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Central nervous system recovery

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https://www.readbyqxmd.com/read/27906756/optic-neuritis-the-eye-as-a-window-to-the-brain
#1
Thomas M Jenkins, Ahmed T Toosy
PURPOSE OF REVIEW: Acute optic neuritis is a common clinical problem, requiring a structured assessment to guide management and prevent visual loss. The optic nerve is the most accessible part of the central nervous system, so optic neuritis also represents an important paradigm to help decipher mechanisms of damage and recovery in the central nervous system. Important developments include the advent of optical coherence tomography as a biomarker of central nervous system axonal loss, the discovery of new pathological antibodies, notably against aquaporin-4 and, more recently, myelin oligodendrocyte protein, and emerging evidence for sodium channel blockade as a novel therapeutic approach to address energy failure in neuroinflammatory disease...
November 30, 2016: Current Opinion in Neurology
https://www.readbyqxmd.com/read/27905657/-toxic-encephalopathy-caused-by-liquefied-gas-exposure-report-of-one-case
#2
Luis Cartier R, Andrés Gallardo V
Liquefied hydrocarbon gas, such as propane is considered safe. However there are reports that voluntary exposure to liquefied gas at least could originate hallucinatory states. We report a 20 years old woman who was found in a coma with extensor muscle hypertonia, brisk tendon reflexes and extensor plantar (Babinski) responses after being exposed to propane gas. The brain magnetic resonance imaging (MRI) showed lesions in both hippocampi and white matter in the oval center. The patient had a normal oxygen saturation of 98%, a carboxyhemoglobin of 1...
August 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/27899316/inhibition-or-ablation-of-transglutaminase-2-impairs-astrocyte-migration
#3
Alina Monteagudo, Changyi Ji, Abdullah Akbar, Jeffrey W Keillor, Gail V W Johnson
Astrocytes play numerous complex roles that support and facilitate the function of neurons. Further, when there is an injury to the central nervous system (CNS) they can both facilitate or ameliorate functional recovery depending on the location and severity of the injury. When a CNS injury is relatively severe a glial scar is formed, which is primarily composed of astrocytes. The glial scar can be both beneficial, by limiting inflammation, and detrimental, by preventing neuronal projections, to functional recovery...
November 26, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27878389/spleen-atrophy-related-immune-system-changes-attributed-to-infection-of-angiostrongylus-cantonensis-in-mouse-model
#4
Zhen Liu, Yu Wu, Ying Feng, Feng Wu, Rui-Feng Liu, Li-Fu Wang, Jin-Yi Liang, Jia-Hua Liu, Xi Sun, Zhong-Dao Wu
The spleen is one of the most important peripheral immune organs, which is frequently affected in infectious diseases. Infectious diseases can induce splenic alterations including splenic atrophy and functional alteration, while splenic atrophy may in turn interferes with recovery of infectious diseases. Angiostrongyliasis is an infectious disease by Angiostrongylus cantonensis (A. cantonensis), which invade non-permissive hosts, such as humans and mice, to cause severe damage to the central nervous system (CNS) and acute inflammatory response...
November 22, 2016: Parasitology Research
https://www.readbyqxmd.com/read/27870606/the-application-of-cortical-arousal-assessment-to-control-neuromuscular-fatigue-during-strength-training
#5
Vicente Javier Clemente-Suárez
The author's aim was to analyze the cortical arousal response during a conventional strength training session as a method to assess central nervous system fatigue. Sixteen trained men were recruited to perform the maximum number of training series composed of 6 exercises of 10 repetition each, at the intensity of 70% of the 1 maximum repetition, with a rest period of 2 min between exercises and 5 min between series, until exhaustion. Cortical arousal was measured using the critical flicker fusion threshold before, after warm-up, after each exercises series, after the recovery phase between series, and 15 min and 30 min after finishing the training session...
November 21, 2016: Journal of Motor Behavior
https://www.readbyqxmd.com/read/27869313/the-role-of-the-mir-17-92-cluster-in-neurogenesis-and-angiogenesis-in-the-central-nervous-system-of-adults
#6
REVIEW
Ping Yang, Linghu Cai, Guan Zhang, Zhiqun Bian, Gaofeng Han
It is well known that neurogenesis is not the only concern for the fully functional recovery after brain or spinal cord injury, as it has been shed light on the critical role of angiogenesis in improving neurological functional recovery. Angiogenesis and neurogenesis coordinately interact with each other in the developing and adult brain, during which they may respond to similar mediators and receptors, in which they share a common posttranscriptional regulator: the miR-17-92 cluster. The miR-17-92 cluster was initially described as an oncogene and was later demonstrated to drive key physiological and pathological responses during development and diseases respectively...
November 21, 2016: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27863295/the-effect-of-early-psychological-symptom-severity-on-long-term-functional-recovery-a-secondary-analysis-of-data-from-a-cohort-study-of-minor-injury-patients
#7
Sara F Jacoby, Justine Shults, Therese S Richmond
BACKGROUND: The mental health consequences of injuries can interfere with recovery to pre-injury levels of function and long term wellbeing. OBJECTIVES: The purpose of this study was to explore the relationship between psychological symptoms after minor injury and long-term functional recovery and disability. DESIGN: This exploratory study uses secondary data derived from a longitudinal cohort study of psychological outcomes after minor injury...
November 9, 2016: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/27855369/effect-of-extracellular-vesicles-on-neural-functional-recovery-and-immunologic-suppression-after-rat-cerebral-apoplexy
#8
Beilei Hu, Songfang Chen, Ming Zou, Zhiyong He, Shengmin Shao, Baohua Liu
BACKGROUND: Previous studies have demonstrated that mesenchymal stem cells (MSCs) can promote the recovery of neural function after cerebral apoplexy by secreting multiple cytokines. In addition, cell factor-derived extracellular vesicles play an important role in recovery of neural function. The aim of this study was to determine the effect of extracellular vesicles on neural functional recovery and brain tissue remodeling after cerebral apoplexy in a rat model. METHODS: The rat models with local ischemic stroke was established and three random groups were created...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27844213/b-cell-directed-therapeutics-in-multiple-sclerosis-rationale-and-clinical-evidence
#9
REVIEW
Silke Kinzel, Martin S Weber
Over the last decade, evidence condensed that B cells, B cell-derived plasma cells and antibodies play a key role in the pathogenesis and progression of multiple sclerosis (MS). In many patients with MS, peripheral B cells show signs of chronic activation; within the cerebrospinal fluid clonally expanded plasma cells produce oligoclonal immunoglobulins, which remain a hallmark diagnostic finding. Confirming the clinical relevance of these immunological alterations, recent trials testing anti-CD20-mediated depletion of peripheral B cells showed an instantaneous halt in development of new central nervous system lesions and occurrence of relapses...
December 2016: CNS Drugs
https://www.readbyqxmd.com/read/27833527/intrinsic-axonal-growth-and-the-drive-for-regeneration
#10
REVIEW
Kevin J O'Donovan
Following damage to the adult nervous system in conditions like stroke, spinal cord injury, or traumatic brain injury, many neurons die and most of the remaining spared neurons fail to regenerate. Injured neurons fail to regrow both because of the inhibitory milieu in which they reside as well as a loss of the intrinsic growth capacity of the neurons. If we are to develop effective therapeutic interventions that promote functional recovery for the devastating injuries described above, we must not only better understand the molecular mechanisms of developmental axonal growth in hopes of re-activating these pathways in the adult, but at the same time be aware that re-activation of adult axonal growth may proceed via distinct mechanisms...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27822712/dynasore-improves-motor-function-recovery-via-inhibition-of-neuronal-apoptosis-and-astrocytic-proliferation-after-spinal-cord-injury-in-rats
#11
Gang Li, Feifei Shen, Zhongkai Fan, Yangsong Wang, Xiangquan Kong, Deshui Yu, Xiaodong Zhi, Gang Lv, Yang Cao
Spinal cord injury (SCI) is a common and devastating central nervous system insult which lacks efficient treatment. Our previous experimental findings indicated that dynamin-related protein 1 (Drp1) mediates mitochondrial fission during SCI, and inhibition of Drp1 plays a significant protective effect after SCI in rats. Dynasore inhibits GTPase activity at both the plasma membrane (dynamin 1, 2) and the mitochondria membrane (Drp1). The aim of the present study was to investigate the beneficial effects of dynasore on SCI and its underlying mechanism in a rat model...
November 7, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27818358/the-age-factor-in-axonal-repair-after-spinal-cord-injury-a-focus-on-neuron-intrinsic-mechanisms
#12
REVIEW
Cédric G Geoffroy, Jessica M Meves, Binhai Zheng
Age is an important consideration for recovery and repair after spinal cord injury. Spinal cord injury is increasingly affecting the middle-aged and aging populations. Despite rapid progress in research to promote axonal regeneration and repair, our understanding of how age can modulate this repair is rather limited. In this review, we discuss the literature supporting the notion of an age-dependent decline in axonal growth after central nervous system (CNS) injury. While both neuron-intrinsic and extrinsic factors are involved in the control of axon growth after injury, here we focus on possible intrinsic mechanisms for this age-dependent decline...
November 3, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27818352/exercise-combined-with-low-level-gabaa-receptor-inhibition-up-regulates-the-expression-of-neurotrophins-in-the-motor-cortex
#13
Kazuma Takahashi, Hiroshi Maejima, Gaku Ikuta, Hiroki Mani, Tadayoshi Asaka
Neurotrophins play a crucial role in neuroplasticity, neurogenesis, and neuroprotection in the central nervous system. Aerobic exercise is known to increase the expression of BDNF in the cerebral cortex. Several animal studies have evaluated the tonic inhibition of GABAergic synapses to enhance hippocampal plasticity as well as learning and memory, whereas the effects of GABAergic inhibition on plasticity in the cerebral cortex related to motor learning are not well characterized. The objective of the present study was to examine the interactive effect of low-level GABAA receptor inhibition and exercise on the expression of neurotrophins including BDNF in the murine motor cortex...
November 4, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27818349/differential-regenerative-ability-of-sensory-and-motor-neurons
#14
REVIEW
Menghon Cheah, James W Fawcett, Barbara Haenzi
After injury, the adult mammalian central nervous system (CNS) lacks long-distance axon regeneration. This review discusses the similarities and differences of sensory and motor neurons, seeking to understand how to achieve functional sensory and motor regeneration. As these two types of neurons respond differently to axotomy, growth environment and treatment, the future challenge will be on how to achieve full recovery in a way that allows regeneration of both types of fibers simultaneously.
November 3, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27815997/rapid-and-efficient-crossing-blood-brain-barrier-hydrophobic-drug-delivery-system-based-on-propionylated-amylose-helix-nanoclusters
#15
Wei Gao, Yongchun Liu, Guixia Jing, Ke Li, Yuan Zhao, Baoyong Sha, Qiang Wang, Daocheng Wu
A novel strategy of rapid transport across the blood-brain barrier (BBB) via phosphatidylethanolamine-triggered release is developed through both molecular dynamics (MD) simulation and experiments. Hydrophobic drugs, namely, propofol, iodine, and 1,1'-dioctadecyltetramethyl indotricarbocyanine iodide, were loaded with propionylated amylose helix (HLPAH) nanoclusters to form PLPAH, ILPAH, and DLPAH nanoclusters, respectively. These clusters were subjected to MD simulation, structure measurement, in vitro triggered study, in vivo DLPAH imaging, and analysis of PLPAH sedative effects on rabbits...
October 28, 2016: Biomaterials
https://www.readbyqxmd.com/read/27812073/eosinophilic-granulomatosis-with-polyangiitis-presenting-with-multiple-intracerebral-haemorrhages-a-case-report
#16
Zafar Ullah, Zain Ul Abideen, Raja Farhat Shoaib, Arsalan Ahmad, Qamar Zaman, Rashid Nazir
Eosinophilic granulomatosis with polyangiitis also known as Churgg-Strauss syndrome is a systemic multi system vasculitis. Neurological involvement is mostly in the form of peripheral nervous system disease. Central nervous system involvement is relatively uncommon with most cases being secondary to ischaemic infarctions. Intra cerebral haemorrhage is rare and is usually in the form of solitary haemorrhagic lesions. Multiple intra cerebral haemorrhages are exceptionally rare with only one case documented in medical literature...
November 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27803046/cd8-encephalitis-a-severe-but-treatable-hiv-related-acute-encephalopathy
#17
Angeliki Zarkali, Nikos Gorgoraptis, Robert Miller, Laurence John, Ashirwad Merve, Stefanie Thust, Rolf Jager, Dimitri Kullmann, Orlando Swayne
Rapidly progressive encephalopathy in an HIV-positive patient presents a major diagnostic and management challenge. CD8+ encephalitis is a severe but treatable form of HIV-related acute encephalopathy, characterised by diffuse perivascular and intraparenchymal CD8+ lymphocytic infiltration. It can occur in patients who are apparently stable on antiretroviral treatment and probably results from viral escape into the central nervous system. Treatment, including high-dose corticosteroids, can give an excellent neurological outcome, even in people with severe encephalopathy and a very poor initial neurological status...
November 1, 2016: Practical Neurology
https://www.readbyqxmd.com/read/27797811/il4i1-augments-cns-remyelination-and-axonal-protection-by-modulating-t-cell-driven-inflammation
#18
Konstantina Psachoulia, Kelly A Chamberlain, Dongeun Heo, Stephanie E Davis, Jeremiah D Paskus, Sonia E Nanescu, Jeffrey L Dupree, Thomas A Wynn, Jeffrey K Huang
SEE PLUCHINO AND PERUZZOTTI-JAMETTI DOI101093/AWW266 FOR A SCIENTIFIC COMMENTARY ON THIS ARTICLE: Myelin regeneration (remyelination) is a spontaneous process that occurs following central nervous system demyelination. However, for reasons that remain poorly understood, remyelination fails in the progressive phase of multiple sclerosis. Emerging evidence indicates that alternatively activated macrophages in central nervous system lesions are required for oligodendrocyte progenitor differentiation into remyelinating oligodendrocytes...
December 2016: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/27794548/local-resiniferatoxin-induces-long-lasting-analgesia-in-a-rat-model-of-full-thickness-thermal-injury
#19
Margaux M Salas, John L Clifford, Jessica R Hayden, Michael J Iadarola, Dayna L Averitt
OBJECTIVE:  Opioid-based analgesics are a major component of the lengthy pain management of burn patients, including military service members, but are problematic due to central nervous system-mediated side effects. Peripheral analgesia via targeted ablation of nociceptive nerve endings that express the transient receptor potential vanilloid channel 1 (TRPV1) may provide an improved approach. We hypothesized that local injection of the TRPV1 agonist resiniferatoxin (RTX) would produce long-lasting analgesia in a rat model of pain associated with burn injury...
October 29, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/27789190/quantitative-analysis-of-organophosphate-insecticide-metabolites-in-urine-extracted-from-disposable-diapers-of-toddlers-in-japan
#20
Naoko Oya, Yuki Ito, Keisuke Hioki, Yuya Asai, Arisa Aoi, Yuka Sugiura, Jun Ueyama, Tomoko Oguri, Sayaka Kato, Takeshi Ebara, Michihiro Kamijima
BACKGROUND AND AIM: Epidemiological studies linking insecticide exposure to childhood neurodevelopment have been gaining global attention. Despite the rapid development of the central nervous system in early childhood, studies regarding the biological monitoring of insecticide exposure in diapered children are limited. In this study, we aimed to clarify the concentrations of organophosphate (OP) insecticide metabolites in toddler urine extracted from disposable diapers in Japan. METHODS: We recruited diapered children from the Aichi regional subcohort participants of the Japan Environment and Children's Study (JECS) at the time of their 18-month checkup...
October 20, 2016: International Journal of Hygiene and Environmental Health
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