Results 41 to 50 of about 2,775,779 (308)

Calpain-Independent Intracellular Protease Activity Is Elevated in Excitotoxic Cortical Neurons Prior to Delayed Calcium Deregulation and Mitochondrial Dysfunction

Biomolecules, 2022
Glutamate excitotoxicity contributes to many neurodegenerative diseases. Excessive glutamate receptor-mediated calcium entry causes delayed calcium deregulation (DCD) that coincides with abrupt mitochondrial depolarization.
Brian M. Polster, Karla A. Mark, Rafael Arze, Derek Hudson   +3 more
doaj   +1 more source

Modulation of glutamate transport and receptor binding by glutamate receptor antagonists in EAE rat brain. [PDF]

PLoS ONE, 2014
The etiology of multiple sclerosis (MS) is currently unknown. However, one potential mechanism involved in the disease may be excitotoxicity. The elevation of glutamate in cerebrospinal fluid, as well as changes in the expression of glutamate receptors ...
Grzegorz Sulkowski, Beata Dąbrowska-Bouta, Elżbieta Salińska, Lidia Strużyńska   +3 more
doaj   +1 more source

Incentive learning underlying cocaine relapse requires mGluR5 receptors located on dopamine D1 receptor-expressing neurons [PDF]

, 2010
Understanding the psychobiological basis of relapse remains a challenge in developing therapies for drug addiction. Relapse in cocaine addiction often occurs following exposure to environmental stimuli previously associated with drug taking.
Bilbao, Ainhoa, Chai, Minqiang, Crombag, Hans, Engblom, David, Halbout, Briac, Novak, Martin, O'Connor, Eoin, Parkitna, Jan Rodriguez, Schütz, Günther, Spanagel, Rainer, Stephens, David N, Su, Tian   +11 more
core   +2 more sources

Energetics of Glutamate Binding to an Ionotropic Glutamate Receptor [PDF]

The Journal of Physical Chemistry B, 2017
Ionotropic glutamate receptors (iGluRs) are ligand-gated ion channels that are responsible for the majority of excitatory transmission at the synaptic cleft. Mechanically speaking, agonist binding to the ligand binding domain (LBD) activates the receptor by triggering a conformational change that is transmitted to the transmembrane region, opening the ...
Alvin Yu, Alvin Yu, Albert Y. Lau, Albert Y. Lau   +3 more
openaire   +5 more sources

Posttranslational Modification Biology of Glutamate Receptors and Drug Addiction

Frontiers in Neuroanatomy, 2011
Posttranslational covalent modifications of glutamate receptors remain a hot topic. Early studies have established that this family of receptors, including almost all ionotropic and metabotropic glutamate receptor subtypes, undergoes active ...
Li-Min eMao, Ming-Lei eGuo, Dao-Zhong eJin, Eugene E Fibuch, Eun Sang eChoe, John Q Wang   +5 more
doaj   +1 more source

Allosteric modulators enhance agonist efficacy by increasing the residence time of a GPCR in the active state

Nature Communications, 2021
Here, the authors use smFRET to assess the structural dynamics of metabotropic glutamate receptor mGlu2 and show that a positive allosteric modulator or the Gi protein stabilize mGlu2 in the glutamate-induced active state, leading to the full activation ...
Anne-Marinette Cao, Robert B. Quast, Fataneh Fatemi, Philippe Rondard, Jean-Philippe Pin, Emmanuel Margeat   +5 more
doaj   +1 more source

Two Adjacent Phenylalanines In the NMDA Receptor GluN2A Subunit M3 Domain Interactively Regulate Alcohol Sensitivity and Ion Channel Gating [PDF]

, 2017
The N-methyl-d-aspartate (NMDA) receptor is a key target of ethanol action in the central nervous system. Alcohol inhibition of NMDA receptor function involves small clusters of residues in the third and fourth membrane-associated (M) domains.
Dwyer, Donard S., Peoples, Robert W., Ren, Hong, Wu, Man, Zhao, Yulin   +4 more
core   +2 more sources

Glutamate, Glutamate Receptors, and Downstream Signaling Pathways [PDF]

International Journal of Biological Sciences, 2013
Glutamate is a nonessential amino acid, a major bioenergetic substrate for proliferating normal and neoplastic cells, and an excitatory neurotransmitter that is actively involved in biosynthetic, bioenergetic, metabolic, and oncogenic signaling pathways. Glutamate signaling activates a family of receptors consisting of metabotropic glutamate receptors (
Stacey S. Willard, Shahriar Koochekpour
openaire   +3 more sources

Block of NMDA receptor channels by endogenous neurosteroids: implications for the agonist induced conformational states of the channel vestibule [PDF]

, 2015
N-methyl-D-aspartate receptors (NMDARs) mediate synaptic plasticity, and their dysfunction is implicated in multiple brain disorders. NMDARs can be allosterically modulated by numerous compounds, including endogenous neurosteroid pregnanolone sulfate ...
A Malayev, A Sali, A Villarroel, AI Sobolevskii, AI Sobolevsky, AI Sobolevsky, AI Sobolevsky, BO Dubrovsky, C Beck, CE Weaver, CE Weaver Jr., CH Lee, CL Kussius, CT Smothers, CT Smothers, E Karakas, E Stastna, EE Baulieu, G Abdrachmanova, GQ Chen, H Havlikova, HR Chang, I Cerny, J Borovska, J Dai, J Zuo, JA Kemp, K Kashiwagi, K Vales, L Nowak, L Rambousek, L Vyklicky Jr., LM Arnostova, LP Wollmuth, M Benveniste, M Hollmann, M Horak, M Korinek, M Park-Chung, M Park-Chung, M Park-Chung, M Petrovic, M Sheng, M Xu, MA Larkin, MA Lomize, MA Lynch, MF Sanner, ML Mayer, MM Zarei, N Kashiwabuchi, NJ Sucher, PA Lapchak, R Kancheva, R Kazi, R Sprengel, RH Evans, S Schreier, SE Murthy, SF Traynelis, SH Mellon, SI Mota   +61 more
core   +1 more source

Binding of glutamate to the umami receptor [PDF]

Biophysical Chemistry, 2010
The umami taste receptor is a heterodimer composed of two members of the T1R taste receptor family: T1R1 and T1R3. It detects glutamate in humans, and is a more general amino acid detector in other species. We have constructed homology models of the ligand binding domains of the human umami receptor (based on crystallographic structures of the ...
Lopez Cacales, J., Oliviera Costa, S., de Groot, B., Walters, D.   +3 more
openaire   +5 more sources