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Exercise in patients with intermittent claudication elicits signs of inflammation and angiogenesis.
(Karolinska Institute)
(Karolinska Institute)
Linköping University, Department of Medicine and Health Sciences, Vascular surgery . Östergötlands Läns Landsting, Heart Centre, Department of Thoracic and Vascular Surgery. Linköping University, Faculty of Health Sciences.
2009 (English)In: European Journal of Vascular and Endovascular Surgery, ISSN 1078-5884, E-ISSN 1532-2165, Vol. 38, 689-696 p.Article in journal (Refereed) Published
Abstract [en]

Objectives

Previous studies have demonstrated elevation of systemic levels of inflammatory cytokines after treadmill exercise in patients with intermittent claudication (IC), but it is unknown if growth factor expression also is stimulated. The aim of this study was to assess whether physical exercise-induced ischemia elicits an inflammatory response and increase in local and systemic vascular growth factor expression in patients with IC.

Methods

Nineteen patients with IC had plasma concentrations of inflammatory markers (IL-6, TNF-alpha, hs-CRP) and vascular growth factors (VEGF and FGF-2) measured before and at four time points after a treadmill exercise test. In 10 patients a gastrocnemius muscle biopsy was obtained to measure VEGF and FGF-2 mRNA. Plasma concentrations of vWF were also measured. Five patients who underwent the treadmill test without experiencing calf pain were enrolled as controls.

Results

Plasma concentrations of IL-6 increased after exercise (p = 0.004), while TNF-alpha and hs-CRP were unchanged (p = 0.191 and p = 0.709, respectively). Plasma concentrations of VEGF were similar (p = 0.151) at the different time points after exercise but FGF-2 levels decreased (p = 0.013). In biopsies after treadmill testing VEGF-A mRNA was increased (p = 0.043), but no change was observed for FGF-2 (p = 0.456).

Conclusion

Exercise in IC triggers an inflammatory response as exemplified by elevated concentrations of IL-6. After exercise-induced pain, VEGF mRNA in calf muscle is increased. Therefore, it is plausible that angiogenesis is stimulated by exercise in IC.

Place, publisher, year, edition, pages
2009. Vol. 38, 689-696 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-52271DOI: 10.1016/j.ejvs.2009.08.005OAI: oai:DiVA.org:liu-52271DiVA: diva2:281079
Available from: 2009-12-14 Created: 2009-12-14 Last updated: 2017-12-12

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Wahlberg, Eric

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