Modulating Excitatory Synaptic Neurotransmission: Potential Treatment for Neurological Disease?

@article{Yamada1998ModulatingES,
  title={Modulating Excitatory Synaptic Neurotransmission: Potential Treatment for Neurological Disease?},
  author={Kelvin A. Yamada},
  journal={Neurobiology of Disease},
  year={1998},
  volume={5},
  pages={67-80}
}
  • Kelvin A. Yamada
  • Published 1 August 1998
  • Biology, Psychology, Chemistry
  • Neurobiology of Disease
Excitatory neurotransmission at many CNS synapses depends upon AMPA-type glutamate receptors. Derangements in AMPA receptor-mediated synaptic transmission may be a contributing factor in neurological and neurodegenerative diseases and could be a target for therapeutic intervention. Drugs that positively modulate AMPA receptors by reducing AMPA receptor desensitization and/or slowing AMPA receptor deactivation, such as thiazide derivative (cyclothiazide, diazoxide, IDRA 21) and benzoylpiperidine… 
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References

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AMPA receptor activation is rapidly toxic to cortical astrocytes when desensitization is blocked
TLDR
Although cultured astrocytes express functional glutamate receptors, they are generally resistant to excitotoxic cell death, and the extent of AMPA receptor desensitization may be an important determinant of glial vulnerability to excITotoxic insults.
Global Ischemia Induces Downregulation of Glur2 mRNA and Increases AMPA Receptor-Mediated Ca2+ Influx in Hippocampal CA1 Neurons of Gerbil
TLDR
It is suggested that “switching off” GluR2 expression in CAI after an ischemic insult is translated into formation of new AMPA receptors lacking the GLUR2 subunit, which increases AMPA-receptor-mediated Ca2+ entry in response to endogenous glutamate and enhances glutamate pathogenicity in this region.
The diazoxide derivative IDRA 21 enhances ischemic hippocampal neuron injury
TLDR
It is demonstrated that glutamate plus IDRA 21 kills cultured rat hippocampal neurons by AMPA receptor activation, and, in vivo, 12 and 24 mg/kg of IDRA21 given orally increases CA1 neuron loss produced by 10 minutes of global ischemia.
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