• Neurosurgery · Feb 1982

    Experimental spinal cord injury: treatment with naloxone.

    • E S Flamm, W Young, H B Demopoulos, V DeCrescito, and J J Tomasula.
    • Neurosurgery. 1982 Feb 1; 10 (2): 227-31.

    AbstractWe studied the effect of the opiate antagonist naloxone on the recovery of cats injured with a 400-g-cm impact injury to T-9. The animals were evaluated by recording somatosensory evoked potentials and performing weekly neurological examinations. Several dose schedules were followed. Six of eight cats that received an intravenous or intraperitoneal bolus of naloxone (10 mg/kg) 45 minutes after injury regained the ability to walk. Recovery occurred in only one of five animals that were treated with an infusion of naloxone, 10 mg/kg/hour, and in none of five animals given 1 mg/kg as a bolus. Because these results are not related to any observed change in blood pressure, we believe that naloxone may be achieving its effect through the preservation of spinal cord blood flow, as well as other mechanisms that have yet to be defined.

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