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Identification of a xanthinuria type I case with mutations of xanthine dehydrogenase in an Afghan child


Nakamura, Makiko; Yuichiro, Yamaguchi; Sass, Jörn Oliver; Tomohiro, Matsumura; Schwab, Karl Otfried; Takeshi, Nishino; Tatsuo, Hosoya; Ichida, Kimiyoshi (2012). Identification of a xanthinuria type I case with mutations of xanthine dehydrogenase in an Afghan child. Clinica Chimica Acta, 414C:158-160.

Abstract

Xanthinuria due to xanthine dehydrogenase (XDH) deficiency is a rare genetic disorder characterized by hypouricemia and the accumulation of xanthine in the urine. We have identified an Afghan girl whose xanthinuria could be classified as type I xanthinuria based on an allopurinol loading test. Three mutations were identified in the XDH gene, 141insG, C2729T (T910M) and C3886T (R1296W). Site-directed mutagenesis followed by expression analysis in Escherichia coli revealed that not only the frame shift mutation 141insG impairs XDH activity, but also the missense mutation C2729T, while C3886T resulted in major residual activity of about 50% of the wild type. In this report, a case of xanthinuria type I with mutations of XDH was identified and characterized by expression studies.

Abstract

Xanthinuria due to xanthine dehydrogenase (XDH) deficiency is a rare genetic disorder characterized by hypouricemia and the accumulation of xanthine in the urine. We have identified an Afghan girl whose xanthinuria could be classified as type I xanthinuria based on an allopurinol loading test. Three mutations were identified in the XDH gene, 141insG, C2729T (T910M) and C3886T (R1296W). Site-directed mutagenesis followed by expression analysis in Escherichia coli revealed that not only the frame shift mutation 141insG impairs XDH activity, but also the missense mutation C2729T, while C3886T resulted in major residual activity of about 50% of the wild type. In this report, a case of xanthinuria type I with mutations of XDH was identified and characterized by expression studies.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Children's Hospital Zurich > Medical Clinic
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2012
Deposited On:16 Nov 2012 09:58
Last Modified:05 Apr 2016 16:05
Publisher:Elsevier
ISSN:0009-8981
Publisher DOI:https://doi.org/10.1016/j.cca.2012.08.011
PubMed ID:22981351

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