THE DISTURBANCE OF METABOLISM OF THE AMINO ACIDS AS A CAUSATIVE FOR THE MENTAL RETARDATION-PHENYLKETONURIA
Journal Title: Journal of Special Education and Rehabilitation - Year 2000, Vol 3, Issue 3
Abstract
PKU is the rare single-gene disease belonging to disturbance of metabolism of the amino acids, which in its own basics halved the mutated gene, whose leaning at the 12-chromosome charge for the synthesis of phenylalanine hydroxylase, turning on phenylalanine into tyrosine. Enzyme block usually leads to the accumulation of a toxic substrate and/or the deficient synthesis of a product needed for normal body function. In PKU there is a toxic accumulation of phenylalanine behind the deficient enzime, phenylalanine hydr?xylase. The symptoms are: lighten hare, blue eyes, lithe pigmented skin, convulsion, mental retardation, low level of adrenalin caused for the lack of tyrosine, the urine have a specific smell of rats or gab. Inheritance of disease become in autosomal recessive way which always become possibility to stay hidden in the family and to inherit from knee to knee without manifestation of its own phenotype. The only therapy that successfully avoids the causes of this disease is phenylalanin-restricted diet. Today we have some affords for improvement of gene therapy, which can help us for determination to these disease. The success of the therapy depends from timing of the right detection also diagnostics all trough equivalent therapy which can successfully interrupt the new forms of mental retardation and other symptoms.
Authors and Affiliations
Jasmina IVANOVSKA
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