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Related Experiment Videos

IgD and the fetal immune response

L L Cederqvist, L C Ewool, S D Litwin

    Scandinavian Journal of Immunology
    |January 1, 1977
    PubMed
    Summary

    High levels of Immunoglobulin D (IgD) were found in 84% of newborn blood samples, suggesting a developmental role rather than antibody production. This finding contrasts with previous research on fetal immunoglobulin D.

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    Area of Science:

    • Immunology
    • Neonatal Research
    • Immunoglobulin Studies

    Background:

    • Previous studies reported low incidences of Immunoglobulin D (IgD) in cord sera.
    • The origin and function of fetal IgD remain incompletely understood.

    Purpose of the Study:

    • To investigate the incidence and potential origin of Immunoglobulin D (IgD) in term cord blood.
    • To explore the relationship between fetal IgD and other immunoglobulin classes (IgA, IgM).

    Main Methods:

    • Detection of IgD in 84% of term cord sera using an inhibition-of-hemagglutination test.
    • Comparison of cord blood IgD levels with maternal serum IgD.
    • Correlation analysis between cord blood IgD, IgA, and IgM levels.

    Main Results:

    • A high incidence (84%) of IgD was detected in term cord sera, contradicting earlier reports.
    • Cord blood IgD levels were independent of maternal serum IgD, supporting a fetal origin.
    • No correlation was observed between cord blood IgD and IgA or IgM, suggesting a non-antibody related function.

    Conclusions:

    • The high prevalence of IgD in cord blood suggests it is of fetal origin.
    • Fetal IgD's lack of correlation with other immunoglobulins indicates a developmental role, not specific antibody synthesis.

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