Role of Kynurenine Pathway and Its Metabolites in Depressive Disorders, Major Depressive Disorder is Suspected to Have the Greatest Burden by 2030,Kynurenine Pathway is Major Route Through Which the Essential Amino Acid Tryptophan is Metabolised and Activated in Time of Stress and Immune Activation.

This is a case control study including simple random cases of 90 persons, 45 of them have depressive disorders and the other 45 are healthy individuals,age group between 18-60 years old, cases will be recruited from outpatient psychiatric clinic in sohag university hospital, all cases will be exposed to psychological assessment and also laboratory assessment of kynurenine metabolites by using biokits