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Related Experiment Videos

Surgery induces human mononuclear cell arginase I expression.

B J Tsuei1, A C Bernard, M D Shane

  • 1Department of Surgery, Vascular and Trauma/Critical Care Research Program, University of Kentucky College of Medicine, 800 Rose Street, Lexington, KY 40536, USA. btsue@pop.uky.edu

The Journal of Trauma
|September 6, 2001
PubMed
Summary
This summary is machine-generated.

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Surgical trauma increases arginase activity in immune cells, potentially causing postsurgical immune dysfunction. Interleukin-10 (IL-10) may regulate this response.

Area of Science:

  • Immunology
  • Metabolic enzymes
  • Surgical trauma

Background:

  • Arginase is a key enzyme in arginine metabolism.
  • Arginase plays a role in the immune response to trauma.
  • Surgical procedures can impact the human immune system.

Purpose of the Study:

  • To investigate the effect of surgical trauma on arginase expression and activity in the human immune system.
  • To explore the relationship between surgical trauma, arginase, and immune mediators.

Main Methods:

  • Measured peripheral mononuclear cell (MNC) arginase activity and expression in patients undergoing surgery.
  • Assessed plasma nitric oxide metabolites and interleukin-10 (IL-10) levels.
  • Compared surgical patients with a control group of healthy volunteers.

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Main Results:

  • MNC arginase activity and arginase I protein expression significantly increased within 6 hours post-surgery.
  • Plasma nitric oxide metabolites decreased significantly after surgery.
  • Elevated IL-10 levels were associated with increased MNC arginase activity.

Conclusions:

  • Increased MNC arginase expression following surgery may contribute to immune dysfunction by altering arginine availability and nitric oxide metabolism.
  • Plasma IL-10 appears to play a regulatory role in MNC arginase activity after surgical trauma.