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A useful programme in BASIC for axonal morphometry with introduction of new cytoskeletal parameters.

E Fernández1, N Cuenca, J De Juan

  • 1Departamento de Histología, Facultad de Medicina, Universidad de Alicante, Spain.

Journal of Neuroscience Methods
|October 1, 1991
PubMed
Summary

A new BASIC program offers comprehensive morphometric analysis for nerve fiber electron micrographs. This tool quantifies axonal components and introduces novel parameters for cytoskeletal distribution uniformity.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Biophysics

Background:

  • Growing interest in axon structure and component quantification.
  • Limited availability of computer programs for morphometric analysis of nerve fibers.

Purpose of the Study:

  • To present a comprehensive BASIC program for morphometric analysis of cross-sectional nerve fibers.
  • To facilitate the quantification of axonal components and introduce new parameters for cytoskeletal distribution analysis.

Main Methods:

  • Development of a BASIC program for morphometric analysis of electron micrographs.
  • Input involves drawings of fiber/axonal contours and microtubule/neurofilament dots.
  • Calculation of standard morphometric parameters (area, diameter, form factor, R-proportion, myelin thickness, g-ratio).

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Main Results:

  • The program calculates numerous parameters including fiber and axon dimensions, microtubule and neurofilament density, and myelin thickness (g-ratio).
  • Introduced three novel parameters: inter-microtubule/neurofilament distances, equilateral index, and cytoskeletal intermingling index.
  • Demonstrated utility on adult rat optic nerve fibers, applicable to diverse axonal morphometry projects.

Conclusions:

  • The developed BASIC program provides a comprehensive tool for axonal morphometric analysis.
  • The program enhances the study of nerve fiber structure by quantifying components and assessing cytoskeletal organization.
  • This software is adaptable for various research applications in axonal morphometry.