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Related Experiment Videos

[Reactive changes in autonomic synapses during frequency electric stimulation]

O S Sutnikov, Iu P Pushkarev, G A Zolotareva

    Biulleten' Eksperimental'Noi Biologii I Meditsiny
    |December 1, 1981
    PubMed
    Summary

    High-frequency electrical stimulation causes reactive synaptic changes in vegetative neurons. These changes include protein aggregation and alterations in synaptic vesicles, explained by colloid-chemical principles.

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    Area of Science:

    • Neuroscience
    • Cell Biology
    • Biophysics

    Context:

    • Investigates synaptic modifications in isolated intratrunkal vegetative neurons.
    • Utilizes high-frequency orthodromal electrical stimulation as a stimulus.
    • Employs vital phase-contrast microscopy, electron microscopy, and vital staining with methylene blue.

    Purpose:

    • To examine the reactive modifications of synapses under specific electrical stimulation.
    • To understand the ultrastructural and morphological changes occurring at the synapse.
    • To interpret these changes using a colloid-chemical framework.

    Summary:

    • High-frequency electrical stimulation induced flocculent aggregation of synaptoplasma and vesicles, linked to increased protein adhesiveness.
    • Observed matrix translucence and rounding of synaptic buds due to neuroplasma hydration changes.

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  • Noted a decrease in light synaptic vesicles with the emergence of osmiophilic bodies, dense-core vesicles, and glycogen-like granules.

    • Impact:

    • Provides insights into the dynamic, reactive nature of neuronal synapses.
    • Offers a colloid-chemical perspective on synaptic plasticity and function.
    • Contributes to understanding cellular responses to electrical stimuli.