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Related Experiment Videos

Uncultured cells in amniotic fluid from normal and abnormal foetuses.

Z Papp, J E Bell

    Clinical Genetics
    |October 1, 1979
    PubMed
    Summary

    Direct analysis of uncultured amniotic fluid cells can rapidly diagnose anencephaly and aid in spina bifida diagnosis by identifying abnormal cell proportions in prenatal screening.

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    Area of Science:

    • Prenatal Diagnostics
    • Cell Biology
    • Developmental Biology

    Background:

    • Amniotic fluid contains fetal cells crucial for prenatal diagnostics.
    • Traditional methods often involve cell culture, which can be time-consuming.
    • Identifying specific cell types and proportions may offer diagnostic insights.

    Purpose of the Study:

    • To evaluate the diagnostic potential of direct smears of uncultured amniotic fluid cells.
    • To correlate cellular morphology and proportions with specific pregnancy abnormalities.
    • To assess the feasibility of rapid prenatal diagnosis using this method.

    Main Methods:

    • Direct smear analysis of uncultured amniotic fluid cells from 41 pregnancies (17-22 weeks gestation).
    • Inclusion of normal, anencephalic, spina bifida, and other abnormal pregnancy cases.
    • Morphological assessment of epithelioid cells, macrophages, and elongated cells.
    • Histological examination of associated tissues for cellular origin.

    Main Results:

    • Normal amniotic fluid showed predominant epithelioid cells.
    • Significantly increased proportions of macrophages and elongated cells were observed in anencephalic pregnancies.
    • Two spina bifida cases also exhibited abnormal cellular proportions.
    • Haemosiderin and lipid material were detected in some macrophages.

    Conclusions:

    • Direct smear analysis of uncultured amniotic fluid cells offers a rapid prenatal diagnostic method.
    • Increased macrophages and elongated cells are potential biomarkers for anencephaly.
    • This technique may assist in the prenatal diagnosis of spina bifida.
    • Cellular origin may involve the amnion and membranes covering neural lesions.

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