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Oxidative hemoglobin breakdown induced by a rubber additive

D Williamson, C C Winterbourn, W H Swallow

    Hemoglobin
    |January 1, 1981
    PubMed
    Summary
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    N-isopropyl-N'-phenyl-p-phenylenediamine (IPPD), an antioxidant in black rubber, rapidly oxidizes hemoglobin, potentially causing red blood cell damage and hemolysis, especially in individuals with glucose-6-phosphate dehydrogenase deficiency.

    Area of Science:

    • Biochemistry
    • Toxicology
    • Hematology

    Background:

    • N-isopropyl-N '-phenyl-p-phenylenediamine (IPPD) is a common antioxidant in black rubber.
    • Oxidative stress is a significant factor in red blood cell damage.

    Purpose of the Study:

    • To investigate the effects of IPPD on hemoglobin and red blood cells.
    • To determine the potential of IPPD to induce hemolysis, particularly in individuals with glucose-6-phosphate dehydrogenase (G6PD) deficiency.

    Main Methods:

    • Incubation of purified hemoglobin and red blood cells with IPPD.
    • Monitoring of hemoglobin oxidation, Heinz body formation, reduced glutathione levels, and hexose monophosphate shunt activity.

    Main Results:

    • IPPD caused rapid oxidation and denaturation of purified hemoglobin.

    Related Experiment Videos

  • In red blood cells, IPPD induced Heinz body formation, decreased reduced glutathione, and stimulated the hexose monophosphate shunt.
  • IPPD demonstrated catalytic activity in oxidizing hemoglobin, making it more potent than phenylhydrazine at low concentrations.

    • Conclusions:

    • IPPD has the potential to induce hemolysis, especially in G6PD-deficient individuals.
    • IPPD's reactivity is similar to phenylhydrazine but its catalytic action makes it more potent.
    • Exposure to IPPD through rubber products or manufacturing poses a risk of hemolysis for susceptible individuals.