Abstract
Rabbit spinal cords were subjected to 10 to 40 minutes of ischemia with and without 4 days of recirculation and L-4 segment was analyzed for adenylates and ATP-induced bioluminiscence. ATP level and energy charge was progressively reduced by increasing durations of ischemia. Regional evaluation of ATP-induced bioluminiscence after 10 and 20 minutes of ischemia revealed ATP depletion mainly in the gray matter of spinal cord. Forty minutes of ischemia resulted in complete reduction of ATP bioluminiscence in both gray and white matter. Within 4 days of recirculation following all periods of ischemia studied, only partial metabolic recovery occurred. Restitution of ATP-induced bioluminiscence was regionally heterogeneous, reduced predominantly in the anterior horns of gray matter.
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