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Lithium neurons

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https://www.readbyqxmd.com/read/29331582/inositol-polyphosphates-contribute-to-cellular-circadian-rhythms-implications-for-understanding-lithium-s-molecular-mechanism
#1
Heather Wei, Dominic Landgraf, George Wang, Michael J McCarthy
Most living organisms maintain cell autonomous circadian clocks that synchronize critical biological functions with daily environmental cycles. In mammals, the circadian clock is regulated by inputs from signaling pathways including glycogen synthase kinase 3 (GSK3). The drug lithium has actions on GSK3, and also on inositol metabolism. While it is suspected that lithium's inhibition of GSK3 causes rhythm changes, it is not known if inositol polyphosphates can also affect the circadian clock. We examined whether the signaling molecule inositol hexaphosphate (IP6) has effects on circadian rhythms...
January 10, 2018: Cellular Signalling
https://www.readbyqxmd.com/read/29310970/lithium-stress-and-resilience-in-bipolar-disorder-deciphering-this-key-homeostatic-synaptic-plasticity-regulator
#2
REVIEW
Rodrigo Machado-Vieira
BACKGROUND: Lithium is the lightest metal and the only mood stabilizer that has been used for over half a century for the treatment of bipolar disorder (BD). As a small ion, lithium is omnipresent, and consequently, its molecular mechanisms and targets are widespread. Currently, lithium is a crucial pharmacotherapy for the treatment of acute mood episodes, prophylactic therapy, and suicide prevention in BD. Besides, lithium blood level is the most widely used biomarker in clinical psychiatry...
December 22, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29283064/glycogen-synthase-kinase-3%C3%AE-as-a-putative-therapeutic-target-for-bipolar-disorder
#3
Manoj P Dandekar, Samira S Valvassori, Gustavo Colombo Dal-Pont, Joao L DeQuevedo
BACKGROUND: Bipolar disorder (BD) is a debilitating mental ailment characterized by recurrent episodes of mania and depression. Primary mood-stabilizing drugs like lithium and valproate alleviate the hypomanic or mild to moderate manic episodes in patients with BD. One of the extensively studied underlying mechanisms for these pharmacological interventions is inhibition of intracellular signaling cascades associated with glycogen synthase kinase-3 beta (GSK-3β), a multi-functional serine-threonine kinase...
December 27, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/29274777/lithium-chloride-contributes-to-blood-spinal-cord-barrier-integrity-and-functional-recovery-from-spinal-cord-injury-by-stimulating-autophagic-flux
#4
Minji Tong, Zili He, Xiaoxiao Lin, Yulong Zhou, Qingqing Wang, Zengming Zheng, Jian Chen, Huazi Xu, Naifeng Tian
Blood-spinal cord barrier (BSCB) disruption following spinal cord injury (SCI) significantly compromises functional neuronal recovery. Autophagy is a potential therapeutic target when seeking to protect the BSCB. We explored the effects of lithium chloride (LiCl) on BSCB permeability and autophagy-induced SCI both in a rat model of SCI and in endothelial cells subjected to oxygen-glucose deprivation. We evaluated BSCB status using the Evans Blue dye extravasation test and measurement of tight junction (TJ) protein levels; we also assessed functional locomotor recovery...
December 21, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29232923/an-oldie-but-goodie-lithium-in-the-treatment-of-bipolar-disorder-through-neuroprotective-and-neurotrophic-mechanisms
#5
REVIEW
Eunsoo Won, Yong-Ku Kim
Lithium has been used for the treatment of bipolar disorder (BD) for the last sixty or more years, and recent studies with more reliable designs and updated guidelines have recommended lithium to be the treatment of choice for acute manic, mixed and depressive episodes of BD, along with long-term prophylaxis. Lithium's specific mechanism of action in mood regulation is progressively being clarified, such as the direct inhibition on glycogen synthase kinase 3β, and its various effects on neurotrophic factors, neurotransmitters, oxidative metabolism, apoptosis, second messenger systems, and biological systems are also being revealed...
December 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29203398/metyrapone-prevents-acute-glucose-hypermetabolism-and-short-term-brain-damage-induced-by-intrahippocampal-administration-of-4-aminopyridine-in-rats
#6
Luis García-García, Rubén Fernández de la Rosa, Mercedes Delgado, Ágata Silván, Pablo Bascuñana, Jens P Bankstahl, Francisca Gomez, Miguel A Pozo
Intracerebral administration of the potassium channel blocker 4-aminopyridine (4-AP) triggers neuronal depolarization and intense acute seizure activity followed by neuronal damage. We have recently shown that, in the lithium-pilocarpine rat model of status epilepticus, a single administration of metyrapone, an inhibitor of the 11β-hydroxylase enzyme, had protective properties of preventive nature against signs of brain damage and neuroinflammation. Herein, our aim was to investigate to which extent, pretreatment with metyrapone (150 mg/kg, i...
December 1, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/29179176/neurons-erythrocytes-and-beyond-the-diverse-functions-of-chorein
#7
Florian Lang, Lisann Pelzl, Ludger Schöls, Andreas Hermann, Michael Föller, Tilman E Schäffer, Christos Stournaras
Chorea-acanthocytosis (ChAc), a neurodegenerative disease, results from loss-of-function-mutations of the chorein-encoding gene VPS13A. Affected patients suffer from a progressive movement disorder including chorea, parkinsonism, dystonia, tongue protrusion, dysarthria, dysphagia, tongue and lip biting, gait impairment, progressive distal muscle wasting, weakness, epileptic seizures, cognitive impairment, and behavioral changes. Those pathologies may be paralleled by erythrocyte acanthocytosis. Chorein supports activation of phosphoinositide-3-kinase (PI3K)-p85-subunit with subsequent up-regulation of ras-related C3 botulinum toxin substrate 1 (Rac1) activity, p21 protein-activated kinase 1 (PAK1) phosphorylation, and activation of several tyrosine kinases...
November 28, 2017: Neuro-Signals
https://www.readbyqxmd.com/read/29156592/activation-of-trek-1-but-not-trek-2-channel-by-mood-stabilizers
#8
Eun-Jin Kim, Dong Kun Lee, Seong-Geun Hong, Jaehee Han, Dawon Kang
Earlier studies have demonstrated that the tandem pore domain weak inward rectifying K⁺ channel (TWIK)-related K⁺ (TREK)-1 channel is inhibited by antidepressants and is associated with major depression. However, little is known about the effect of mood stabilizers that are commonly used for treatment of bipolar disorder on TREK channels, members of the two-pore domain K⁺ (K2P) channel family. This study sought to investigate the effect of mood stabilizers on TREK-1 and TREK-2 channels. HEK-293A cells were transfected with human TREK-1 or TREK-2 DNA...
November 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29102713/the-anticonvulsant-activity-and-cerebral-protection-of-chronic-lithium-chloride-via-nmda-receptor-nitric-oxide-and-phospho-erk
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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