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Related Experiment Videos

Dendritic spine plasticity in hippocampus.

A Gazzaley1, S Kay, D L Benson

  • 1Fishberg Research Center for Neurobiology and Program in Cell Adhesion, The Mount Sinai School of Medicine, P.O. Box 1065/Neurobiology, 1425 Madison Avenue, New York, NY 10029, USA.

Neuroscience
|May 29, 2002
PubMed
Summary

Investigating dendritic spine plasticity reveals that preparation age and analysis timing significantly impact results. Different ages and circumstances may use varied cellular strategies for similar physiological outcomes.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Physiology

Background:

  • Excitatory input in the hippocampus and cerebral cortex primarily targets dendritic spines.
  • Changes in dendritic spine density or shape are linked to physiological and behavioral alterations.
  • Spine plasticity's connection to physiological responses is well-documented in the hippocampus, particularly concerning steroid hormones and long-term potentiation.

Purpose of the Study:

  • To review and present data on factors affecting dendritic spine plasticity research.
  • To highlight the influence of preparation age and analysis timing on experimental outcomes.
  • To explore how different cellular and morphological strategies are employed across ages and conditions.

Main Methods:

  • Review of existing data on dendritic spine morphology and plasticity.

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  • Presentation of new data examining the effects of preparation age.
  • Analysis of how timing of assessment influences observed spine changes.

    • Main Results:

    • Both the age of the biological preparation and the timing of analysis significantly affect experimental results.
    • Variability in results underscores the dynamic nature of dendritic spine changes.
    • Observed differences suggest age-dependent and condition-specific mechanisms.

    Conclusions:

    • Preparation age and analysis timing are critical variables in studying spine plasticity.
    • Different ages and circumstances may employ distinct cellular and morphological strategies.
    • These varied strategies can lead to similar physiological responses or behaviors, indicating adaptive plasticity.