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Related Experiment Videos

Cytoprotective agents in experimental small bowel volvulus.

C D Goldman, M A Rudloff, J L Ternberg

    Journal of Pediatric Surgery
    |March 1, 1987
    PubMed
    Summary

    Prostaglandin E1 significantly reduced mortality in a rat model of bowel strangulation. This cytoprotective effect occurred independently of its impact on blood flow or clotting, highlighting its potential in treating such conditions.

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    Area of Science:

    • Gastroenterology
    • Surgical Research
    • Pharmacology

    Background:

    • Midgut volvulus can lead to small bowel strangulation obstruction.
    • High mortality rates are associated with the release of strangulation obstruction.
    • Cytoprotective agents are being investigated to improve outcomes.

    Purpose of the Study:

    • To evaluate the efficacy of cytoprotective agents in reducing mortality after releasing small bowel strangulation obstruction.
    • To determine if prostaglandin E1 (PGE1) or ibuprofen offer cytoprotection during bowel reperfusion.

    Main Methods:

    • An established rat model of midgut volvulus was used to induce 48-hour small bowel strangulation obstruction.
    • Perioperative mortality was assessed after volvulus release in control and treatment groups.
    • Treatment groups received superoxide dismutase, ibuprofen, or prostaglandin E1 (PGE1).
    • Additional groups received ephedrine, indomethacin, or aspirin to investigate mechanisms.

    Main Results:

    • Release of volvulus resulted in a 93% perioperative mortality rate.
    • Prostaglandin E1 (PGE1) treatment reduced mortality to 11%, while ibuprofen reduced it to 50%.
    • Superoxide dismutase showed minimal benefit (89% mortality).
    • Bowel infarction was the primary cause of death, followed by sepsis or circulatory collapse.
    • Agents targeting PGE1's vascular or antiplatelet effects did not alter mortality.

    Conclusions:

    • Prostaglandin E1 (PGE1) and ibuprofen demonstrate significant cytoprotective effects in a rat model of bowel strangulation.
    • These beneficial effects appear independent of prostaglandin E1's influence on splanchnic vasculature and platelet aggregation.
    • PGE1 and ibuprofen show promise for improving outcomes in patients with compromised bowel due to volvulus.

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