title: Peripheral arterial revascularization causing parallel increased activity of pro- and anti-inflammatory mediators.
abstract: OBJECTIVE
  The aim of this study was to investigate the interaction between the proinflammatory mediator interleukin (IL)-6 and anti-inflammatory mediator IL-10 in ischemia reperfusion injury following peripheral arterial revascularization.
  
  
  METHODS
  Three groups of patients were recruited (group 1: femoral angiography alone [n=14]; group 2: radiologically successful ilio/femoral angioplasty [n=10]; and group 3: peripheral surgical bypass [n=11]). Peripheral venous blood obtained for all patients at pre-procedure and at 1 h and 24 h post-procedure. After centrifugation supernatant plasma was separated and analysed for proinflammatory cytokine IL-6 and anti-inflammatory cytokine IL-10 using enzyme linked immunosorbent assay (ELISA) technique.
  
  
  RESULTS
  Levels of IL-6 at 1 and 24 h were significantly higher in group 3 (P<0.05 and P<0.01, respectively) and at 24 h in group 2 as compared to group 1 (P<0.05). Levels of IL-10 were significantly higher in group 3 at 24 h (P<0.05). In group 2 levels of IL-10 higher than group 1, but this did not reach statistical significance (P=0.07).
  
  
  CONCLUSIONS
  Raised levels of IL-6 at 1 and 24 h in patients undergoing operative peripheral bypass suggest early and persistent proinflammatory activity, similarly patients with successful angioplasty also demonstrated similar persistent proinflammatory activity of IL-6 at 24 h. Raised levels of IL-10 at 24 h represents anti-inflammatory properties of IL-10 counter acting inflammatory response.
authors.affiliation: Hammersmith Hospital, London, UK. gtash13@hotmail.com
authors.forename: J H
authors.initials: JH
authors.lastname: Parmar
authors.forename: M
authors.initials: M
authors.lastname: Aslam
authors.forename: N J
authors.initials: NJ
authors.lastname: Standfield
mesh_terms: D000368:Aged; D017130:Angioplasty / Q000009:adverse effects*; D015415:Biomarkers / Q000097:blood; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005263:Femoral Artery / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D007249:Inflammation / Q000097:blood* / Q000209:etiology; D016753:Interleukin-10 / Q000097:blood*; D015850:Interleukin-6 / Q000097:blood*; D008297:Male; D016491:Peripheral Vascular Diseases / Q000000981:diagnostic imaging / Q000601:surgery*; D011859:Radiography; D015427:Reperfusion Injury / Q000097:blood* / Q000209:etiology; D013997:Time Factors; D014656:Vascular Surgical Procedures / Q000009:adverse effects*
chemical_list: D015415:Biomarkers; C508609:IL10 protein, human; C508600:IL6 protein, human; D015850:Interleukin-6; D016753:Interleukin-10