Exercise in patients with intermittent claudication elicits signs of inflammation and angiogenesis

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.

Medienart:

E-Artikel

Erscheinungsjahr:

2009

Erschienen:

2009

Enthalten in:

Zur Gesamtaufnahme - volume:38

Enthalten in:

European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery - 38(2009), 6 vom: 15. Dez., Seite 689-96

Sprache:

Englisch

Beteiligte Personen:

Palmer-Kazen, U [VerfasserIn]
Religa, P [VerfasserIn]
Wahlberg, E [VerfasserIn]

Links:

Volltext

Themen:

103107-01-3
9007-41-4
Biomarkers
C-Reactive Protein
Fibroblast Growth Factor 2
IL6 protein, human
Inflammation Mediators
Interleukin-6
Journal Article
RNA, Messenger
Research Support, Non-U.S. Gov't
Tumor Necrosis Factor-alpha
VEGFA protein, human
Vascular Endothelial Growth Factor A

Anmerkungen:

Date Completed 17.12.2009

Date Revised 19.11.2015

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.ejvs.2009.08.005

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM191560480