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Related Experiment Videos

A centrally active drug that modulates AMPA receptor gated currents

A Arai1, M Kessler, P Xiao

  • 1Center for the Neurobiology of Learning and Memory, University of California, Irvine 92717-3800.

Brain Research
|February 28, 1994
PubMed
Summary

The drug 1-(1,3-benzodioxol-5-ylcarbonyl)-piperidine (1-BCP) enhances brain responses and memory. It works by modulating alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA) receptors in the hippocampus.

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Area of Science:

  • Neuroscience
  • Pharmacology

Background:

  • Systemic administration of 1-(1,3-benzodioxol-5-ylcarbonyl)-piperidine (1-BCP) has shown potential in enhancing hippocampal functions and memory in rats.
  • The precise mechanism underlying 1-BCP's effects on neuronal activity requires further elucidation.

Purpose of the Study:

  • To investigate the mechanism of action of 1-BCP on neuronal signaling.
  • To determine the effects of 1-BCP on alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA) receptors.

Main Methods:

  • Utilized patch-clamp electrophysiology on membrane patches from cultured hippocampal slices.
  • Conducted in vitro slice experiments to measure field excitatory postsynaptic potentials (fEPSPs).

Main Results:

  • 1-BCP significantly increased the decay time of AMPA receptor-mediated inward currents in a concentration-dependent and reversible manner.

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  • Peak currents mediated by AMPA receptors were also enhanced by 1-BCP, though to a lesser extent.
  • In vitro slice experiments demonstrated parallel effects of 1-BCP on field EPSPs.

    • Conclusions:

    • 1-BCP acts as a centrally active modulator of AMPA receptors.
    • The drug's effects on AMPA receptor kinetics contribute to its reported cognitive-enhancing properties.