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Related Experiment Videos

Effects of nefiracetam, DM-9384 on amnesia and decrease in choline acetyltransferase activity induced by

T Shiotani1, K Tohyama, K Murase

  • 1Tokyo Research and Development Center, Daiichi Pharmaceutical Co. Ltd., Japan.

Journal of Neural Transmission. General Section
|January 1, 1992
PubMed
Summary
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Nefiracetam (DM-9384) improved memory in an animal model of amnesia. This GABA derivative protected against memory loss and supported brain function, suggesting potential therapeutic benefits for cognitive impairment.

Area of Science:

  • Neuroscience
  • Pharmacology
  • Cognitive Science

Background:

  • Cycloheximide (CXM) is used to induce amnesia in animal models.
  • Understanding the mechanisms behind amnesia is crucial for developing treatments.
  • Nefiracetam (DM-9384) is a cyclic GABA derivative with potential nootropic effects.

Purpose of the Study:

  • To investigate the effects of nefiracetam (DM-9384) on cycloheximide (CXM)-induced amnesia.
  • To explore the neurochemical mechanisms underlying nefiracetam's action in an amnesic model.

Main Methods:

  • Utilized a passive avoidance task in an animal model.
  • Administered nefiracetam (DM-9384) prior to training.
  • Assessed the impact of CXM and DM-9384 on step-down latency and choline acetyltransferase activity in the cerebral cortex.

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Main Results:

  • Pre-training administration of nefiracetam (DM-9384) significantly attenuated CXM-induced amnesia.
  • Nefiracetam prolonged the step-down latency, indicating improved memory retention.
  • DM-9384 protected against the CXM-induced inhibition of choline acetyltransferase activity in the cerebral cortex.

Conclusions:

  • Nefiracetam (DM-9384) demonstrates efficacy in mitigating amnesia induced by cycloheximide (CXM).
  • The findings suggest that DM-9384's effects involve interaction with the cholinergic neuronal system.
  • Enhanced protein synthesis in the brain may contribute to nefiracetam's amnesia-attenuating properties.