Journal
CLINICAL BIOCHEMISTRY
Volume 43, Issue 6, Pages 581-588Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.clinbiochem.2009.12.009
Keywords
Tandem mass spectrometry; Inborn errors of metabolism; Selective screening; Acylcarnitines; Amino acids
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Funding
- Indian Council for Medical Research (ICMR), New Delhi, India
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Objectives: Tandem mass spectrometry is a major technological advance in the screening for inborn errors of metabolism. It has the advantage of sensitive and simultaneous multiple disease screening with minimal sample requirement. The diseases detected include aminoacidemias, fatty acid oxidation disorders, and organic acidemias. Design and methods: Using automated electrospray tandem mass spectrometry we screened 3550, clinically selected, symptomatic children for inborn errors of metabolism by analyzing amino acids and acylcarnitines in dried blood filter-paper samples. Results: Among these, 113 (3.2%) children were identified with a metabolic disorder: 61(54%) patients had amino acid disorders, 47 (41.6%) had organic acidemias, and 5 (4.4%) children had disorders of fatty acid oxidation. The diagnoses were further confirmed through clinical symptoms, and other biochemical studies. Conclusions: These results show that inherited metabolic disorders are not rare in India, a rapidly developing country with a high birth rate and relatively frequent occurrence of consanguineous marriages. (C) 2009 The Canadian Society of Clinical Chemists. Published by Elsevier Inc. All rights reserved.
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