
Keywords: FFAs; free fatty acids; GDS; gut-derived serotonin; 5-HT; serotonin, 5-hydroxytryptamine; Htr; 5-hydroxytryptamine (serotonin) receptor; Tph1; tryptophan hydroxylase 1; Peripheral serotonin; Pancreatic β cell; Hepatocyte; Adipocyte; Diabetes;