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Soluble cytokine receptors and receptor antagonists are sequentially released after trauma

M Cinat1, K Waxman, N D Vaziri

  • 1Department of Surgery, University of California Irvine Medical Center, Orange 92668, USA.

The Journal of Trauma
|July 1, 1995
PubMed

Insights

Trauma patients show elevated levels of soluble tumor necrosis factor receptors (sTNF-R) upon emergency department arrival. This suggests a potential sequential release pattern of these receptors following traumatic injury.

Area of Science:

  • Immunology
  • Trauma Medicine
  • Biochemistry

Background:

  • Cytokine receptors and receptor antagonists (RAs) are implicated in trauma response.
  • The sequential release of cytokines after injury is a known phenomenon.
  • The dynamic changes in soluble cytokine receptors and RAs post-trauma require further investigation.

Purpose of the Study:

  • To investigate the hypothesis that soluble cytokine receptors and RAs are sequentially released after traumatic injury.
  • To quantify the levels of specific soluble cytokine receptors and RAs in trauma patients.
  • To compare these levels to healthy controls and analyze their dynamics over time.

Main Methods:

  • Enzyme-linked immunosorbent assay (ELISA) kits were used to measure levels of tumor necrosis factor (TNF), soluble TNF-receptors (sTNF-R) 55 kd and 75 kd, interleukin (IL)-1, IL-1 RA, IL-2, and IL-2r.
  • Sera were collected from 22 trauma patients on arrival and serially for up to 7 days.
  • Sera from 22 healthy individuals served as normal controls.

Main Results:

  • No detectable levels of TNF, IL-1, or IL-2 were found in patient sera post-injury.
  • Both 55 kd and 75 kd sTNF-R were significantly elevated in trauma patients upon emergency department arrival compared to controls (p < 0.001).
  • Elevated sTNF-R levels were 2,441 +/- 506 pg/mL for 55 kd and 4,736 +/- 537 pg/mL for 75 kd.

Conclusions:

  • Traumatic injury leads to a significant and immediate elevation of soluble TNF receptors.
  • The findings support the hypothesis of a sequential release of soluble cytokine receptors post-trauma.
  • Further research is warranted to explore the clinical implications of these early receptor changes in trauma care.

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