Abstract
A previous report suggested that plasma dopamine-beta-hydroxylase (DBH) is elevated in childhood autism. We measured plasma DBH in 15 Children with functional psychosis and in 10 psychotic children with known organic etiology. DBH activity was significantly elevated in the children with functional psychoses and showed a significant correlation with age that is not reported for this age range in normals. It is possible that children with functional psychoses show an abnormal continuation of the rise in plasma DBH activity characteristic of infancy. No differences between children with functional psychoses and children with organic psychoses were found for red blood cell catechol-O-methyl-transferase, plasma monoamine oxidase, or plasma cyclic AMP.
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