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Routine gas chromatographic/mass spectrometric analysis of urinary organic acids. Results over a three-year period
Abstract
Organic acidaemias are an important part of inborn errors of metabolism. The biochemical diagnosis is based on gas chromatographic/mass spectrometric identification of urinary organic acids. Since 1973 we have used gas chromatographic analysis of the methyl esters of urinary organic acids. Mass spectral identification was performed only when an abnormal gas chromatographic profile was suspected. In 1983 we introduced routine gas chromatographic/mass spectrometric analysis organic acids. More than 1500 urine samples from 1000 children have been analysed and we encountered more than 40 abnormal profiles: 18 classical organic acidaemias (propionic, methylmalonic, isovaleric, glutaric type I and 3-hydroxy-3-methyl glutaric acidaemias); 6 aminoacidopathies with excretion of branched chain keto acids (leucinosis) or succinylacetone (tyrosinosis type I); 14 massive dicarboxylic acidurias with excretion of suberyl and hexanoyl glycine and deficiency of the medium chain acyl CoA dehydrogenase in four patients. The use of gas chromatography/mass spectrometry routinely allows the identification of abnormal metabolites excreted in small amounts: beta-methyl-crotonyl glycine indicative of biotin deficiency: gamma-hydroxybutyric acid; and 3-methyl-glutaconic + 3-methy-glutaric acid is in a 3-methyl-glutaconic aciduria type II. Abnormal profiles due to metabolites of drugs as valproate, salicylate and barbiturate can be recognized immediately. This simple gas chromatographic/mas spectrometr…
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“Variation in SA levels existed between animals, which is consistent with the finding that SA levels in HT1 patients can vary considerably (8, 39).”
From Point mutations in the murine fumarylacetoacetate hydrolase gene: Animal models for the human genetic disorder hereditary tyrosinemia type 1 (2001) · cites this paper as [39]
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Cited by
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Aponte, J. L., Sega, G. A., Hauser, L. J., Dhar, M. S., Withrow, C. M., Carpenter, D. A., Rinchik, E. M., Culiat, C. T., & Johnson, D. K. (2001) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.98.2.641 · Cited by 68
Metadata
- Authors
- Divry, P., Vianey-Liaud, C., & Cotte, J.
- Affiliations
- Hôpital Debrousse (FR)
- Venue
- Biological Mass Spectrometry
- Publisher
- Wiley
- Published
- 1987-11
- Volume
- 14
- Issue
- 11
- Pages
- 663-668
- ISSN
- 1076-5174 (ISSN-L)
- 0887-6134
- 1096-9888
- OpenAlex
- W2001051038
- Cited by
- 28
- References
- 0
- Citations by year
- 2019: 1 · 2015: 2
- FWCI
- 1.42
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Mass Spectrometry (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolomics and Mass Spectrometry Studies
- Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Toxicology › Forensic Toxicology and Drug Analysis
- Keywords
- urinary organic acids, inborn errors of metabolism, gas chromatography-mass spectrometry, methyl esters, propionic acidemia, methylmalonic acidemia, isovaleric acidemia, glutaric aciduria type I, amino acid metabolism disorders, succinylacetone, dicarboxylic aciduria, medium-chain acyl-CoA dehydrogenase deficiency, biotin deficiency, drug metabolites, valproic acid, salicylates, barbiturates, children
- MeSH terms
- Carboxylic Acids, Esters, Humans, Gas Chromatography-Mass Spectrometry, Methylation, Reference Values
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