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BMC Neuroscience

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https://read.qxmd.com/read/30760214/time-dependent-degeneration-of-the-nigrostriatal-tract-in-mice-with-6-ohda-lesioned-medial-forebrain-bundle-and-the-effect-of-activin-a-on-l-dopa-induced-dyskinesia
#1
Peggy Rentsch, Sandy Stayte, Gary P Morris, Bryce Vissel
BACKGROUND: Accurately assessing promising therapeutic interventions for human diseases depends, in part, on the reproducibility of preclinical disease models. With the development of transgenic mice, the rapid adaptation of a 6-OHDA mouse model of Parkinson's disease that was originally described for the use in rats has come with a lack of a comprehensive characterization of lesion progression. In this study we therefore first characterised the time course of neurodegeneration in the substantia nigra pars compacta and striatum over a 4 week period following 6-OHDA injection into the medial forebrain bundle of mice...
February 13, 2019: BMC Neuroscience
https://read.qxmd.com/read/30654755/correction-to-computing-reward-prediction-errors-and-learning-valence-in-the-insect-mushroom-body
#2
James Bennett, Thomas Nowotny
Following the publication of the original article [1], it was highlighted that an old version of the text for abstract P252 was published, thereby causing the text to no longer correspond with Fig. 1.
January 17, 2019: BMC Neuroscience
https://read.qxmd.com/read/30611209/inhibitory-effect-of-ultrasonic-stimulation-on-the-voltage-dependent-potassium-currents-in-rat-hippocampal-ca1-neurons
#3
Kun Cui, Shuai Zhang, Jinyao Sun, Xueying Zhang, Chong Ding, Guizhi Xu
BACKGROUND: Transcranial ultrasonic stimulation is a novel noninvasive tool for neuromodulation, and has high spatial resolution and deep penetration. Although it can increase excitation of neurons, its effects on neuron are poorly understood. This study was to evaluate effect of ultrasonic stimulation (US) on neurons in vitro. In this paper, the effect of US on the excitability and voltage-dependent [Formula: see text] currents of CA1 pyramidal neurons in the rat hippocampus was studied using patch clamp...
January 5, 2019: BMC Neuroscience
https://read.qxmd.com/read/30602386/possible-involvement-of-peripheral-trp-channels-in-the-hydrogen-sulfide-induced-hyperalgesia-in-diabetic-rats
#4
José Eduardo Roa-Coria, Jorge Baruch Pineda-Farias, Paulino Barragán-Iglesias, Geovanna Nallely Quiñonez-Bastidas, Ángel Zúñiga-Romero, Juan Carlos Huerta-Cruz, Juan Gerardo Reyes-García, Francisco Javier Flores-Murrieta, Vinicio Granados-Soto, Héctor Isaac Rocha-González
BACKGROUND: Peripheral diabetic neuropathy can be painful and its symptoms include hyperalgesia, allodynia and spontaneous pain. Hydrogen sulfide (H2 S) is involved in diabetes-induced hyperalgesia and allodynia. However, the molecular target through which H2 S induces hyperalgesia in diabetic animals is unclear. The aim of this study was to determine the possible involvement of transient receptor potential (TRP) channels in H2 S-induced hyperalgesia in diabetic rats. RESULTS: Streptozotocin (STZ) injection produced hyperglycemia in rats...
January 3, 2019: BMC Neuroscience
https://read.qxmd.com/read/30602377/the-modulation-effect-of-non-invasive-brain-stimulation-on-cognitive-function-in-patients-with-mild-cognitive-impairment-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#5
Ying Xu, Zhijie Qiu, Jingfang Zhu, Jiao Liu, Jingsong Wu, Jing Tao, Lidian Chen
BACKGROUND: To prevent and control dementia, many scholars have focused on the transition stage between normal ageing and dementia, mild cognitive impairment (MCI) which is a key interventional target for dementia. Studies have shown that non-invasive brain stimulation (NIBS) is beneficial to improve cognitive function of MCI patients. However, whether NIBS is conducive to the protection of cognitive ability in MCI patients remains unknown due to limited evidence. The aim of the study was to systematically evaluate the modulation effect of NIBS on cognitive function (global cognitive ability and specific domains of cognition) in patients with MCI...
January 3, 2019: BMC Neuroscience
https://read.qxmd.com/read/30594149/rapamycin-treatment-increases-hippocampal-cell-viability-in-an-mtor-independent-manner-during-exposure-to-hypoxia-mimetic-cobalt-chloride
#6
Mary A Zimmerman, Christan D Biggers, P Andy Li
BACKGROUND: Cobalt chloride (CoCl2 ) induces chemical hypoxia through activation of hypoxia-inducible factor-1 alpha (HIF-1α). Mammalian target of rapamycin (mTOR) is a multifaceted protein capable of regulating cell growth, angiogenesis, metabolism, proliferation, and survival. In this study, we tested the efficacy of a well-known mTOR inhibitor, rapamycin, in reducing oxidative damage and increasing cell viability in the mouse hippocampal cell line, HT22, during a CoCl2 -simulated hypoxic insult...
December 29, 2018: BMC Neuroscience
https://read.qxmd.com/read/30591020/thrombin-contributes-to-the-injury-development-and-neurological-deficit-after-acute-subdural-hemorrhage-in-rats-only-in-collaboration-with-additional-blood-derived-factors
#7
Tobias J Krämer, Wasim Sakas, Daniel Jussen, Harald Krenzlin, Oliver Kempski, Beat Alessandri
BACKGROUND: Acute subdural hemorrhage (ASDH) is a severe consequence of traumatic brain injury. The occurrence of subdural blood increases the lethality of these patients independent of the amount of blood or elevated intracranial pressure. Thrombin is one of the potential harmful blood components. Possible harmful effects of thrombin are mediated via the Protease-activated-receptor-1 (PAR1) and thus, translating the acute Thrombin release after ASDH into cell loss. The objectives of the present study were twofold, namely to examine (1) the impact of direct thrombin inhibition in the acute phase after hemorrhage on the long-term histological and functional deficits and (2) the early inhibition of PAR1 activation by thrombin with the selective antagonist SCH79797 on lesion volume at 14 days after ASDH...
December 27, 2018: BMC Neuroscience
https://read.qxmd.com/read/30558545/offline-encoding-impaired-by-epigenetic-regulations-of-monoamines-in-the-guided-propagation-model-of-autism
#8
Dominique G Béroule
BACKGROUND: Environmental factors can modify the expression of genes, including those involved in the metabolism of neurotransmitters. Accounting for a control role of monoamine neurotransmitters, the guided propagation (GP) memory model may contribute to investigate the consequences of neuromodulation impairments on development disorders such as autism. A prenatal transient excess of 'monoamine oxidase A' enzyme is assumed here to trigger persistent epigenetic regulations that would induce imbalanced metabolisms of synaptic monoamines...
December 17, 2018: BMC Neuroscience
https://read.qxmd.com/read/30537945/altered-slc25-family-gene-expression-as-markers-of-mitochondrial-dysfunction-in-brain-regions-under-experimental-mixed-anxiety-depression-like-disorder
#9
Vladimir N Babenko, Dmitry A Smagin, Anna G Galyamina, Irina L Kovalenko, Natalia N Kudryavtseva
BACKGROUND: Development of anxiety- and depression-like states under chronic social defeat stress in mice has been shown by many experimental studies. In this article, the differentially expressed Slc25* family genes encoding mitochondrial carrier proteins were analyzed in the brain of depressive (defeated) mice versus aggressive mice winning in everyday social confrontations. The collected samples of brain regions were sequenced at JSC Genoanalytica ( http://genoanalytica.ru/ , Moscow, Russia)...
December 11, 2018: BMC Neuroscience
https://read.qxmd.com/read/30509160/the-effect-of-anesthetic-dose-on-the-motor-response-induced-by-low-intensity-pulsed-ultrasound-stimulation
#10
Yi Yuan, Xingran Wang, Jiaqing Yan, Xiaoli Li
BACKGROUND: Low-intensity pulsed ultrasound stimulation (LIPUS) has been proven to be a noninvasive method with high spatial resolution and deep penetration. Previous studies have qualitatively demonstrated that the electromyographic response caused by LIPUS in the mouse motor cortex is affected by the anesthetic state of the mice. However, the quantitative relationship between motor response and anesthetic dose remains unclear. RESULTS: Experimental results show that the success rate decreases stepwise as the isoflurane concentration/mouse weight ratio increases (ratios: [0...
December 3, 2018: BMC Neuroscience
https://read.qxmd.com/read/30497386/pkc%C3%AE%C2%B5-phosphorylation-regulates-the-mitochondrial-translocation-of-atf2-in-ischemia-induced-neurodegeneration
#11
Varun Kumar, Yi-Chinn Weng, Yu-Chieh Wu, Yu-Ting Huang, Wen-Hai Chou
BACKGROUND: Global cerebral ischemia triggers neurodegeneration in the hippocampal CA1 region, but the mechanism of neuronal death remains elusive. The epsilon isoform of protein kinase C (PKCε) has recently been identified as a master switch that controls the nucleocytoplasmic trafficking of ATF2 and the survival of melanoma cells. It is of interest to assess the role of PKCε-ATF2 signaling in neurodegeneration. RESULTS: Phosphorylation of ATF2 at Thr-52 was reduced in the hippocampus of PKCε null mice, suggesting that ATF2 is a phosphorylation substrate of PKCε...
November 29, 2018: BMC Neuroscience
https://read.qxmd.com/read/30497382/dyskinesia-and-brain-derived-neurotrophic-factor-levels-after-long-term-levodopa-and-nicotinic-receptor-agonist-treatments-in-female-mice-with-near-total-unilateral-dopaminergic-denervation
#12
Sakari Leino, Samuel Kohtala, Tomi Rantamäki, Sini K Koski, Saara Rannanpää, Outi Salminen
BACKGROUND: The treatment of Parkinson's disease is often complicated by levodopa-induced dyskinesia (LID). Nicotinic acetylcholine receptor agonists can alleviate LID in animal models but may be less effective in conditions of severe dopaminergic denervation. While the mechanisms of LID remain incompletely understood, elevated corticostriatal levels of the brain-derived neurotrophic factor (BDNF) have been suggested to play a role. Here, female mice with near-total unilateral 6-hydroxydopamine-induced nigrostriatal lesions were chronically treated with levodopa, and the effects of the α7 nicotinic receptor partial agonist AZD0328 and nicotine on LID were assessed...
November 29, 2018: BMC Neuroscience
https://read.qxmd.com/read/30458729/metabolite-differences-between-glutamate-carboxypeptidase-ii-gene-knockout-mice-and-their-wild-type-littermates-after-traumatic-brain-injury-a-7-tesla-1-h-mrs-study
#13
Wenbo Wu, Siyi Xu, Jialin Wang, Kuiming Zhang, Mingkun Zhang, Yang Cao, Hongqing Ren, Deyou Zheng, Chunlong Zhong
BACKGROUND: Traumatic brain injury (TBI) is a complex condition and remains a prominent public and medical health issue in individuals of all ages. A rapid increase in extracellular glutamate occurs after TBI, leading to glutamate-induced excitotoxicity, which causes neuronal damage and further functional impairments. Although inhibition of glutamate carboxypeptidase II (GCP II) is considered a potential approach for reducing glutamate-induced excitotoxicity after TBI, further detailed evidence regarding its efficacy is required...
November 20, 2018: BMC Neuroscience
https://read.qxmd.com/read/30424732/biaryl-scaffold-focused-virtual-screening-for-anti-aggregatory-and-neuroprotective-effects-in-alzheimer-s-disease
#14
Sidra Khalid, Muhammad Ammar Zahid, Hussain Ali, Yeong S Kim, Salman Khan
BACKGROUND: Alzheimer's disease (AD) is a primary cause of dementia in ageing population affecting more than 35 million people around the globe. It is a chronic neurodegenerative disease caused by defected folding and aggregation of amyloid beta (Aβ) protein. Aβ is formed by the cleavage of membrane embedded amyloid precursor protein (APP) by using enzyme 'transmembrane aspartyl protease, β-secretase'. Inhibition of β-secretase is a viable strategy to prevent neurotoxicity in AD. Another strategy in the treatment of AD is inhibition of acetylcholinesterase...
November 13, 2018: BMC Neuroscience
https://read.qxmd.com/read/30419814/abstracts-of-the-6th-meeting-of-the-neapolitan-brain-group
#15
(no author information available yet)
No abstract text is available yet for this article.
November 13, 2018: BMC Neuroscience
https://read.qxmd.com/read/30419823/downregulation-of-calcium-dependent-nmda-receptor-desensitization-by-sodium-calcium-exchangers-a-role-of-membrane-cholesterol
#16
Dmitry A Sibarov, Ekaterina E Poguzhelskaya, Sergei M Antonov
BACKGROUND: The plasma membrane Na+ /Ca2+ -exchanger (NCX) has recently been shown to regulate Ca2+ -dependent N-methyl-D-aspartate receptor (NMDAR) desensitization, suggesting a tight interaction of NCXs and NMDARs in lipid nanoclasters or "rafts". To evaluate possible role of this interaction we studied effects of Li+ on NMDA-elicited whole-cell currents and Ca2+ responses of rat cortical neurons in vitro before and after cholesterol extraction by methyl-β-cyclodextrin (MβCD)...
November 12, 2018: BMC Neuroscience
https://read.qxmd.com/read/30413185/riboflavin-and-pyridoxine-restore-dopamine-levels-and-reduce-oxidative-stress-in-brain-of-rats
#17
Armando Valenzuela Peraza, David Calderón Guzmán, Norma Osnaya Brizuela, Maribel Ortiz Herrera, Hugo Juárez Olguín, Miroslava Lindoro Silva, Belén Juárez Tapia, Gerardo Barragán Mejía
BACKGROUND: Neurological disorders suggest that the excitotoxicity involves a drastic increase in intracellular Ca2+ concentrations and the formation of reactive oxygen species. The presence of these free radicals may also affect the dopaminergic system. The aim of this work was to determine if riboflavin (B2 ) and pyridoxine (B6 ) provide protection to the brain against free radicals generated by 3-nitropropionic acid (3-NPA) by measuring the levels of dopamine (DA) and selected oxidative stress markers...
November 9, 2018: BMC Neuroscience
https://read.qxmd.com/read/30413143/glycine-receptors-expression-in-rat-spinal-cord-and-dorsal-root-ganglion-in-prostaglandin-e2-intrathecal-injection-models
#18
Hung-Chen Wang, Kuang-I Cheng, Pei-Ru Chen, Kuang-Yi Tseng, Aij-Lie Kwan, Lin-Li Chang
BACKGROUND: Glycine receptors (GlyRs) are involved in the development of spinal pain sensitization. The GlyRα3 subunit has recently emerged as a key factor in inflammatory pain pathways in the spinal cord dorsal horn (DH). Our study is to identify the extent of location and cell types expressing different GlyR subunits in spinal cord and dorsal root ganglion (DRGs). To tease out the possible actions of GlyRs on pain transmission, we investigate the effects produced by GlyRs on acute inflammatory pain by behavioral testing using prostaglandin E2 (PGE2) intrathecal injection models...
November 9, 2018: BMC Neuroscience
https://read.qxmd.com/read/30400853/identification-of-the-neurotransmitter-profile-of-amfoxp-expressing-neurons-in-the-honeybee-brain-using-double-label-in-situ-hybridization
#19
Adriana Schatton, Julia Agoro, Janis Mardink, Gérard Leboulle, Constance Scharff
BACKGROUND: FoxP transcription factors play crucial roles for the development and function of vertebrate brains. In humans the neurally expressed FOXPs, FOXP1, FOXP2, and FOXP4 are implicated in cognition, including language. Neural FoxP expression is specific to particular brain regions but FoxP1, FoxP2 and FoxP4 are not limited to a particular neuron or neurotransmitter type. Motor- or sensory activity can regulate FoxP2 expression, e.g. in the striatal nucleus Area X of songbirds and in the auditory thalamus of mice...
November 6, 2018: BMC Neuroscience
https://read.qxmd.com/read/30400847/pa28%C3%AE-%C3%AE-overexpression-enhances-learning-and-memory-of-female-mice-without-inducing-20s-proteasome-activity
#20
Julia Adelöf, My Andersson, Michelle Porritt, Anne Petersen, Madeleine Zetterberg, John Wiseman, Malin Hernebring
BACKGROUND: The proteasome system plays an important role in synaptic plasticity. Induction and maintenance of long term potentiation is directly dependent on selective targeting of proteins for proteasomal degradation. The 20S proteasome activator PA28αβ activates hydrolysis of small nonubiquitinated peptides and possesses protective functions upon oxidative stress and proteinopathy. The effect of PA28αβ activity on behavior and memory function is, however, not known. We generated a mouse model that overexpresses PA28α (PA28αOE) to understand PA28αβ function during healthy adult homeostasis via assessment of physiological and behavioral profiles, focusing on female mice...
November 6, 2018: BMC Neuroscience
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