Concept

Excitotoxicity

Related publications (66)

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Recent studies have shown that cannabis may disrupt glutamate (Glu) signaling depressing Glu tone in frequent users. Current evidence have also consistently reported lower Glu-levels in various brain regions, particularly in the medial prefrontal cortex (m ...

Springer Verlag2018

Human Cortical Pyramidal Neurons: From Spines to Spikes via Models

Idan Segev, Ruth Benavides Piccione, Guy Eyal, Yair Deitcher

We present detailed models of pyramidal cells from human neocortex, including models on their excitatory synapses, dendritic spines, dendritic NMDA- and somatic/axonal Na(+) spikes that provided new insights into signal processing and computational capabil ...

2018

Genetic Polymorphism Associated Prefrontal Glutathione and Its Coupling With Brain Glutamate and Peripheral Redox Status in Early Psychosis

Rolf Gruetter, Lijing Xin, Kim Do, Benoît Schaller, Huanxiang Lu

BACKGROUND: Oxidative stress and glutathione (GSH) metabolism dysregulation has been implicated in the pathophysiology of schizophrenia. GAG-trinucleotide repeat (TNR) polymorphisms in the glutamate-cysteine ligase catalytic gene (GCLC), the rate-limiting ...

Oxford University Press2016

L-Lactate protects neurons against excitotoxicity: implication of an ATP-mediated signaling cascade

Pierre Magistretti, Igor Allaman, Pierre Marquet, Pascal Jourdain, Kaspar Rothenfusser

Converging experimental data indicate a neuroprotective action of L-Lactate. Using Digital Holographic Microscopy, we observe that transient application of glutamate (100 μM; 2 min) elicits a NMDA-dependent death in 65% of mouse cortical neurons in culture ...

2016

GDH-Dependent Glutamate Oxidation in the Brain Dictates Peripheral Energy Substrate Distribution

Rolf Gruetter

Glucose, the main energy substrate used in the CNS, is continuously supplied by the periphery. Glutamate, the major excitatory neurotransmitter, is foreseen as a complementary energy contributor in the brain. In particular, astrocytes actively take up glut ...

Elsevier2015

Astrocytes: New Targets for the Treatment of Neurodegenerative Diseases

Pierre Magistretti, Sylvain Eric Lengacher, Charles Léonard Finsterwald

The causes of neurodegenerative disorders are multiple, and for most of them a mechanistic understanding is still lacking. However, neurodegenerative diseases such as Alzheimer disease (AD), amyotrophic lateral sclerosis (ALS) and Parkinson disease (PD) al ...

Bentham Science Publishers2015

Involvement of autophagy in hypoxic-excitotoxic neuronal death

Nikita Rudinskiy

Neuronal autophagy is increased in numerous excitotoxic conditions including neonatal cerebral hypoxia-ischemia (HI). However, the role of this HI-induced autophagy remains unclear. To clarify this role we established an in vitro model of excitotoxicity co ...

Landes Bioscience2014

Lactate promotes plasticity gene expression by potentiating NMDA signaling in neurons

Pierre Magistretti, Igor Allaman, Gabriele Grenningloh, Evelyne Ruchti, Jean-Marie Petit, Pascal Jourdain, Jiangyan Yang

L-lactate is a product of aerobic glycolysis that can be used by neurons as an energy substrate. Here we report that in neurons L-lactate stimulates the expression of synaptic plasticity-related genes such as Arc, c-Fos, and Zif268 through a mechanism invo ...

National Academy of Sciences2014

The H50Q Mutation Enhances alpha-Synuclein Aggregation, Secretion, and Toxicity

Giovanni Dietler, Hilal Lashuel, Anne-Laure Mahul Mellier, Bruno Claude Daniel Fauvet, Francesco Simone Ruggeri, Abid Oueslati, Martial Mbefo Kamdem, Ossama Mohamed Salah El-Dien El-Sayed Ibrahim Khalaf, Filip Vercruysse

Over the last two decades, the identification of missense mutations in the alpha-synuclein (alpha-Syn) gene SNCA in families with inherited Parkinson disease (PD) has reinforced the central role of alpha-Syn in PD pathogenesis. Recently, a new missense mut ...

American Society for Biochemistry and Molecular Biology2014

Necroptosis Drives Motor Neuron Death in Models of Both Sporadic and Familial ALS

Most cases of neurodegenerative diseases are sporadic, hindering the use of genetic mouse models to analyze disease mechanisms. Focusing on the motor neuron (MN) disease amyotrophic lateral sclerosis (ALS), we therefore devised a fully humanized coculture ...

2014

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