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Central neuroplasticity

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https://www.readbyqxmd.com/read/29149149/decreased-regional-grey-matter-volume-in-women-with-chronic-whiplash-associated-disorders-relationships-with-cognitive-deficits-and-disturbed-pain-processing
#1
Iris Coppieters, Robby De Pauw, Karen Caeyenberghs, Lieven Danneels, Jeroen Kregel, Astrid Pattyn, Mira Meeus, Barbara Cagnie
BACKGROUND: Patients with chronic whiplash-associated disorders (CWAD) are characterized by pain of traumatic origin, cognitive deficits, and central sensitization (CS). Previous neuroimaging studies revealed altered grey matter volume (GMV) in mild traumatic brain injury patients and chronic pain conditions also characterized by CS. It can therefore be hypothesized that GMV alterations also play a role in the persistent complaints of CWAD. However, brain alterations remain poorly investigated in these patients...
November 2017: Pain Physician
https://www.readbyqxmd.com/read/29111577/applications-of-acupuncture-therapy-in-modulating-plasticity-of-central-nervous-system
#2
REVIEW
Ling-Yong Xiao, Xue-Rui Wang, Ye Yang, Jing-Wen Yang, Yan Cao, Si-Ming Ma, Tian-Ran Li, Cun-Zhi Liu
OBJECTIVE: Acupuncture is widely applied for treatment of various neurological disorders. This manuscript will review the preclinical evidence of acupuncture in mediating neural plasticity, the mechanisms involved. MATERIALS AND METHODS: We searched acupuncture, plasticity, and other potential related words at the following sites: PubMed, EMBASE, Cochrane Library, Chinese National Knowledge Infrastructure (CNKI), and VIP information data base. The following keywords were used: acupuncture, electroacupuncture, plasticity, neural plasticity, neuroplasticity, neurogenesis, neuroblast, stem cell, progenitor cell, BrdU, synapse, synapse structure, synaptogenesis, axon, axon regeneration, synaptic plasticity, LTP, LTD, neurotrophin, neurotrophic factor, BDNF, GDNF, VEGF, bFGF, EGF, NT-3, NT-4, NT-5, p75NTR, neurotransmitter, acetylcholine, norepinephrine, noradrenaline, dopamine, monamine...
November 7, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/29105941/assessment-and-manifestation-of-central-sensitisation-across-different-chronic-pain-conditions
#3
L Arendt-Nielsen, B Morlion, S Perrot, A Dahan, A Dickenson, H G Kress, C Wells, D Bouhassira, A Mohr Drewes
Different neuroplastic processes can occur along the nociceptive pathways and may be important in the transition from acute to chronic pain and for diagnosis and development of optimal management strategies. The neuroplastic processes may result in gain (sensitisation) or loss (desensitisation) of function in relation to the incoming nociceptive signals. Such processes play important roles in chronic pain, and although the clinical manifestations differ across condition processes, they share some common mechanistic features...
November 5, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29097049/the-absence-of-resting-state-high-gamma-cross-frequency-coupling-in-patients-with-tinnitus
#4
Min-Hee Ahn, Sung Kwang Hong, Byoung-Kyong Min
Tinnitus is a psychoacoustic phantom perception of currently unknown neuropathology. Despite a growing number of post-stimulus tinnitus studies, uncertainty still exists regarding the neural signature of tinnitus in the resting-state brain. In the present study, we used high-gamma cross-frequency coupling and a Granger causality analysis to evaluate resting-state electroencephalographic (EEG) data in healthy participants and patients with tinnitus. Patients with tinnitus lacked robust frontal delta-phase/central high-gamma-amplitude coupling that was otherwise clearly observed in healthy participants...
October 30, 2017: Hearing Research
https://www.readbyqxmd.com/read/29021765/enhancing-neuroplasticity-to-augment-cognitive-remediation-in-schizophrenia
#5
REVIEW
Carol Jahshan, Yuri Rassovsky, Michael F Green
There is a burgeoning need for innovative treatment strategies to improve the cognitive deficits in schizophrenia. Cognitive remediation (CR) is effective at the group level, but the variability in treatment response is large. Given that CR may depend on intact neuroplasticity to produce cognitive gains, it is reasonable to combine it with strategies that harness patients' neuroplastic potential. In this review, we discuss two non-pharmacological approaches that can enhance neuroplasticity and possibly augment the effects of CR in schizophrenia: physical exercise and transcranial direct current stimulation (tDCS)...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29019708/effects-of-long-term-exercise-and-low-level-inhibition-of-gabaergic-synapses-on-motor-control-and-the-expression-of-bdnf-in-the-motor-related-cortex
#6
Takahiro Inoue, Shuta Ninuma, Masataka Hayashi, Akane Okuda, Tadayoshi Asaka, Hiroshi Maejima
Objectives Brain-derived neurotrophic factor (BDNF) plays important roles in neuroplasticity in the brain. The objective of this study was to examine the effects of long-term exercise combined with low-level inhibition of GABAergic synapses on motor control and the expression of BDNF in the motor-related cortex. Methods ICR mice were divided into four groups based on the factors exercise and GABAA receptor inhibition. We administered the GABAA receptor antagonist bicuculline intraperitoneally (0.25 mg/kg)...
October 11, 2017: Neurological Research
https://www.readbyqxmd.com/read/28977718/sustained-cell-body-reactivity-and-loss-of-neun-in-a-subset-of-axotomized-bulbospinal-neurons-after-a-chronic-high-cervical-spinal-cord-injury
#7
Fannie Darlot, Stéphane Vinit, Valéry Matarazzo, Anne Kastner
Following central nervous system lesion, the ability of injured axons to regrowth may depend on the level and duration of the injured cell body response (CBR). Therefore, in order to investigate whether axotomized brainstem neurons maintain a durable growth-competent state after spinal cord injury, we studied the effect of a chronic C2 hemisection in rats on the expression of various CBR markers involved in axon regeneration, such as c-Jun, ATF-3, HSP27, NO synthase (NOS), and also of the neural mature phenotype marker NeuN, in the bulbospinal respiratory neurons as compared to the Gigantocellularis nucleus...
October 4, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28971481/transcranial-magnetic-stimulation-studies-in-complex-regional-pain-syndrome-type-i-a-review
#8
REVIEW
R Nardone, F Brigo, Y Höller, L Sebastianelli, V Versace, L Saltuari, P Lochner, E Trinka
The sensory and motor cortical representation corresponding to the affected limb is altered in patients with complex regional pain syndrome (CRPS). Transcranial magnetic stimulation (TMS) represents a useful non-invasive approach for studying cortical physiology. If delivered repetitively, TMS can also modulate cortical excitability and induce long-lasting neuroplastic changes. In this review, we performed a systematic search of all studies using TMS to explore cortical excitability/plasticity and repetitive TMS (rTMS) for the treatment of CRPS...
October 3, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/28967356/pain-sensitisation-in-osteoarthritis
#9
REVIEW
Lars Arendt-Nielsen
Treating chronic musculoskeletal pain, and chronic joint pain (osteoarthritis (OA)) in particular, is challenging as the peripheral and central pain mechanisms are not fully discovered, and safe and as efficient analgesic drugs are not available. In general, the preclinical models of OA are limited to provide fundamental understanding of the pain mechanisms involved in patients with chronic joint pain (1). The pain associated with joint discomfort is highly variable, often underestimated by clinicians, and shows only modest association with crude radiological scorings...
September 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28966631/primary-cilia-as-a-novel-horizon-between-neuron-and-environment
#10
REVIEW
Gregory W Kirschen, Qiaojie Xiong
The primary cilium, a hair-like sensory organelle found on most mammalian cells, has gained recent attention within the field of neuroscience. Although neural primary cilia have been known to play a role in embryonic central nervous system patterning, we are just beginning to appreciate their importance in the mature organism. After several decades of investigation and controversy, the neural primary cilium is emerging as an important regulator of neuroplasticity in the healthy adult central nervous system...
August 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28960184/fragile-x-syndrome
#11
REVIEW
Randi J Hagerman, Elizabeth Berry-Kravis, Heather Cody Hazlett, Donald B Bailey, Herve Moine, R Frank Kooy, Flora Tassone, Ilse Gantois, Nahum Sonenberg, Jean Louis Mandel, Paul J Hagerman
Fragile X syndrome (FXS) is the leading inherited form of intellectual disability and autism spectrum disorder, and patients can present with severe behavioural alterations, including hyperactivity, impulsivity and anxiety, in addition to poor language development and seizures. FXS is a trinucleotide repeat disorder, in which >200 repeats of the CGG motif in FMR1 leads to silencing of the gene and the consequent loss of its product, fragile X mental retardation 1 protein (FMRP). FMRP has a central role in gene expression and regulates the translation of potentially hundreds of mRNAs, many of which are involved in the development and maintenance of neuronal synaptic connections...
September 29, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28928195/reach-study-protocol-of-a-randomised-trial-of-rehabilitation-very-early-in-congenital-hemiplegia
#12
Roslyn N Boyd, Jenny Ziviani, Leanne Sakzewski, Iona Novak, Nadia Badawi, Kerstin Pannek, Catherine Elliott, Susan Greaves, Andrea Guzzetta, Koa Whittingham, Jane Valentine, Cathy Morgan, Margaret Wallen, Ann-Christin Eliasson, Lisa Findlay, Robert Ware, Simona Fiori, Stephen Rose
OBJECTIVES: Congenital hemiplegia is the most common form of cerebral palsy (CP). Children with unilateral CP show signs of upper limb asymmetry by 8 months corrected age (ca) but are frequently not referred to therapy until after 12 months ca. This study compares the efficacy of infant-friendly modified constraint-induced movement therapy (Baby mCIMT) to infant friendly bimanual therapy (Baby BIM) on upper limb, cognitive and neuroplasticity outcomes in a multisite randomised comparison trial...
September 18, 2017: BMJ Open
https://www.readbyqxmd.com/read/28912688/a-shift-from-a-pivotal-to-supporting-role-for-the-growth-associated-protein-gap-43-in-the-coordination-of-axonal-structural-and-functional-plasticity
#13
REVIEW
Matthew R Holahan
In a number of animal species, the growth-associated protein (GAP), GAP-43 (aka: F1, neuromodulin, B-50, G50, pp46), has been implicated in the regulation of presynaptic vesicular function and axonal growth and plasticity via its own biochemical properties and interactions with a number of other presynaptic proteins. Changes in the expression of GAP-43 mRNA or distribution of the protein coincide with axonal outgrowth as a consequence of neuronal damage and presynaptic rearrangement that would occur following instances of elevated patterned neural activity including memory formation and development...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28853161/jaw-sensorimotor-control-in-healthy-adults-and-effects-of-aging
#14
REVIEW
Limor Avivi-Arber, Barry J Sessle
The orofacial sensorimotor system is a unique system significantly distinguished from the spinal sensorimotor system. The jaw muscles are involved in mastication, swallowing and articulatory speech movements and their integration with respiration. These sensorimotor functions are vital for sustaining life and necessitate complex neuromuscular processing to provide for exquisite sensorimotor control of numerous orofacial muscles. The function of the jaw muscles in relation to sensorimotor control of these movements may be subject to aging-related declines...
August 29, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28832396/monomethyl-fumarate-inhibits-pain-behaviors-and-amygdala-activity-in-a-rat-arthritis-model
#15
Hyunyoung Kim, Jeremy Thompson, Guangchen Ji, Vadivel Ganapathy, Volker Neugebauer
Neuroplasticity in the amygdala, a brain center for emotions, leads to increased neuronal activity and output that can generate emotional-affective behaviors and modulate nocifensive responses. Mechanisms of increased activity in the amygdala output region (central nucleus, CeA) include increased reactive oxygen species, and so we explored beneficial effects of monomethyl fumarate (MMF), which can have neuroprotective effects through the nuclear factor (erythroid-derived 2)-like 2 (Nrf2) antioxidant response pathway...
December 2017: Pain
https://www.readbyqxmd.com/read/28813934/a-hybrid-brain-machine-interface-based-on-eeg-and-emg-activity-for-the-motor-rehabilitation-of-stroke-patients
#16
Andrea Sarasola-Sanz, Nerea Irastorza-Landa, Eduardo Lopez-Larraz, Carlos Bibian, Florian Helmhold, Doris Broetz, Niels Birbaumer, Ander Ramos-Murguialday
Including supplementary information from the brain or other body parts in the control of brain-machine interfaces (BMIs) has been recently proposed and investigated. Such enriched interfaces are referred to as hybrid BMIs (hBMIs) and have been proven to be more robust and accurate than regular BMIs for assistive and rehabilitative applications. Electromyographic (EMG) activity is one of the most widely utilized biosignals in hBMIs, as it provides a quite direct measurement of the motion intention of the user...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28774646/subcortical-and-cortical-correlates-of-pitch-discrimination-evidence-for-two-levels-of-neuroplasticity-in-musicians
#17
Federica Bianchi, Jens Hjortkjær, Sébastien Santurette, Robert J Zatorre, Hartwig R Siebner, Torsten Dau
Musicians are highly trained to discriminate fine pitch changes but the neural bases of this ability are poorly understood. It is unclear whether such training-dependent differences in pitch processing arise already in the subcortical auditory system or are linked to more central stages. To address this question, we combined psychoacoustic testing with functional MRI to measure cortical and subcortical responses in musicians and non-musicians during a pitch-discrimination task. First, we estimated behavioral pitch-discrimination thresholds for complex tones with harmonic components that were either resolved or unresolved in the auditory system...
July 31, 2017: NeuroImage
https://www.readbyqxmd.com/read/28767698/brain-plasticity-and-sensorimotor-deterioration-as-a-function-of-70-days-head-down-tilt-bed-rest
#18
Vincent Koppelmans, Jacob J Bloomberg, Yiri E De Dios, Scott J Wood, Patricia A Reuter-Lorenz, Igor S Kofman, Roy Riascos, Ajitkumar P Mulavara, Rachael D Seidler
BACKGROUND: Adverse effects of spaceflight on sensorimotor function have been linked to altered somatosensory and vestibular inputs in the microgravity environment. Whether these spaceflight sequelae have a central nervous system component is unknown. However, experimental studies have shown spaceflight-induced brain structural changes in rodents' sensorimotor brain regions. Understanding the neural correlates of spaceflight-related motor performance changes is important to ultimately develop tailored countermeasures that ensure mission success and astronauts' health...
2017: PloS One
https://www.readbyqxmd.com/read/28744214/impairments-of-speech-comprehension-in-patients-with-tinnitus-a-review
#19
REVIEW
Daniela Ivansic, Orlando Guntinas-Lichius, Boris Müller, Gerd F Volk, Gerlind Schneider, Christian Dobel
Tinnitus describes the subjective perception of a sound despite the absence of external stimulation. Being a sensory symptom the majority of studies focusses on the auditory pathway. In the recent years, a series of studies suggested a crucial involvement of the limbic system in the manifestation and development of chronic tinnitus. Regarding cognitive symptoms, several reviews addressed the presence of cognitive impairments in tinnitus as well and concluded that attention and memory processes are affected...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28729845/negative-affect-and-excessive-alcohol-intake-incubate-during-protracted-withdrawal-from-binge-drinking-in-adolescent-but-not-adult-mice
#20
Kaziya M Lee, Michal A Coehlo, Noah R Solton, Karen K Szumlinski
Binge-drinking is common in underage alcohol users, yet we know little regarding the biopsychological impact of binge-drinking during early periods of development. Prior work indicated that adolescent male C57BL6/J mice with a 2-week history of binge-drinking (PND28-41) are resilient to the anxiogenic effects of early alcohol withdrawal. Herein, we employed a comparable Drinking-in-the-Dark model to determine how a prior history of binge-drinking during adolescence (EtOH(adolescents)) influences emotionality (assayed with the light-dark box, marble burying test, and the forced swim test) and the propensity to consume alcohol in later life, compared to animals without prior drinking experience...
2017: Frontiers in Psychology
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