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Related Experiment Videos

Cell-mediated damage to helminths.

A E Butterworth

    Advances in Parasitology
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Helminth infections trigger unique immune responses, primarily involving high immunoglobulin E (IgE) and activated eosinophils. This eosinophil/IgE/mast cell axis is a key defense mechanism against these large parasites.

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    Area of Science:

    • Immunology
    • Parasitology
    • Cellular Biology

    Background:

    • Pathogenic helminths possess large, non-phagocytosable surfaces, evading common host defense mechanisms like cytotoxic lymphocytes.
    • Helminth infections are characterized by distinct immune profiles, including elevated immunoglobulin E (IgE) and increased circulating eosinophils.

    Purpose of the Study:

    • To review and summarize the primary host defense mechanisms against helminth infections.
    • To elucidate the roles of various immune cells and molecules in combating helminths.

    Main Methods:

    • Review of existing literature on helminth immunology and host-parasite interactions.
    • Analysis of in vitro and in vivo studies investigating immune effector mechanisms against helminths.

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    Main Results:

    • The eosinophil/IgE/mast cell axis is identified as a potent defense against helminths, with activated eosinophils demonstrating significant killing capacity.
    • IgE can also mediate macrophage-dependent helminth killing, and other cells like neutrophils and macrophages contribute to defense.
    • Susceptibility of different helminth stages and types (e.g., trematodes, nematodes) varies with specific immune effector mechanisms.

    Conclusions:

    • The immune response to helminths relies on specialized mechanisms, particularly those involving eosinophils, IgE, and mast cells.
    • While eosinophils are central, neutrophils and macrophages also play crucial roles in helminth eradication.
    • Understanding these effector mechanisms is vital for developing effective treatments for helminth infections.