Screening method for inherited disorders of purine and pyrimidine metabolism by capillary electrophoresis with reversed electroosmotic flow.
Capillary electrophoresis with electroosmotic flow reversed by cationic surfactant for diagnosis of purine and pyrimidine inherited enzyme deficiencies is reported. Final separation conditions consist of 45 mM borate, 55 mM N-tris[hydroxymethyl]methylglycine, 10 mM tartrate, 1 mM cetyltrimethylammonium bromide and 0.44% tetrabutylammonium hydroxide-2-amino-2-methyl-1,3-propanediol (pH 8.6). Average sensitivity (2.51 microM), reproducibility of migration times (run-to-run C.V. < or = 0.6%, day-to-day C.V. < or = 2.5%), linearity (R2>0.994) and imprecision (mean intra-assay RSD 4.7% and inter-assay RSD 6.6%) of the method are acceptable for diagnostic purposes. Applicability of the method is demonstrated on urine samples from patients with enzymatically proven enzyme deficiencies.
Adam
Tomás
T
Laboratory for Inherited Metabolic Disorders, Department of Clinical Biochemistry, Medical Hospital Olomouc, Czech Republic. tomasadam@email.cz
Lochman
Pavel
P
Friedecký
David
D
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D019075:Electrophoresis, Capillary / Q000379:methods*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008661:Metabolism, Inborn Errors / Q000175:diagnosis* / Q000652:urine; D011687:Purines / Q000652:urine*; D011743:Pyrimidines / Q000652:urine*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D011687:Purines; D011743:Pyrimidines; C030986:pyrimidine; C030985:purine