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Related Experiment Videos

The placenta in leprosy.

M E Duncan, H Fox, R A Harkness

    Placenta
    |May 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Leprosy in pregnant women did not infect the placenta, but it did cause smaller placental size and reduced fetal birth weight. This is likely due to a weakened maternal immune response, not direct infection.

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    Area of Science:

    • Obstetrics and Gynecology
    • Infectious Diseases
    • Immunology

    Background:

    • Leprosy, a chronic infectious disease caused by Mycobacterium leprae, can affect pregnant women.
    • The impact of maternal leprosy on placental development and fetal outcomes requires further investigation.

    Purpose of the Study:

    • To investigate the effects of leprosy on placental morphology, histology, and microbiology.
    • To determine the relationship between maternal leprosy, placental size, and fetal birth weight.

    Main Methods:

    • Macroscopic, light microscopic, ultrastructural, immunopathological, microbiological, and biochemical analyses of placentae from women with leprosy and healthy controls.
    • Detection of Mycobacterium leprae in placental tissues.

    Main Results:

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    • No morphological evidence of direct placental infection by Mycobacterium leprae was found.
    • Placentae from women with leprosy were smaller, particularly in cases of lepromatous leprosy, due to decreased cell size.
    • Homogenates from a small number of placentae with active lepromatous leprosy contained acid-fast bacilli.

    Conclusions:

    • Maternal leprosy does not appear to directly infect the placenta.
    • Reduced placental size and fetal birth weight in leprosy are likely linked to a suppressed maternal immune response rather than direct placental infection.