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Arecoline Facilitates Object Recognition in Mice.

Sena Iijima1, Kano Izumo1, Haruka Suzuki1

  • 1Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan.

Biological & Pharmaceutical Bulletin
|June 17, 2026
PubMed
Summary
This summary is machine-generated.

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Acute arecoline administration, derived from betel nuts, significantly improved object recognition memory in young, healthy mice. This cognitive enhancement occurred without altering anxiety or motor activity levels.

Area of Science:

  • Neuroscience
  • Pharmacology
  • Cognitive Science

Background:

  • Arecoline, a primary alkaloid in betel nuts, is known to influence cognitive functions.
  • The specific impact of arecoline on memory in young, healthy individuals requires further elucidation.

Purpose of the Study:

  • To investigate the effects of acute arecoline administration on object recognition memory in young, healthy mice.
  • To determine the mechanisms underlying any observed changes in cognitive performance.

Main Methods:

  • Administration of arecoline or a vehicle control to mice.
  • Assessment of object recognition memory using a novel object recognition task.
  • Evaluation of locomotor activity, anxiety-like behavior, and exploratory motivation.
Keywords:
arecolinememorymouse

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Last Updated: Jun 19, 2026

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Main Results:

  • Arecoline-treated mice demonstrated a significantly higher discrimination index compared to controls.
  • No significant changes were observed in locomotor activity, anxiety, or general exploratory motivation.
  • Time-series analysis indicated sustained high discrimination ability in arecoline-treated mice throughout the test.

Conclusions:

  • Acute arecoline administration enhances object recognition memory in young, healthy mice.
  • The observed cognitive enhancement may be mediated by improvements in cholinergic-dependent attention and memory encoding.