Abstract | OBJECTIVES: METHODS: We developed a fast method to measure sepiapterin and creatinine simultaneously using high-performance liquid chromatography with fluorescence and ultraviolet detection. Urine sepiapterin and creatinine were measured in three SRD patients, two SRD carriers, four SRD siblings, and 103 non-SRD patients. RESULTS: In the three SRD cases, concentrations of urine sepiapterin were 1086, 914, and 575 µmol/mol creatinine (upper limit: 101.7 µmol/mol creatinine), and were markedly higher than those in other groups. CSF sepiapterin concentration was also measured in one SRD case and it was 4.1 nmol/L (upper limit: 0.5 nmol/L). CONCLUSIONS: The simultaneous determination of urine sepiapterin and creatinine appears helpful for the diagnosis of SRD. This assay system can also be used to measure sepiapterin in the CSF.
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Authors | Yuki Hyodo, Tomoyuki Akiyama, Tetsuhiro Fukuyama, Masakazu Mimaki, Keiko Watanabe, Tadayuki Kumagai, Katsuhiro Kobayashi |
Journal | Clinica chimica acta; international journal of clinical chemistry
(Clin Chim Acta)
Vol. 534
Pg. 167-172
(Sep 01 2022)
ISSN: 1873-3492 [Electronic] Netherlands |
PMID | 35926683
(Publication Type: Journal Article)
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Copyright | Copyright © 2022 Elsevier B.V. All rights reserved. |
Chemical References |
- Pterins
- Creatinine
- sepiapterin
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Topics |
- Creatinine
- Dystonia
(diagnosis)
- Humans
- Infant, Newborn
- Metabolism, Inborn Errors
- Psychomotor Disorders
- Pterins
(metabolism)
|