Discriminant analysis for assessing the value of amniotic fluid microvillar enzymes in the prenatal diagnosis of cystic fibrosis

Mária Szabó, Ákos Münnich, Farkas Teichmann, Mariann Huszka, Lajos Veress, Zoltán Papp

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Abstract

We have analysed the sensitivity, specificity, and reliability of biochemical diagnosis based on microvillar membrane enzyme assay and using discriminant analysis in amniotic fluid samples obtained from 54 pregnancies at high risk for cystic fibrosis and 125 normal pregnancies. Our results show that amniotic fluid trehalase, alkaline phosphatase, alkaline phosphatase isoenzymes and gamma‐glutamyltransferase enzyme activities measured during 16–20 gestational weeks, in spite of their non‐specificity for cystic fibrosis, have a very good predictive value for fetal cystic fibrosis or exclude the possibility of the disease. Overall enzyme activity analysis provided over 90 per cent reliability of the method.

Original languageEnglish
Pages (from-to)761-769
Number of pages9
JournalPrenatal Diagnosis
Volume10
Issue number12
DOIs
Publication statusPublished - Dec 1990

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Keywords

  • Alkaline phosphatase
  • Amniotic fluid
  • Cystic fibrosis
  • Discriminant analysis
  • Microvillar enzymes
  • Prenatal diagnosis
  • Trehalase

ASJC Scopus subject areas

  • Obstetrics and Gynaecology
  • Genetics(clinical)

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