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Related Experiment Videos

Acute ethanol administration selectively impairs spatial memory in C57BL/6J mice.

Raymond B Berry1, Douglas B Matthews

  • 1Department of Psychology, The University of Memphis, Memphis, TN 38152, USA.

Alcohol (Fayetteville, N.Y.)
|April 7, 2004
PubMed
Summary

Acute ethanol administration selectively impairs spatial memory in C57BL/6J mice. Higher doses of ethanol significantly affected spatial memory performance, but not nonspatial memory.

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Area of Science:

  • Neuroscience
  • Behavioral Pharmacology
  • Animal Models

Background:

  • Ethanol's effects on memory are well-documented in rats.
  • The impact of acute ethanol on spatial memory in C57BL/6J mice remains largely unexplored.
  • Spatial memory is crucial for navigation and learning.

Purpose of the Study:

  • To investigate the selective effects of acute ethanol administration on spatial and nonspatial memory in C57BL/6J mice.
  • To determine dose-dependent effects of ethanol on memory performance.
  • To compare ethanol's impact on spatial versus nonspatial memory tasks.

Main Methods:

  • Male C57BL/6J mice were trained in the Morris water maze for spatial and nonspatial tasks.
  • Mice received intraperitoneal injections of ethanol (1.25, 1.75, 2.25 g/kg) or saline.

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  • Memory performance was assessed 30 minutes post-injection using latency and path length measures.

    • Main Results:

    • Acute ethanol administration selectively impaired spatial memory at doses of 1.75 and 2.25 g/kg (P<.05).
    • Nonspatial memory was not significantly impaired, except at the highest ethanol dose (2.25 g/kg).
    • Path length analysis corroborated findings, showing selective spatial memory impairment at 2.25 g/kg.

    Conclusions:

    • Acute ethanol administration selectively impairs spatial memory in C57BL/6J mice.
    • The findings highlight a specific vulnerability of spatial memory to ethanol intoxication.
    • This study provides valuable insights into the neurobiological mechanisms underlying ethanol-induced memory deficits.