Disturbances in Metabolism of Phenylalanine and Tyrosine as an Important Factor in the Etiology and Pathogenesis of Psychoneurological Disorders Associated with Liver Diseases

Derangements of phenylalanine and tyrosine metabolism are an important factor in the etiology and pathogenesis of psychoneurological disorders. These disorders are particularly pronounced with monogenic hereditary diseases. In this work, we investigated similar disturbances in widespread and socially significant diseases – viral hepatitis and chronic alcoholism – which are accompanied by liver damage. We found serious derangements in the metabolism of phenylalanine, tyrosine and their derivatives with these diseases and concluded that such derangements make an essential contribution to the development of psychoneurological disorders in the studied pathology. In conclusion, this paper proposes recommendations for correction of such derangements and normalization of the patients’ condition.