Biochemical and histochemical studies of biogenic amines in spinal cord trauma

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Abstract
Highly sensitive enzymatic assays, microdissection techniques, and histochemical methods were used to investigate the effects of blunt trauma on rabbit spinal cord serotonin, norepinephrine, and dopamine concentrations. Within 5 minutes after trauma, norepinephrine and serotonin in gray matter decreased considerably at the lesion center. In white matter, norepinephrine decreased or was unchanged, but at the lesion edges serotonin increased. No changes in dopamine concentration were detected. Substantial changes in monoamines do occur after spinal cord trauma and serotonin may play a role in injury development.

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