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Related Experiment Videos

Monocyte function before and after surgical trauma

W Haupt1, J Riese, C Mehler

  • 1Department of Surgery, University of Erlangen-Nuremberg, Germany.

Digestive Surgery
|December 9, 1998
PubMed
Summary
This summary is machine-generated.

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Surgical trauma impairs monocyte function, potentially increasing septic complications. Maintaining adequate monocyte activity before and after surgery is crucial for a smooth recovery from major operations.

Area of Science:

  • Immunology
  • Surgical Pathology

Background:

  • Monocytes/macrophages are central to immune responses, producing cytokines and presenting antigens via HLA-DR.
  • Monocyte function is significantly impacted by surgical disease and trauma.
  • Preoperative monocyte activation in some patients correlates with increased postoperative septic complications.

Purpose of the Study:

  • To investigate the impact of surgical trauma on monocyte function.
  • To correlate monocyte function with postoperative complications and outcomes.

Main Methods:

  • Assessed monocyte activation markers (e.g., HLA-DR, cytokine production).
  • Measured plasma cytokine concentrations (IL-6, IL-10) and activation markers (neopterin).
  • Evaluated lipopolysaccharide (LPS)-stimulated cytokine production (TNF-alpha, IL-6) post-surgery.

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Main Results:

  • Post-surgery, HLA-DR expression and LPS-stimulated TNF-alpha/IL-6 production decreased, indicating hyporesponsiveness.
  • Elevated postoperative neopterin and IL-6 correlated with complications and poor outcomes.
  • In septic shock, monocytes showed reduced reactivity to stimuli like endotoxin.

Conclusions:

  • Surgical trauma induces monocyte hyporesponsiveness, a risk factor for postoperative sepsis.
  • Adequate pre- and postoperative monocyte function is linked to better surgical outcomes.
  • Monitoring monocyte function may help predict and manage postoperative complications.