keyword
MENU ▼
Read by QxMD icon Read
search

radiation cognition

keyword
https://www.readbyqxmd.com/read/29777152/temporary-microglia-depletion-after-cosmic-radiation-modifies-phagocytic-activity-and-prevents-cognitive-deficits
#1
Karen Krukowski, Xi Feng, Maria Serena Paladini, Austin Chou, Kristen Sacramento, Katherine Grue, Lara-Kirstie Riparip, Tamako Jones, Mary Campbell-Beachler, Gregory Nelson, Susanna Rosi
Microglia are the main immune component in the brain that can regulate neuronal health and synapse function. Exposure to cosmic radiation can cause long-term cognitive impairments in rodent models thereby presenting potential obstacles for astronauts engaged in deep space travel. The mechanism/s for how cosmic radiation induces cognitive deficits are currently unknown. We find that temporary microglia depletion, one week after cosmic radiation, prevents the development of long-term memory deficits. Gene array profiling reveals that acute microglia depletion alters the late neuroinflammatory response to cosmic radiation...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29770225/quality-of-life-of-irradiated-brain-tumor-survivors-treated-with-donepezil-or-placebo-results-of-the-wfu-ccop-research-base-protocol-91105
#2
Michelle J Naughton, L Douglas Case, Ann Peiffer, Michael Chan, Volker Stieber, Dennis Moore, Steven Falchuk, James Piephoff, William Edenfield, Jeffrey Giguere, Monica Loghin, Edward G Shaw, Stephen R Rapp
Background: The health-related quality of life (HRQL) and fatigue of brain cancer survivors treated with donepezil or placebo for cognitive symptoms after radiation therapy were examined. Methods: One hundred ninety-eight patients who completed >30 Gy fractionated whole or partial brain irradiation at least 6 months prior to enrollment were randomized to either placebo or donepezil (5 mg for 6 weeks followed by 10 mg for 18 weeks) in a phase 3 trial. A neurocognitive battery, the Functional Assessment of Cancer Therapy-Brain (FACT-Br) and the Functional Assessment of Chronic Illness Therapy (FACIT)-fatigue, was administered at baseline, 12 weeks, and 24 weeks...
May 2018: Neuro-oncology Practice
https://www.readbyqxmd.com/read/29765301/the-additional-contribution-of-white-matter-hyperintensity-location-to-post-stroke-cognitive-impairment-insights-from-a-multiple-lesion-symptom-mapping-study
#3
Lei Zhao, Adrian Wong, Yishan Luo, Wenyan Liu, Winnie W C Chu, Jill M Abrigo, Ryan K L Lee, Vincent Mok, Lin Shi
White matter hyperintensities (WMH) are common in acute ischemic stroke patients. Although WMH volume has been reported to influence post-stroke cognition, it is still not clear whether WMH location, independent of acute ischemic lesion (AIL) volume and location, contributes to cognitive impairment after stroke. Here, we proposed a multiple-lesion symptom mapping model that considers both the presence of WMH and AIL to measure the additional contribution of WMH locations to post-stroke cognitive impairment...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29753415/early-effects-of-16-o-radiation-on-neuronal-morphology-and-cognition-in-a-murine-model
#4
Hannah Carr, Tyler C Alexander, Thomas Groves, Frederico Kiffer, Jing Wang, Elvin Price, Marjan Boerma, Antiño R Allen
Astronauts exposed to high linear energy transfer radiation may experience cognitive injury. The pathogenesis of this injury is unknown but may involve glutamate receptors or modifications to dendritic structure and/or dendritic spine density and morphology. Glutamate is the major excitatory neurotransmitter in the central nervous system, where it acts on ionotropic and metabotropic glutamate receptors located at the presynaptic terminal and in the postsynaptic membrane at synapses in the hippocampus. Dendritic spines are sites of excitatory synaptic transmission, and changes in spine structure and dendrite morphology are thought to be morphological correlates of altered brain function associated with hippocampal-dependent learning and memory...
May 2018: Life Sciences in Space Research
https://www.readbyqxmd.com/read/29753414/late-effects-of-1-h-irradiation-on-hippocampal-physiology
#5
Frederico Kiffer, Alexis K Howe, Hannah Carr, Jing Wang, Tyler Alexander, Julie E Anderson, Thomas Groves, John W Seawright, Vijayalakshmi Sridharan, Gwendolyn Carter, Marjan Boerma, Antiño R Allen
NASA's Missions to Mars and beyond will expose flight crews to potentially dangerous levels of charged-particle radiation. Of all charged nuclei, 1 H is the most abundant charged particle in both the galactic cosmic ray (GCR) and solar particle event (SPE) spectra. There are currently no functional spacecraft shielding materials that are able to mitigate the charged-particle radiation encountered in space. Recent studies have demonstrated cognitive injuries due to high-dose 1 H exposures in rodents. Our study investigated the effects of 1 H irradiation on neuronal morphology in the hippocampus of adult male mice...
May 2018: Life Sciences in Space Research
https://www.readbyqxmd.com/read/29750673/quality-of-life-perception-cognitive-function-and-psychological-status-in-a-real-world-population-of-glioblastoma-patients-treated-with-radiotherapy-and-temozolomide-a-single-center-prospective-study
#6
Giuseppe Lombardi, Eleonora Bergo, Paola Del Bianco, Luisa Bellu, Ardi Pambuku, Mario Caccese, Leonardo Trentin, Vittorina Zagonel
BACKGROUND: Health-related quality of life (HRQoL), cognitive function, and psychological status represent an important focus during the treatment of glioblastoma patients. Nevertheless, few randomized, prospective clinical trials have analyzed these factors, and very little is known in the real-clinical world. We evaluated these characteristics in glioblastoma patients treated with standard first-line therapy outside clinical trials. PATIENTS AND METHODS: In total, 111 newly, histologically diagnosed glioblastoma patients treated at our oncology center with radiotherapy and temozolomide were prospectively enrolled...
May 10, 2018: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29747571/axonal-chronic-injury-in-treatment-na%C3%A3-ve-hiv-adults-with-asymptomatic-neurocognitive-impairment-and-its-relationship-with-clinical-variables-and-cognitive-status
#7
Rui-Li Li, Jun Sun, Zhen-Chao Tang, Jing-Ji Zhang, Hong-Jun Li
BACKGROUND: HIV is a neurotropic virus, and it can bring about neurodegeneration and may even result in cognitive impairments. The precise mechanism of HIV-associated white matter (WM) injury is unknown. The effects of multiple clinical contributors on WM impairments and the relationship between the WM alterations and cognitive performance merit further investigation. METHODS: Diffusion tensor imaging (DTI) was performed in 20 antiretroviral-naïve HIV-positive asymptomatic neurocognitive impairment (ANI) adults and 20 healthy volunteers...
May 10, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29743581/evolution-of-gamma-knife-capsulotomy-for-intractable-obsessive-compulsive-disorder
#8
REVIEW
Euripedes C Miguel, Antonio C Lopes, Nicole C R McLaughlin, Georg Norén, André F Gentil, Clement Hamani, Roseli G Shavitt, Marcelo C Batistuzzo, Edoardo F Q Vattimo, Miguel Canteras, Antonio De Salles, Alessandra Gorgulho, João Victor Salvajoli, Erich Talamoni Fonoff, Ian Paddick, Marcelo Q Hoexter, Christer Lindquist, Suzanne N Haber, Benjamin D Greenberg, Sameer A Sheth
For more than half a century, stereotactic neurosurgical procedures have been available to treat patients with severe, debilitating symptoms of obsessive-compulsive disorder (OCD) that have proven refractory to extensive, appropriate pharmacological, and psychological treatment. Although reliable predictors of outcome remain elusive, the establishment of narrower selection criteria for neurosurgical candidacy, together with a better understanding of the functional neuroanatomy implicated in OCD, has resulted in improved clinical efficacy for an array of ablative and non-ablative intervention techniques targeting the cingulum, internal capsule, and other limbic regions...
May 9, 2018: Molecular Psychiatry
https://www.readbyqxmd.com/read/29726782/laser-ablation-after-stereotactic-radiosurgery-a-multicenter-prospective-study-in-patients-with-metastatic-brain-tumors-and-radiation-necrosis
#9
Manmeet Ahluwalia, Gene H Barnett, Di Deng, Stephen B Tatter, Adrian W Laxton, Alireza M Mohammadi, Eric Leuthardt, Roukoz Chamoun, Kevin Judy, Anthony Asher, Marco Essig, Jorg Dietrich, Veronica L Chiang
OBJECTIVE Laser Ablation After Stereotactic Radiosurgery (LAASR) is a multicenter prospective study of laser interstitial thermal (LITT) ablation in patients with radiographic progression after stereotactic radiosurgery for brain metastases. METHODS Patients with a Karnofsky Performance Scale (KPS) score ≥ 60, an age > 18 years, and surgical eligibility were included in this study. The primary outcome was local progression-free survival (PFS) assessed using the Response Assessment in Neuro-Oncology Brain Metastases (RANO-BM) criteria...
May 4, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29725309/reduced-white-matter-integrity-with-cognitive-impairments-in-end-stage-renal-disease
#10
Yi Yin, Meng Li, Chao Li, Xiaofen Ma, Jianhao Yan, Tianyue Wang, Shishun Fu, Kelei Hua, Yunfan Wu, Wenfeng Zhan, Guihua Jiang
Background: End-stage renal disease (ESRD) is a serious public health problem, which can often lead to multiorgan dysfunction, such as cerebrovascular disease and cognitive damage. It is essential to understand cognitive impairment in patients with ESRD to develop better ESRD treatment and prevent further cognitive impairment. Cognitive impairment is believed to be related to structural abnormalities in the brain. Purpose: To investigate white matter microstructural abnormalities in patients with ESRD using TBSS analysis of DTI and to explore the possible mechanisms underlying the impaired cognitive function...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29716738/neuropsychological-consequences-of-childhood-medulloblastoma-and-possible-interventions-a-review
#11
E Doger de Spéville, V Kieffer, C Dufour, J Grill, M Noulhiane, L Hertz-Pannier, M Chevignard
BACKGROUND: Children who have been treated for a medulloblastoma often suffer long-term cognitive impairments that often negatively affect their academic performance and quality of life. In this article, we will review the neuropsychological consequences of childhood medulloblastoma and discuss the risk factors known to influence the presence and severity of these cognitive impairments and possible interventions to improve their quality of life. METHODS: This narrative review was based on electronic searches of PubMed to identify all relevant studies...
April 28, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29707655/the-neural-determinants-of-age-related-changes-in-fluid-intelligence-a-pre-registered-longitudinal-analysis-in-uk-biobank
#12
Rogier A Kievit, Delia Fuhrmann, Gesa Sophia Borgeest, Ivan L Simpson-Kent, Richard N A Henson
Background:  Fluid intelligence declines with advancing age, starting in early adulthood. Within-subject declines in fluid intelligence are highly correlated with contemporaneous declines in the ability to live and function independently. To support healthy aging, the mechanisms underlying these declines need to be better understood. Methods:  In this pre-registered analysis, we applied latent growth curve modelling to investigate the neural determinants of longitudinal changes in fluid intelligence across three time points in 185,317 individuals (N=9,719 two waves, N=870 three waves) from the UK Biobank (age range: 39-73 years)...
2018: Wellcome Open Research
https://www.readbyqxmd.com/read/29680253/longitudinal-study-of-irradiation-induced-brain-microstructural-alterations-with-s-index-a-diffusion-mri-biomarker-and-mr-spectroscopy
#13
Elodie Anne Pérès, Olivier Etienne, Antoine Grigis, Fawzi Boumezbeur, François Dominique Boussin, Denis Le Bihan
PURPOSE: Radiation therapy is widely used for the treatment of brain tumors, but it may lead to severe cognitive impairments. Previous studies have shown that ionizing irradiation induces demyelination, blood-brain barrier alterations, and impaired neurogenesis in animal models. Hence, noninvasive and sensitive biomarkers of irradiation injury are needed to investigate these effects in patients and improve radiation therapy protocols. METHODS AND MATERIALS: The heads of 3-month-old male C57BL/6RJ mice (15 control mice and 15 irradiated mice) were exposed to radiation doses of 3 fractions of 5 Gy from a 60 Co source with a medical irradiator...
February 2, 2018: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29677125/detrimental-effects-of-helium-ion-irradiation-on-cognitive-performance-and-cortical-levels-of-map-2-in-b6d2f1-mice
#14
Jacob Raber, Eileen Ruth S Torres, Tunde Akinyeke, Joanne Lee, Sydney J Weber Boutros, Mitchell S Turker, Amy Kronenberg
The space radiation environment includes helium (⁴He) ions that may impact brain function. As little is known about the effects of exposures to ⁴He ions on the brain, we assessed the behavioral and cognitive performance of C57BL/6J × DBA2/J F1 (B6D2F1) mice three months following irradiation with ⁴He ions (250 MeV/n; linear energy transfer (LET) = 1.6 keV/μm; 0, 21, 42 or 168 cGy). Sham-irradiated mice and mice irradiated with 21 or 168 cGy showed novel object recognition, but mice irradiated with 42 cGy did not...
April 20, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29660023/radiation-induces-age-dependent-deficits-in-cortical-synaptic-plasticity
#15
Die Zhang, Wei Zhou, Thanh Thai Lam, Connie Weng, Lawrence Bronk, Duo Ma, Qiang Wang, Joseph G Duman, Patrick M Dougherty, David R Grosshans
Background: Radiation-induced cognitive dysfunction is a significant side effect of cranial irradiation for brain tumors. Clinically, pediatric patients are more vulnerable than adults. However, the underlying mechanisms of dysfunction, including reasons for age dependence, are still largely unknown. Previous studies have focused on the loss of hippocampal neuronal precursor cells and deficits in memory. However, survivors may also experience deficits in attention, executive function, or other non-hippocampal-dependent cognitive domains...
April 6, 2018: Neuro-oncology
https://www.readbyqxmd.com/read/29657889/pre-operative-versus-post-operative-radiosurgery-for-brain-metastasis-effects-on-treatment-volume-and-inter-observer-variability
#16
B A Vellayappan, J Doody, E Vandervoort, J Szanto, J Sinclair, J M Caudrelier, S Malone
Purpose/Objectives: Compared to post-operative whole brain radiotherapy, resection cavity radiosurgery reduces impact on neuro-cognitive function and improves quality-of-life. However, coverage of the operative tract, in addition to tumour bed, may lead to large treatment volumes and inter-observer variability. We hypothesized that pre-operative radiosurgery reduces target volume size and inter-observer variability compared to post-operative radiosurgery. Materials/Methods: We identified 10 consecutive patients, with solitary brain metastasis, treated with post-operative cavity radiosurgery...
2018: Journal of Radiosurgery and SBRT
https://www.readbyqxmd.com/read/29652661/combined-brain-and-heart-magnetic-resonance-imaging-in-systemic-vasculitides-fiction-or-real-need
#17
REVIEW
Sophie I Mavrogeni, George Kitas, Hildo J Lamb, Klearchos Psychoyios, Theodoros Dimitroulas, Loukia Koutsogeorgopoulou, Kyriaki Boki, Vasiliki Vartela, Genovefa Kolovou, George Markousis-Mavrogenis, Cees G Kallenberg, Loic Guillevin, Dimitrios Vassilopoulos
Systemic vasculitides (SVs) is a group of diseases characterised by inflammation/necrosis of the blood vessel wall in various organs. Simultaneous brain and heart involvement is a cause of increased morbidity/mortality in SV. We aimed to present evidence of concurrent brain/heart involvement in SV and the role of a combined brain/heart magnetic resonance imaging (MRI) in their risk stratification. Cerebral vasculitis (CV) can be presented as focal deficits, seizures, headache, neuropsychiatric manifestations or cognitive dysfunction and cardiovascular disease (CVD) as myocardial/vascular inflammation, perfusion/function defects and fibrosis...
April 10, 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29651598/geriatric-assessment-for-older-patients-with-non-small-cell-lung-cancer-daily-practice-of-centers-participating-in-the-nvalt25-eldapt-trial
#18
Elisabeth J M Driessen, Judith G M van Loon, Huub A Maas, Anne-Marie C Dingemans, Maryska L G Janssen-Heijnen
INTRODUCTION: Geriatric assessment (GA) for older patients with lung cancer could provide insight into vulnerability, cognitive impairment, and risk of toxicity. Discontinuation and complications of intensive treatment could potentially be prevented in vulnerable and frail patients. This study aimed to evaluate current clinical practice of GA for older patients with lung cancer in the Netherlands and identify potential hurdles for implementation. METHODS: Pulmonologists and radiation oncologists participating in the NVALT25-ELDAPT trial completed an online questionnaire regarding current practice of GA, added value of GA for treatment decision-making and logistic barriers for patients with non-small cell lung cancer...
April 12, 2018: Lung
https://www.readbyqxmd.com/read/29649913/effects-of-an-exercise-intervention-on-cancer-related-fatigue-and-its-relationship-to-markers-of-oxidative-stress
#19
Chris P Repka, Reid Hayward
BACKGROUND: Although the underlying mechanisms of cancer-related fatigue (CRF) are not fully characterized, treatment-associated oxidative stress may play a role. The purpose of this study was to determine the effect of an exercise intervention on the relationship between CRF and oxidative stress. METHODS: Upon cessation of radiation or chemotherapy, 8 cancer patients participated in a 10-week exercise intervention (EX), while 7 continued standard care (CON). Blood draws and fatigue questionnaires were administered to cancer patients before and after the intervention as well as to 7 age-matched individuals with no cancer history...
April 1, 2018: Integrative Cancer Therapies
https://www.readbyqxmd.com/read/29621934/processing-speed-in-children-treated-for-brain-tumors-effects-of-radiation-therapy-and-age
#20
Lisa A Jacobson, E Mark Mahone, Keith O Yeates, M Douglas Ris
The current study examined processing speed in children two years post-treatment for brain tumors (BT) with radiation therapy (RT) compared to those treated with without RT. Participants included 59 children (4-17 years) with BT assessed as part of the Brain Radiation Investigative Study Consortium (BRISC). Processing speed was assessed at two time points: Time1 (3-9 months post-surgery) for 26 children who received whole brain or focal RT (RT group) and 33 treated without RT (no-RT group), and again two years later (Time2) for 42 participants (17 RT, 25 no-RT)...
April 6, 2018: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
keyword
keyword
116127
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"