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Related Experiment Videos

Brain ultrastructure in Reye's syndrome.

J C Partin, J S Partin, W K Schubert

    Journal of Neuropathology and Experimental Neurology
    |September 1, 1975
    PubMed
    Summary

    Severe Reye's syndrome causes brain cell swelling and mitochondrial damage, but recovery is possible. This study details reversible organelle changes in a child's brain biopsy.

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    Area of Science:

    • Neurology
    • Pathology
    • Cell Biology

    Background:

    • Reye's syndrome is a severe condition affecting children, characterized by encephalopathy and liver damage.
    • Understanding the cerebral organelle pathology is crucial for diagnosing and treating Reye's syndrome.

    Observation:

    • Electron microscopy of cerebral biopsies from a child with severe Reye's syndrome.
    • Biopsies were taken 48 and 72 hours after encephalopathy onset.
    • The child survived and recovered, indicating the observed pathology was reversible.

    Findings:

    • Key ultrastructural changes include astrocyte swelling, partial deglycogenation, and myelin bleb formation.
    • Neurons exhibited universal mitochondrial injury with matrix disruption and moderate swelling.
    • Endoplasmic reticulum dilation and nuclear changes were observed in neurons with severe mitochondrial alterations.

    Implications:

    • The observed brain pathology in Reye's syndrome differs from hepatic encephalopathy and ammonia intoxication.
    • Cerebral mitochondrial ultrastructure uniquely resembles that seen in the liver parenchyma in Reye's syndrome.
    • Findings suggest a specific pattern of reversible organelle injury in the brain during Reye's syndrome.

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