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Related Experiment Videos

Neurofibrillary pathology: current status and research perspectives.

H M Wisniewski, D Soifer

    Mechanisms of Ageing and Development
    |January 1, 1979
    PubMed
    Summary

    Neurofibrils are complex neuronal structures. Disruptions in their assembly, particularly in brain cells, can lead to neurofibrillary tangles associated with dementia.

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    Area of Science:

    • Neuroscience
    • Cell Biology
    • Biochemistry

    Background:

    • Neurofibrils, visible via light microscopy, are complex structures composed of neurotubules and neurofilaments.
    • Neurofibrillary tangles are hallmarks of various pathological conditions, notably presenile and senile dementia.
    • These tangles consist of either paired helical filaments or single filaments.

    Purpose of the Study:

    • To review the morphology, distribution, and biochemistry of fibrillary structures within neurons.
    • To examine the assembly of neurotubules and the effects of drugs on this process.
    • To explore potential implications for experimentally inducing neurofibrillary pathology.

    Main Methods:

    • Electron microscopy to elucidate the heterogeneous nature of neurofibrils.
    • Morphological and biochemical analysis of fibrillary structures.
    • Review of existing literature on neurotubule assembly and drug interactions.

    Main Results:

    • Neurofibrils are heterogeneous, comprising neurotubules and neurofilaments.
    • Pathological conditions like dementia feature neurofibrillary tangles made of single or paired helical filaments.
    • Normal neurofibrillary structures involve single forms of pleomorphic proteins assembled by healthy neurons.

    Conclusions:

    • Interference with the normal assembly process of neuronal proteins can result in neurofibrillary tangle deposition.
    • Morphological and biochemical evidence suggests approaches for experimental study of neurofibrillary pathology.
    • Understanding protein assembly is key to neurofibrillary tangle formation and potential therapeutic strategies.

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