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Related Experiment Videos

Polysorbate 80 and E-Ferol toxicity.

S L Alade, R E Brown, A Paquet

    Pediatrics
    |April 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Intravenous vitamin E (E-Ferol) in premature infants was linked to fatalities. Researchers found polysorbates, not vitamin E, suppressed immune cell responses, indicating a potential cause for infant complications.

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    Area of Science:

    • Neonatal Medicine
    • Immunology
    • Toxicology

    Background:

    • Intravenous vitamin E (E-Ferol) use in low birth weight, premature infants is associated with fatalities.
    • An unusual syndrome has been observed in neonatal intensive care units following E-Ferol administration.

    Purpose of the Study:

    • To investigate the in vitro effects of E-Ferol on human lymphocyte response to phytohemagglutinin (PHA).
    • To identify the specific component within E-Ferol responsible for observed immune suppression.

    Main Methods:

    • In vitro testing of human lymphocytes' response to PHA with E-Ferol, alpha-tocopherol acetate, polysorbate 80, and polysorbate 20.
    • Analysis of T11 lymphocyte percentages concurrently with PHA response.

    Main Results:

    Related Experiment Videos

    • E-Ferol significantly suppressed the PHA response in human lymphocytes, particularly at low PHA doses.
    • Alpha-tocopherol acetate alone did not suppress, and sometimes enhanced, the PHA response.
    • Polysorbate 80 and polysorbate 20, used as E-Ferol carriers, were identified as the suppressive agents, with polysorbate 80 being particularly potent.

    Conclusions:

    • The observed immune suppression associated with E-Ferol is attributed to its polysorbate carriers, not vitamin E itself.
    • Polysorbate-induced suppression of PHA response correlates with a decrease in T11 lymphocytes.
    • Findings suggest a need to re-evaluate the safety and formulation of intravenous vitamin E preparations for vulnerable infant populations.