Document Detail


Amniotic fluid analysis in prenatal diagnosis of neural tube defects: a comparison between six biochemical tests supplementary to the measurement of amniotic fluid alpha-fetoprotein.
MedLine Citation:
PMID:  6209039     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Concanavalin A (con A) and lens culinaris agglutinin (LCA) microheterogeneity pattern of AFP (crossed affinity immunoelectrophoresis), alpha-2-macroglobulin and synaptic membrane protein D-2 (rocket immunoelectrophoresis) and qualitative (polyacrylamide gel electrophoresis) and quantitative (enzyme kinetic reaction rate) acetylcholinesterase were analysed in 87 consequtive samples from normal pregnancies and 37 abnormal samples (fetal neural tube defect or abdominal wall defect). Very few false positive results were obtained in normal pregnancies with any of the tests. In all cases of neural tube defects the correct result was obtained with qualitative acetylcholinesterase analysis, whereas only 2/3 of the abdominal wall defects were correctly predicted. Testing with con A or LCA was less optimal in neural tube defects, whereas all abdominal wall defects could be predicted correctly. Acetylcholinesterase in the quantitative test and protein D-2 did not decrease the rate of false results. Determination of the alpha-2-macroglobulin concentration performed well in the present study, but is not recommended because of the very high susceptibility to contamination of amniotic fluid with fetal or maternal blood.
Authors:
K Toftager-Larsen; J Wandrup; B Nørgaard-Pedersen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinical genetics     Volume:  26     ISSN:  0009-9163     ISO Abbreviation:  Clin. Genet.     Publication Date:  1984 Nov 
Date Detail:
Created Date:  1985-01-14     Completed Date:  1985-01-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0253664     Medline TA:  Clin Genet     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  406-13     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Abdominal Muscles / abnormalities*
Abnormalities, Multiple / diagnosis
Acetylcholinesterase / analysis
Female
Humans
Lectins / diagnostic use
Membrane Proteins / analysis
Nerve Tissue Proteins / analysis
Neural Tube Defects / diagnosis*
Pregnancy
Prenatal Diagnosis
Synaptic Membranes / analysis
alpha-Fetoproteins / analysis*
alpha-Macroglobulins / analysis
Chemical
Reg. No./Substance:
0/Lectins; 0/Membrane Proteins; 0/Nerve Tissue Proteins; 0/alpha-Fetoproteins; 0/alpha-Macroglobulins; EC 3.1.1.7/Acetylcholinesterase

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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