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Central nervous system recovery

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https://www.readbyqxmd.com/read/28093477/differential-presynaptic-atp-supply-for-basal-and-high-demand-transmission
#1
Courtney Sobieski, Michael J Fitzpatrick, Steven Mennerick
The relative contributions of glycolysis and oxidative phosphorylation to neuronal presynaptic energy demands are unclear. In rat hippocampal neurons, ATP production by either glycolysis or oxidative phosphorylation alone sustained basal evoked synaptic transmission for up to 20 min. However, combined inhibition of both ATP sources abolished evoked transmission. Neither action potential propagation failure nor depressed Ca(2+)-influx explained loss of evoked synaptic transmission. Rather, inhibition of ATP synthesis caused massive spontaneous vesicle exocytosis, followed by arrested endocytosis, accounting for the disappearance of evoked postsynaptic currents (PSCs)...
January 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28089819/lentivirus-mediated-silencing-of-the-ctgf-gene-suppresses-the-formation-of-glial-scar-tissue-in-a-rat-model-of-spinal-cord-injury
#2
Yuan Wang, Qin-Jie Kong, Jing-Chuan Sun, Yong Yang, Hai-Bo Wang, Qiang Zhang, Jian-Gang Shi
BACKGROUND CONTEXT: - One of the many reactive changes following an Spinal cord injury (SCI) is the formation of a glial scar, a reactive cellular process whereby glial cells accumulate and surround central nervous system (CNS) injury sites to seal in the wound. Thus the inhibition of glial scar is of great importance for SCI recovery. PURPOSE: - This study aimed to explore the effect of lentivirus-mediated silencing of the CTGF gene on the formation of glial scar tissue in a rat model of spinal cord injury (SCI)...
January 9, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28086758/toxoplasmosis-associated-iris-involving-the-cns-a-case-report-with-longitudinal-analysis-of-t-cell-subsets
#3
Rita Rb-Silva, Claudia Nobrega, Eugénia Reiriz, Soraia Almeida, Rui Sarmento-Castro, Margarida Correia-Neves, Ana Horta
BACKGROUND: HIV-infected patients may present an unforeseen clinical worsening after initiating antiretroviral therapy known as immune reconstitution inflammatory syndrome (IRIS). This syndrome is characterized by a heightened inflammatory response toward infectious or non-infectious triggers, and it may affect different organs. Diagnosis of IRIS involving the central nervous system (CNS-IRIS) is challenging due to heterogeneous manifestations, absence of biomarkers to identify this condition, risk of long-term sequelae and high mortality...
January 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28075461/resistance-of-interleukin-6-to-the-extracellular-inhibitory-environment-promotes-axonal-regeneration-and-functional-recovery-following-spinal-cord-injury
#4
Gang Yang, Wen-Yuan Tang
Interleukin-6 (IL)-6 was originally discovered as a factor that contributes to the secondary pathological and inflammatory response in the central nervous system (CNS) following injury. However, accumulating evidence suggests that IL-6 is also involved in functional and structural recovery following CNS injury by promoting axonal sprou-ting. This suggests a potential dual role of IL-6 in CNS injury. However, the definitive function of IL-6 in neural injury and the corresponding underlying mechanisms are still topics of controversy...
February 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28070857/a-small-organic-compound-mimicking-the-l1-cell-adhesion-molecule-promotes-functional-recovery-after-spinal-cord-injury-in-zebrafish
#5
Sudhanshu Sahu, Zhihua Zhang, Rong Li, Junkai Hu, Huifan Shen, Gabriele Loers, Yanqin Shen, Melitta Schachner
Tacrine is a small organic compound that was discovered to mimic the functions of the neural cell adhesion molecule L1 by promoting the cognate functions of L1 in vitro, such as neuronal survival, neuronal migration, neurite outgrowth, and myelination. Based on studies indicating that L1 enhances functional recovery in different central and peripheral nervous system disease paradigms of rodents, it deemed interesting to investigate the beneficial role of tacrine in the attractive zebrafish animal model, by evaluating functional recovery after spinal cord injury...
January 9, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28062430/rare-and-unusual-case-of-polyarteritis-nodosa-involving-the-gastrointestinal-tract-leading-to-bowel-gangrene
#6
Arvind Vashdev Jagwani, Nik Qisti Fathi, Ruhi Fadzlyana Jailani, Andee Dzulkarnaen Zakaria
Polyarteritis nodosa (PAN) is a systemic necrotising vasculitis preferentially targeting medium-sized arteries and not related with glomerulonephritis or small vessel involvement. Clinical manifestations of PAN are multisystem. The gastrointestinal, renal, cardiac, musculoskeletal, skin and central nervous systems may be involved. The aetiology remains unknown, and the ensuing vasculitis may lead to aneurysm formation and thrombosis in any organs of the body with resultant ischaemia. PAN of the intestines is a relatively common manifestation of this disease but rarely causes bowel ischaemia resulting in necrosis...
January 6, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28057555/reactive-astrogliosis-in-stroke-contributions-of-astrocytes-to-recovery-of-neurological-function
#7
REVIEW
Neil R Sims, Wai Ping Yew
Alterations in neuronal connectivity, particularly in the "peri-infarct" tissue adjacent to the region of ischemic damage, are important contributors to the spontaneous recovery of function that commonly follows stroke. Peri-infarct astrocytes undergo reactive astrogliosis and play key roles in modulating the adaptive responses in neurons. This reactive astrogliosis shares many features with that induced by other forms of damage to the central nervous system but also differs in details that potentially influence neurological recovery...
January 2, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28039763/spatial-and-temporal-arrangement-of-neuronal-intrinsic-and-extrinsic-mechanisms-controlling-axon-regeneration
#8
REVIEW
Andrea Tedeschi, Frank Bradke
Axon regeneration and neuronal tissue repair varies across animal lineages as well as in the mammalian central and peripheral nervous systems. While the peripheral nervous system retains the ability to self-repair, the majority of axons in the adult mammalian central nervous system (CNS) fail to reactivate intrinsic growth programs after injury. Recent findings, however, suggest that long-distance axon regeneration, neuronal circuit assembly and recovery of functions in the adult mammalian CNS are possible...
December 28, 2016: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28035034/identification-of-suvorexant-in-urine-using-liquid-chromatography-quadrupole-time-of-flight-mass-spectrometry-lc-q-tof-ms
#9
Sydney Sullinger, Kelsie Bryand, Sarah Kerrigan
Suvorexant (Belsomra(®)) is a new hypnotic drug with a novel mechanism of action. In prescribed doses of 10 mg before bedtime, the drug produces rapid onset of sleep by inhibiting the orexin neurons of the arousal system, promoting decreased wakefulness. Suvorexant is a potent and highly selective dual orexin receptor antagonist. Sedative hypnotics are of forensic importance due to their widespread use, potential for additive effects with other central nervous system depressants, impairing effects and potential for misuse...
December 29, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28025664/characterization-of-the-neurological-diseases-associated-with-mycoplasma-pneumoniae-infection-and-anti-glycolipid-antibodies
#10
Motoi Kuwahara, Makoto Samukawa, Tae Ikeda, Miyuki Morikawa, Rino Ueno, Yukihiro Hamada, Susumu Kusunoki
Mycoplasma pneumoniae infection often causes various neurological complications of both the central nervous system (CNS) and the peripheral nervous system. We retrospectively investigated the IgM and IgG antibodies to nine glycolipids [GM1, GM2, GM3, GD1a, GD1b, GD3, GT1b, GQ1b, and Gal-C (galactocerebroside)] and clinical features in neurological diseases associated with M. pneumoniae infection diagnosed in multiple hospitals throughout Japan between September 2010 and March 2012. Of the 46 patients with neurological diseases associated with M...
December 26, 2016: Journal of Neurology
https://www.readbyqxmd.com/read/28025113/selecting-optimal-combinations-of-transcription-factors-to-promote-axon-regeneration-why-mechanisms-matter
#11
REVIEW
Ishwariya Venkatesh, Murray G Blackmore
Recovery from injuries to the central nervous system, including spinal cord injury, is constrained in part by the intrinsically low ability of many CNS neurons to mount an effective regenerative growth response. To improve outcomes, it is essential to understand and ultimately reverse these neuron-intrinsic constraints. Genetic manipulation of key transcription factors (TFs), which act to orchestrate production of multiple regeneration-associated genes, has emerged as a promising strategy. It is likely that no single TF will be sufficient to fully restore neuron-intrinsic growth potential, and that multiple, functionally interacting factors will be needed...
December 23, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/28018472/concurrency-of-guillain-barre-syndrome-and-acute-transverse-myelitis-a-case-report-and-review-of-literature
#12
Orkun Tolunay, Tamer Çelik, Ümit Çelik, Mustafa Kömür, Zeynep Tanyeli, Abdurrahman Sönmezler
Guillain-Barré syndrome and acute transverse myelitis manifest as demyelinating diseases of the peripheral and central nervous system. Concurrency of these two disorders is rarely documented in literature. A 4-year-old girl presenting with cough, fever, and an impaired walking ability was admitted to hospital. She had no previous complaints in her medical history. A physical examination revealed lack of muscle strength of the lower extremities and deep tendon reflexes. MRI could not be carried out due to technical problems; therefore, both Guillain-Barré syndrome and acute transverse myelitis were considered for the diagnosis...
November 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28009767/transient-sensory-recovery-in-stroke-patients-after-pulsed-radiofrequency-electrical-stimulation-on-dorsal-root-ganglia-a-case-series
#13
Seza Apiliogullari, Ilknur A Gezer, Funda Levendoglu
INTRODUCTION: The integrity of the somatosensory system is important for motor recovery and neuroplasticity after strokes. Peripheral stimulation or central stimulation in patients with central nervous system lesions can be an effective modality in improving function and in facilitating neuroplasticity. CASE REPORT: We present 2 hemiplegic cases with sensory motor deficit and the result of the pulsed radiofrequency (PRF) electrical stimulation to the dorsal root ganglia...
January 2017: Neurologist
https://www.readbyqxmd.com/read/28007647/rewiring-the-spinal-cord-direct-and-indirect-strategies
#14
REVIEW
Maria Teresa Dell'Anno, Stephen M Strittmatter
Spinal cord injury is currently incurable. Treatment is limited to minimizing secondary complications and maximizing residual function by rehabilitation. Neurologic recovery is prevented by the poor intrinsic regenerative capacity of neurons in the adult central nervous system and by the presence of growth inhibitors in the adult brain and spinal cord. Here we identify three approaches to rewire the spinal cord after injury: axonal regeneration (direct endogenous reconnection), axonal sprouting (indirect endogenous reconnection) and neural stem cell transplantation (indirect exogenous reconnection)...
December 19, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/28007548/enhanced-neuroprotection-with-decellularized-brain-extracellular-matrix-containing-bfgf-after-intracerebral-transplantation-in-parkinson-s-disease-rat-model
#15
Qian Lin, Ho Lun Wong, Fu-Rong Tian, Ya-Dong Huang, Jie Xu, Jing-Jing Yang, Pian-Pian Chen, Zi-Liang Fan, Cui-Tao Lu, Ying-Zheng Zhao
Extracellular matrix-based biomaterials have many advantages over synthetic polymer materials for regenerative medicine applications. In central nervous system (CNS), basic fibroblast growth factor (bFGF) is widely studied as a potential agent for Parkinson's disease (PD). However, the poor stability of bFGF hampered its clinical use. In this study, CNS-derived biologic scaffold containing bFGF was used to enhance and extend the neuroprotective effect of bFGF on PD targeted therapy. Decellularized brain extracellular matrix (dcBECM) was prepared by chemical extraction...
December 20, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27994358/retrospective-analysis-of-multiplex-polymerase-chain-reaction-based-molecular-diagnostics-ses-in-70-patients-with-suspected-central-nervous-system-infections-a-single-center-study
#16
Rama Krishnan Tiruppur Chinnappan Ramalingam, Dipanjan Chakraborty
BACKGROUND: Central nervous system (CNS) infections present a grave health care challenge due to high morbidity and mortality. Clinical findings and conventional laboratory assessments are not sufficiently distinct for specific etiologic diagnosis. Identification of pathogens is a key to appropriate therapy. AIM: In this retrospective observational study, we evaluated the efficacy and clinical utility of syndrome evaluation system (SES) for diagnosing clinically suspected CNS infections...
October 2016: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/27994070/characterization-of-meningeal-type-2-innate-lymphocytes-and-their-response-to-cns-injury
#17
Sachin P Gadani, Igor Smirnov, Ashtyn T Smith, Christopher C Overall, Jonathan Kipnis
The meningeal space is occupied by a diverse repertoire of immune cells. Central nervous system (CNS) injury elicits a rapid immune response that affects neuronal survival and recovery, but the role of meningeal inflammation remains poorly understood. Here, we describe type 2 innate lymphocytes (ILC2s) as a novel cell type resident in the healthy meninges that are activated after CNS injury. ILC2s are present throughout the naive mouse meninges, though are concentrated around the dural sinuses, and have a unique transcriptional profile...
December 19, 2016: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27994015/newly-formed-endothelial-cells-regulate-myeloid-cell-activity-following-spinal-cord-injury-via-expression-of-cd200-ligand
#18
Merav Cohen, Hila Ben-Yehuda, Ziv Porat, Catarina Raposo, Siamon Gordon, Michal Schwartz
: The central nervous system (CNS) is endowed with several immune-related mechanisms that contribute to its protection and maintenance in homeostasis and under pathology. Here, we discovered an additional mechanism that controls inflammatory responses within the CNS milieu under injurious conditions, involving CD200 ligand (CD200L) expressed by newly-formed endothelial cells. We observed that CD200L is constitutively expressed in the mouse healthy CNS by endothelial cells of the blood-cerebrospinal fluid barrier and of the spinal cord meninges, but not by the endothelium of the blood-spinal cord barrier...
December 19, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27992989/-facial-nerve-injuries-cause-changes-in-central-nervous-system-microglial-cells
#19
Jeimmy Cerón, Julieta Troncoso
INTRODUCTION: Our research group has described both morphological and electrophysiological changes in motor cortex pyramidal neurons associated with contralateral facial nerve injury in rats. However, little is known about those neural changes, which occur together with changes in surrounding glial cells. OBJECTIVE: To characterize the effect of the unilateral facial nerve injury on microglial proliferation and activation in the primary motor cortex. MATERIALS AND METHODS: We performed immunohistochemical experiments in order to detect microglial cells in brain tissue of rats with unilateral facial nerve lesion sacrificed at different times after the injury...
December 1, 2016: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/27986809/urokinase-type-plasminogen-activator-upa-binding-to-the-upa-receptor-upar-promotes-axonal-regeneration-in-the-central-nervous-system
#20
Paola Merino, Ariel Diaz, Valerie Jeanneret, Fang Wu, Enrique Torre, Lihong Cheng, Manuel Yepes
Axonal injury is a common cause of neurological dysfunction. Unfortunately, in contrast to axons from the peripheral nervous system, the limited capacity of regeneration of central nervous system (CNS) axons is a major obstacle for functional recovery in patients suffering neurological diseases that involve the subcortical white matter. Urokinase-type plasminogen activator (uPA) is a serine proteinase that upon binding to the urokinase-type plasminogen activator receptor (uPAR) catalyzes the conversion of plasminogen into plasmin on the cell surface...
December 16, 2016: Journal of Biological Chemistry
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