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Related Experiment Videos

Specific inactivation of the fourth complement component. II. In vitro studies.

M C Garces, J A Jensen, E Iglesias

    Infection and Immunity
    |October 1, 1971
    PubMed
    Summary

    Researchers used a nurse shark serum inactivator to remove the fourth complement component (C4) from mammalian sera. This allowed for the study of complement component C1 and the measurement of C4 activity in various species.

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    Area of Science:

    • Immunology
    • Biochemistry

    Background:

    • The complement system is crucial for innate immunity.
    • The fourth complement component (C4) plays a key role in complement activation.
    • Studying complement components requires specific methods to isolate or inactivate individual components.

    Purpose of the Study:

    • To develop a method for inactivating C4 in mammalian sera using a nurse shark serum inactivator.
    • To utilize C4-inactivated sera as a source of C1 for further complement studies.
    • To establish a homologous system for measuring C4 activity in various mammalian species.

    Main Methods:

    • Inactivation of C4 in fresh mammalian sera using a nurse shark serum inactivator.
    • Preparation of hemolytically inactive sera retaining eight complement components.

    Related Experiment Videos

  • Generation of sensitized sheep erythrocytes (EA)-C1 using C4-inactivated sera as a C1 source.
  • Measurement of C4 activity using EA-C1 or EA in fresh, normal sera from guinea pigs, humans, dogs, and pigs.

    • Main Results:

    • Successfully inactivated C4 in sera from multiple mammalian species.
    • Demonstrated the utility of C4-inactivated sera as a source for C1.
    • Established a homologous assay system for quantifying C4 activity.

    Conclusions:

    • Nurse shark serum inactivator is effective for C4 depletion in mammalian sera.
    • C4-inactivated sera serve as a valuable reagent for complement research.
    • The developed method facilitates homologous measurement of C4 activity across species.