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Neuroscience Letters

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https://www.readbyqxmd.com/read/27914952/independent-tonotopy-and-thalamocortical-projection-patterns-in-two-adjacent-parts-of-the-classical-primary-auditory-cortex-in-mice
#1
Hiroaki Tsukano, Masao Horie, Kuniyuki Takahashi, Ryuichi Hishida, Hirohide Takebayashi, Katsuei Shibuki
Amid recent amendment of delineation of a mouse auditory cortical map, a caudal auditory field, originally defined as the primary auditory cortex (AI), was divided into the AI and dorsomedial field (DM), based on distinct high frequency areas. A low frequency area was not previously established in the DM because responses to low frequency tones were weak in this area. This may lead to the misconception that the DM is an atypical region that lacks a low frequency band. In the current study, we confirmed that the DM has a low frequency area that is completely independent from the AI...
November 30, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27913194/genetic-screening-of-thap1-in-primary-dystonia-patients-of-india
#2
Subhajit Giri, Tufan Naiya, Zaffar Equbal, Charulata Savant Sankhla, Shyamal Kumar Das, Kunal Ray, Jharna Ray
BACKGROUND: Primary Dystonia is a common movement disorder manifested by dystonic symptoms only. DYT6, a major genetic factor, plays a significant role in primary pure dystonia pathogenesis. In this study we analyzed THAP1 (DYT 6) gene in primary pure dystonia patients, which has been widely studied in other populations but not in Indians. METHODS: The study cohort contained 227 index primary pure dystonia patients with the involvement of cervical region and 254 neurologically control individuals collected from East Indian population...
November 29, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27913193/neuropeptide-y-resilience-and-ptsd-therapeutics
#3
REVIEW
Marin Kautz, Dennis S Charney, James W Murrough
Resilience to traumatic stress is a complex psychobiological process that protects individuals from developing posttraumatic stress disorder (PTSD) or other untoward consequences of exposure to extreme stress, including depression. Progress in translational research points toward the neuropeptide Y (NPY) system - among others - as a key mediator of stress response and as a potential therapeutic focus for PTSD. Substantial preclinical evidence supports the role of NPY in the modulation of stress response and in the regulation of anxiety in animal models...
November 29, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27899308/insight-gained-from-genome-wide-interaction-and-enrichment-analysis-on-weight-gain-during-citalopram-treatment
#4
Henrik Thyge Corfitsen, Antonio Drago
Weight gain is a possible side effect of the pharmacological antidepressant treatments. Defining antidepressant prescriptions based on personal genetic makeups would decrease the risk of weight gain and increase the quality of the current antidepressant pharmacological treatments. 643 depressed, citalopram treated individuals with available clinical and genome-wide genetic information were investigated to identify the molecular pathways associated with weight gain. 111 individuals experienced weight gain during citalopram treatment...
November 27, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27899310/electrophysiological-evidence-for-attentional-capture-by-irrelevant-angry-facial-expressions-naturalistic-faces
#5
Nicolas Burra, Sélim Yahia Coll, Caroline Barras, Dirk Kerzel
Recently, research on lateralized event related potentials (ERPs) in response to irrelevant distractors has revealed that angry but not happy schematic distractors capture spatial attention. Whether this effect occurs in the context of the natural expression of emotions is unknown. To fill this gap, observers were asked to judge the gender of a natural face surrounded by a singleton color among five other face identities. In contrast to previous studies, the similarity between the task-relevant feature (color) and the distractor features was low...
November 26, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27899309/repeated-misdiagnosis-of-a-relapsed-atypical-anti-nmda-receptor-encephalitis-without-an-associated-ovarian-teratoma
#6
Weihe Zhang, Li Yan, Jinsong Jiao
We present an atypical case of relapsed anti-NMDAR encephalitis in a young female patient without an associated ovarian teratoma. She presented with recurrent seizure attacks with muscle weakness, psychosis, dyskinesia, autonomic failure and insomnia. She was first misdiagnosed as mitochondrial encephalomyopathy with lactic acidosis and stroke-like episodes (MELAS) then Hashimoto's encephalopathy due to diffuse cerebral lesions, elevated serum lactic acid concentration, increased amount of thyroid peroxidase and thyroglobulin antibodies in serum and diffuse lesions of the thyroid gland...
November 26, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27894919/resveratrol-attenuates-mpp-induced-mitochondrial-dysfunction-and-cell-apoptosis-via-akt-gsk-3%C3%AE-pathway-in-sn4741-cells
#7
Weijun Zeng, Wei Zhang, Fangfang Lu, Li Gao, Guodong Gao
Oxidative stress and mitochondrial dysfunction play crucial role in the dopaminergic neurons death, which is the pathological feature of Parkinson's disease (PD). Resveratrol (Res), a polyphenol derived from grapes and blueberries, has been reported to reduce oxidative stress injury and to restore mitochondrial function. In this study, we aimed to explore the underlying molecular mechanism of the beneficial effects of Res against MPP+- induced mitochondrial dysfunction and cell apoptosis in SN4741 cells. The data showed that Res significantly alleviated MPP+- induce cytotoxicity and restored MPP+- induced mitochondrial dysfunction in SN4741 cells...
November 26, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27894921/alterations-of-awake-eeg-in-idiopathic-rem-sleep-behavior-disorder-without-cognitive-impairment
#8
Young Rong Bang, Hong Jun Jeon, Soyoung Youn, In-Young Yoon
The aim of this study was to find electroencephalographic (EEG) changes in subjects with drug-naïve idiopathic rapid eye movement sleep behavior disorder (iRBD) who had no cognitive impairment. A total of 57 iRBD patients confirmed by polysomnography (PSG) and 33 sex and age-matched healthy controls were included and their waking EEG was recorded from five cortical regions for 15minutes. Power spectral analyses by fast Fourier transforms were performed on EEG data. In PSG data, the iRBD patients showed sleep disturbances of short total sleep time, decreased sleep efficiency, increased sleep latency and frequent awakening compared to controls...
November 25, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27894920/effects-of-repeated-dizocilpine-treatment-on-glutamatergic-activity-in-the-prefrontal-cortex-in-an-animal-model-of-schizophrenia-an-in-vivo-proton-magnetic-resonance-spectroscopy-study-at-9-4t
#9
Chi-Hyeon Yoo, Kyu-Ho Song, Song-I Lim, Do-Wan Lee, Dong-Cheol Woo, Bo-Young Choe
Repeated exposure to dizocilpine (MK-801) can be used as a model of schizophrenia that incorporates disease progression. Proton magnetic resonance spectroscopy ((1)H MRS) has been widely used to investigate schizophrenia-related alterations in glutamate (Glu). The purpose of this study was to investigate metabolic alterations in the prefrontal cortex (PFC) in an animal model of schizophrenia by using in vivo (1)H MRS. Because of the spectral overlap of Glu and glutamine (Gln), high-field (1)H MRS with short echo time (TE) was used...
November 25, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27890744/gene-expression-of-pro-opiomelanocortin-and-melanocortin-receptors-is-regulated-in-the-hypothalamus-and-mesocorticolimbic-system-following-nicotine-administration
#10
Damla E Tapinc, Rabia Ilgin, Egemen Kaya, Oguz Gozen, Muzeyyen Ugur, Ersin O Koylu, Lutfiye Kanit, Aysegul Keser, Burcu Balkan
Pro-opiomelanocortin (POMC)-derived peptides and their receptors have been shown to play important roles in natural and drug-induced reward and reinforcement. Reward process may involve the regulation of POMC gene expression and the gene expression of POMC-derived peptide receptors. The present study investigated the alterations observed in the transcript levels of POMC, melanocortin 3 (MC3R), melanocortin 4 (MC4R) and mu-opioid receptors (MOR) in the hypothalamus and mesocorticolimbic system during nicotine exposure...
November 24, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27890743/considering-future-pharmacotherapy-for-ptsd
#11
REVIEW
Matthew J Friedman, Nancy C Bernardy
Posttraumatic stress disorder (PTSD) is a prevalent, disabling, and often chronic condition that may develop following exposure to a traumatic event. Despite the immense social and economic ramifications of PTSD, there has been relatively little recent development of new pharmacotherapies. The majority of pharmacological randomized clinical trials (RCTs) that has been conducted are now dated. Existing treatments for PTSD primarily have come out of research that tested medications developed for other disorders such as antidepressants, anti-hypertensives, antipsychotics, anticonvulsants, and anxiolytics...
November 24, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27890742/serum-uric-acid-and-impaired-cognitive-function-in-community-dwelling-elderly-in-beijing
#12
Shuangling Xiu, Zheng Zheng, Shaochen Guan, Jin Zhang, Jinghong Ma, Piu Chan
The relationship between serum uric acid (sUA) and cognitive function is contradictory. This study assessed the association between sUA and cognitive impairment in 10,039 community-dwelling subjects aged ≥55years living in Beijing, China. Participants underwent determination of sUA and an evaluation of cognitive function using the scholarship-adjusted Mini-Mental State Examination (MMSE): MMSE ≤17 for illiterates; MMSE≤20 for primary school graduates (≥6years of education); and MMSE≤24 for junior school graduates or above (≥9years of education)...
November 24, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27890741/perisylvian-gaba-levels-in-schizophrenia-and-bipolar-disorder
#13
Murat İlhan Atagün, Elif Muazzez Şıkoğlu, Çağlar Soykan, Can Serdar Süleyman, Semra Ulusoy-Kaymak, Ali Çayköylü, Oktay Algın, Mary Louise Phillips, Dost Öngür, Constance Mary Moore
The aim of this study is to measure GABA levels of perisylvian cortices in schizophrenia and bipolar disorder patients, using proton magnetic resonance spectroscopy ((1)H-MRS). Patients with schizophrenia (n=25), bipolar I disorder (BD-I; n=28) and bipolar II disorder (BD-II; n=20) were compared with healthy controls (n=30). (1)H-MRS data was acquired using a Siemens 3T whole body scanner to quantify right and left perisylvian structures' (including superior temporal lobes) GABA levels. Right perisylvian GABA values differed significantly between groups [χ(2)=9...
November 24, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27889435/role-of-hmgb1-translocation-to-neuronal-nucleus-in-rat-model-with-septic-brain-injury
#14
Yafei Li, Xihong Li, Yi Qu, Jichong Huang, Tingting Zhu, Fengyan Zhao, Shiping Li, Dezhi Mu
High-mobility Group Box-1 (HMGB1) is a central late proinflammatory cytokine that triggers the inflammatory response during sepsis. However, whether HMGB1 is involved in the pathogenesis of septic brain damage is unknown. In this study, we investigated the role of HMGB1 in regulating brain injury in a rat model of sepsis. Wistar rats were subjected to cecal ligation and puncture (CLP) to induce septic brain injury. Hematoxylin and eosin staining was used to detect pathological changes in the cortex. The cellular localization of HMGB1 was determined using immunostaining...
November 23, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27888042/changes-in-neurotrophic-and-inflammatory-factors-in-the-cerebrospinal-fluid-of-patients-with-postherpetic-neuralgia
#15
Wenxing Zhao, Yong Wang, Qiwu Fang, Jianping Wu, Xinyou Gao, Hui Liu, Liu Cao, Jianxiong An
Inflammatory and neurotrophic factors are involved in postherpetic neuralgia (PHN), but the association of these factors in the cerebrospinal fluid (CSF) with the level of pain is poorly known. The present study aimed to examine the changes in neurotrophic and inflammatory factors in the CSF of patients with PHN and to study the correlation between these factors and the degree of pain. Fifty patients with PHN and 28 patients with hemifacial spasm (as controls) were recruited between May 2015 and March 2016...
November 23, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27888044/motor-memory-consolidation-processes-in-young-female-adults-with-adhd-may-be-less-susceptible-to-interference
#16
Orly Fox, Esther Adi-Japha, Avi Karni
Young adults with Attention Deficit Hyperactivity Disorder (ADHD) may have an atypical procedural ("how to") memory consolidation phase, after practicing a movement sequence, with smaller gains in speed and some costs in accuracy, compared to typical peers, at 24h post-training. Here we tested the susceptibility of performance gains retained after motor practice by young female adults with (N=16) and without (N=16) ADHD to post-training interference. Participants were trained on the finger-to-thumb opposition sequence learning task with performance speed and accuracy recorded before training, immediately after, and at 24h post-training...
November 22, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27888043/infusion-of-fluoxetine-a-serotonin-reuptake-inhibitor-in-the-shell-region-of-the-nucleus-accumbens-increases-blood-glucose-concentrations-in-rats
#17
C Diepenbroek, M Rijnsburger, L Eggels, K M van Megen, M T Ackermans, E Fliers, A Kalsbeek, M J Serlie, S E la Fleur
The brain is well known to regulate blood glucose, and the hypothalamus and hindbrain, in particular, have been studied extensively to understand the underlying mechanisms. Nuclei in these regions respond to alterations in blood glucose concentrations and can alter glucose liver output or glucose tissue uptake to maintain blood glucose concentrations within strict boundaries. Interestingly, several cortico-limbic regions also respond to alterations in glucose concentrations and have been shown to project to hypothalamic nuclei and glucoregulatory organs...
November 22, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27888041/understanding-the-contributions-of-visual-stimuli-to-contextual-fear-conditioning-a-proof-of-concept-study-using-lcd-screens
#18
Nathen J Murawski, Arun Asok
The precise contribution of visual information to contextual fear learning and discrimination has remained elusive. To better understand this contribution, we coupled the context pre-exposure facilitation effect (CPFE) fear conditioning paradigm with presentations of distinct visual scenes displayed on 4 LCD screens surrounding a conditioning chamber. Adult male Long-Evans rats received non-reinforced context pre-exposure on Day 1, an immediate 1.5mA foot shock on Day 2, and a non-reinforced context test on Day 3...
November 22, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27884739/structural-and-functional-improvements-due-to-robot-assisted-gait-training-in-the-stroke-injured-brain
#19
Hea Eun Yang, Sunghyon Kyeong, Seung Hwa Lee, Won-Jae Lee, Sang Won Ha, Seung Min Kim, Hyunkoo Kang, Won Min Lee, Chang Soon Kang, Dae Hyun Kim
Robot-assisted gait training (RAGT) can improve walking ability after stroke. Because the underlying mechanisms are still unknown, we analyzed changes in post-stroke injured brains after RAGT. Ten non-ambulatory patients receiving inpatient rehabilitation were examined within 3 months of stroke onset. RAGT consisted of 45minutes of training, 3days per week. We acquired diffusion tensor imaging (DTI) data before and after 20 sessions of RAGT. Fractional anisotropy (FA) maps were then used to determine neural changes after RAGT...
November 21, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27884738/development-of-the-human-oculomotor-nuclear-complex-centrally-projecting-edinger-westphal-nucleus
#20
Katsuyuki Yamaguchi
BACKGROUND: The cytoarchitecturally defined Edinger-Westphal nucleus (EW) is now referred to by many investigators as the centrally-projecting EW (EWcp) in humans. Although the mature structure is well-characterized, there have been few reports describing the precise morphology of this nucleus during the second half of gestation. SUBJECTS/DESIGN: Eleven brains were examined from preterm infants, aged 20-39 postmenstrual weeks, who died of various causes. After fixation, the brains were embedded in celloidin and serial sections of 30-μm thickness were cut in the horizontal plane...
November 21, 2016: Neuroscience Letters
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