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How straight do axons grow?

M J Katz

    The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
    |March 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Embryonic frog and chick axons exhibit a natural tendency to grow straight, not randomly. This intrinsic straightness, possibly due to axonal resistance to bending, may influence in vivo axon development.

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    Area of Science:

    • Neuroscience
    • Developmental Biology
    • Cell Biology

    Background:

    • Axon growth is crucial for neural circuit formation.
    • Understanding axon guidance mechanisms is key to developmental neuroscience.

    Purpose of the Study:

    • To analyze the growth paths of embryonic frog and chick axons.
    • To determine if axon growth is random or directed.
    • To investigate the underlying mechanisms of axon straightness.

    Main Methods:

    • Culturing embryonic frog and chick neurons on acid-rinsed glass.
    • Measuring detailed axon growth paths during elongation.
    • Applying mathematical analyses to growth trajectory data.

    Main Results:

    Related Experiment Videos

    • Axons demonstrated a significant tendency to grow straight, not randomly.
    • Growth cones alternated sides, but the axon maintained a consistent orientation.
    • Axonal resistance to bending appears to be the cause of straight growth.

    Conclusions:

    • Embryonic axon growth exhibits intrinsic straightness.
    • This natural straightness may be a critical factor in establishing in vivo axon patterns.
    • Axonal mechanical properties influence neural development.