Pre‐ and postnatal diagnosis of succinic semialdehyde dehydrogenase deficiency using enzyme and metabolite assays
- 31 March 1994
- journal article
- Published by Wiley in Journal of Inherited Metabolic Disease
- Vol. 17 (6) , 732-737
- https://doi.org/10.1007/bf00712016
Abstract
Summary: We Report our cumulative experience for the prenatal diagnosis of succinic semialdehyde dehydrogenase (SSADH) deficiency in seven ‘at‐risk’ pregnancies from four unrelated families. Prenatal diagnosis was performed by determination of 4‐hydroxybutyric acid (4‐HBA) concentration in amniotic fluid using isotope‐dilution gas chromatography‐mass spectrometry in conjunction with assay of SSADH activity in biopsied chorionic villus and/or cultured amniocytes. In three of four pregnancies predicted as affected, confirmation was obtained by demonstration of deficient SSADH activity in fetal tissues. Our results suggest that determination of 4‐HBA concentration in amniotic fluid combined with enzyme determination in cultured or biopsied tissue represents a reliable method for the prenatal diagnosis of SSADH deficiency.Keywords
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