Altered Arginine/Agmatine Pathway and Polyamines in Adolescents Diagnosed with Major Depressive Disorder

Major depressive disorder (MDD) is common in childhood, but its etiopathogenesis is still unclear. Published neurochemical studies mostly focus on monoaminergic system, however, the pathophysiology of MDD cannot be explained by monoamine hypothesis only, medications that have effect on monoamines cannot have effect needed in all patients. We aimed to investigate the poliamine pathway of L-arginine metabolism which is proceeding by way of agmatine in adolescents with MDD.