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Thiobarbituric acid reactive material in uremic blood

H Fillit, E Elion, J Sullivan

    Nephron
    |January 1, 1981
    PubMed
    Summary

    Uremic blood contains significant thiobarbituric acid (TBA)-reactive material, which correlates with kidney failure severity. This material is reduced by hemodialysis, indicating its link to chronic renal failure.

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    Area of Science:

    • Biochemistry
    • Nephrology
    • Clinical Chemistry

    Background:

    • Uremia is associated with various metabolic derangements.
    • Oxidative stress markers are increasingly recognized in chronic kidney disease.
    • The thiobarbituric acid (TBA) assay is a common method for detecting lipid peroxidation products.

    Purpose of the Study:

    • To investigate the presence and characteristics of TBA-reactive material in uremic blood.
    • To determine the relationship between TBA-reactive material and the degree of renal failure.
    • To assess the effect of hemodialysis on TBA-reactive material levels.

    Main Methods:

    • Application of the thiobarbituric acid (TBA) assay to blood samples from patients with chronic renal failure and normal controls.
    • Correlation analysis between TBA-reactive material levels and indicators of renal failure.
    • Evaluation of TBA-reactive material levels before and after hemodialysis.
    • Exclusion of 2-deoxyribose, sialic acid, and prostaglandin synthesis as sources of the reactive material.

    Main Results:

    • Significantly elevated levels of TBA-reactive material were detected in the blood of patients with chronic renal failure compared to healthy individuals.
    • The concentration of TBA-reactive material showed a positive correlation with the severity of renal failure.
    • Hemodialysis effectively reduced the levels of TBA-reactive material in uremic patients.
    • The reactive material was identified as not being 2-deoxyribose or sialic acid.
    • Aspirin ingestion did not abolish the presence of TBA-reactive material, suggesting it is unrelated to active prostaglandin synthesis.

    Conclusions:

    • Patients with chronic renal failure exhibit increased levels of TBA-reactive material in their blood.
    • TBA-reactive material levels are indicative of the degree of renal impairment.
    • Hemodialysis is an effective method for clearing TBA-reactive material from uremic blood.
    • The origin of this material in uremia warrants further investigation, as it is distinct from known metabolites and prostaglandin synthesis.

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