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https://www.readbyqxmd.com/read/28814067/neuro-immune-interactions-in-allergic-diseases-novel-targets-for-therapeutics
#1
Tiphaine Voisin, Amélie Bouvier, Isaac M Chiu
Recent studies have highlighted an emerging role for neuro-immune interactions in mediating allergic diseases. Allergies are caused by an overactive immune response to a foreign antigen. The peripheral sensory and autonomic nervous system densely innervates mucosal barrier tissues including the skin, respiratory tract and gastrointestinal (GI) tract that are exposed to allergens. It is increasingly clear that neurons actively communicate with and regulate the function of mast cells, dendritic cells, eosinophils, Th2 cells and type 2 innate lymphoid cells in allergic inflammation...
June 1, 2017: International Immunology
https://www.readbyqxmd.com/read/28814041/assessing-bradykinesia-in-parkinson-s-disease-using-gyroscope-signals
#2
S Summa, J Tosi, F Taffoni, L Di Biase, M Marano, A Cascio Rizzo, M Tombini, G Di Pino, D Formica
Parkinson's disease (PD) is a neurodegenerative brain disorder that slowly brings on the dopaminergic neurons death. The depletion of the dopaminergic signal causes the onset of motor symptoms such as tremor, bradykinesia and rigidity. Usually, neurologists regularly monitor motor symptoms and motor fluctuations using the MDS-UPDRS part III clinical scale. Nevertheless, to have a more objective and quantitative evaluation, it is possible to assess the cardinal motor symptoms of PD using wearable sensors and portable robotic devices...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813943/conjunctive-rehabilitation-of-multiple-cognitive-domains-for-chronic-stroke-patients-in-virtual-reality
#3
Martina Maier, Nuria Leiva Banuelos, Belen Rubio Ballester, Esther Duarte, Paul F M J Verschure
Classically, cognitive deficits have been studied and treated in isolation from each other. A stroke patient is classified as being memory impaired, having executive dysfunction or showing attentional deficits after which a dedicated rehabilitation therapy is given. Studies seldom looked at the relationship between these different cognitive domains and syndromes, although, there is evidence that they might share common neuronal substrates and do not occur in isolation. Here, we propose a novel rehabilitation method in virtual reality to treat cognitive deficits in conjunction and report the preliminary results of an ongoing randomized controlled clinical trial...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813912/transverse-forces-versus-modified-ashworth-scale-for-upper-limb-flexion-extension-in-para-sagittal-plane
#4
Nitin Seth, Denise Johnson, Hussein A Abdullah
Spasticity is a common impairment following an upper motor neuron lesion in conditions such as stroke and brain injury. A clinical issue is how to best quantify and measure spasticity. Recently, research has been performed to develop new methods of spasticity quantification using various systems. This paper follows up on previous work taking a closer look at the role of transversal forces obtained via rehabilitation robot for motions in the para-sagittal plane. Results from 45 healthy individuals and 40 individuals with acquired brain injury demonstrate that although the passive upper motions are vertical, horizontal forces into and away from the individual's body demonstrate a relationship with the Modified Ashworth Scale...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813843/addition-of-forelimb-training-reduces-gains-from-robotic-gait-training-in-a-rat-model-of-spinal-cord-injury
#5
Nathan D Neckel, Haining Dai, Olga C Rodriguez
To restore locomotor function following spinal cord injury the disrupted descending supraspinal drive needs to be re-connected to regions caudal to the injury. Robotic gait training aims to facilitate recovery by stimulating the proprioceptive networks of the legs in a coordinated walking pattern while the descending supraspinal connections are re-established. In incomplete injuries, it is believed that the interneuronal networks near the injury site form relay circuits to reroute the supraspinal signals through the spared tissue...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813670/nkx2-1-is-required-in-the-embryonic-septum-for-cholinergic-system-development-learning-and-memory
#6
Lorenza Magno, Caswell Barry, Christoph Schmidt-Hieber, Polyvios Theodotou, Michael Häusser, Nicoletta Kessaris
The transcription factor NKX2-1 is best known for its role in the specification of subsets of cortical, striatal, and pallidal neurons. We demonstrate through genetic fate mapping and intersectional focal septal deletion that NKX2-1 is selectively required in the embryonic septal neuroepithelium for the development of cholinergic septohippocampal projection neurons and large subsets of basal forebrain cholinergic neurons. In the absence of NKX2-1, these neurons fail to develop, causing alterations in hippocampal theta rhythms and severe deficiencies in learning and memory...
August 15, 2017: Cell Reports
https://www.readbyqxmd.com/read/28813666/microrna-9-couples-brain-neurogenesis-and-angiogenesis
#7
Romain Madelaine, Steven A Sloan, Nina Huber, James H Notwell, Louis C Leung, Gemini Skariah, Caroline Halluin, Sergiu P Paşca, Gill Bejerano, Mark A Krasnow, Ben A Barres, Philippe Mourrain
In the developing brain, neurons expressing VEGF-A and blood vessels grow in close apposition, but many of the molecular pathways regulating neuronal VEGF-A and neurovascular system development remain to be deciphered. Here, we show that miR-9 links neurogenesis and angiogenesis through the formation of neurons expressing VEGF-A. We found that miR-9 directly targets the transcription factors TLX and ONECUTs to regulate VEGF-A expression. miR-9 inhibition leads to increased TLX and ONECUT expression, resulting in VEGF-A overexpression...
August 15, 2017: Cell Reports
https://www.readbyqxmd.com/read/28813640/innate-immune-signaling-in-the-ventral-tegmental-area-contributes-to-drug-primed-reinstatement-of-cocaine-seeking
#8
Kyle T Brown, Sophia C Levis, Casey E O'Neill, Alexis L Northcutt, Timothy J Fabisiak, Linda R Watkins, Ryan K Bachtell
Cocaine addiction is a chronic relapsing disorder characterized by persistent perturbations to an organism's homeostatic processes that result in maladaptive drug seeking. Although considerable attention has been directed at the consequences of neuronal changes following chronic cocaine taking, few studies have examined the role of microglia, the brain's resident immune cells, following chronic cocaine administration. Toll-Like Receptor 4 (TLR4) is a molecular pattern receptor that recognizes pathogens, danger signals, and xenobiotics and induces proinflammatory signaling in the central nervous system...
August 13, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28813565/selectivity-hyperselectivity-and-the-tuning-of-v1-neurons
#9
Kedarnath P Vilankar, David J Field
In this article, we explore two forms of selectivity in sensory neurons. The first we call classic selectivity, referring to the stimulus that optimally stimulates a neuron. If a neuron is linear, then this stimulus can be determined by measuring the response to an orthonormal basis set (the receptive field). The second type of selectivity we call hyperselectivity; it is either implicitly or explicitly a component of several models including sparse coding, gain control, and some linear-nonlinear models. Hyperselectivity is unrelated to the stimulus that maximizes the response...
August 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28813475/evaluation-of-the-adaptogenic-potential-exerted-by-ginsenosides-rb1-and-rg1-against-oxidative-stress-mediated-neurotoxicity-in-an-in-vitro-neuronal-model
#10
Carlos Fernández-Moriano, Elena González-Burgos, Irene Iglesias, Rafael Lozano, M Pilar Gómez-Serranillos
BACKGROUND: Ginseng (Panax sp.) is a drug with multiple pharmacological actions that has been largely used in traditional medicines for the treatment of many health problems. In the therapy of neurodegenerative disorders, it has been employed due to its capacity to strengthen mental processes by enhancing cognitive performance and psychological function. Current work aimed at evaluating the adaptogenic potential of Rb1 and Rg1 against oxidative-stress mediated degeneration in a model of nervous cells...
2017: PloS One
https://www.readbyqxmd.com/read/28813474/binge-like-sucrose-consumption-reduces-the-dendritic-length-and-complexity-of-principal-neurons-in-the-adolescent-rat-basolateral-amygdala
#11
Masroor Shariff, Paul Klenowski, Michael Morgan, Omkar Patkar, Erica Mu, Mark Bellingham, Arnauld Belmer, Selena E Bartlett
A compelling body of evidence suggests that the worldwide obesity epidemic is underpinned by excessive sugar consumption, typified by the modern western diet. Furthermore, evidence is beginning to emerge of maladaptive changes in the mesolimbic reward pathway of the brain in relation to excess sugar consumption that highlights the importance of examining this neural circuitry in an attempt to understand and subsequently mitigate the associated morbidities with obesity. While the basolateral amygdala (BLA) has been shown to mediate the reinforcing properties of drugs of abuse, it has also been shown to play an important role in affective and motivated behaviours and has been shown to undergo maladaptive changes in response to drugs of abuse and stress...
2017: PloS One
https://www.readbyqxmd.com/read/28813464/representation-of-three-dimensional-space-in-the-auditory-cortex-of-the-echolocating-bat-p-discolor
#12
Wolfgang Greiter, Uwe Firzlaff
The auditory cortex is an essential center for sound localization. In echolocating bats, combination sensitive neurons tuned to specific delays between call emission and echo perception represent target distance. In many bats, these neurons are organized as a chronotopically organized map of echo delay. However, it is still unclear to what extend these neurons can process directional information and thereby form a three-dimensional representation of space. We investigated the representation of three-dimensional space in the auditory cortex of Phyllostomus discolor...
2017: PloS One
https://www.readbyqxmd.com/read/28813412/the-primed-snare-complexin-synaptotagmin-complex-for-neuronal-exocytosis
#13
Qiangjun Zhou, Peng Zhou, Austin L Wang, Dick Wu, Minglei Zhao, Thomas C Südhof, Axel T Brunger
Synaptotagmin, complexin, and neuronal SNARE (soluble N-ethylmaleimide sensitive factor attachment protein receptor) proteins mediate evoked synchronous neurotransmitter release, but the molecular mechanisms mediating the cooperation between these molecules remain unclear. Here we determine crystal structures of the primed pre-fusion SNARE-complexin-synaptotagmin-1 complex. These structures reveal an unexpected tripartite interface between synaptotagmin-1 and both the SNARE complex and complexin. Simultaneously, a second synaptotagmin-1 molecule interacts with the other side of the SNARE complex via the previously identified primary interface...
August 16, 2017: Nature
https://www.readbyqxmd.com/read/28813177/how-single-cell-genomics-is-changing-evolutionary-and-developmental-biology
#14
John C Marioni, Detlev Arendt
The recent flood of single-cell data not only boosts our knowledge of cells and cell types, but also provides new insight into development and evolution from a cellular perspective. For example, assaying the genomes of multiple cells during development reveals developmental lineage trees-the kinship lineage-whereas cellular transcriptomes inform us about the regulatory state of cells and their gradual restriction in potency-the Waddington lineage. Beyond that, the comparison of single-cell data across species allows evolutionary changes to be tracked at all stages of development from the zygote, via different kinds of stem cells, to the differentiating cells...
August 16, 2017: Annual Review of Cell and Developmental Biology
https://www.readbyqxmd.com/read/28813012/inhibitory-effect-of-lycopene-on-amyloid-%C3%AE-induced-apoptosis-in-neuronal-cells
#15
Sinwoo Hwang, Joo Weon Lim, Hyeyoung Kim
Alzheimer's disease (AD) is a fatal neurodegenerative disease. Brain amyloid-β deposition is a crucial feature of AD, causing neuronal cell death by inducing oxidative damage. Reactive oxygen species (ROS) activate NF-κB, which induces expression of Nucling. Nucling is a pro-apoptotic factor recruiting the apoptosome complex. Lycopene is an antioxidant protecting from oxidative stress-induced cell damage. We investigated whether lycopene inhibits amyloid-β-stimulated apoptosis through reducing ROS and inhibiting mitochondrial dysfunction and NF-κB-mediated Nucling expression in neuronal SH-SY5Y cells...
August 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28812939/removing-dysfunctional-mitochondria-from-axons-independent-of-mitophagy-under-pathophysiological-conditions
#16
Mei-Yao Lin, Xiu-Tang Cheng, Yuxiang Xie, Qian Cai, Zu-Hang Sheng
Chronic mitochondrial dysfunction has been implicated in major neurodegenerative diseases. Long-term cumulative pathological stress leads to axonal accumulation of damaged mitochondria. Therefore, the early removal of defective mitochondria from axons constitutes a critical step of mitochondrial quality control. We recently investigated the axonal mitochondrial response to mild stress in wild-type neurons and chronic mitochondrial defects in amyotrophic lateral sclerosis (ALS)- and Alzheimer disease (AD)-linked neurons...
August 16, 2017: Autophagy
https://www.readbyqxmd.com/read/28812431/oral-administration-of-curcumin-attenuates-visceral-hyperalgesia-through-inhibiting-phosphorylation-of-trpv1-in-rat-model-of-ulcerative-colitis
#17
Mei Yang, Juan Wang, Chunxue Yang, Hongxiu Han, Weifang Rong, Guohua Zhang
Background Curcumin has been reported to have anti-inflammatory and anti-nociceptive effects. The present study was designed to explore the potential therapeutic effects of curcumin on visceral hyperalgesia and inflammation in a rat model of ulcerative colitis. We observed the effects of orally administered curcumin on the disease activity index, histological change in colon, colorectal distension-induced abdominal withdrawal reflex, the expression of transient receptor potential vanilloid 1 (TRPV1) and phosphorylated TRPV1 in dextran sulfate sodium-induced colitis rats...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28812418/neurotoxicity-of-cgmp-in-the-vertebrate-retina-from-the-initial-research-on-rd-mutant-mice-to-zebrafish-genetic-approaches
#18
Maria Iribarne, Ichiro Masai
Zebrafish are an excellent animal model for research on vertebrate development and human diseases. Sophisticated genetic tools including large-scale mutagenesis methodology make zebrafish useful for studying neuronal degenerative diseases. Here, we review zebrafish models of inherited ophthalmic diseases, focusing on cGMP metabolism in photoreceptors. cGMP is the second messenger of phototransduction, and abnormal cGMP levels are associated with photoreceptor death. cGMP concentration represents a balance between cGMP phosphodiesterase 6 (PDE6) and guanylate cyclase (GC) activities in photoreceptors...
August 16, 2017: Journal of Neurogenetics
https://www.readbyqxmd.com/read/28812416/role-of-branchiomotor-neurons-in-controlling-food-intake-of-zebrafish-larvae
#19
James R Allen, Kiran D Bhattacharyya, Emilia Asante, Badr Almadi, Kyle Schafer, Jeremy Davis, Jane Cox, Mark Voigt, John A Viator, Anand Chandrasekhar
The physical act of eating or feeding involves the coordinated action of several organs like eyes and jaws, and associated neural networks. Moreover, the activity of the neural networks controlling jaw movements (branchiomotor circuits) is regulated by the visual, olfactory, gustatory and hypothalamic systems, which are largely well characterized at the physiological level. By contrast, the behavioral output of the branchiomotor circuits and the functional consequences of disruption of these circuits by abnormal neural development are poorly understood...
August 16, 2017: Journal of Neurogenetics
https://www.readbyqxmd.com/read/28812267/oxytocin-and-parental-behaviors
#20
Chihiro Yoshihara, Michael Numan, Kumi O Kuroda
The oxytocin/vasopressin ancestor molecule has been regulating reproductive and social behaviors for more than 500 million years. In all mammals, oxytocin is the hormone indispensable for milk-ejection during nursing (maternal milk provision to offspring), a process that is crucial for successful mammalian parental care. In laboratory mice, a remarkable transcriptional activation occurs during parental behavior within the anterior commissural nucleus (AC), the largest magnocellular oxytocin cell population within the medial preoptic area (although the transcriptional activation was limited to non-oxytocinergic neurons in the AC)...
August 16, 2017: Current Topics in Behavioral Neurosciences
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