Demonstration of inter- and intraspecies differences in serotonin binding sites by antibodies from an autistic child.
Serotonin (5-HT) binding sites from bovine and rat cerebral cortex membranes share pharmacological properties that allow both to be subclassified by the same criteria. We show here that [3H]5-HT binding sites from human cortex also possess pharmacological properties that follow the same subclassification scheme as for bovine and rat cortex. In addition, we show that solubilized 5-HT1 and 5-HT3 sites from all three species have an s20,w value of 3. 4. Despite these similar pharmacological and physical characteristics, we can demonstrate antigenic differences between receptor types and species. Human 5-HT1A sites can be distinguished from human 5-HT1B, 5-HT2, and 5-HT3 sites and from equivalent sites in rat and bovine cortex. The anti-human 5-HT1A antibodies were discovered in the blood of an autistic child and may have clinical or etiologic significance for this disorder.[1]References
- Demonstration of inter- and intraspecies differences in serotonin binding sites by antibodies from an autistic child. Todd, R.D., Ciaranello, R.D. Proc. Natl. Acad. Sci. U.S.A. (1985) [Pubmed]
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