Nonsynaptic glycine receptor activation during early neocortical development. Flint, A C, Liu, X, & Kriegstein, A R Neuron, 20(1):43–53, United States, January, 1998. abstract bibtex Glycine receptors (GlyRs) contribute to fast inhibitory synaptic transmission in the brain stem and spinal cord. GlyR subunits are expressed in the developing neocortex, but a neurotransmitter system involving cortical GlyRs has yet to be demonstrated. Here, we show that GlyRs in immature neocortex are excitatory and activated by a nonsynaptically released endogenous ligand. Of the potential ligands for cortical GlyRs, taurine is by far the most abundant in the developing neocortex. We found that taurine is stored in immature cortical neurons and that manipulations known to elevate extracellular taurine cause GlyR activation. These data indicate that nonsynaptically released taurine activates GlyRs during neocortical development. As fetal taurine deprivation can cause cortical dysgenesis, it is possible that taurine influences neocortical development by activating GlyRs.
@ARTICLE{Flint1998-np,
title = "Nonsynaptic glycine receptor activation during early neocortical
development",
author = "Flint, A C and Liu, X and Kriegstein, A R",
abstract = "Glycine receptors (GlyRs) contribute to fast inhibitory synaptic
transmission in the brain stem and spinal cord. GlyR subunits are
expressed in the developing neocortex, but a neurotransmitter
system involving cortical GlyRs has yet to be demonstrated. Here,
we show that GlyRs in immature neocortex are excitatory and
activated by a nonsynaptically released endogenous ligand. Of the
potential ligands for cortical GlyRs, taurine is by far the most
abundant in the developing neocortex. We found that taurine is
stored in immature cortical neurons and that manipulations known
to elevate extracellular taurine cause GlyR activation. These
data indicate that nonsynaptically released taurine activates
GlyRs during neocortical development. As fetal taurine
deprivation can cause cortical dysgenesis, it is possible that
taurine influences neocortical development by activating GlyRs.",
journal = "Neuron",
volume = 20,
number = 1,
pages = "43--53",
month = jan,
year = 1998,
address = "United States",
language = "en"
}
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