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An algorithm for neurite outgrowth reconstruction.

Christina M Weaver1, John D Pinezich, W Brent Lindquist

  • 1Department of Applied Mathematics and Statistics, State University of New York at Stony Brook, Stony Brook, NY 11794, USA.

Journal of Neuroscience Methods
|April 23, 2003
PubMed
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A new numerical method analyzes digitized microscope images to quantify neurite outgrowth in retinal explants. Iron particle exposure showed no neurotoxicity until 72 hours, with significant outgrowth reduction at doses over 10 cGy.

Area of Science:

  • Neuroscience
  • Cell Biology
  • Toxicology

Background:

  • Manual analysis of neurite outgrowth in retinal explants is prone to errors and bias.
  • Assessing in vitro neurotoxicity requires robust and reproducible quantification methods.
  • Digitized microscope imaging offers potential for automated analysis.

Purpose of the Study:

  • To develop and validate a numerical method for analyzing digitized microscope images of retinal explants.
  • To quantify neurite outgrowth and assess neurotoxic effects.
  • To evaluate the time and dose-dependent effects of iron particle exposure on retinal explants.

Main Methods:

  • A novel numerical method was developed to analyze digitized microscope images.
  • The method requires minimal input parameters and user interaction.
Keywords:
NASA Discipline Radiation HealthNASA Program Biomedical Research and CountermeasuresNon-NASA Center

Related Experiment Videos

  • It quantifies neurite outgrowth and is applicable to images of variable quality without staining.

    • Main Results:

    • The method successfully quantified neurite outgrowth in retinal explant experiments.
    • Iron particle exposure (1 GeV/nucleon) did not induce neurotoxic effects until 72 hours post-exposure.
    • Significant reductions in neurite outgrowth were observed at doses exceeding 10 cGy at the 72-hour time point.

    Conclusions:

    • The developed numerical method provides an efficient and unbiased approach for quantifying neurite outgrowth.
    • In vitro exposure to high-energy iron particles exhibits a delayed neurotoxic effect on retinal explants.
    • This study establishes a threshold for iron particle-induced neurotoxicity in retinal explants.