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- W1989533893 abstract "L-Glutamate is considered the most important excitatory amino acid in the mammalian brain. Strict control of its concentration in the brain interstitial fluid is important to maintain neurotransmission and avoid excitotoxicity. The role of astrocytes in handling L-glutamate transport and metabolism is well known, however endothelial cells may also play an important role through mediating brain-to-blood L-glutamate efflux. Expression of excitatory amino acid transporters has been demonstrated in brain endothelial cells of bovine, human, murine, rat and porcine origin. These can account for high affinity concentrative uptake of L-glutamate from the brain interstitial fluid into the capillary endothelial cells. The mechanisms in between L-glutamate uptake in the endothelial cells and L-glutamate appearing in the blood are still unclear and may involve a luminal transporter for L-glutamate, metabolism of L-glutamate and transport of metabolites or a combination of the two. However, both in vitro and in vivo studies demonstrated blood-to-brain transport of L-glutamate, at least during pathological events. This review summarizes the current knowledge on the brain-to-blood L-glutamate efflux hypothesis including possible mechanisms to account for the transport, in vivo studies on blood glutamate scavenging and potential clinical relevance of the phenomenon." @default.
- W1989533893 created "2016-06-24" @default.
- W1989533893 creator A5010563977 @default.
- W1989533893 creator A5018587328 @default.
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- W1989533893 date "2014-11-01" @default.
- W1989533893 modified "2023-10-05" @default.
- W1989533893 title "Glutamate Efflux at the Blood–Brain Barrier: Cellular Mechanisms and Potential Clinical Relevance" @default.
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- W1989533893 doi "https://doi.org/10.1016/j.arcmed.2014.11.004" @default.
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