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Central European Journal of Biology

, Volume 5, Issue 4, pp 466–471 | Cite as

The effects of exogenous testosterone on spatial memory in rats

  • Július Hodosy
  • Ján Páleš
  • Daniela Ostatníková
  • Peter CelecEmail author
Research Article

Abstract

Testosterone (T) is known to affect spatial abilities in men and women. Studies focusing on this relationship showed that both endogenous variability of T and administration of exogenous T, altered mental rotation and spatial visualization. Organizational and activational effects of T can be separately identified. The aim of our study was to evaluate the activational effects of exogenous T on spatial memory in male and female rats. T was administered 3 times a week over a two week period in either 1 mg/kg for low testosterone group or 10 mg/kg for high testosterone group. The Morris water maze was performed to assess the rat’s working and reference spatial memory. T and estradiol levels were measured in plasma. Increase in plasma T levels was confirmed in the experimental groups in comparison to the control groups (receiving sterile oil, 3 times a week over a two week period). Low dose T impaired working, but improved reference memory in female rats. In male rats the negative effects of T (both doses) on reference memory were shown. This experiment showed that the activational effects of exogenous testosterone on spatial memory of rats were gender and dose-dependent.

Keywords

Testosterone Androgens Spatial abilities Sex differences Water maze 

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Copyright information

© © Versita Warsaw and Springer-Verlag Wien 2010

Authors and Affiliations

  • Július Hodosy
    • 1
    • 2
    • 3
  • Ján Páleš
    • 1
  • Daniela Ostatníková
    • 2
  • Peter Celec
    • 1
    • 4
    • 5
    Email author
  1. 1.Institute of Molecular BiomedicineComenius UniversityBratislavaSlovakia
  2. 2.Institute of PhysiologyComenius UniversityBratislavaSlovakia
  3. 3.Faculty HospitalComenius UniversityBratislavaSlovakia
  4. 4.Institute of PathophysiologyComenius UniversityBratislavaSlovakia
  5. 5.Department of Molecular BiologyComenius UniversityBratislavaSlovakia

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