TY - JOUR T1 - HEreditary orotic aciduria with normal growth and development AU - Tubergen DG, Krooth RS, Heyn RM Y1 - 1969/12/01 N1 - 10.1001/archpedi.1969.02100040866009 JO - American Journal of Diseases of Children SP - 864 EP - 870 VL - 118 IS - 6 N2 - Hereditary orotic aciduria was found in a 7-year-old girl who had anemia, leukopenia, a megaloblastic bone marrow, crystalluria, and normal growth and intelligence. Uridine produced a rapid hematologic improvement, similar to that seen in the previously reported cases. The 24-hour excretion of urinary orotic acid ranged from 290 mg while the patient was on a dosage of 150 mg/kg/day of uridine, to 650 mg while she was on a dosage of 20 mg/ kg/day. The urinary orotic acid/creatinine ratio varied inversely with the uridine dose. Enzyme studies on hemolysates and cultured fibroblasts from the patient revealed grossly reduced levels of orotidine-5′-monophosphate pyrophosphorylase and decarboxylase. The red blood cell levels of both of these enzymes in the one parent studied were compatible with heterozygosity. SN - 0002-922X M3 - doi: 10.1001/archpedi.1969.02100040866009 UR - http://dx.doi.org/10.1001/archpedi.1969.02100040866009 ER -