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Articles |
Adam1,3,a
2
ev
ík2,3
1
Laboratory for Inherited Metabolic Disorders, Department of Clinical Biochemistry, Medical Hospital, I. P. Pavlova 6, 775 20 Olomouc, Czech Republic.
2
Department of Analytical Chemistry, Palack
University, T
ída Svobody 8, 772 00 Olomouc, Czech
Republic.
3
Laboratory of Bioanalytical Research, Palack
University, T
ída Svobody 8, 771 26 Olomouc, Czech
Republic.
4
Purine Research Laboratory, Guys and St. Thomass
Medical and Dental School, London Bridge, London SE1 9RT, UK.
a Address correspondence to this author at: Laboratory for Inherited Metabolic Disorders, Medical Hospital, I. P. Pavlova 6, 775 20 Olomouc, Czech Republic. Fax 420-68-5416555; e-mail tomasadam{at}email.cz
Background: Measurement of purine and pyrimidine metabolites presents complex problems for separations currently performed by HPLC and thin-layer chromatography in clinical practice. We developed a novel capillary electrophoresis method for this purpose.
Methods: Separations were performed in 60 mmol/L borate-2-amino-2-methyl-1-propanol-80 mmol/L sodium dodecyl sulfate (pH 9.6) at 35 °C.
Results: The conditions reported allowed separation of all diagnostic metabolites from major urinary constituents in an analysis time of 3 min and with a separation efficiency of 220 000 theoretical plates/m. The clinically important metabolites were detectable at concentrations of 0.854.28 µmol/L. The method was linear over the range 5500 µmol/L (r >0.99). The within-run and intra- and interday imprecision (CV) was <5%. Characteristic abnormalities were detected in the electropherograms of urine samples from patients with purine and pyrimidine enzyme deficiencies. We provide the electrophoretic and spectral characteristics of many intermediates in purine and pyrimidine metabolism and describe common artifacts from medication and ultraviolet-absorbing compounds.
Conclusion: Capillary electrophoresis is a valuable screening tool in the detection of inborn errors of purine and pyrimidine metabolism.
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F. Carlucci, A. Tabucchi, A. Aiuti, F. Rosi, F. Floccari, R. Pagani, and E. Marinello Capillary Electrophoresis in Diagnosis and Monitoring of Adenosine Deaminase Deficiency Clin. Chem., November 1, 2003; 49(11): 1830 - 1838. [Abstract] [Full Text] [PDF] |
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T. Ito, A. B.P. van Kuilenburg, A. H. Bootsma, A. J. Haasnoot, A. van Cruchten, Y. Wada, and A. H. van Gennip Rapid Screening of High-Risk Patients for Disorders of Purine and Pyrimidine Metabolism Using HPLC-Electrospray Tandem Mass Spectrometry of Liquid Urine or Urine-soaked Filter Paper Strips Clin. Chem., April 1, 2000; 46(4): 445 - 452. [Abstract] [Full Text] [PDF] |
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