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Related Experiment Videos

[Diagnostic problems in mosaic-Downs-syndrome (author's transl)].

H Zankl, A Rodewald

    Klinische Padiatrie
    |November 1, 1977
    PubMed
    Summary

    Mosaic Down syndrome patients show a strong link between trisomic cell percentage and dermatoglyphic features. Cell line shifts can occur, impacting diagnosis and highlighting the value of dermatoglyphic analysis in mosaic Down syndrome.

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    Area of Science:

    • Genetics
    • Dermatoglyphics
    • Human genetics

    Context:

    • Mosaic Down syndrome presents diagnostic challenges due to cellular heterogeneity.
    • Dermatoglyphics offers a non-invasive method for assessing phenotypic expression.

    Purpose:

    • To investigate the correlation between trisomic cell percentage and dermatoglyphic patterns in mosaic Down syndrome.
    • To evaluate the diagnostic utility of dermatoglyphics in cases with shifting cell lines.

    Summary:

    • A study of 14 mosaic Down syndrome patients revealed a significant correlation between the percentage of trisomic cells and the severity of dermatoglyphic features.
    • Chromosome analysis in 11 patients showed dynamic shifts between normal and trisomic cell lines, with some cases experiencing complete loss of a cell line.
    • These findings underscore the diagnostic difficulties arising from cell line loss and emphasize the value of dermatoglyphic examination.

    Impact:

    • Dermatoglyphic analysis can aid in diagnosing and monitoring mosaic Down syndrome, especially when cytogenetic results are ambiguous.
    • Understanding cell line dynamics is crucial for accurate diagnosis and management of mosaic Down syndrome.
    • This research highlights the complementary role of dermatoglyphics in genetic diagnostics.

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