期刊
ARCHIVES OF DISEASE IN CHILDHOOD
卷 92, 期 8, 页码 687-689出版社
B M J PUBLISHING GROUP
DOI: 10.1136/adc.2006.103192
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Background: Pyridoxine-dependent seizures (PDS) is a rare, autosomal recessively inherited disorder. Recently alpha-aminoadipic semialdehyde (alpha-AASA) dehydrogenase deficiency was identified as a major cause of PDS, which causes accumulation of both alpha-AASA and pipecolic acid (PA) in body fluids. Methods: We studied urinary and plasma alpha-AASA and PA levels in 12 Dutch clinically diagnosed patients with PDS. Results: alpha-AASA was elevated in both urine and plasma in 10 patients. In these patients plasma PA levels were also elevated but urinary PA levels were normal. Discussion: In all patients with clinically definite PDS, and in most patients with probable or possible PDS, the clinical diagnosis of PDS could be confirmed at the metabolite level. Non-invasive urinary screening for alpha-AASA accumulation provides a reliable tool to diagnose PDS and can save these patients from the classical and potentially dangerous pyridoxine withdrawal test to prove PDS.
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