Keywords: 5-HT; 5-hydroxytryptamine; 5-HTT; 5-hydroxytryptamine transporter; AC; adenylyl cyclase; AD; Alzheimer's disease; Akt; protein kinase B; AMPAR; α-amino-3-hydroxy-5-mthhyl-4-isoxazolepropionic acid receptor; apCAM; Aplysia cell adhesion molecules; ASD;