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Intestinal ischemia: morphological features--II.

S Santacroce1, G Nicolardi, E Sinigaglia

  • 1Istituto di I Patologia Speciale Chirurgica, Università degli Studi di Bari.

Bollettino Della Societa Italiana Di Biologia Sperimentale
|August 1, 1990
PubMed
Summary
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Acute intestinal ischemia increases peroxidase-catalase activity in the ileal wall, likely due to polymorphonuclear cell degranulation. This highlights the role of oxidative stress in ischemic injury.

Area of Science:

  • Biochemistry
  • Gastroenterology
  • Pathology

Background:

  • Acute intestinal ischemia generates superoxide radicals and hydrogen peroxide.
  • Oxidative stress plays a significant role in tissue damage during ischemia.

Purpose of the Study:

  • To investigate the distribution of peroxidase-catalase activity in the ischemic ileal wall.
  • To understand the biochemical response to intestinal ischemia.

Main Methods:

  • Histochemical determination of peroxidase-catalase activity.
  • Induction of acute intestinal ischemia via arterial and venous occlusion in rats.

Main Results:

  • A progressive increase in extra-vascular peroxidase-catalase activity was observed in the ischemic ileal wall.

Related Experiment Videos

  • Maximum activity correlated with the extent of ileal wall ischemia.

    • Conclusions:

    • Peroxidase-catalase activity in the ileal wall is elevated during acute ischemia.
    • This activity is likely associated with the degranulation of polymorphonuclear leukocytes in response to oxidative stress.