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Related Experiment Videos

A randomized trial of ascorbic acid in polyposis coli

H J Bussey, J J DeCosse, E E Deschner

    Cancer
    |October 1, 1982
    PubMed
    Summary

    This study investigated ascorbic acid for large bowel adenomas. Ascorbic acid showed a temporary reduction in polyp area, suggesting potential for future chemoprevention strategies in high-risk patients.

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    Area of Science:

    • Gastroenterology
    • Oncology
    • Nutritional Science

    Background:

    • Antioxidants show promise in experimental tumor models.
    • Previous limited studies suggest ascorbic acid may help control large bowel adenomas.

    Purpose of the Study:

    • To test the hypothesis that ascorbic acid can pharmacologically control large bowel adenomas.
    • To evaluate the efficacy of ascorbic acid in patients with polyposis coli.

    Main Methods:

    • A randomized, double-blind, placebo-controlled study.
    • 49 patients with polyposis coli were enrolled over two years.
    • Ascorbic acid (3 g/day) or placebo was administered, with follow-up assessments.

    Main Results:

    • A statistically significant reduction in polyp area was observed in the ascorbic acid group at nine months (P < 0.03).

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  • Trends toward reduced rectal polyp number and area were noted mid-trial.
  • A thymidine labeling study suggested ascorbic acid influenced polyp growth or turnover.

    • Conclusions:

    • Ascorbic acid demonstrated a temporary effect on polyp growth or turnover in patients with polyposis coli.
    • While not currently therapeutic, findings support further research into ascorbic acid chemoprevention.
    • Continued studies are warranted for chemoprevention in high-risk settings.