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Lithium neurons

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https://www.readbyqxmd.com/read/29102713/the-anticonvulsant-activity-and-cerebral-protection-of-chronic-lithium-chloride-via-nmda-receptor-nitric-oxide-and-phospho-erk
#1
Razieh Mohammad Jafari, Mohammad Hossein Ghahremani, Nastaran Rahimi, Amir Shadboorestan, Amir Rashidian, Jamileh Esmaeili, Shahram Ejtemaei Mehr, Ahmad Reza Dehpour
The underlying mechanisms for the neuroprotective effects of lithium chloride in neurodegenerative diseases such as seizures remain unknown. In present study the downstream signaling pathway of phospho-ERK/NMDA receptors/nitric oxide has been studied. For this purpose, acute and chronic effect of lithium in seizure animal model and the interaction of NMDA receptor antagonist (MK-801) and neuronal nitric oxide synthase (nNOS) inhibitor (7-NI) with these neuroprotection has been studied. Acute lithium administration showed pro-convulsive properties in pentylenetetrazole (PTZ)-induced seizure model while chronic treatment increased the seizure threshold significantly...
November 2, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/29090066/lithium-chloride-can-induce-differentiation-of-human-immortalized-renvm-cells-into-dopaminergic-neurons
#2
Mitra Soleimani, Nazem Ghasemi
BACKGROUND: Stem cell-based therapy is a novel strategy for the treatment of neurodegenerative diseases. The transplantation of fully differentiated cells instead of stem cells in order to decrease serious adverse complications of stem cell therapy is a new idea. In this study, the effect of lithium chloride on dopaminergic differentiation of human immortalized RenVm cells was investigated in order to access a population of fully differentiated cells for transplantation in Parkinson disease...
October 2017: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/29080472/the-expression-of-g-protein-coupled-receptor-kinase-5-and-its-interaction-with-dendritic-marker-microtubule-associated-protein-2-after-status-epilepticus
#3
Xiangchang Zeng, Siyu Chen, Qing Gao, Wenjing Zong, Dejian Jiang, Guirong Zeng, Luping Zhou, Lulu Chen, Wei Luo, Jian Xiao, Bo Xiao, Dongsheng Ouyang, Kai Hu
OBJECTIVE: Acute seizures induced dendritic formation and synaptogenesis promotes aberrant circuitry development and further aggravates underlying conditions towards chronic epilepsy. The G protein-coupled receptor kinase-5 (GRK5) served as a key modulator in neurogenesis and the establishment of functional neuronal circuitry. This included dendritic development, as its dysfunction could cause different central nervous system disorders, including Alzheimer's disease. However, the involvement of GRK5 in the progression of epilepsy remains unclear...
October 13, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29070854/altered-norbin-expression-in-patients-with-epilepsy-and-a-rat-model
#4
Yali Xu, Zengyou Li, Li Yao, Xingping Zhang, Dan Gan, Manchun Jiang, Na Wang, Guojun Chen, Xuefeng Wang
Norbin is widely distributed in neuronal tissues, is a regulator of Ca2(+)/calmodulin-dependent protein kinase II (CaMKII) phosphorylation. Norbin is also an important endogenous modulator of metabotropic glutamate receptor 5 (mGluR5) signaling, and nervous system-specific homozygous gene disruptions, result in epileptic seizures. In this study, we aimed to investigate norbin expression patterns in epilepsy and to elucidate the relationships between norbin and mGluR5 and p-CaMKII in epilepsy. Double-immunolabeling, immunohistochemistry and immunoblotting studies showed that norbin was downregulated in the temporal neocortex of patients with temporal lobe epilepsy (TLE) compared with control subjects...
October 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29067888/lithium-induced-gene-expression-alterations-in-two-peripheral-cell-models-of-bipolar-disorder
#5
Sarah Kittel-Schneider, Max Hilscher, Claus-Jürgen Scholz, Heike Weber, Lena Grünewald, Ricarda Schwarz, Andreas G Chiocchetti, Andreas Reif
OBJECTIVES: The aim of our study was to investigate molecular mechanisms of lithium action by studying the gene expression profile of peripheral cell models generated from bipolar patients (BD) and healthy controls (HC). METHODS: EBV-immortalized lymphoblastoid cells (LCLs) and fibroblast cells from BD and HC were incubated with either lithiumchloride or plain medium for 3 weeks. We first conducted a microarray gene expression study. The most promising differentially regulated genes in terms of lithium-associated or disorder-associated pathways were then replicated by quantitative Real Time PCR (qRT PCR)...
October 25, 2017: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/29057282/cerebralux-a-low-cost-open-source-wireless-probe-for-optogenetic-stimulation
#6
Robel Dagnew, Yin-Ying Lin, Jerikko Agatep, Michael Cheng, Andrew Jann, Viola Quach, Michelle Monroe, Ganeev Singh, Ani Minasyan, Joshua Hakimian, Theodore Kee, Jesse Cushman, Wendy Walwyn
The use of optogenetics to activate or inhibit neurons is an important toolbox for neuroscientists. Several optogenetic devices are in use. These range from wired systems where the optoprobe is physically connected to the light source by a tether, to wireless systems that are remotely controlled. There are advantages and disadvantages of both; the wired systems are lightweight but limit movement due to the tether, and wireless systems allow unrestricted movement but may be heavier than wired systems. Both systems can be expensive to install and use...
October 2017: Neurophotonics
https://www.readbyqxmd.com/read/29037191/ascorbic-acid-alters-cell-fate-commitment-of-human-neural-progenitors-in-a-wnt-%C3%AE-catenin-ros-signaling-dependent-manner
#7
Tareck Rharass, Margareta Lantow, Adam Gbankoto, Dieter G Weiss, Daniela Panáková, Stéphanie Lucas
BACKGROUND: Improving the neuronal yield from in vitro cultivated neural progenitor cells (NPCs) is an essential challenge in transplantation therapy in neurological disorders. In this regard, Ascorbic acid (AA) is widely used to expand neurogenesis from NPCs in cultures although the mechanisms of its action remain unclear. Neurogenesis from NPCs is regulated by the redox-sensitive WNT/β-catenin signaling pathway. We therefore aimed to investigate how AA interacts with this pathway and potentiates neurogenesis...
October 16, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28960313/ethanol-stimulates-the-in-vivo-axonal-movement-of-neuropeptide-dense-core-vesicles-in-drosophila-motor-neurons
#8
Gary J Iacobucci, Shermali Gunawardena
Proper neuronal function requires essential biological cargoes to be packaged within membranous vesicles and transported, intracellularly, through the extensive outgrowth of axonal and dendritic fibers. The precise spatiotemporal movement of these cargoes is vital for neuronal survival and, thus, is highly regulated. In this study we test how the axonal movement of a neuropeptide containing dense core vesicle (DCV) responds to alcohol stressors. We found that ethanol induces a strong anterograde bias in vesicle movement...
September 28, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28942448/antagomirs-targeting-microrna-134-increase-limk1-levels-after-experimental-seizures-in-vitro-and-in-vivo
#9
Jiahang Sun, Xiaoying Gao, Dawei Meng, Yang Xu, Xichun Wang, Xin Gu, Mian Guo, Xiaodong Shao, Hongwen Yan, Chuanlu Jiang, Yongri Zheng
BACKGROUND: MiR-134 is enriched in dendrites of hippocampal neurons and plays crucial roles in the progress of epilepsy. The present study aims to investigate the effects of antagomirs targeting miroRNA-134 (Ant-134) on limk1 expression and the binding of miR-134 and limk1 in experimental seizure. METHODS: Status epilepticus (SE) rat model was established by lithium chloride-pilocarpine injection and was treated with Ant-134 by intracerebroventricular injection...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28927861/primary-cilia-formation-is-diminished-in-schizophrenia-and-bipolar-disorder-a-possible-marker-for-these-psychiatric-diseases
#10
Jesús Muñoz-Estrada, Alejandra Lora-Castellanos, Isaura Meza, Salvador Alarcón Elizalde, Gloria Benítez-King
Primary cilium (PC) is a microtubule-rich organelle that protrudes from the plasma membrane and acts as a cellular antenna sensing extracellular signals during brain development. DISC1 (Disrupted-in-Schizophrenia-1) is involved in PC formation and is considered a risk factor for neuropsychiatric disorders. We have previously described altered subcellular distribution of DISC1 and an aberrant microtubule organization in olfactory neuronal precursors (ONP) obtained from schizophrenia (SCZ) and bipolar disorder (BD) patients...
September 16, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28912687/alterations-in-properties-of-glutamatergic-transmission-in-the-temporal-cortex-and-hippocampus-following-pilocarpine-induced-acute-seizures-in-wistar-rats
#11
Dmitry V Amakhin, Sergey L Malkin, Julia L Ergina, Kirill A Kryukov, Ekaterina A Veniaminova, Olga E Zubareva, Aleksey V Zaitsev
Temporal lobe epilepsy (TLE) is the most common type of focal epilepsy in humans, and is often developed after an initial precipitating brain injury. This form of epilepsy is frequently resistant to pharmacological treatment; therefore, the prevention of TLE is the prospective approach to TLE therapy. The lithium-pilocarpine model in rats replicates some of the main features of TLE in human, including the pathogenic mechanisms of cell damage and epileptogenesis after a primary brain injury. In the present study, we investigated changes in the properties of glutamatergic transmission during the first 3 days after pilocarpine-induced acute seizures in Wistar rats (PILO-rats)...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28895268/lithium-reduces-the-span-of-g-protein-activated-k-girk-channel-inhibition-in-hippocampal-neurons
#12
Nathan Dascal, Moran Rubinstein
OBJECTIVES: Lithium (Li(+) ) is one of the most widely used treatments for bipolar disorder (BD). However, the molecular and neuronal basis of BD, as well as the mechanisms of Li(+) actions are poorly understood. Cellular and biochemical studies identified G proteins as being among the cellular targets for Li(+) action, while genetic studies indicated an association with the KCNJ3 gene, which encodes the G protein-activated inwardly rectifying K(+) (GIRK) channels. GIRK channels regulate neuronal excitability by mediating the inhibitory effects of multiple neurotransmitters and contribute to the resting potassium conductance...
September 12, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28894008/genetic-disruption-of-ankyrin-g-in-adult-mouse-forebrain-causes-cortical-synapse-alteration-and-behavior-reminiscent-of-bipolar-disorder
#13
Shanshan Zhu, Zachary A Cordner, Jiali Xiong, Chi-Tso Chiu, Arabiye Artola, Yanning Zuo, Andrew D Nelson, Tae-Yeon Kim, Natalya Zaika, Brian M Woolums, Evan J Hess, Xiaofang Wang, De-Maw Chuang, Mikhail M Pletnikov, Paul M Jenkins, Kellie L Tamashiro, Christopher A Ross
Genome-wide association studies have implicated the ANK3 locus in bipolar disorder, a major human psychotic illness. ANK3 encodes ankyrin-G, which organizes the neuronal axon initial segment (AIS). We generated a mouse model with conditional disruption of ANK3 in pyramidal neurons of the adult forebrain (Ank-G cKO). This resulted in the expected loss of pyramidal neuron AIS voltage-gated sodium and potassium channels. There was also dramatic loss of markers of afferent GABAergic cartridge synapses, resembling the cortical microcircuitry changes in brains from psychotic patients, and suggesting disinhibition...
September 26, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28863321/the-role-of-necroptosis-in-status-epilepticus-induced-brain-injury-in-juvenile-rats
#14
Qianyun Cai, Jing Gan, Rong Luo, Yi Qu, Shiping Li, Chaomin Wan, Dezhi Mu
PURPOSE: To study the role of necroptosis in status epilepticus (SE)-induced injury in the developing brain and the possible associations of necroptosis with epileptogenesis and cognitive dysfunction. METHODS: The lithium-pilocarpine epilepsy model was reproduced in male rats at postnatal day 25. Propidium iodide (PI) staining was used to detect cell death after SE. Transmission electron microscopy (TEM) was performed to observe morphological changes in injured neurons...
October 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28852438/effect-of-eugenol-on-lithium-pilocarpine-model-of-epilepsy-behavioral-histological-and-molecular-changes
#15
Sara Joushi, Mahmoud Elahdadi Salmani
OBJECTIVES: Epilepsy establishment gives rise to biochemical and morphological changes in the hippocampus. Oxidative stress, morphological changes, and mossy fiber sprouting (MFS) in the hippocampus underpin the epilepsy establishment. Eugenol is the main component of the essential oil extracted from cloves with the potential to modulate neuronal excitability. Therefore, we investigated the effect of eugenol on convulsive behavior, oxidative stress, and histological changes of the hippocampus in lithium-pilocarpine model of epilepsy...
July 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28841161/disease-modifying-effects-of-the-spider-toxin-parawixin2-in-the-experimental-epilepsy-model
#16
Lívea Dornela Godoy, José Luiz Liberato, Marcus Vinícius Batista Celani, Leonardo Gobbo-Neto, Norberto Peporine Lopes, Wagner Ferreira Dos Santos
(1) Background: Temporal lobe epilepsy (TLE) is the most common type of epilepsy in adults. It is also the one with the highest percentage of drug-resistance to the current available anti-epileptic drugs (AED). Additionaly, most antiepileptic drugs are only able to control seizures in epileptogenesis, but do not decrease the hippocampal neurodegenerative process. TLE patients have a reduced population of interneuronal cells, which express Parvalbumin (PV) proteins. This reduction is directly linked to seizure frequency and severity in the chronic period of epilepsy...
August 25, 2017: Toxins
https://www.readbyqxmd.com/read/28821663/agrp-neurons-can-increase-food-intake-during-conditions-of-appetite-suppression-and-inhibit-anorexigenic-parabrachial-neurons
#17
Rachel A Essner, Alison G Smith, Adam A Jamnik, Anna R Ryba, Zoe D Trutner, Matthew E Carter
To maintain energy homeostasis, orexigenic (appetite-inducing) and anorexigenic (appetite suppressing) brain systems functionally interact to regulate food intake. Within the hypothalamus, neurons that express agouti-related protein (AgRP) sense orexigenic factors and orchestrate an increase in food-seeking behavior. In contrast, calcitonin gene-related peptide (CGRP)-expressing neurons in the parabrachial nucleus (PBN) suppress feeding. PBN CGRP neurons become active in response to anorexigenic hormones released following a meal, including amylin, secreted by the pancreas, and cholecystokinin (CCK), secreted by the small intestine...
September 6, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28803243/lithium-sensitivity-of-store-operated-ca2-entry-and-survival-of-fibroblasts-isolated-from-chorea-acanthocytosis-patients
#18
Lisann Pelzl, Bhaeldin Elsir, Itishri Sahu, Rosi Bissinger, Yogesh Singh, Basma Sukkar, Sabina Honisch, Ludger Schoels, Mohamed Jemaà, Elisabeth Lang, Alexander Storch, Andreas Hermann, Christos Stournaras, Florian Lang
BACKGROUND: The widely expressed protein chorein fosters activation of the phosphoinositide 3 kinase (PI3K) pathway thus supporting cell survival. Loss of function mutations of the chorein encoding gene VPS13A (vacuolar protein sorting-associated protein 13A) causes chorea-acanthocytosis (ChAc), a neurodegenerative disorder paralleled by deformations of erythrocytes. In mice, genetic knockout of chorein leads to enhanced neuronal apoptosis. PI3K dependent signalling upregulates Orai1, a pore forming channel protein accomplishing store operated Ca2+ entry (SOCE)...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28763058/a-novel-preventive-therapy-for-paclitaxel-induced-cognitive-deficits-preclinical-evidence-from-c57bl-6-mice
#19
P Huehnchen, W Boehmerle, A Springer, D Freyer, M Endres
Chemotherapy-induced central nervous system (CNS) neurotoxicity presents an unmet medical need. Patients often report a cognitive decline in temporal correlation to chemotherapy, particularly for hippocampus-dependent verbal and visuo-spatial abilities. We treated adult C57Bl/6 mice with 12 × 20 mg kg(-1) paclitaxel (PTX), mimicking clinical conditions of dose-dense chemotherapy, followed by a pulse of bromodesoxyuridine (BrdU) to label dividing cells. In this model, mice developed visuo-spatial memory impairments, and we measured peak PTX concentrations in the hippocampus of 230 nm l(-1), which was sevenfold higher compared with the neocortex...
August 1, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28758946/hippocampal-proteome-of-rats-subjected-to-the-li-pilocarpine-epilepsy-model-and-the-effect-of-carisbamate-treatment
#20
José Eduardo Marques-Carneiro, Daniele Suzete Persike, Julia Julie Litzahn, Jean-Christophe Cassel, Astrid Nehlig, Maria José da Silva Fernandes
In adult rats, the administration of lithium-pilocarpine (LiPilo) reproduces most clinical and neuropathological features of human temporal lobe epilepsy (TLE). Carisbamate (CRS) possesses the property of modifying epileptogenesis in this model. Indeed, about 50% of rats subjected to LiPilo status epilepticus (SE) develop non-convulsive seizures (NCS) instead of motor seizures when treated with CRS. However, the mechanisms underlying these effects remain unknown. The aim of this study was to perform a proteomic analysis in the hippocampus of rats receiving LiPilo and developing motor seizures or NCS following CRS treatment...
July 30, 2017: Pharmaceuticals
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