keyword
MENU ▼
Read by QxMD icon Read
search

controlled cortical impact

keyword
https://www.readbyqxmd.com/read/28943199/effects-of-the-dimeric-psd-95-inhibitor-uccb01-144-on-functional-recovery-after-fimbria-fornix-transection-in-rats
#1
Jens Bak Sommer, Anders Bach, Hana Malá, Kristian Strømgaard, Jesper Mogensen, Darryl S Pickering
Pharmacological inhibition of PSD-95 is a promising therapeutic strategy in the treatment of stroke, and positive effects of monomeric and dimeric PSD-95 inhibitors have been reported in numerous studies. However, whether therapeutic effects will generalize to other types of acute brain injury such as traumatic brain injury (TBI), which has pathophysiological mechanisms in common with stroke, is currently uncertain. We have previously found a lack of neuroprotective effects of dimeric PSD-95 inhibitors in the controlled cortical impact model of TBI in rats...
September 21, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28942245/regulatory-role-of-nadph-oxidase-2-in-the-polarization-dynamics-and-neurotoxicity-of-microglia-macrophages-after-traumatic-brain-injury
#2
Jing Wang, Merry W Ma, Krishnan M Dhandapani, Darrell W Brann
Traumatic brain injury (TBI) is a leading cause of death and disability. Secondary injuries that develop after the initial trauma contribute to long-lasting neurophysiological deficits. Polarization of microglia/macrophages toward a pro-inflammatory (M1) phenotype may increase the progression of secondary injury following TBI; however, the regulatory and functional mechanisms underlying these changes remain poorly defined. In the present study, we showed elevated expression of NADPH oxidase 2 (NOX2) and activation of nuclear factor-kappa B (NF-κB) predominantly in microglia/macrophages at 4- and 7-days after controlled cortical impact in mice...
September 20, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28942062/volumetric-grey-matter-alterations-in-adolescents-and-adults-born-very-preterm-suggest-accelerated-brain-maturation
#3
Vyacheslav R Karolis, Sean Froudist-Walsh, Jasmin Kroll, Philip J Brittain, Chieh-En Jane Tseng, Kie-Woo Nam, Antje A T S Reinders, Robin M Murray, Steven C R Williams, Paul M Thompson, Chiara Nosarti
Previous research investigating structural neurodevelopmental alterations in individuals who were born very preterm demonstrated a complex pattern of grey matter changes that defy straightforward summary. Here we addressed this problem by characterising volumetric brain alterations in individuals who were born very preterm from adolescence to adulthood at three hierarchically related levels - global, modular and regional. We demarcated structural components that were either particularly resilient or vulnerable to the impact of very preterm birth...
September 20, 2017: NeuroImage
https://www.readbyqxmd.com/read/28939348/transcranial-ultrasound-stimulation-promotes-brain-derived-neurotrophic-factor-and-reduces-apoptosis-in-a-mouse-model-of-traumatic-brain-injury
#4
Wei-Shen Su, Chun-Hu Wu, Szu-Fu Chen, Feng-Yi Yang
BACKGROUND: The protein expressions of brain-derived neurotrophic factor (BDNF) can be elevated by transcranial ultrasound stimulation in the rat brain. OBJECTIVE: The purpose of this study was to investigate the effects and underlying mechanisms of BDNF enhancement by low-intensity pulsed ultrasound (LIPUS) on traumatic brain injury (TBI). METHODS: Mice subjected to controlled cortical impact injury were treated with LIPUS in the injured region daily for a period of 4 days...
September 7, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28937953/the-biological-basis-of-chronic-traumatic-encephalopathy-following-blast-injury-a-literature-review
#5
Matt Aldag, Regina C Armstrong, Faris Bandak, Patrick S F Bellgowan, Timothy Bentley, Sean Biggerstaff, Katrina Caravelli, Joan Cmarik, Alicia Crowder, Thomas J DeGraba, Travis A Dittmer, Richard G Ellenbogen, Colin Greene, Raj K Gupta, Ramona Hicks, Stuart Hoffman, Robert C Latta, Michael J Leggieri, Donald Marion, Robert Mazzoli, Michael McCrea, John O'Donnell, Mark Packer, James B Petro, Todd E Rasmussen, Wendy Sammons-Jackson, Richard Shoge, Victoria Tepe, Ladd A Tremaine, James Zheng
The United States Department of Defense Blast Injury Research Program Coordinating Office organized the 2015 International State-of-the-Science meeting to explore links between blast-related head injury and the development of chronic traumatic encephalopathy (CTE). Before the meeting, the planning committee examined articles published between 2005 and October 2015 and prepared this literature review, which summarized broadly CTE research and addressed questions about the pathophysiological basis of CTE and its relationship to blast- and nonblast-related head injury...
September 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28933218/effects-of-human-es-derived-neural-stem-cell-transplantation-and-kindling-in-a-rat-model-of-traumatic-brain-injury
#6
Stefania Beretta, Kelly M Cunningham, Daniel L Haus, Eric M Gold, Harvey Perez, Luci López-Velázquez, Brian J Cummings
Traumatic brain injury (TBI) is one of the leading causes of death and disability in the population worldwide, with a broad spectrum of symptoms and disabilities. Posttraumatic hyperexcitability is one of the most common neurological disorders that affect people after a head injury. A reliable animal model of posttraumatic hyperexcitability induced by TBI which allows one to test effective treatment strategies is yet to be developed. To address these issues, in the present study, we tested human embryonic stem cell-derived neural stem cell (NSC) transplantation in an animal model of posttraumatic hyperexcitability in which the brain injury was produced in one hemisphere of immunodeficient athymic nude rats by controlled cortical impact, and spontaneous seizures were produced by repeated electrical stimulation (kindling) in the contralateral hemisphere...
July 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28933217/implantation-of-brain-derived-extracellular-matrix-enhances-neurological-recovery-after-traumatic-brain-injury
#7
Yun Wu, Jiayin Wang, Yejie Shi, Hongjian Pu, Rehana K Leak, Anthony K F Liou, Stephen F Badylak, Zhixiong Liu, Jun Zhang, Jun Chen, Ling Chen
Scaffolds composed of extracellular matrix (ECM) are being investigated for their ability to facilitate brain tissue remodeling and repair following injury. The present study tested the hypothesis that the implantation of brain-derived ECM would attenuate experimental traumatic brain injury (TBI) and explored potential underlying mechanisms. TBI was induced in mice by a controlled cortical impact (CCI). ECM was isolated from normal porcine brain tissue by decellularization methods, prepared as a hydrogel, and injected into the ipsilesional corpus callosum and striatum 1 h after CCI...
July 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28933216/dexamethasone-attenuates-the-enhanced-rewarding-effects-of-cocaine-following-experimental-traumatic-brain-injury
#8
Steven F Merkel, Allison M Andrews, Evan M Lutton, Roshanak Razmpour, Lee Anne Cannella, Servio H Ramirez
Clinical studies have identified traumatic brain injury (TBI) as a risk factor for the development of cocaine dependence. This claim is supported by our recent preclinical studies showing enhancement of the rewarding effects of cocaine in mice sustaining moderate controlled cortical impact (CCI) injury during adolescence. Here we test the efficacy of dexamethasone, an anti-inflammatory corticosteroid, to attenuate augmentation of the behavioral response to cocaine observed in CCI-TBI animals using the conditioned place preference (CPP) assay...
July 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28929580/selective-expression-of-egfp-in-mouse-perivascular-astrocytes-by-modification-of-the-mlc1-gene-using-t2a-based-ribosome-skipping
#9
Jordan J Toutounchian, Joseph H McCarty
Perivascular astrocyte end feet closely juxtapose cerebral blood vessels to regulate important developmental and physiological processes including endothelial cell proliferation and sprouting as well as the formation of the blood-brain barrier (BBB). The mechanisms underlying these events remain largely unknown due to a lack of experimental models for identifying perivascular astrocytes and distinguishing these cell types from other astroglial populations. Megalencephalic leukoencephalopathy with subcortical cysts 1 (Mlc1) is a transmembrane protein that is expressed in perivascular astrocyte end feet where it controls BBB development and homeostasis...
September 20, 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/28924363/thrombospondin-1-gene-deficiency-worsens-the-neurological-outcomes-of-traumatic-brain-injury-in-mice
#10
Chongjie Cheng, Zhanyang Yu, Song Zhao, Zhengbu Liao, Changhong Xing, Yinghua Jiang, Yong-Guang Yang, Michael J Whalen, Eng H Lo, Xiaochuan Sun, Xiaoying Wang
Background: Thrombospondin-1 (TSP-1) is an extracellular matrix protein that plays multiple physiological and pathophysiological roles in the brain. Experimental reports suggest that TSP-1 may have an adverse role in neuronal function recovery under certain injury conditions. However, the roles of TSP-1 in traumatic brain injury (TBI) have not been elucidated. In this study we for the first time investigated the roles of TSP-1 in a controlled cortical impact (CCI) model of TBI in TSP-1 knockout (TSP-1 KO) and wild type (WT) mice...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28923595/attentional-deficits-and-altered-neuronal-activation-in-medial-prefrontal-and-posterior-parietal-cortices-in-mice-with-reduced-dopamine-transporter-levels
#11
Anita Cybulska-Klosowicz, Marta Laczkowska, Renata Zakrzewska, Aleksandra Kaliszewska
The executive control function of attention is regulated by the dopaminergic (DA) system. Dopamine transporter (DAT) likely plays a role in controlling the influence of DA on cognitive processes. We examined the effects of DAT depletion on cognitive processes related to attention. Mice with the DAT gene genetically deleted (DAT+/- heterozygotes) were compared to wild type (WT) mice on the Attentional Set-Shifting Task (ASST). Changes in neuronal activity during the ASST were shown with early growth response genes 1 and 2 (egr-1 and egr-2) immunohistochemistry in the medial prefrontal cortex (mPFC) and in the posterior parietal cortex (PPC)...
September 16, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28921587/dimethyl-fumarate-treatment-after-traumatic-brain-injury-prevents-depletion-of-antioxidative-brain-glutathione-and-confers-neuroprotection
#12
Tobias Krämer, Theresa Grob, Lutz Menzel, Tobias Hirnet, Eva Griemert, Konstantin Radyushkin, Serge C Thal, Axel Methner, Michael K E Schaefer
Dimethyl fumarate (DMF) is an immunomodulatory therapeutic for multiple sclerosis and psoriasis with neuroprotective potential. Its mechanism of action involves activation of the antioxidant pathway regulator Nuclear factor erythroid 2-related factor 2 (Nrf2) thereby increasing synthesis of the cellular antioxidant glutathione (GSH). The objective of this study was to investigate whether post-traumatic DMF treatment is beneficial after experimental traumatic brain injury (TBI). Adult C57Bl/6 mice were subjected to controlled cortical impact followed by oral administration of DMF (80 mg/kg body weight) or vehicle at 3 h, 24 h, 48 h and 72 h after the inflicted TBI...
September 16, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28919871/investigating-the-neural-correlates-of-emotion-cognition-interaction-using-an-affective-stroop-task
#13
Nora M Raschle, Lynn V Fehlbaum, Willeke M Menks, Felix Euler, Philipp Sterzer, Christina Stadler
The human brain has the capacity to integrate various sources of information and continuously adapts our behavior according to situational needs in order to allow a healthy functioning. Emotion-cognition interactions are a key example for such integrative processing. However, the neuronal correlates investigating the effects of emotion on cognition remain to be explored and replication studies are needed. Previous neuroimaging studies have indicated an involvement of emotion and cognition related brain structures including parietal and prefrontal cortices and limbic brain regions...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28915853/low-threshold-unmyelinated-mechanoafferents-can-modulate-pain
#14
Kathrin Habig, Anne Schänzer, Wolfgang Schirner, Gothje Lautenschläger, Benjamin Dassinger, Håkan Olausson, Frank Birklein, Elke R Gizewski, Heidrun H Krämer
BACKGROUND: Human, hairy skin contains a subgroup of C-fibers, the C-low threshold mechanoreceptive afferents ((C-LTMR) C-tactile or C-touch (CT) fibers) that are linked with the signaling of affective aspects of human touch. Recent studies suggest an involvement of these afferents in the modulation of pain in healthy volunteers. Small fiber neuropathy (SFN) is associated with a damage of C-fibers. Therefore, an impairment of C-LTMRs can be assumed. We aimed to elaborate a possible role of CT-afferents in pain modulation by investigating healthy volunteers and SFN-patients...
September 15, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28912751/decreased-secondary-lesion-growth-and-attenuated-immune-response-after-traumatic-brain-injury-in-tlr2-4-mice
#15
Sandro M Krieg, Florian Voigt, Pascal Knuefermann, Carsten Jürgen Kirschning, Nikolaus Plesnila, Florian Ringel
Danger-associated molecular patterns are released by damaged cells and trigger neuroinflammation through activation of non-specific pattern recognition receptors, e.g., toll-like receptors (TLRs). Since the role of TLR2 and 4 after traumatic brain injury (TBI) is still unclear, we examined the outcome and the expression of pro-inflammatory mediators after experimental TBI in Tlr2/4(-/-) and wild-type (WT) mice. Tlr2/4(-/-) and WT mice were subjected to controlled cortical injury and contusion volume and brain edema formation were assessed 24 h thereafter...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28911901/structural-brain-abnormalities-of-attention-deficit-hyperactivity-disorder-with-oppositional-defiant-disorder
#16
Siri D S Noordermeer, Marjolein Luman, Corina U Greven, Kim Veroude, Stephen V Faraone, Catharina A Hartman, Pieter J Hoekstra, Barbara Franke, Jan K Buitelaar, Dirk J Heslenfeld, Jaap Oosterlaan
BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is associated with structural abnormalities in total gray matter, basal ganglia, and cerebellum. Findings of structural abnormalities in frontal and temporal lobes, amygdala, and insula are less consistent. Remarkably, the impact of comorbid oppositional defiant disorder (ODD) (comorbidity rates up to 60%) on these neuroanatomical differences is scarcely studied, while ODD (in combination with conduct disorder) has been associated with structural abnormalities of the frontal lobe, amygdala, and insula...
July 21, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28910378/neuroinflammation-myelin-and-behavior-temporal-patterns-following-mild-traumatic-brain-injury-in-mice
#17
Toufik Taib, Claire Leconte, Juliette Van Steenwinckel, Angelo H Cho, Bruno Palmier, Egle Torsello, Rene Lai Kuen, Somfieme Onyeomah, Karine Ecomard, Chiara Benedetto, Bérard Coqueran, Anne-Catherine Novak, Edwige Deou, Michel Plotkine, Pierre Gressens, Catherine Marchand-Leroux, Valérie C Besson
Traumatic brain injury (TBI) results in white matter injury (WMI) that is associated with neurological deficits. Neuroinflammation originating from microglial activation may participate in WMI and associated disorders. To date, there is little information on the time courses of these events after mild TBI. Therefore we investigated (i) neuroinflammation, (ii) WMI and (iii) behavioral disorders between 6 hours and 3 months after mild TBI. For that purpose, we used experimental mild TBI in mice induced by a controlled cortical impact...
2017: PloS One
https://www.readbyqxmd.com/read/28900826/comparative-examination-of-temporal-glyoxalase-1-variations-following-perforant-pathway-transection-excitotoxicity-and-controlled-cortical-impact-injury
#18
Philipp Pieroh, Daniel-Christoph Wagner, Beat Alessandri, Mojgan Dabbagh Nazari, Angela Ehrlich, Chalid Ghadban, Constance Hobusch, Gerd Birkenmeier, Faramarz Dehghani
Following acute neuronal lesions, metabolic imbalance occurs, the rate of glycolysis increases, and methylglyoxal (MGO) forms, finally leading to metabolic dysfunction and inflammation. The glyoxalase system is the main detoxification system for MGO and is impaired following excitotoxicity and stroke. However, it is not known yet whether alterations of the glyoxalase system are also characteristic for other neuronal damage models. Neuronal damage was induced in organotypic hippocampal slice cultures by transection of perforant pathway (PPT; 5 min to 72 h) and N-methyl-D-aspartate (NMDA; 50 μM for 4 h) or in vivo after controlled cortical impact (CCI) injury (2 h to 14 days)...
September 12, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28900214/structure-function-correlations-in-retinitis-pigmentosa-patients-with-partially-preserved-vision-a-voxel-based-morphometry-study
#19
Ana Rita Machado, Andreia Carvalho Pereira, Fábio Ferreira, Sónia Ferreira, Bruno Quendera, Eduardo Silva, Miguel Castelo-Branco
Retinitis Pigmentosa is a group of hereditary retinal dystrophy disorders associated with progressive peripheral visual field loss. The impact of this retinal loss in cortical gray matter volume has not been addressed before in Retinitis Pigmentosa patients with low vision. Voxel-based morphometry was applied to study whole brain gray matter volume changes in 27 Retinitis Pigmentosa patients with partially preserved vision and 38 age- and gender-matched normally sighted controls to determine whether peripheral visual loss can lead to changes in gray matter volume...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28899758/chronic-global-analysis-of-vascular-permeability-and-cerebral-blood-flow-after-bone-marrow-stromal-cell-treatment-of-traumatic-brain-injury-in-the-rat-a-long-term-mri-study
#20
Lian Li, Michael Chopp, Guangliang Ding, Qingjiang Li, Asim Mahmood, Quan Jiang
Vascular permeability and hemodynamic alteration in response to the transplantation of human bone marrow stromal cells (hMSCs) after traumatic brain injury (TBI) were longitudinally investigated in non directly injured and normal-appearing cerebral tissue using magnetic resonance imaging (MRI). Male Wistar rats (300-350g, n=30) subjected to controlled cortical impact TBI were intravenously injected with 1 ml of saline (at 6-hours or 1-week post-injury, n=5/group) or with hMSCs in suspension (∼3x10(6) hMSCs, at 6-hours or 1-week post-injury, n=10/group)...
September 9, 2017: Brain Research
keyword
keyword
31970
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"