Inflammation

, Volume 19, Issue 1, pp 83–99

Effects of interleukin-6 (IL-6) and transforming growth factor-β (TGF-β) on neutrophil elastase release

  • U. Bank
  • D. Reinhold
  • D. Kunz
  • H. -U. Schulz
  • Ch. Schneemilch
  • W. Brandt
  • S. Ansorge
Original Articles

DOI: 10.1007/BF01534383

Cite this article as:
Bank, U., Reinhold, D., Kunz, D. et al. Inflammation (1995) 19: 83. doi:10.1007/BF01534383

Abstract

The proinflammatory cytokine interleukin-6 (IL-6) and its potential opponent, transforming growth factor-β (TGF-β1), have been discussed as being involved in the regulation of inflammatory processes following trauma and infections. The aim of this study was to investigate the effect of these cytokines on the regulation of neutrophil degranulation. The posttraumatic time courses of the plasma concentrations of IL-6, and the elastase-α1-proteinase-inhibitor complex as marker of degranulation in patients undergoing severe trauma were found to be highly correlated, whereas TGF-β1 levels were determined to be not significantly altered. The close temporal correlation of IL-6 and elastase levels could be confirmed by investigation of exudates derived from the surgical area. To prove these in vivo findings, the effect of IL-6 and TGF-β1 on the degranulation of isolated neutrophils of healthy donors was investigated in vitro. Pathological high IL-6 concentrations were found to be capable of inducing a significant release of lysosomal elastase in a concentration-dependent manner, whereas the degranulation was unaffected by TGF-β1. In conclusion, these data suggest an involvement of IL-6 in the regulation of neutrophil degranulation under pathological conditions. However, TGF-β1 seems to have no direct regulatory effect besides its described chemotactic function on neutrophils.

Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • U. Bank
    • 1
  • D. Reinhold
    • 1
  • D. Kunz
    • 2
  • H. -U. Schulz
    • 3
  • Ch. Schneemilch
    • 4
  • W. Brandt
    • 4
  • S. Ansorge
    • 1
  1. 1.Division of Experimental Internal MedicineCenter of Internal MedicineGermany
  2. 2.Department of Clinical ChemistryOtto von Guericke University Magdeburg, Medical SchoolMagdeburgGermany
  3. 3.Department of SurgeryGermany
  4. 4.Department of Anesthesiology and Intensive Care MedicineGermany