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Hereditary dysfibrinogenemia.

T C Bithell

    Clinical Chemistry
    |April 1, 1985
    PubMed
    Summary

    Inherited fibrinogen disorders (dysfibrinogenemias) can cause bleeding or thrombosis. Molecular studies reveal single amino acid changes cause these fibrinogen defects, offering insights into wound healing and clotting.

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    Area of Science:

    • Hematology
    • Molecular Biology
    • Genetics

    Background:

    • Over 100 families have documented inherited qualitative fibrinogen abnormalities (dysfibrinogenemias).
    • While often asymptomatic, dysfibrinogenemias can manifest as bleeding, thrombosis, or impaired wound healing.
    • These molecular defects impact fibrin formation, including fibrinopeptide cleavage, polymerization, and cross-linking.

    Purpose of the Study:

    • To elucidate the molecular pathophysiology of hereditary dysfibrinogenemias.
    • To understand the functional consequences of fibrinogen molecular defects.

    Main Methods:

    • Biochemical analysis of abnormal fibrinogen variants.
    • Identification of single amino acid substitutions responsible for functional defects.

    Main Results:

    • Functional defects in fibrinogen are attributed to specific single amino acid substitutions.
    • Hereditary dysfibrinogenemias represent the first coagulation disorder with elucidated molecular pathophysiology.

    Conclusions:

    • Dysfibrinogenemias provide insights into the molecular basis of coagulation.
    • Understanding these genetic defects has implications for thrombosis and wound healing research.

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