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Related Experiment Videos

Simple, sensitive method for measuring plasmin and plasminogen activity in plasma.

T Uete, N Shimano, M Morikawa

    Clinical Chemistry
    |October 1, 1975
    PubMed
    Summary
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    This study presents a fast and simple assay for measuring plasmin and plasminogen in plasma using fibrinogen. The method quantizes tyrosine release, offering a sensitive tool for clinical diagnostics.

    Area of Science:

    • Biochemistry
    • Clinical Chemistry
    • Hematology

    Background:

    • Plasmin and plasminogen are key components of the fibrinolytic system.
    • Accurate measurement of plasmin and plasminogen is crucial for diagnosing and managing bleeding or thrombotic disorders.

    Purpose of the Study:

    • To develop a sensitive, simple, and rapid assay for quantifying plasmin and plasminogen activity in plasma.
    • To validate the assay for potential use in routine clinical settings.

    Main Methods:

    • The assay utilizes fibrinogen as a substrate to measure plasmin and plasminogen activity.
    • Plasma samples are incubated with streptokinase, followed by the addition of fibrinogen.
    • Tyrosine liberation from fibrinogen is measured spectrophotometrically to determine enzyme activity.

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    Main Results:

    • The assay provides a sensitive measurement of plasmin and plasminogen within one hour.
    • The method involves simple plasma dilution and incubation steps.
    • Quantification of liberated tyrosine directly correlates with enzyme activity.

    Conclusions:

    • The described method is a sensitive, simple, and rapid assay for plasmin and plasminogen measurement.
    • The assay's speed and simplicity make it suitable for routine clinical laboratory work.
    • Consistency in fibrinogen substrate is recommended for reliable routine application.