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Myelopathy induced by lactic acid.

J D Balentine, W B Greene

    Acta Neuropathologica
    |January 1, 1987
    PubMed
    Summary

    Applying lactic acid to rat spinal cords caused severe myelopathy, damaging blood vessels and nerve fibers. Further research is needed to understand the exact mechanisms behind these acid-induced spinal cord injuries.

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    Area of Science:

    • Neuroscience
    • Pathology
    • Toxicology

    Background:

    • Myelopathy, a condition affecting the spinal cord, can result from various injuries.
    • Understanding the mechanisms of spinal cord injury is crucial for developing effective treatments.

    Purpose of the Study:

    • To define conditions that provoke myelopathic changes using lactic acid in a rat model.
    • To investigate the early pathological effects of lactic acid on the spinal cord.

    Main Methods:

    • Surgically exposed spinal cords of adult male rats were treated with lactic acid (pH 1.8).
    • Histopathological examination was performed at various time points post-application.

    Main Results:

    • Severe necrotizing myelopathy was observed within 24 hours, primarily in the posterior spinal cord.
    • Early necrosis of small blood vessel walls occurred within 30 minutes to 2 hours.
    • Nerve fiber alterations, including axonal stasis and calcification, were identified.

    Conclusions:

    • Lactic acid application can induce severe myelopathy in rats, affecting both vascular and neural tissues.
    • The pathogenesis involves early vascular damage and subsequent nerve fiber alterations.
    • Further studies are required to elucidate the precise mechanisms of acid-induced myelopathy, considering vascular events and calcium metabolism alterations.

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