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Neurobiology of Disease
Article . 2010 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
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Neurobiology of Disease
Article . 2010
Data sources: DOAJ
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Increased expression of glutamate transporters in subcortical white matter after transient focal cerebral ischemia

Authors: Miroslav Gottlieb; Miroslav Gottlieb; Carlos Matute; Amaia M. Arranz; Fernando Pérez-Cerdá;

Increased expression of glutamate transporters in subcortical white matter after transient focal cerebral ischemia

Abstract

Transient focal cerebral ischemia leads to extensive excitotoxic glial damage in the subcortical white matter. Efficient reuptake of released glutamate is essential for preventing glutamate receptor overstimulation and neuronal and glial death. The present study evaluates the expression of the main glutamate transporters (EAAT1, EAAT2, and EAAT3) in subcortical white matter of the rat after transient middle cerebral artery occlusion. Western blot analysis and immunohistochemistry show an increase in the expression of EAAT1 and EAAT2 in subcortical white matter early after ischemia which subsequently decreases at longer reperfusion periods. However, expression of both EAAT1 and EAAT2 remains higher in astrocytes forming the gliotic scar and in microglial/macrophage cells at the border of or within the infarct area, respectively. Taken together, these results indicate that there is a transient enhanced expression of EAATs in the subcortical white matter early after ischemia. Our findings reveal an adaptive response of subcortical white matter to increased levels of glutamate during focal cerebral ischemia which may limit excitotoxic damage.

Keywords

Male, Time Factors, Blotting, Western, Neurosciences. Biological psychiatry. Neuropsychiatry, Nerve Fibers, Myelinated, Brain Ischemia, Ischemia, Animals, Excitotoxicity, Rats, Wistar, Neurologic Examination, Glutamate transporters, Macrophages, Brain, Infarction, Middle Cerebral Artery, Subcortical white matter, Immunohistochemistry, Rats, Excitatory Amino Acid Transporter 1, Excitatory Amino Acid Transporter 3, Excitatory Amino Acid Transporter 2, Astrocytes, Microglia, RC321-571

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
36
Top 10%
Top 10%
Top 10%
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