The content of serotonin cells in duodenal biopsies of autistic patients

The serotonergic profiles of the GI tract of autistic patients and their peers without autistic symptoms are different. In the course of chronic duodenitis in patients with ASD the number of serotonin cells falls while in persons without autistic features it increases significantly. Chronic duodenitis contributes to an increase in the number of serotonin cells in persons without autistic features while decreasing it in patients with ASD.