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Related Experiment Videos

Exercise-induced changes in cardiac gene expression and its relation to spatial maze performance.

Natalie B Schweitzer1, Helaine M Alessio, Stephen D Berry

  • 1Department of Zoology, Miami University, Oxford, OH 45056, USA.

Neurochemistry International
|October 6, 2005
PubMed
Summary

Physical activity enhances spatial maze performance in rats by influencing cardiovascular and neural gene expression in the heart. Exercise impacts both cognitive function and cardiac gene profiles.

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Area of Science:

  • Exercise science
  • Neuroscience
  • Cardiovascular research

Background:

  • Cognitive performance is affected by physical activity and inactivity.
  • Hyperlipidemia is linked to cognitive impairment.
  • Gene expression in cardiac tissue can be influenced by physical activity.

Purpose of the Study:

  • To investigate how physical activity access impacts cognitive performance in a spatial maze.
  • To examine gene expression in heart tissue related to cardiovascular function and neural regulation.
  • To determine if cardiac gene expression changes correlate with physical activity levels and cognitive performance.

Main Methods:

  • Male Sprague-Dawley rats (n=72) were divided into three groups with varying physical activity access: sedentary, twice-weekly, and every-other-day exercise.

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  • Cognitive performance was assessed using a spatial maze navigation task.
  • Gene expression in heart tissue was analyzed for cardiovascular and neural-related genes.

    • Main Results:

    • Rats with physical activity access showed enhanced spatial maze performance compared to the sedentary group.
    • Both cardiovascular and neural-related gene expressions in the heart differed significantly among the groups based on physical activity access.
    • Specific genes involved in heart rate, cholesterol biosynthesis, blood pressure, cell adhesion, neurite outgrowth, neuroplasticity, and neurogenesis showed altered expression.

    Conclusions:

    • Access to physical activity improves cognitive performance in a spatial maze task.
    • Physical activity significantly alters the expression of both cardiovascular and neural-related genes within cardiac tissue.
    • These shifts in cardiac gene expression may play a role in mediating the effects of physical activity on learning and cognitive function.