Excitotoxicité

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Publications associées (29)

Microengineered analytical tools for cell-based studies in environmental monitoring, pharmacology and neuroscience

Sara Talaei

Monitoring cells’ Tehavior in-vitro and evaluation of their response to different types of stimulations are the major oTjectives in cell-Tased studies. The results of these studies answer questions on the physiology of the cells, cell-to-cell signaling and ...

EPFL2013

High-resolution spatial mapping of changes in the neurochemical profile after focal ischemia in mice

Rolf Gruetter, Hongxia Lei, Malte Alf

After ischemic stroke, the ischemic damage to brain tissue evolves over time and with an uneven spatial distribution. Early irreversible changes occur in the ischemic core, whereas, in the penumbra, which receives more collateral blood flow, the damage is ...

Wiley-Blackwell2012

Comparative analyses of Purkinje cell gene expression profiles reveal shared molecular abnormalities in models of different polyglutamine diseases

Polyglutamine (PolyQ) diseases have common features that include progressive selective neurodegeneration and the formation of protein aggregates. There is growing evidence to suggest that critical nuclear events lead to transcriptional alterations in PolyQ ...

Elsevier Science Bv2012

A Semisynthetic Fluorescent Sensor Protein for Glutamate

Kai Johnsson, Luc Reymond, Rudolf Griss, Matthias Albert Brun, Kui Thong Tan

We report the semisynthesis of a fluorescent glutamate sensor protein on cell surfaces. Sensor excitation at 547 nm yields a glutamate-dependent emission spectrum between 550 and 700 nm that can be exploited for ratiometric sensing. On cells, the sensor di ...

2012

Micro-engineering the Cerebral Cortical Cell Niche : A new Cell Culture Tool for Neuroscience Research

Anja Kunze

A major problem in traditional cell culture methods, such as Petri dishes and culture flasks, is the very simplified artificial environment around the cells. Traditional cell culture methods lack features of the native cell niche, such as gradients and cel ...

EPFL2012

Glutamate transport decreases mitochondrial pH and modulates oxidative metabolism in astrocytes

Hélène Danielle Perreten Lambert, Sylvain Eric Lengacher, Jean-Yves Chatton

During synaptic activity, the clearance of neuronally released glutamate leads to an intracellular sodium concentration increase in astrocytes that is associated with significant metabolic cost. The proximity of mitochondria at glutamate uptake sites in as ...

2011

Lentiviral Transgenesis as a Tool to Study the Role of Uncoupling Protein Isoforms in the Nervous System

Hélène Danielle Perreten Lambert

A tight coupling exists between synaptic activity and glucose utilization by astrocytes. Metabolic cooperation between neurons and astrocytes mediates this coupling. During synaptic activation, glutamate that is released in the synaptic cleft as a neurotra ...

EPFL2011

Determination of Transmembrane Water Fluxes in Neurons Elicited by Glutamate Ionotropic Receptors and by the Co-transporters KCC2 and NKCC1: A Digital Holographic Microscopy Study

Pierre Magistretti, Christian Depeursinge, Benjamin Rappaz, Pierre Marquet, Nicolas Pavillon, Pascal Jourdain, Daniel Boss, Corinne Moratal

Digital holographic microscopy (DHM) is a noninvasive optical imaging technique that provides quantitative phase images of living cells. In a recent study, we showed that the quantitative monitoring of the phase signal by DHM was a simple label-free method ...

Society for Neuroscience2011

Synergistic NGF/B27 Gradients Position Synapses Heterogeneously in 3D Micropatterned Neural Cultures

Philippe Renaud, Dominique Zosso, Ana Valero, Anja Kunze

Native functional brain circuits show different numbers of synapses (synaptic densities) in the cerebral cortex. Until now, different synaptic densities could not be studied in vitro using current cell culture methods for primary neurons. Herein, we presen ...

Public Library of Science2011

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