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European Journal of Neuroscience

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https://www.readbyqxmd.com/read/28715135/chronic-pharmacological-blockade-of-the-na-ca-2-exchanger-modulates-the-growth-and-development-of-the-purkinje-cell-dendritic-arbor-in-mouse-cerebellar-slice-cultures
#1
Pradeep Sherkhane, Josef P Kapfhammer
The Na(+) /Ca(2+) exchanger (NCX) is a bi-directional plasma membrane antiporter involved in Ca(2+) homeostasis in eukaryotes. NCX has three isoforms, NCX1-3, and all of them are expressed in the cerebellum. Immunostaining on cerebellar slice cultures indicates that NCX is widely expressed in the cerebellum, including expression in Purkinje cells. The pharmacological blockade of the forward mode of NCX (Ca(2+) efflux mode) by Bepridil moderately inhibited growth and development of Purkinje cell dendritic arbor in cerebellar slice cultures...
July 17, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28715131/transcriptome-analysis-suggests-a-role-for-the-differential-expression-of-cerebral-aquaporins-and-the-mapk-signalling-pathway-in-human-temporal-lobe-epilepsy
#2
Mootaz M Salman, Mariam A Sheilabi, Dev Bhattacharyya, Philip Kitchen, Alex C Conner, Roslyn M Bill, M Nicola Woodroofe, Matthew T Conner, Alessandra P Princivalle
Epilepsies are common disorders of the central nervous system (CNS), affecting up to 2% of the global population. Pharmaco-resistance is a major clinical challenge affecting about 30% of temporal lobe epilepsy (TLE) patients. Water homeostasis has been shown crucial for regulation of neuronal excitability. The control of water movement is achieved through a family of small integral membrane channel proteins called aquaporins (AQPs). Despite the fact that changes in water homeostasis occur in sclerotic hippocampi of people with TLE, the expression of AQPs in the epileptic brain is not fully characterised...
July 17, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28715119/lateral-prefrontal-orbitofrontal-cortex-has-different-roles-in-norm-compliance-in-gain-and-loss-domains-a-transcranial-current-stimulation-tdcs-study
#3
Yunlu Yin, Hongbo Yu, Zhongbin Su, Yuan Zhang, Xiaolin Zhou
Sanction is used by almost all known human societies to enforce fairness norm in resource distribution. Previous studies have consistently shown that the lateral prefrontal cortex (lPFC) and the adjacent orbitofrontal cortex (lOFC) play a causal role in mediating the effect of sanction threat on norm compliance. However, most of these studies were conducted in the gain domain in which resources are distributed among members. Little is known about the mechanisms underlying norm compliance in the loss domain in which individual sacrifices are needed...
July 17, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28715117/differential-activation-of-neuronal-and-glial-stat3-in-the-spinal-cord-of-the-sod1-g93a-mouse-model-of-amyotrophic-lateral-sclerosis
#4
Tomohiro Ohgomori, Ryo Yamasaki, Hideyuki Takeuchi, Kenji Kadomatsu, Jun-Ichi Kira, Shozo Jinno
Signal transducer and activator of transcription (STAT) proteins are activated by phosphorylation in the spinal cord of patients suffering from amyotrophic lateral sclerosis (ALS). The major scope of our study is a comprehensive histological characterization of the mechanisms underlying neuronal and glial STAT3 activation in the pathogenesis of ALS using SOD1(G93A) mice. We calculated the fold changes (FCs, ratios vs. appropriate controls) of the numerical densities of the following phosphorylated STAT3-positive (pSTAT3)(+) cells: choline acetyltransferase (ChAT)(+) α-motoneurons, ionized calcium-binding adapter molecule 1 (Iba1)(+) microglia, and S100β(+) astrocytes in SOD1(G93A) mice...
July 17, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28715094/drosophila-mutants-lacking-octopamine-exhibit-impairment-in-aversive-olfactory-associative-learning
#5
Konstantin G Iliadi, Natalia Iliadi, Gabrielle L Boulianne
Octopamine is a biogenic amine in invertebrates that is considered a functional homolog of vertebrate norepinephrine, acting as a neurotransmitter, neuromodulator and neurohormone. Octopamine regulates many physiological processes such as metabolism, reproduction and different types of behaviour including learning and memory. Previous studies in insects led to the notion that acquisition of an olfactory memory depends on the octopaminergic system during appetitive (reward-based) learning, but not in the case of aversive (punishment-based) learning...
July 17, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28715089/drosophila-mutants-lacking-octopamine-exhibit-impairment-in-aversive-olfactory-associative-learning-commentary-on-iliadi-et%C3%A2-al-2017
#6
Timothy J Mosca
No abstract text is available yet for this article.
July 17, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28708260/effect-of-optogenetic-manipulation-of-accumbal-medium-spiny-neurons-expressing-dopamine-d2-receptors-in-cocaine-induced-behavioral-sensitization
#7
Byeong Jun Kang, Shelly Sooyun Song, Lei Wen, Ki-Pyo Hong, George J Augustine, Ja-Hyun Baik
Repetitive exposure to addictive drugs causes synaptic modification in the mesocorticolimbic dopamine (DA) system. Dopamine D1 receptors (D1R) or D2 receptors (D2R) expressed in the medium spiny neurons (MSNs) of the nucleus accumbens (NAc) play critical roles in the control of addictive behaviors. Optogenetic activation of D2R-expressing MSNs (D2R-MSNs) in the NAc previously demonstrated that these neurons play a key role in withdrawal-induced plasticity. Here, we examined the effect of optogenetic inhibition of D2R-MSNs in the NAc on cocaine-induced behavioral sensitization...
July 14, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28700113/na-k-atpase-coupled-to-endothelin-receptor-type-b-stimulates-peripheral-nerve-regeneration-via-lactate-signaling
#8
Nguyen H Tu, Tayo Katano, Shinji Matsumura, Nobuo Funatsu, Vuong Minh Pham, Jun-Ichi Fujisawa, Seiji Ito
We have recently demonstrated that endothelin (ET) is functionally coupled to Nax , a Na(+) concentration-sensitive Na(+) channel for lactate release via ET receptor type B (ETB R) and is involved in peripheral nerve regeneration in a sciatic nerve transection-regeneration mouse model. Nax is known to interact directly with Na(+) /K(+) -ATPase, leading to lactate production in the brain. To investigate the role of Na(+) /K(+) -ATPase in peripheral nerve regeneration, in the present study we applied ouabain, a Na(+) /K(+) -ATPase inhibitor, to the cut site for 4 weeks with an osmotic pump...
July 12, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28700108/gpr88-in-a2a-receptor-expressing-neurons-modulates-locomotor-response-to-dopamine-agonists-but-not-sensorimotor-gating
#9
A C Meirsman, A de Kerchove d'Exaerde, B L Kieffer, A M Ouagazzal
The orphan receptor, GPR88, is emerging as a key player in the pathophysiology of several neuropsychiatric diseases, including psychotic disorders. Knockout (KO) mice lacking GPR88 throughout the brain exhibit many abnormalities relevant to schizophrenia including locomotor hyperactivity, behavioral hypersensitivity to dopaminergic psychostimulants and deficient sensorimotor gating. Here, we used conditional knockout (cKO) mice lacking GPR88 selectively in striatal medium spiny neurons expressing A2A receptor to determine neuronal circuits underlying these phenotypes...
July 12, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28700099/potential-avenues-for-exercise-to-activate-episodic-memory-related-pathways-a-narrative-review
#10
REVIEW
Paul D Loprinzi, Meghan K Edwards, Emily Frith
Memory function plays an important role in activities of daily living, and consequently, quality and quantity of life. In this narrative review we discuss the anatomical components of episodic memory, including the structure of the hippocampus and the routes of communication to and from this structure. We also highlight cellular traces of memory, such as the engram cell and pathway. To provide etiological insight, the biological mechanisms of episodic memory are discussed, including factors subserving memory encoding (e...
July 12, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28700096/peak-alpha-frequency-is-a-neural-marker-of-cognitive-function-across-the-autism-spectrum
#11
Abigail Dickinson, Charlotte DiStefano, Damla Senturk, Shafali Spurling Jeste
Cognitive function varies substantially and serves as a key predictor of outcome and response to intervention in autism spectrum disorder (ASD), yet we know little about the neurobiological mechanisms that underlie cognitive function in children with ASD. The dynamics of neuronal oscillations in the alpha range (6-12 Hz) are associated with cognition in typical development. Peak alpha frequency is also highly sensitive to developmental changes in neural networks which underlie cognitive function, and therefore it holds promise as a developmentally-sensitive neural marker of cognitive function in ASD...
July 12, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28699296/long-lasting-contribution-of-dopamine-in-the-nucleus-accumbens-core-but-not-dorsal-lateral-striatum-to-sign-tracking
#12
Kurt M Fraser, Patricia H Janak
The attribution of incentive salience to reward-paired cues is dependent on dopamine release in the nucleus accumbens core. These dopamine signals conform to traditional reward-prediction error signals and have been shown to diminish with time. Here we examined if the diminishing dopamine signal in the nucleus accumbens core has functional implications for the expression of sign-tracking, a Pavlovian conditioned response indicative of the attribution of incentive salience to reward-paired cues. Food-restricted male Sprague-Dawley rats were trained in a Pavlovian paradigm in which an insertable lever predicted delivery of food reward in a nearby food cup...
July 12, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28699247/advance-mr-imaging-in-sports-related-concussion-and-mild-traumatic-brain-injury-ready-for-clinical-use
#13
Sven Haller
No abstract text is available yet for this article.
July 12, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28699218/impaired-corticomuscular-coherence-during-isometric-elbow-flexion-contractions-in-human-with-cervical-spinal-cord-injury
#14
Sylvain Cremoux, Jessica Tallet, Fabien Dal Maso, Eric Berton, David Amarantini
After spinal cord injury (SCI), the reorganization of the neuromuscular system leads to increased antagonist muscles' co-activation - i.e., increased antagonist vs. agonist muscles activation ratio - during voluntary contractions. Increased muscle co-activation is supposed to result from reduced cortical influences on spinal mechanisms inhibiting antagonist muscles. The assessment of the residual interactions between cortical and muscles activity with corticomuscular coherence (CMC) in participants with SCI producing different force levels may shed new lights on the regulation of muscle co-activation...
July 12, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28699187/does-transcranial-electrical-stimulation-enhance-corticospinal-excitability-of-the-motor-cortex-in-healthy-individuals-a-systematic-review-and-meta-analysis
#15
Thusharika Dissanayaka, Maryam Zoghi, Michael Farrell, Gary F Egan, Shapour Jaberzadeh
Numerous studies have explored the effects of transcranial electrical stimulation (tES) - including anodal transcranial direct current stimulation (a-tDCS), cathodal transcranial direct current stimulation (c-tDCS), transcranial alternative current stimulation (tACS), transcranial random noise stimulation (tRNS) and transcranial pulsed current stimulation (tPCS) - on corticospinal excitability (CSE) in healthy populations. However, the efficacy of these techniques and their optimal parameters for producing robust results have not been studied...
July 12, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28677242/striatal-cholinergic-interneurons-and-parkinson-s-disease
#16
Asami Tanimura, Tristano Pancani, Sean Austin O Lim, Cecilia Tubert, Alexandra E Melendez, Weixing Shen, D James Surmeier
Giant, aspiny cholinergic interneurons (ChIs) have long been known to be key nodes in the striatal circuitry controlling goal directed actions and habits. In recent years, new experimental approaches, like optogenetics and monosynaptic rabies virus mapping, have expanded our understanding of how ChIs contribute to the striatal activity underlying action selection and the interplay of dopaminergic and cholinergic signaling. These approaches also have begun to reveal how ChI function is distorted in disease states affecting the basal ganglia, like Parkinson's disease (PD)...
July 5, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28677227/the-atypical-dopamine-receptor-agonist-skf-83959-enhances-hippocampal-and-prefrontal-cortical-neuronal-network-activity-in-a-rat-model-of-cognitive-dysfunction
#17
Melissa L Perreault, Theresa Fan, Tomek J Banasikowski, Anthony A Grace, Susan R George
Deficits in neuronal network synchrony in hippocampus and prefrontal cortex have been widely demonstrated in disorders of cognitive dysfunction, including schizophrenia and Alzheimer's disease. The atypical dopamine agonist SKF 83959 has been shown to increase brain-derived neurotrophic factor signaling and suppress activity of glycogen synthase kinase-3 in PFC, two processes important to learning and memory. The purpose of this study was to therefore evaluate the impact of SKF 83959 on oscillatory deficits in methylazoxymethanol acetate (MAM) rat model of schizophrenia...
July 5, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28677202/dreadd-induced-silencing-of-the-medial-amygdala-reduces-the-preference-for-male-pheromones-and-the-expression-of-lordosis-in-estrous-female-mice
#18
Elizabeth A McCarthy, Arman Maqsudlu, Matthew Bass, Sofia Georghiou, James A Cherry, Michael J Baum
Sexually naïve estrous female mice seek out male urinary pheromones; however, they initially display little receptive (lordosis) behavior in response to male mounts. Vomeronasal - accessory olfactory bulb inputs to the medial amygdala (Me) regulate courtship in female rodents. We used a reversible inhibitory chemogenetic technique (Designer Receptors Exclusively Activated by Designer Drugs; DREADDs) to assess the contribution of Me signaling to females' preference for male pheromones and improvement in receptivity normally seen with repeated testing...
July 5, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28677201/everyday-memory-towards-a-translationally-effective-method-of-modeling-the-encoding-forgetting-and-enhancement-of-memory
#19
Mio Nonaka, Richard Fitzpatrick, Jennifer Lapira, Damian Wheeler, Patrick A Spooner, Marta Corcoles-Parada, Mónica Muñoz-López, Tim Tully, Marco Peters, Richard G M Morris
The testing of cognitive enhancers could benefit from the development of novel behavioural tasks that display better translational relevance for daily memory, and permit the examination of potential targets in a within-subjects manner with less variability. We here outline an optimized spatial 'everyday memory' task. We calibrate it systematically by interrogating certain well-established determinants of memory, and consider its potential for revealing novel features of encoding-related gene activation. Rats were trained in an event arena in which food was hidden in sandwells in a different location everyday...
July 5, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28664636/chemogenetic-inhibition-reveals-midline-thalamic-nuclei-and-thalamo-accumbens-projections-mediate-cocaine-seeking-in-rats
#20
Amanda M Wunsch, Lindsay M Yager, Elizabeth A Donckels, Calvin T Le, John F Neumaier, Susan M Ferguson
Drug addiction is a chronic disease that is shaped by alterations in neuronal function within the cortical-basal ganglia-thalamic circuit. However, our understanding of how this circuit regulates drug-seeking remains incomplete, and relapse rates remain high. The midline thalamic nuclei are an integral component of the cortical-basal ganglia-thalamic circuit and are poised to mediate addiction behaviors, including relapse. It is surprising that little research has examined the contribution of midline thalamic nuclei and their efferent projections in relapse...
June 30, 2017: European Journal of Neuroscience
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