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Brain tumor research

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https://www.readbyqxmd.com/read/28421464/a-novel-tp53-mutation-associated-with-twist1-and-sip1-expression-in-an-aggressive-adrenocortical-carcinoma
#1
Daniel Bulzico, Davi Coe Torres, Gerson Moura Ferreira, Bruno Ricardo Barreto Pires, Paulo Antônio Silvestre de Faria, Rocio Hassan, Eliana Abdelhay, Mario Vaisman, Leonardo Vieira Neto
Adrenocortical carcinomas (ACC) are very rare tumors related to TP53 mutations mostly in childhood onset cases. Epithelial-mesenchymal transition (EMT) transcription factors TWIST1 and Smad interacting protein 1 (SIP1) are related to poorer outcomes in other malignancies, but their role in ACC is unknown. We describe a case of an advanced metastatic ACC (Weiss-score of 9) in a patient at age 76. After primary tumor resection, mitotane therapy was started as palliation to low-volume liver metastasis. After a 2-year period of stable disease, the patient died due to brain metastasis...
April 18, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28420297/the-social-trajectory-of-brain-tumor-a-qualitative-metasynthesis
#2
Lee Cubis, Tamara Ownsworth, Mark B Pinkham, Suzanne Chambers
PURPOSE: Research indicates that strong social ties can buffer the adverse effects of chronic illness on psychological well-being. Brain tumor typically leads to serious functional impairments that affect relationships and reduce social participation. This metasynthesis aimed to identify, appraise and integrate the findings of qualitative studies that reveal the impact of brain tumor on social networks. METHODS: Four major databases (PubMed, CINAHL, Cochrane Library and PsycINFO) were systematically searched from inception to September 2016 for qualitative studies that reported findings on the impact of primary brain tumor on social networks during adulthood...
April 19, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28419308/brain-invasion-in-meningiomas-clinical-considerations-and-impact-of-neuropathological-evaluation-a-systematic-review
#3
Benjamin Brokinkel, Katharina Hess, Christian Mawrin
With the release of the 2016 edition of the WHO Classification of Central Nervous System tumors, brain invasion in meningiomas has been added as a stand-alone criterion for atypia and can therefore impact grading and indirectly adjuvant therapy. Regarding this rising clinical importance, we have reviewed the current knowledge about brain invasion with emphasis on its implications on current and future clinical practice. We found various definitions of brain invasion and approaches for evaluation in surgically obtained specimen described over the past decades...
April 17, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28419189/propensity-scores-with-misclassified-treatment-assignment-a-likelihood-based-adjustment
#4
Danielle Braun, Malka Gorfine, Giovanni Parmigiani, Nils D Arvold, Francesca Dominici, Corwin Zigler
Propensity score methods are widely used in comparative effectiveness research using claims data. In this context, the inaccuracy of procedural or billing codes in claims data frequently misclassifies patients into treatment groups, that is, the treatment assignment ($T$) is often measured with error. In the context of a validation data where treatment assignment is accurate, we show that misclassification of treatment assignment can impact three distinct stages of a propensity score analysis: (i) propensity score estimation; (ii) propensity score implementation; and (iii) outcome analysis conducted conditional on the estimated propensity score and its implementation...
April 17, 2017: Biostatistics
https://www.readbyqxmd.com/read/28413648/effects-of-hyperbaric-oxygen-treatment-on-gastric-cancer-cell-line-sgc7901
#5
Yinliang Qi, Jianfeng Ruan, Mei Wang, Yuanchang Dai, Qing Zhou, Shuyu Gui, Sumei Zhang, Yuan Wang
Hyperbaric oxygen (HBO) has been previously identified as an effective adjunct treatment option for the management of brain injury, diabetic ulcers and chronic wounds. However, the roles of HBO as an adjunctive therapy for tumors remain controversial. The present research project was performed to explore the effects of HBO treatment on proliferation, autophagy and endoplasmic reticulum stress response of the gastric cancer cell line, SGC7901. The present study demonstrated that, after subjecting SGC7901 cells to HBO treatment, the increase in cell proliferation was significant, compared with that of the control group...
April 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28412512/addressing-the-selective-role-of-distinct-prefrontal-areas-in-response-suppression-a-study-with-brain-tumor-patients
#6
Sandra Arbula, Valentina Pacella, Serena De Pellegrin, Marta Rossetto, Luca Denaro, Domenico D'Avella, Alessandro Della Puppa, Antonino Vallesi
The diverging evidence for functional localization of response inhibition within the prefrontal cortex might be justified by the still unclear involvement of other intrinsically related cognitive processes like response selection and sustained attention. In this study, the main aim was to understand whether inhibitory impairments, previously found in patients with both left and right frontal lesions, could be better accounted for by assessing these potentially related cognitive processes. We tested 37 brain tumor patients with left prefrontal, right prefrontal and non-prefrontal lesions and a healthy control group on Go/No-Go and Foreperiod tasks...
April 12, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28405535/signet-cell-in-the-brain-a-case-report-of-leptomeningeal-carcinomatosis-as-the-presenting-feature-of-gastric-signet-cell-cancer
#7
Saeed Ali, Muhammad Talha Khan, Evgeny A Idrisov, Aadil Maqsood, Fnu Asad-Ur-Rahman, Khalid Abusaada
Malignant infiltration of pia and arachnoid mater, referred to as leptomeningeal carcinomatosis (LMC), is a rare complication of gastric carcinoma. The most common underlying malignancy in patients with LMC are leukemia, breast cancer, lymphoma, and lung cancer. We report a case of gastric adenocarcinoma that presented with LMC in the absence of overt gastrointestinal signs or symptoms. A 56-year-old Hispanic woman presented to the hospital with a three-week history of intermittent headaches and visual blurring...
March 7, 2017: Curēus
https://www.readbyqxmd.com/read/28405533/scalp-seeding-post-craniotomy-and-radiosurgery-for-solitary-brain-metastasis-a-case-report-and-systematic-review
#8
Waseem Sharieff, Liam Mulroy, Adrienne Weeks, Samina Mansoor, Rajbir Pahil, Muhammad U Islam
BACKGROUND  : Radiosurgery is being increasingly used post craniotomy for brain metastasis, instead of whole-brain radiation. We report a case of scalp metastasis following craniotomy and radiosurgery, along with a systematic review of the literature. METHODS        : Our patient was a 70-year-old male who presented with a scalp metastasis, two years after craniotomy and radiosurgery, for a solitary brain metastasis from esophageal carcinoma. Using Medline® (United States National Library of Medicine, Bethesda, MD), we performed a systematic review of the literature to identify cases of isolated scalp metastases following craniotomy for brain lesions...
March 7, 2017: Curēus
https://www.readbyqxmd.com/read/28397504/-chemotherapy-related-cognitive-impairment-in-patients-with-hodgkin-lymphoma-pathophysiology-and-risk-factors
#9
D Fayette, Ľ Gahérová, H Móciková, J Marková, T Kozák, J Horáček
BACKGROUND: Cognitive impairment (impairment of memory, attention, or concentration) is documented in 17-75% of patients with various malignancies treated with chemotherapeutic agents that worsen quality of life. CRCI affects patients of all ages. The impairment of cognitive function in connection with chemotherapy is usually mild, but an event. relationship with dementia remains to be confirmed. Chemotherapy in combination with radiotherapy in Hodgkin lymphoma can cure 80-90% of patients...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28390902/design-of-y-shaped-targeting-material-for-liposome-based-multifunctional-glioblastoma-targeted-drug-delivery
#10
Zakia Belhadj, Man Ying, Xie Cao, Xuefeng Hu, Changyou Zhan, Xiaoli Wei, Jie Gao, Xiaoyi Wang, Zhiqiang Yan, Weiyue Lu
Since the treatment of glioma in clinic has been hindered by the blood-brain barrier (BBB) and blood-brain tumor barrier (BBTB), multifunctional glioma-targeted drug delivery systems that can circumvent both barriers have received increasing scrutiny. Despite recent research efforts have been made to develop multifunctional glioma-targeted liposomes by decorating two or more ligands, few successful trials have been achieved due to the limitation of ligand density on the surface of liposomes. In this study, we designed a Y-shaped multifunctional targeting material c(RGDyK)-pHA-PEG-DSPE, in which cyclic RGD (c(RGDyK)) and p-hydroxybenzoic acid (pHA) were linked with a short spacer...
April 5, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28389997/tumor-vaccines-for-malignant-gliomas
#11
REVIEW
Visish M Srinivasan, Sherise D Ferguson, Sungho Lee, Shiao-Pei Weathers, Brittany C Parker Kerrigan, Amy B Heimberger
Despite continued research efforts, glioblastoma multiforme (GBM) remains the deadliest brain tumor. Immunotherapy offers a novel way to treat this disease, the genetic signature of which is not completely elucidated. Additionally, these tumors are known to induce immunosuppression in the surrounding tumor microenvironment via an array of mechanisms, making effective treatment all the more difficult. The immunotherapeutic strategy of using tumor vaccines offers a way to harness the activity of the host immune system to potentially control tumor progression...
April 7, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28388955/blocking-the-pd-1-pd-l1-pathway-in-glioma-a-potential-new-treatment-strategy
#12
REVIEW
Song Xue, Man Hu, Veena Iyer, Jinming Yu
Gliomas are the most common type of primary brain tumor in adults. High-grade neoplasms are associated with poor prognoses, whereas low-grade neoplasms are associated with 5-year overall survival rates of approximately 85%. Despite considerable progress in treatment modalities, the outcomes remain dismal. As is the case with many other tumors, gliomas express or secrete several immunosuppressive molecules that regulate immune cell function. Programmed death-ligand 1 (PD-L1) is a coinhibitory ligand that is predominantly expressed by tumor cells...
April 7, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28382397/does-scope-of-practice-correlate-with-the-outcomes-of-craniotomy-for-tumor-resection-in-children
#13
Symeon Missios, Kimon Bekelis
BACKGROUND: The relationship of scope of practice (predominantly adult, versus predominantly pediatric) with the outcomes of brain tumor surgery in children remains uncertain. We investigated the association of practice focus with the outcomes of neurosurgical oncology operations in pediatric patients. METHODS: We performed a cohort study of all pediatric patients (younger than 18 years old) who underwent craniotomies for tumor resections from 2009 to 2013 and were registered in the Statewide Planning and Research Cooperative System (SPARCS) database...
April 5, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28380454/comparative-study-of-joint-bioinformatics-analysis-of-underlying-potential-of-neurimmir-mir-212-3p-mir-132-3p-being-involved-in-epilepsy-and-its-emerging-role-in-human-cancer
#14
Lu Xia, Daojiang Li, Changwei Lin, Shuchun Ou, Xiaorong Li, Songqing Pan
Considering the critical roles of miR-132/212 participated in central nervous system, many researches started to explored the contributions of miR-132/212 to epilepsy and achieve something worthwhile. Further illuminates all the genes targeted by miR-132/212 may be a valuable means for us to completely understand the working mechanism playing in epilepsy, by which it can influence diverse biological process. This study attempts to establish macrocontrol regulation system and knowledge that miR-212-3p/132-3p effected the epilepsy, for this literature search, miRbase, Vienna RNAfold webserver, Human miRNA tissue atlas, DIANA-TarBase, miRtarbase, STRING, TargetScanhuman, Cytoscape plugin ClueGO + Cluepedia+STRING, DAVID Bioinformatics Resources, Starbase, GeneCards suite and GEO database are comprehensive employed, miR-132-3p/212-3p and its target gene were found have highly expressed in brain and lots of molecular function and metabolic pathways associated with epilepsy may be intervened by it...
March 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28378621/response-of-the-cerebral-vasculature-following-traumatic-brain-injury
#15
Arjang Salehi, John H Zhang, Andre Obenaus
The critical role of the vasculature and its repair in neurological disease states is beginning to emerge particularly for stroke, dementia, epilepsy, Parkinson's disease, tumors and others. However, little attention has been focused on how the cerebral vasculature responds following traumatic brain injury (TBI). TBI often results in significant injury to the vasculature in the brain with subsequent cerebral hypoperfusion, ischemia, hypoxia, hemorrhage, blood-brain barrier disruption and edema. The sequalae that follow TBI result in neurological dysfunction across a host of physiological and psychological domains...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28377717/biomarkers-associated-with-cognitive-impairment-in-treated-cancer-patients-potential-predisposition-and-risk-factors
#16
REVIEW
Hélène Castel, Angeline Denouel, Marie Lange, Marie-Christine Tonon, Martine Dubois, Florence Joly
Purpose: Cognitive impairment in cancer patients induced, at least in part, by treatment are frequently observed and likely have negative impacts on patient quality of life. Such cognitive dysfunctions can affect attention, executive functions, and memory and processing speed, can persist after treatment, and their exact causes remain unclear. The aim of this review was to create an inventory and analysis of clinical studies evaluating biological markers and risk factors for cognitive decline in cancer patients before, during, or after therapy...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28375137/design-and-utilisation-of-protocols-to-characterise-dynamic-pet-uptake-of-two-tracers-using-basis-pursuit
#17
Christopher Michael Bell, Simon Puttick, Stephen Rose, Jye Smith, Paul Thomas, Nicholas Dowson
Imaging using more than one biological process using PET could be of great utility, but despite previously proposed approaches to dual-tracer imaging, it is seldom performed. The alternative of performing multiple scans is often infeasible for clinical practice or even in research studies. Dual-tracer PET scanning allows for multiple PET radiotracers to be imaged within the same imaging session. In this paper we describe our approach to utilise the basis pursuit method to aid in the R2.9 design of dual-tracer PET imaging experiments, and later in separation of the signals...
April 4, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28358926/genetically-engineered-rat-gliomas-pdgf-driven-tumor-initiation-and-progression-in-tv-a-transgenic-rats-recreate-key-features-of-human-brain-cancer
#18
Nina P Connolly, Jesse A Stokum, Craig S Schneider, Tatsuya Ozawa, Su Xu, Rebeca Galisteo, Rudolph J Castellani, Anthony J Kim, J Marc Simard, Jeffrey A Winkles, Eric C Holland, Graeme F Woodworth
Previously rodent preclinical research in gliomas frequently involved implantation of cell lines such as C6 and 9L into the rat brain. More recently, mouse models have taken over, the genetic manipulability of the mouse allowing the creation of genetically accurate models outweighed the disadvantage of its smaller brain size that limited time allowed for tumor progression. Here we illustrate a method that allows glioma formation in the rat using the replication competent avian-like sarcoma (RCAS) virus / tumor virus receptor-A (tv-a) transgenic system of post-natal cell type-specific gene transfer...
2017: PloS One
https://www.readbyqxmd.com/read/28356953/alkaloids-of-fascaplysin-are-effective-conventional-chemotherapeutic-drugs-inhibiting-the-proliferation-of-c6-glioma-cells-and-causing-their-death-in-vitro
#19
Igor Bryukhovetskiy, Irina Lyakhova, Polina Mischenko, Elena Milkina, Sergei Zaitsev, Yuri Khotimchenko, Andrey Bryukhovetskiy, Alexander Polevshchikov, Igor Kudryavtsev, Maxim Khotimchenko, Maxim Zhidkov
Glioblastoma multiforme is an invasive malignant glial brain tumor with a poor prognosis for patients. The primary reasons that lead to the development of treatment resistance are associated with tumor cells infiltrating the brain parenchyma and the specific properties of tumor stem cells. A crucial research area in medical science is the search for effective agents that are able to act on these targets. Fascaplysin alkaloids possess potent antitumor activity. Modern methods for the targeted delivery of drugs reveal extensive possibilities in terms of the clinical use of these compounds...
February 2017: Oncology Letters
https://www.readbyqxmd.com/read/28348494/prognostic-value-of-site-specific-metastases-in-pancreatic-adenocarcinoma-a-surveillance-epidemiology-and-end-results-database-analysis
#20
Hani Oweira, Ulf Petrausch, Daniel Helbling, Jan Schmidt, Meinrad Mannhart, Arianeb Mehrabi, Othmar Schöb, Anwar Giryes, Michael Decker, Omar Abdel-Rahman
AIM: To evaluate the prognostic value of site-specific metastases among patients with metastatic pancreatic carcinoma registered within the Surveillance, Epidemiology and End Results (SEER) database. METHODS: SEER database (2010-2013) has been queried through SEER*Stat program to determine the presentation, treatment outcomes and prognostic outcomes of metastatic pancreatic adenocarcinoma according to the site of metastasis. In this study, metastatic pancreatic adenocarcinoma patients were classified according to the site of metastases (liver, lung, bone, brain and distant lymph nodes)...
March 14, 2017: World Journal of Gastroenterology: WJG
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