European Journal of Applied Physiology

, Volume 113, Issue 4, pp 851–858

Increase in IL-6, TNF-α, and MMP-9, but not sICAM-1, concentrations depends on exercise duration

  • Dace Reihmane
  • Antra Jurka
  • Peteris Tretjakovs
  • Flemming Dela
Original Article

DOI: 10.1007/s00421-012-2491-9

Cite this article as:
Reihmane, D., Jurka, A., Tretjakovs, P. et al. Eur J Appl Physiol (2013) 113: 851. doi:10.1007/s00421-012-2491-9

Abstract

It has been suggested that exercise intensity is of importance in the regulation of increase in pro-inflammatory molecules, but there is still a debate about the effect of duration on these molecules. Therefore, the effect of exercise duration on the serum concentrations of interleukin-6 (IL-6), tumour necrosis factor-α (TNF-α), soluble form of intercellular adhesion molecule-1 (sICAM-1), and matrix metalloproteinase-9 (MMP-9) was studied in 22 half-marathon (HM) and 18 marathon (M) male amateur runners who completed their exercise task in 1.8 ± 0.2 (mean ± standard deviation) and 3.6 ± 0.4 h, respectively (thus, average speed was 11.7 ± 1.5 and 11.9 ± 1.8 km h−1, respectively). Blood was sampled 2 days before, 15 min after, and 28 h after the race. IL-6, TNF-α, and MMP-9 always increased immediately after exercise, but the increase was larger (P < 0.05) in M versus HM (∆IL-6: 31 ± 24 vs. 5 ± 4 pg ml−1; ∆TNF-α: 1.7 ± 1.9 vs. 0.5 ± 0.8 pg ml−1; MMP-9: 288 ± 216 vs. 145 ± 128 ng ml−1, respectively). sICAM-1 also increased with exercise, but similarly in M and HM (20 ± 40 vs. 23 ± 32 ng ml−1, respectively). Only sICAM-1 remained elevated 28 h post-exercise in both HM and M, while IL-6, TNF-α, and MMP-9 returned to pre-exercise levels. Competitive HM and M races induce significant increases in IL-6, TNF-α, sICAM-1, and MMP-9 concentrations. As HM and M runners performed the competition with similar absolute intensity, the difference in response between the groups suggests that exercise duration is of importance in the regulation of IL-6, TNF-α, and MMP-9, but not sICAM-1 concentrations in response to prolonged running.

Keywords

Exercise Cytokines sICAM-1 MMP-9 Inflammation 

Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Dace Reihmane
    • 1
    • 3
  • Antra Jurka
    • 2
    • 3
  • Peteris Tretjakovs
    • 2
    • 3
  • Flemming Dela
    • 1
  1. 1.Xlab, Department of Biomedical Sciences, Faculty of Health Sciences, Center for Healthy AgingUniversity of CopenhagenCopenhagenDenmark
  2. 2.Pauls Stradins Clinical University HospitalRigaLatvia
  3. 3.Institute of Clinical and Experimental MedicineUniversity of LatviaRigaLatvia

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