Abstract
Plasma cyclic AMP is a “second messenger” that may reflect levels of activity of important neurotransmitter receptors. Plasma cyclic AMP was measured in 18 patients with childhood autism, 7 patients with pervasive developmental disorder, and 12 age- and sex-matched healthy controls. Plasma cyclic AMP was significantly elevated by over 100% in both groups of patients with childhood-onset psychoses compared with controls. Plasma cyclic GMP, a nucleotide linked to different receptors, was not elevated, suggesting that the finding may be specific.
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Goldberg, M., Hattab, J., Meir, D. et al. Plasma cyclic AMP and cyclic GMP in childhood-onset psychoses. J Autism Dev Disord 14, 159–164 (1984). https://doi.org/10.1007/BF02409658
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DOI: https://doi.org/10.1007/BF02409658