Monoamine and Tissue Fluid Levels in Contused Spinal Cord of Sheep

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Abstract
Methods are described for the determination of sheep spinal cord tissue fluid content and norepinephrine, serotonin and dopamine concentrations after experimental injury. The amount of tissue fluid varied in different regions of sheep spinal cord following injury. Norepinephrine and serotonin wet weight concentrations were corrected for this variation in tissue fluid. Corrected norepinephrine wet weight cord concentrations did not change up to 3 h after injury. Levels of serotonin at 60 min after injury were similar to controls. Dopamine was not detected in sheep spinal cord. .alpha.-Methyl tyrosine significantly reduced fluid in the spinal cord at 75 min after injury.