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Related Experiment Videos

Abnormal heme-protein patterns in hemorrhagic shock.

Z Friedman-Mor, J Chalon, F Gorstein

    The Journal of Trauma
    |February 1, 1978
    PubMed
    Summary

    Toxic heme pigments in shock increase mortality. Their presence, particularly hemopexin-heme and methemalbumin, correlates with higher death rates, suggesting serum protein administration may mitigate toxicity.

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    Area of Science:

    • Biochemistry
    • Pathophysiology
    • Clinical Medicine

    Background:

    • Toxic heme pigments have been implicated in hemorrhagic shock.
    • Intravascular hemolysis yields toxic heme-albumin and heme-hemopexin complexes.
    • Impeded circulation in shock leads to heme pigment accumulation exceeding serum protein capacity.

    Purpose of the Study:

    • To identify abnormal heme pigments in shock serum using electrophoresis.
    • To correlate the presence of specific heme pigments with mortality rates in shock patients.
    • To investigate the potential role of serum proteins in mitigating heme toxicity.

    Main Methods:

    • Scanning spectrophotometry to detect abnormal heme pigments.
    • Serum electrophoresis for pigment identification.

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  • Correlation analysis between pigment presence and patient mortality.

    • Main Results:

    • Haptoglobin-hemoglobin complexes alone were not associated with mortality.
    • Hemopexin-heme and methemalbumin appeared with increasing shock severity and mortality.
    • The highest mortality (4/5) occurred when both hemopexin-heme and methemalbumin were present.

    Conclusions:

    • Abnormal heme pigments, specifically hemopexin-heme and methemalbumin, are associated with increased mortality in shock.
    • Serum protein binding capacity is exceeded in shock, leading to toxic pigment formation.
    • Administration of serum proteins may reduce the toxicity of heme degradation products in low-flow states.