Autistic children and their first-degree relatives: relationships between serotonin and norepinephrine levels and intelligence
- 1 August 1990
- journal article
- Published by American Psychiatric Association Publishing in The Journal of Neuropsychiatry and Clinical Neurosciences
- Vol. 2 (3), 268-274
- https://doi.org/10.1176/jnp.2.3.268
Abstract
Whole-blood serotonin (5-HT) and plasma norepinephrine (NE) were studied in 16 autistic children, 21 siblings of autistic children, and 53 parents of autistic children. Both plasma NE and whole-blood 5-HT were negatively correlated with vocabulary performance. Whole-blood 5-HT and plasma NE did not differ between autistic children with or without histories of self-injurious behavior or decreased pain sensitivity. Eighteen subjects were hyperserotonemic (whole-blood 5-HT greater than 270 ng/ml). For these subjects, plasma NE was significantly higher than for subjects without hyperserotonemia. Seven of 10 families with one hyperserotonemic member had two or more hyperserotonemic members. Observations of familiarity of whole-blood 5-HT suggest that larger-scale and more focused study of whole-blood 5-HT as a possible genetic marker may be productive.Keywords
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