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Multiple Sclerosis Brain injury

Benjamin De Leener, Simon Lévy, Sara M Dupont, Vladimir S Fonov, Nikola Stikov, D Louis Collins, Virginie Callot, Julien Cohen-Adad
For the past 25 years, the field of neuroimaging has witnessed the development of several software packages for processing multi-parametric magnetic resonance imaging (mpMRI) to study the brain. These software packages are now routinely used by researchers and clinicians, and have contributed to important breakthroughs for the understanding of brain anatomy and function. However, no software package exists to process mpMRI data of the spinal cord. Despite the numerous clinical needs for such advanced mpMRI protocols (multiple sclerosis, spinal cord injury, cervical spondylotic myelopathy, etc...
October 5, 2016: NeuroImage
Caroline Guglielmetti, Debbie Le Blon, Eva Santermans, Angelica Salas-Perdomo, Jasmijn Daans, Nathalie De Vocht, Disha Shah, Chloé Hoornaert, Jelle Praet, Jurgen Peerlings, Firat Kara, Christian Bigot, Zhenhua Mai, Herman Goossens, Niel Hens, Sven Hendrix, Marleen Verhoye, Anna M Planas, Zwi Berneman, Annemie van der Linden, Peter Ponsaerts
Detrimental inflammatory responses in the central nervous system are a hallmark of various brain injuries and diseases. With this study we provide evidence that lentiviral vector-mediated expression of the immune-modulating cytokine interleukin 13 (IL-13) induces an alternative activation program in both microglia and macrophages conferring protection against severe oligodendrocyte loss and demyelination in the cuprizone mouse model for multiple sclerosis (MS). First, IL-13 mediated modulation of cuprizone induced lesions was monitored using T2 -weighted magnetic resonance imaging and magnetization transfer imaging, and further correlated with quantitative histological analyses for inflammatory cell influx, oligodendrocyte death, and demyelination...
September 29, 2016: Glia
Kirsten S Evonuk, Carson E Moseley, Ryan E Doyle, Casey T Weaver, Tara M DeSilva
A major hallmark of the autoimmune demyelinating disease multiple sclerosis (MS) is immune cell infiltration into the brain and spinal cord resulting in myelin destruction, which not only slows conduction of nerve impulses, but causes axonal injury resulting in motor and cognitive decline. Current treatments for MS focus on attenuating immune cell infiltration into the central nervous system (CNS). These treatments decrease the number of relapses, improving quality of life, but do not completely eliminate relapses so long-term disability is not improved...
2016: Journal of Visualized Experiments: JoVE
Katharine E Stahon, Chinthasagar Bastian, Shelby Griffith, Grahame J Kidd, Sylvain Brunet, Selva Baltan
UNLABELLED: The impact of aging on CNS white matter (WM) is of general interest because the global effects of aging on myelinated nerve fibers are more complex and profound than those in cortical gray matter. It is important to distinguish between axonal changes created by normal aging and those caused by neurodegenerative diseases, including multiple sclerosis, stroke, glaucoma, Alzheimer's disease, and traumatic brain injury. Using three-dimensional electron microscopy, we show that in mouse optic nerve, which is a pure and fully myelinated WM tract, aging axons are larger, have thicker myelin, and are characterized by longer and thicker mitochondria, which are associated with altered levels of mitochondrial shaping proteins...
September 28, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
Slava Rom, Viviana Zuluaga-Ramirez, Nancy L Reichenbach, Holly Dykstra, Sachin Gajghate, Pal Pacher, Yuri Persidsky
BACKGROUND: Blood-brain barrier (BBB) dysfunction/disruption followed by leukocyte infiltration into the brain causes neuroinflammation and contributes to morbidity in multiple sclerosis, encephalitis, traumatic brain injury, and stroke. The identification of pathways that decreases the inflammatory potential of leukocytes would prevent such injury. Poly(ADP-ribose) polymerase 1 (PARP) controls various genes via its interaction with myriad transcription factors. Selective PARP inhibitors have appeared lately as potent anti-inflammatory tools...
September 27, 2016: Journal of Neuroinflammation
Rebecca Haddad, Alix Verrando, Claire Hentzen, Laura Weglinski, Frédérique Le Breton, Delphine Verollet, Gérard Amarenco
OBJECTIVE: Self-clean intermittent catheterization (CIC) is a part of the arsenal of treatment strategies of neurogenic bladder (1). The acquisition of this technique depends on environment and parameters related to the patients, that can be measured by the FIM score (Functional Independence Measure), validated in various neurological populations (2). The objective of this study is to determine whether disability, as measured by the FIM, is predictive of the acquisition and the retention of CIC...
September 2016: Annals of Physical and Rehabilitation Medicine
Niki Chouliara, Nadina B Lincoln
OBJECTIVE: To identify patient-perceived benefits of memory rehabilitation and draw transferrable lessons for the delivery and evaluation of similar interventions for people with neurological disabilities. METHODS: A qualitative study was conducted as part of a pragmatic randomised controlled trial comparing 2 memory rehabilitation approaches with a self-help control group. Postintervention interviews were conducted with 20 participants with a diagnosis of traumatic brain injury, multiple sclerosis or stroke...
September 19, 2016: BMJ Open
M A Akulov, S E Khat'kova, O A Mokienko, O R Orlova, D Yu Usachev, V O Zakharov, A S Orlova, A A Tomsky
Spasticity is a type of muscle hyperactivity that occurs in patients after focal lesions of the Central nervous system due to various diseases: stroke, traumatic brain injury or spinal cord injury, neurosurgical intervention, as well as multiple sclerosis and other diseases of the Central nervous system and is the most disability manifestation of the syndrome of upper motor neuron (UMNS). Focal spasticity of the upper limb requires a complex treatment. Botulinum toxin therapy is an effective treatment for focal/multifocal spasticity in reducing muscle tone and improving function with the highest level of evidence according to the latest American and European guidelines for treatment of spasticity...
2016: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
Conrad Johanson, Nancy Johanson
Robust modeling of CNS transport integrates molecular fluxes at the microvascular blood-brain barrier and epithelial choroid plexus blood-CSF barrier. Normal activity of solute transporters, channels and aquaporins, in the cerebral endothelium and choroidal epithelium, sets the microenvironment composition for neurons and glia. Conversely, perturbed transport/permeability at the barrier interfaces causes interstitial fluid dyshomeostasis (e.g. edema) arising in neural disorders. Critically-important transependymal solute/water distribution between brain and CSF needs more attention...
September 15, 2016: CNS & Neurological Disorders Drug Targets
Salman Goudarzi, Andrea Rivera, Arthur M Butt, Sassan Hafizi
A key aim of therapy for multiple sclerosis (MS) is to promote the regeneration of oligodendrocytes and remyelination in the central nervous system (CNS). The present study provides evidence that the vitamin K-dependent protein growth arrest specific 6 (Gas6) promotes such repair in in vitro cultures of mouse optic nerve and cerebellum. We first determined expression of Gas6 and TAM (Tyro3, Axl, Mer) receptors in the mouse CNS, with all three TAM receptors increasing in expression through postnatal development, reaching maximal levels in the adult...
October 2016: ASN Neuro
Yaqing Shu, Ling Long, Siyuan Liao, Jiezheng Yang, Jianfang Li, Wei Qiu, Yu Yang, Jian Bao, Aiming Wu, Xueqiang Hu, Zhengqi Lu
BACKGROUND: Hereditary diffuse leukoencephalopathy with axonal spheroids (HDLS) is a rare autosomal dominant disorder characterized by cerebral white matter degeneration and caused by mutations in the colony-stimulating factor 1 receptor (CSF1R) gene. Involvement of the optic nerves in hereditary diffuse leukoencephalopathy is rare. CASE PRESENTATION: We report the case of a 30-year-old Chinese woman with HDLS, who carried a heterozygous c.2345 G > A (p...
2016: BMC Neurology
Yoram Cohen, Debbie Anaby, Darya Morozov
Diffusion MRI is extensively used to study brain microarchitecture and pathologies, and water diffusion appears highly anisotropic in the white matter (WM) of the spinal cord (SC). Despite these facts, the use of diffusion MRI to study the SC, which has increased in recent years, is much less common than that in the brain. In the present review, after a brief outline of early studies of diffusion MRI (DWI) and diffusion tensor MRI (DTI) of the SC, we provide a short survey on DTI and on diffusion MRI methods beyond the tensor that have been used to study SC microstructure and pathologies...
September 6, 2016: NMR in Biomedicine
Yaoming Wang, Zhen Zhao, Sanket V Rege, Min Wang, Gabriel Si, Yi Zhou, Su Wang, John H Griffin, Steven A Goldman, Berislav V Zlokovic
Activated protein C (APC) is a blood protease with anticoagulant activity and cell-signaling activities mediated by the activation of protease-activated receptor 1 (F2R, also known as PAR1) and F2RL1 (also known as PAR3) via noncanonical cleavage. Recombinant variants of APC, such as the 3K3A-APC (Lys191-193Ala) mutant in which three Lys residues (KKK191-193) were replaced with alanine, and/or its other mutants with reduced (>90%) anticoagulant activity, engineered to reduce APC-associated bleeding risk while retaining normal cell-signaling activity, have shown benefits in preclinical models of ischemic stroke, brain trauma, multiple sclerosis, amyotrophic lateral sclerosis, sepsis, ischemic and reperfusion injury of heart, kidney and liver, pulmonary, kidney and gastrointestinal inflammation, diabetes and lethal body radiation...
September 2016: Nature Medicine
Arijit Ghosh, Fang Chen, Abhimanyu Thakur, Hao Hong
Cysteinyl leukotrienes are a group of the inflammatory lipid molecules well known as mediators of inflammatory signaling in the allergic diseases. Although they are traditionally known for their role in allergic asthma, allergic rhinitis, and others, recent advances in the field of biomedical research highlighted the role of these inflammatory mediators in a broader range of diseases such as in the inflammation associated with the central nervous system (CNS) disorders, vascular inflammation (atherosclerotic), and in cancer...
August 19, 2016: CNS Neuroscience & Therapeutics
Sebastian A Lewandowski, Linda Fredriksson, Daniel A Lawrence, Ulf Eriksson
: Neurological disorders account for a majority of non-malignant disability in humans and are often associated with dysfunction of the blood-brain barrier (BBB). Recent evidence shows that despite apparent variation in the origin of neural damage, the central nervous system has a common injury response mechanism involving platelet-derived growth factor (PDGF)-CC activation in the neurovascular unit and subsequent dysfunction of BBB integrity. Inhibition of PDGF-CC signaling with imatinib in mice has been shown to prevent BBB dysfunction and have neuroprotective effects in acute damage conditions, including traumatic brain injury, seizures or stroke, as well as in neurodegenerative diseases that develop over time, including multiple sclerosis and amyotrophic lateral sclerosis...
August 12, 2016: Pharmacology & Therapeutics
Kristine M Ulrichsen, Tobias Kaufmann, Erlend S Dørum, Knut K Kolskår, Geneviève Richard, Dag Alnæs, Tone J Arneberg, Lars T Westlye, Jan E Nordvik
BACKGROUND: Fatigue is a common symptom following neurological illnesses and injuries, and is rated as one of the most debilitating sequela in conditions such as stroke, traumatic brain injury (TBI), and multiple sclerosis (MS). Yet effective treatments are lacking, suggesting a pressing need for a better understanding of its etiology and mechanisms that may alleviate the symptoms. Recently mindfulness-based interventions have demonstrated promising results for fatigue symptom relief...
2016: Frontiers in Psychology
Pia Crone Christensen, Zahra Samadi-Bahrami, Vlady Pavlov, Peter K Stys, G R Wayne Moore
Glutamate is the key excitatory neurotransmitter of the central nervous system (CNS). Its role in human grey matter transmission is well understood, but this is less clear in white matter (WM). Ionotropic glutamate receptors (iGluR) are found on both neuronal cell bodies and glia as well as on myelinated axons in rodents, and rodent WM tissue is capable of glutamate release. Thus, rodent WM expresses many of the components of the traditional grey matter neuron-to-neuron synapse, but to date this has not been shown for human WM...
September 6, 2016: Neuroscience Letters
B A Mateen, C Doogan, K Hayward, S Hourihan, J Hurford, E D Playford
OBJECTIVE: To examine the state of psychometric validation in the health-related work outcome literature. DATA SOURCES: We searched Pubmed, PMC, CINAHL, EMBASE [+ EMBASE Classic], and PsycINFO, from inception to January 2016., using the search terms: Stroke, Multiple Sclerosis, Epilepsy, Spinal Cord Injury, Brain Injury, Musculoskeletal Disease, Work, Absenteeism, Presenteeism, Occupation, Employment, Job, Outcome measure, Assessment, Work Capacity Evaluation, Scale, and Questionnaire...
July 13, 2016: Archives of Physical Medicine and Rehabilitation
Peter B Crino
Defining the multiple roles of the mechanistic (formerly 'mammalian') target of rapamycin (mTOR) signalling pathway in neurological diseases has been an exciting and rapidly evolving story of bench-to-bedside translational research that has spanned gene mutation discovery, functional experimental validation of mutations, pharmacological pathway manipulation, and clinical trials. Alterations in the dual contributions of mTOR - regulation of cell growth and proliferation, as well as autophagy and cell death - have been found in developmental brain malformations, epilepsy, autism and intellectual disability, hypoxic-ischaemic and traumatic brain injuries, brain tumours, and neurodegenerative disorders...
July 2016: Nature Reviews. Neurology
Zachary Nicholas, Michael Sughrue, James Battiste, Ozer Algan
We aimed to evaluate the clinical and pathologic features of two common medical illnesses and their appropriate workup and pathognomonic findings. A 57-year-old white male presented with a new onset expressive aphasia while traveling abroad. He was evaluated at an outside facility and underwent workup for a stroke. The evaluation included a CT and MRI of the brain demonstrating three new enhancing lesions, the largest of which was a 2.5 cm ring-enhancing cystic lesion. A CT of the chest noted a 4-cm cystic thyroid lesion that was diagnosed as a thyroid cancer with brain metastases...
2016: Curēus
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