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Related Experiment Videos

[Changes in the dendrites in chronic morphine poisoning]

N N Bogolepov

    Arkhiv Anatomii, Gistologii I Embriologii
    |October 1, 1981
    PubMed
    Summary

    Morphine hydrochloride administration causes significant ultrastructural changes in rat dendrites, including microtubule loss and mitochondrial alterations. These dendritic modifications may impair neural cell receptor function.

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    Area of Science:

    • Neuroscience
    • Cell Biology
    • Pharmacology

    Context:

    • Investigates the impact of chronic morphine hydrochloride exposure on neuronal ultrastructure.
    • Examines dendritic morphology in Sprague-Dawley rats subjected to varying morphine dosages and durations.

    Purpose:

    • To elucidate the ultrastructural alterations in dendrites following prolonged morphine administration.
    • To correlate observed dendritic changes with potential functional deficits in neural cells.

    Summary:

    • Morphine hydrochloride (30 mg/kg for 20-40 days, or escalating doses up to 144 mg/kg for 40 days) induced focal clearance and reduced microtubule density in rat dendrites.
    • Altered dendrites exhibited swollen mitochondria, micrograined material, membranous inclusions, and myelin-like bodies, often with varicosities.
    • These ultrastructural changes suggest a potential structural basis for impaired neural receptor function.

    Impact:

    • Provides critical ultrastructural evidence linking chronic morphine use to neuronal damage.
    • Highlights potential mechanisms underlying morphine-induced neurological dysfunction.
    • Informs future research on neuroprotective strategies against opioid-induced neurotoxicity.

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