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Related Experiment Videos

Lipid peroxidation in experimental septic rats.

K Takeda, Y Shimada, T Okada

    Critical Care Medicine
    |August 1, 1986
    PubMed
    Summary

    Sepsis and trauma increase lipid peroxidation in organs, but only sepsis significantly elevates plasma lipid peroxide. Both conditions decrease alpha-tocopherol, impacting oxidative stress markers.

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    Area of Science:

    • Biochemistry
    • Pathophysiology
    • Toxicology

    Background:

    • Critically ill patients with sepsis exhibit elevated lipid peroxide and reduced alpha-tocopherol.
    • Oxidative stress markers are crucial in understanding the pathophysiology of critical illnesses.

    Purpose of the Study:

    • To investigate and compare lipid peroxidation in experimental models of sepsis and severe trauma.
    • To clarify the impact of sepsis and trauma on oxidative stress markers, specifically lipid peroxide and alpha-tocopherol.

    Main Methods:

    • Induction of sepsis and severe trauma in experimental rat models.
    • Measurement of plasma and organ lipid peroxide levels.
    • Assessment of plasma alpha-tocopherol and serum transaminase levels.

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    Main Results:

    • Septic rats showed significant increases in plasma/organ lipid peroxide, decreased platelet count, and reduced plasma alpha-tocopherol.
    • Traumatized rats exhibited transiently decreased platelet count, continuous decrease in plasma alpha-tocopherol, and increased lipid peroxide in lung and kidney, but not plasma.
    • Both sepsis and trauma models showed alterations in serum transaminases.

    Conclusions:

    • While both sepsis and trauma induce organ-specific lipid peroxidation, sepsis uniquely elevates plasma lipid peroxide.
    • Alpha-tocopherol depletion is a common feature in both sepsis and trauma models.
    • These findings highlight differential oxidative stress responses to sepsis and trauma.