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Abstract
Prenatal diagnoses of peroxisomal disorders, including peroxisome-deficient Zellweger
syndrome, isolated deficiency of peroxisomal β-oxidation enzyme and rhizomelic type
chondrodysplasia punctata were investigated by means of the lignoceric acid oxidation
assay, indirect immunofluorescence staining and pulse-chase experiments, using cultured
amniocytes. Assessment of peroxisomal β-oxidation activity by means of [1-14C]lignoceric acid oxidation is essential for the diagnosis of a single enzyme deficiency
of peroxisomal β-oxidation with detectable enzyme protein. For the diagnosis of Zellweger
syndrome, the absence of peroxisomes was readily determined by immunofluorescence
staining of only a few aminocytes. Evidence for abnormal processing of 3-ketoacyl-CoA
thiolase leads to the diagnosis of rhizomelic chondrodysplasia punctata. All the fetuses
were considered to be normal and the neonates were normal. Use of these methods requires
only a small number of amniocytes and will facilitate the prenatal diagnosis of peroxisomal
disorders.
Keywords
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Article info
Publication history
Accepted:
August 25,
1993
Received:
April 4,
1993
Identification
Copyright
© 1994 Elsevier Science B.V. All rights reserved. Published by Elsevier Inc.