cancer carcinogenesis and metastasis. However, their role in GBM is still unclear. In this study, we aimed to investigate whether blood exosomes can be potential clinical diagnostic markers for GBM. Methods: We used a xenograft orthotopic mouse model to detect the differentially expressed genes in the brain and blood exosomes of original/recurrent GBM...
December 2017: Therapeutic Advances in Medical Oncology
https://www.readbyqxmd.com/read/29449515/-therapeutic-effects-of-low-dose-bevacizumab-for-the-treatment-of-recurrent-brain-metastases
#6
Etsuko Hattori, Akinori Miyakoshi, Kohichi Go, Toshiharu Aotake, Yoshiyuki Kawakami, Masato Sakamoto, Takeshi Kawauchi, Yuuki Oichi, Noritaka Sano, Makoto Hayase, Makoto Ohta, Yuki Hirose, Hiroki Toda
OBJECTIVE: Molecularly targeted therapy has been adopted to treat a number of cancers. Bevacizumab, a recombinant humanized monoclonal antibody against vascular endothelial growth factor, is a representative agent used in molecularly targeted therapeutic regimens. However, the therapeutic effect of bevacizumab for the treatment of brain metastases remains unknown. We report the clinical effects of low dose bevacizumab(≤2.5mg/kg/week)to treat recurrent brain metastases. METHODS: We retrospectively analyzed patients with brain metastases who had been treated with bevacizumab between 2012 and 2016 at our institution...
February 2018: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/29443896/dexamethasone-mediated-upregulation-of-calreticulin-inhibits-primary-human-glioblastoma-dispersal-ex-vivo
#7
Mohan Nair, Juan Romero, Aria Mahtabfar, Ahmed M Meleis, Ramsey A Foty, Siobhan A Corbett
Dispersal of Glioblastoma (GBM) renders localized therapy ineffective and is a major cause of recurrence. Previous studies have demonstrated that Dexamethasone (Dex), a drug currently used to treat brain tumor-related edema, can also significantly reduce dispersal of human primary GBM cells from neurospheres. It does so by triggering α5 integrin activity, leading to restoration of fibronectin matrix assembly (FNMA), increased neurosphere cohesion, and reduction of neurosphere dispersal velocity (DV). How Dex specifically activates α5 integrin in these GBM lines is unknown...
February 14, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29441072/fatal-necrotizing-encephalopathy-after-treatment-with-nivolumab-for-squamous-non-small-cell-lung-cancer-case-report-and-review-of-the-literature
#8
Markus Leitinger, Mihael V Varosanec, Slaven Pikija, Romana E Wass, Dave Bandke, Serge Weis, Michael Studnicka, Susanne Grinzinger, Mark R McCoy, Larissa Hauer, Johann Sellner
Immune checkpoint inhibitors are antibodies, which enhance cellular and humoral immune responses and are approved for the treatment of various tumors. Immune-related adverse events (irAE) involving different organs and systems are, however, among the side-effects. Recent reports of severe persistent neurological deficits and even fatal cases underpin the need for better understanding of the exact pathomechanisms of central nervous system (CNS) toxicity. To our knowledge, we report the first biopsy-proven case of fatal necrotizing encephalopathy after treatment with nivolumab...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29440289/neo212-inhibits-migration-and-invasion-of-glioma-stem-cells
#9
Nagore I Marín-Ramos, Thu Zan Thein, Hee-Yeon Cho, Stephen D Swenson, Weijun Wang, Axel H Schönthal, Thomas C Chen, Florence M Hofman
Glioblastoma multiforme is a malignant brain tumor noted for its extensive vascularity, aggressiveness, and highly invasive nature, suggesting that cell migration plays an important role in tumor progression. The poor prognosis in GBM is associated with a high rate of tumor recurrence, and resistance to the standard of care chemotherapy, temozolomide (TMZ). The novel compound NEO212, a conjugate of TMZ and perillyl alcohol (POH), has proven to be 10 fold more cytotoxic to glioma stem cells (GSCs) than TMZ, and is active against TMZ-resistant tumor cells...
February 13, 2018: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29440180/resistance-promoting-effects-of-ependymoma-treatment-revealed-through-genomic-analysis-of-multiple-recurrences-in-a-single-patient
#10
Christopher A Miller, Sonika Dahiya, Tiandao Li, Robert Fulton, Matthew D Smyth, Gavin P Dunn, Joshua B Rubin, Elaine R Mardis
BACKGROUND: As in other brain tumors, multiple recurrences after complete resection and irradiation of supratentorial ependymoma are common and frequently result in patient death. This standard-of-care treatment was established in the pre-genomic era without the ability to evaluate the effect that mutagenic therapies may exert on tumor evolution and in promoting resistance, recurrence, and death. We seized a rare opportunity to characterize treatment effects and the evolution of a single patient's ependymoma across four recurrences after different therapies...
February 13, 2018: Cold Spring Harbor Molecular Case Studies
https://www.readbyqxmd.com/read/29438510/diagnostic-accuracy-of-2-hydroxyglutarate-magnetic-resonance-spectroscopy-in-newly-diagnosed-brain-mass-and-suspected-recurrent-gliomas
#11
Min Zhou, Yue Zhou, Huijun Liao, Benjamin C Rowland, Xiangquan Kong, Nils D Arvold, David A Reardon, Patrick Y Wen, Alexander P Lin, Raymond Y Huang
Background: Isocitrate dehydrogenase (IDH) mutations result in abnormal accumulation of 2-hydroxyglutarate (2HG) in gliomas that can be detected by MRS. We examined the diagnostic accuracy of 2HG single-voxel spectroscopy (SVS) and chemical shift imaging (CSI) in both newly-diagnosed and post-treatment settings. Methods: Long-TE (97 ms) SVS and CSI were acquired in 85 subjects, including a discovery cohort of 39 patients who had postoperative residual or recurrent glioma with confirmed IDH-mutation status and 6 normal volunteers, a prospective preoperative validation cohort of 24 patients with newly-diagnosed brain mass, and a prospective recurrent-lesion validation cohort of 16 previously-treated IDH-mutant glioma patients with suspected tumor recurrence...
February 9, 2018: Neuro-oncology
https://www.readbyqxmd.com/read/29436645/ouabain-suppresses-the-growth-and-migration-abilities-of-glioma-u%C3%A2-87mg-cells-through-inhibiting-the-akt-mtor-signaling-pathway-and-downregulating-the-expression-of-hif%C3%A2-1%C3%AE
#12
Xiao-Sa Yang, Zhong-Wei Xu, Tai-Long Yi, Rui-Cheng Xu, Jie Li, Wen-Bin Zhang, Sai Zhang, Hong-Tao Sun, Ze-Qi Yu, Hao-Xiang Xu, Yue Tu, Shi-Xiang Cheng
Glioma is one of the most malignant forms of brain tumor, and has been of persistent concern due to its high recurrence and mortality rates, and limited therapeutic options. As a cardiac glycoside, ouabain has widespread applications in congestive heart diseases due to its positive cardiac inotropic effect by inhibiting Na+/K+‑ATPase. Previous studies have demonstrated that ouabain has antitumor activity in several types of human tumor, including glioma. However, the exact underlying mechanism remains to be elucidated...
February 12, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29432615/glioma-through-the-looking-glass-molecular-evolution-of-diffuse-gliomas-and-the-glioma-longitudinal-analysis-consortium
#13
Kenneth Aldape, Samirkumar B Amin, David M Ashley, Jill S Barnholtz-Sloan, Amanda J Bates, Rameen Beroukhim, Christoph Bock, Daniel J Brat, Elizabeth B Claus, Joseph F Costello, John F de Groot, Gaetano Finocchiaro, Pim J French, Hui K Gan, Brent Griffith, Christel C Herold-Mende, Craig Horbinski, Antonio Iavarone, Steven N Kalkanis, Konstantina Karabatsou, Hoon Kim, Mathilde C M Kouwenhoven, Kerrie L McDonald, Hrvoje Miletic, Do-Hyun Nam, Ho Keung Ng, Simone P Niclou, Houtan Noushmehr, Ryan Ormond, Laila M Poisson, Guido Reifenberger, Federico Roncaroli, Jason K Sa, Peter A E Sillevis Smitt, Marion Smits, Camila F Souza, Ghazaleh Tabatabai, Erwin G Van Meir, Roel G W Verhaak, Colin Watts, Pieter Wesseling, Adelheid Woehrer, W K Alfred Yung, Christine Jungk, Ann-Christin Hau, Eric van Dyck, Bart A Westerman, Julia Yin, Olajide Abiola, Nikolaj Zeps, Sean Grimmond, Michael Buckland, Mustafa Khasraw, Erik P Sulman, Andrea M Muscat, Lucy Stead
Adult diffuse gliomas are a diverse group of brain neoplasms that inflict a high emotional toll on patients and their families. The Cancer Genome Atlas (TCGA) and similar projects have provided a comprehensive understanding of the somatic alterations and molecular subtypes of glioma at diagnosis. However, gliomas undergo significant cellular and molecular evolution during disease progression. We review the current knowledge on the genomic and epigenetic abnormalities in primary tumors and after disease recurrence, highlight the gaps in the literature, and elaborate on the need for a new multi-institutional effort to bridge these knowledge gaps and how the Glioma Longitudinal AnalySiS Consortium (GLASS) aims to systemically catalog the longitudinal changes in gliomas...
February 8, 2018: Neuro-oncology
https://www.readbyqxmd.com/read/29432558/models-of-epigenetic-age-capture-patterns-of-dna-methylation-in-glioma-associated-with-molecular-subtype-survival-and-recurrence
#14
Peter Liao, Quinn T Ostrom, Lindsay Stetson, Jill S Barnholtz-Sloan
Background: Models of epigenetic aging (epigenetic clocks) have been implicated as potentially useful markers for cancer risk and prognosis. Using two previously published methods for modeling epigenetic age, Horvath's clock and epiTOC, we investigated epigenetic aging patterns related to WHO grade and molecular subtype as well as associations of epigenetic aging with glioma survival and recurrence. Methods: Epigenetic ages were calculated using Horvath's clock and epiTOC on 516 lower grade glioma and 141 glioblastoma cases along with 136 non-tumor (normal) brain samples...
February 8, 2018: Neuro-oncology
https://www.readbyqxmd.com/read/29432312/survival-following-tumor-recurrence-in-children-with-medulloblastoma
#15
Donna L Johnston, Daniel Keene, Douglas Strother, Maria Taneva, Lucie Lafay-Cousin, Chris Fryer, Katrin Scheinemann, Anne-Sophie Carret, Adam Fleming, Samina Afzal, Beverly Wilson, Lynette Bowes, Shayna Zelcer, Chris Mpofu, Mariana Silva, Valerie Larouche, Josee Brossard, Eric Bouffet
Medulloblastoma is the most common malignant brain tumor in children. Published survival rates for this tumor are ∼70%; however, there is limited published information on outcome after disease recurrence. This was an observational study which included all persons under the age of 18 years diagnosed with medulloblastoma from 1990 to 2009 inclusive in Canada. Data collected included date of diagnosis, age at diagnosis, sex, stage, pathology, treatment, recurrence, and current status. Survival rates were determined...
February 9, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29432310/a-congenital-case-of-ependymoblastoma-a-rare-and-aggressive-brain-tumor
#16
Courtney D Grassham, Sara Rady, Kimberly Foster, Karen S SantaCruz, John F Kuttesch, Jessie R Maxwell
Congenital brain tumors are rare, representing <2% of all childhood brain tumors. Of these, ependymoblastoma is a profoundly aggressive embryonal brain tumor that is included in the diagnostic entity known as an embryonal tumor with multilayered rosettes. This report of a congenital ependymoblastoma diagnosed at birth aims to highlight how much remains unknown about embryonal tumor with multilayered rosettes and the devastating prognosis of this condition. Despite recent advancements made in identifying molecular targets for therapy, this tumor continues to have a high rate of recurrence with few successful treatment options, especially when diagnosed in the newborn period...
February 9, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29430328/-invasive-sinonasal-papilloma-with-intracranial-invasion-case-report-and-bibliographic-review
#17
Andrés Di Pietrantonio, Humberto Asmus, Christian Ingratta, Walter Brennan, Javier Schulz, Leandro Carballo
Introduction: Inverted papilloma is a locally-aggressive benign neoplasm of the paranasal sinuses with a high potential for recurrence and malignancy. Intracranial extension is infrequent, and dural penetration even more so, typically associated with recurrence of the disease or its degeneration into squamous cell carcinoma. Clinical Case: A 32-year-old female patient consulted us for an exophytic lesion in her right nostril and exophthalmos, associated with headache, anosmia and dysgeusia...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29429648/the-usefulness-of-fibrin-glue-as-a-support-in-the-dissection-of-malignant-cystic-brain-tumors
#18
J Todeschi, Y Pin, F Lersy, F Séverac, I Ollivier, S Kremer, F Proust, H Cebula
BACKGROUND: If the complete microsurgical resection of a brain tumor is a logical oncologic goal, the surgical strategy for the cystic component remains controversial secondary to the risk of morbidity. The objective of this study was to analyze the interest of using fibrin glue in the resection of malignant cystic brain tumors (MCBT). METHODS: Seven patients (median: 60-years-old (range [52-72]/sex ratio M/F: 2.5) were analyzed prospectively in the Neurosurgery Department at Strasbourg University Hospital, from October 2014 to November 2016...
February 8, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29425709/intracranial-rat-glioma-model-for-tumor-resection-and-local-treatment
#19
Zhiqun Wu, Makoto Nakamura, Joachim K Krauss, Kerstin Schwabe, Nadine John
BACKGROUND: Although tumor resection is among the most important prognostic factors, high grade gliomas regrow in most cases. Also, resection of glial tumors in eloquent brain regions is not or only partially possible. Despite these severe restraints, however, only a few in-vivo models have been established to investigate tumor recurrence and local treatment. Here we characterize the intracranial BT4Ca rat glioma as a model for these aspects. NEW METHOD: BT4Ca cells were stereotaxically implanted into the frontal cortex of BDIX rats...
February 6, 2018: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29424334/reactive-gliosis-mimicking-tumor-recurrence-a-case-series-documenting-mri-abnormalities-and-neuropathological-correlates
#20
Hugh Kearney, Jane Cryan, Alan Beausung, Seamus Looby, Francesca M Brett
The aim of this study is to identify, in our center, all cases of foreign-body reactions to hemostatic agents or other prostheses resulting in a radiological suspicion of tumor recurrence. We interrogated our internal database to identify all such cases and systematically evaluated the MRI brain scans of patients: (i) at the time of initial tumor diagnosis, (ii) postoperatively, (iii) and at the time of suspected tumor recurrence. In addition, we reviewed each patient's operative notes and reviewed the histology of all cases following a second surgical intervention...
February 9, 2018: Clinical Neuropathology
keyword
keyword
23630
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"