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[Factor XII (HAGEMAN FACTOR)]

F Kase, P Klír, J Pospísil

    Folia Haematologica (Leipzig, Germany : 1928)
    |January 1, 1978
    PubMed
    Summary

    Factor XII (Hageman factor) plays a crucial role in blood clotting, fibrinolysis, and kinin release. Its complex interactions with multiple systems highlight its importance in hemostasis and inflammation.

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    Area of Science:

    • Biochemistry
    • Hematology
    • Molecular Biology

    Context:

    • Factor XII (Hageman factor) is a key initiator of the intrinsic coagulation pathway.
    • Its discovery and characterization have evolved significantly with advances in molecular biology.
    • Understanding Factor XII's structure and function is crucial for comprehending hemostasis and related disorders.

    Purpose:

    • To survey the discovery and characterization of Factor XII.
    • To discuss recent molecular insights into Factor XII's structure and composition.
    • To elucidate the diverse roles of Factor XII in various physiological systems.

    Summary:

    • Factor XII activation by various substances, involving pre-kallikrein (Fletcher factor) and high-molecular-weight kininogen (Fitzgerald factor), initiates downstream effects.
    • It influences blood clotting, fibrinolysis, kinin liberation, complement activation, and platelet aggregation.
    • The study emphasizes the interconnectedness of these systems and the need for a holistic approach to understanding Factor XII's functions.

    Impact:

    • Provides a comprehensive overview of Factor XII's multifaceted roles in hemostasis and inflammation.
    • Highlights the clinical relevance of Factor XII deficiency, including implications for bleeding tendencies.
    • Underscores the intricate relationships between coagulation, fibrinolysis, kinin, and complement systems, mediated by Factor XII.

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