title: Plasma amino acid pattern at noon in early treated hyperphenylalaninemic, phenylketonuric, and normal children.
abstract: In 41 hyperphenylalaninemic early treated children (classical phenylketonurics and hyperphenylalaninemic variants) on diet, aged 2 months to 15 years, the plasma amino acid pattern at noon was compared with that in 31 normal age-matched controls. In contrast to previously published results in infants, the mean levels of single amino acids deviated, with the exception of phenylalanine, only slightly from that of normal controls in patients of all five age groups investigated. Constant findings were a tendency towards low mean levels of arginine in younger patients and elevated levels of lysine, serine, and histidine which were found in patients of all age groups.
mesh_terms: D000293:Adolescent; D000375:Aging; D000592:Amino Acid Metabolism, Inborn Errors / Q000097:blood*; D000596:Amino Acids / Q000097:blood*; D002648:Child; D002675:Child, Preschool; D005260:Female; D005973:Glutamine / Q000097:blood; D006801:Humans; D007223:Infant; D008297:Male; D010649:Phenylalanine / Q000097:blood*; D010661:Phenylketonurias / Q000097:blood*; D013997:Time Factors
chemical_list: D000596:Amino Acids; D005973:Glutamine; D010649:Phenylalanine