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Related Experiment Videos

Two-way shuttlebox avoidance conditioning and brain NADH in rats.

Z Shen1, G Wang, S Z Lin

  • 1Department of Psychology, Peking University, Beijing, P.R.C.

Physiology & Behavior
|October 1, 1990
PubMed
Summary

Amphetamine enhanced shuttle behavior and brain NADH levels in rats. Caffeine

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Area of Science:

  • Neuroscience
  • Pharmacology
  • Brain Metabolism

Background:

  • Investigating the impact of psychostimulants on animal behavior and brain function.
  • Understanding the role of reduced nicotinamide adenine dinucleotide (NADH) in neural activity.

Purpose of the Study:

  • To examine the effects of amphetamine and caffeine on shuttle behavior and regional brain metabolism in rats.
  • To correlate behavioral changes with alterations in brain NADH concentrations.

Main Methods:

  • Administered amphetamine (1.5 mg/kg) and caffeine (120 mg/kg, 75 mg/kg) to 56 rats.
  • Measured shuttle behavior, including avoidance responses and response speed.
  • Assessed regional brain metabolism by measuring NADH concentrations.

Main Results:

  • Amphetamine significantly potentiated shuttle behavior and increased hippocampal NADH levels.
  • Low-dose caffeine (75 mg/kg) enhanced avoidance responses.
  • High-dose caffeine (120 mg/kg) inhibited avoidance responses without affecting NADH concentrations in discrete brain regions.

Conclusions:

  • Amphetamine and caffeine exert differential effects on rat shuttle behavior and brain metabolism.
  • Hippocampal NADH levels may be a biomarker for amphetamine's behavioral effects.
  • Caffeine's behavioral impact is dose-dependent and not consistently linked to NADH changes in this study.

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