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Differential alterations in plasma colony-stimulating factor concentrations after coronary artery bypass graft

Y Denizot1, S Karoutsos, N Nathan

  • 1EP CNRS 118, Faculté de Médecine, 2 rue Dr. marcland, Limoges, 87025, France. yves.dezinot@unilim.fr

Cytokine
|March 13, 2001
PubMed

Insights

Following cardiac surgery, plasma levels of granulocyte-colony stimulating factor (G-CSF) and macrophage-colony stimulating factor (M-CSF) increased, suggesting a role in the inflammatory response. GM-CSF levels remained unchanged.

Area of Science:

  • Cardiovascular Surgery
  • Immunology
  • Inflammation Biology

Background:

  • Cardiac surgery, particularly with extracorporeal circulation (ECC), can trigger significant inflammatory responses.
  • Colony-stimulating factors (CSFs) are key regulators of inflammatory and immune cell function.
  • The specific role of different CSFs in post-cardiac surgery inflammation remains incompletely understood.

Purpose of the Study:

  • To investigate the involvement of granulocyte-CSF (G-CSF), macrophage-CSF (M-CSF), and GM-CSF in the inflammatory process following coronary artery bypass graft (CABG) surgery.
  • To quantify plasma CSF levels in patients undergoing CABG with ECC.

Main Methods:

  • Plasma concentrations of G-CSF, M-CSF, and GM-CSF were measured in 31 patients undergoing CABG surgery with ECC.
  • Measurements were taken at various time points, including post-operative hours 6 and 24.
  • CSF levels were analyzed in relation to the development of post-operative complications.

Main Results:

  • Plasma G-CSF and M-CSF concentrations significantly increased after ECC weaning, peaking at 6 hours post-operatively and remaining elevated at 24 hours.
  • Plasma GM-CSF levels showed no significant change throughout the study period.
  • No significant differences in M-CSF, G-CSF, or GM-CSF levels were observed between patients who developed post-operative complications and those who did not.

Conclusions:

  • Macrophage-CSF and granulocyte-CSF are produced following CABG surgery, even with high-dose aprotinin use aimed at mitigating inflammation.
  • These findings suggest that G-CSF and M-CSF may contribute to the inflammatory cascade commonly observed after cardiac surgery.
  • Further research is warranted to elucidate the precise mechanisms and clinical implications of CSF involvement in post-CABG inflammation.

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