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Neutrophil-dependent decrease in early wound margin strength.

T Jonsson1, H Högström

  • 1Department of Surgery, Lund University, Malmö, Sweden.

Archives of Surgery (Chicago, Ill. : 1960)
|November 1, 1991
PubMed
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Neutrophils significantly reduce early intestinal anastomosis strength. Inhibiting neutrophil serine proteinases partially preserves this strength, indicating their crucial role in wound healing.

Area of Science:

  • Gastroenterology
  • Surgical Research
  • Wound Healing Biology

Background:

  • Intestinal anastomoses are crucial surgical connections.
  • Early wound strength is vital for successful healing.
  • Neutrophils are implicated in inflammatory wound responses.

Purpose of the Study:

  • To investigate the role of neutrophils and their serine proteinases in early intestinal anastomosis strength.
  • To determine if neutropenia or serine proteinase inhibition affects suture-holding capacity.

Main Methods:

  • Rats were rendered neutropenic using antineutrophil serum or treated with a serine proteinase inhibitor (soybean trypsin inhibitor).
  • Control groups received inactivated serum or saline.
  • Anastomotic suture-holding capacity (breaking strength), myeloperoxidase activity, and collagen levels were measured at 0 and 72 hours post-surgery.

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Main Results:

  • Suture-holding capacity decreased by 70% in controls and 35% in inhibitor-treated rats.
  • Neutropenic rats maintained immediate postoperative suture-holding capacity, correlating with low myeloperoxidase activity.
  • Collagen content and solubility remained consistent across all groups.

Conclusions:

  • Early reduction in intestinal anastomosis strength is dependent on neutrophils.
  • Neutrophil serine proteinases are key mediators in the decrease of early wound margin strength.
  • Targeting neutrophil serine proteinases may offer a strategy to improve early anastomotic integrity.