title: Elevated high sensitive C-reactive protein and apelin levels after percutaneous coronary intervention and drug-eluting stent implantation.
abstract: OBJECTIVE
  Percutaneous coronary intervention (PCI) triggers an acute inflammatory response, while sirolimus is known to have anti-inflammatory properties; the inflammatory system response to PCI after sirolimus-eluting stent placement remains unclear. The purpose of this study is to determine the changes in high sensitive C-reactive protein (hs-CRP) and apelin after PCI procedure and drug-eluting stent implantation in patients with and without reduced left ventricular systolic function.
  
  
  METHODS
  Forty-eight consecutive patients undergoing PCI at the Beijing Anzhen Hospital between July and September 2006 were recruited. Sirolimus-eluting stents were employed in all patients. Blood samples were drawn immediately before and 24 h after the procedure. Plasma hs-CRP and apelin levels were determined by enzyme immunoassay.
  
  
  RESULTS
  Paired t-test revealed a significant increase in both hs-CRP and apelin post-procedure (P=0.006 and P<0.0001, respectively). Patients with reduced left ventricular ejection fraction (LVEF) had significantly lower baseline apelin levels compared to those with normal ventricular function [(46.8+/-10.8) vs. (72.0+/-8.4) pg/ml, P<0.001]. However, apelin increased to a level similar to the level of those with normal left ventricular systolic function 24 h after the PCI procedure [(86.7+/-11.6) vs. (85.1+/-6.1) pg/ml, P=0.72].
  
  
  CONCLUSIONS
  hs-CRP and apelin levels increased after PCI and sirolimus-eluting stent implantation. Patients with impaired left ventricular systolic function had significantly lower baseline apelin levels, which increased significantly after PCI.
authors.affiliation: Beijing Anzhen Hospital, Capital Medical University, China. duxinheart@sina.com
authors.forename: Xin
authors.initials: X
authors.lastname: Du
authors.forename: Jun-ping
authors.initials: JP
authors.lastname: Kang
authors.forename: Jia-hui
authors.initials: JH
authors.lastname: Wu
authors.forename: Qiang
authors.initials: Q
authors.lastname: Lv
authors.forename: Chao-shu
authors.initials: CS
authors.lastname: Tang
authors.forename: Chang-sheng
authors.initials: CS
authors.lastname: Ma
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000379:methods; D000075244:Apelin Receptors; D002097:C-Reactive Protein / Q000096:biosynthesis*; D054855:Drug-Eluting Stents; D004730:Endothelium, Vascular / Q000473:pathology; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques / Q000379:methods; D008297:Male; D008875:Middle Aged; D043562:Receptors, G-Protein-Coupled / Q000096:biosynthesis*; D020123:Sirolimus / Q000008:administration & dosage; D015607:Stents; D013599:Systole; D016277:Ventricular Function, Left
chemical_list: C104575:APLNR protein, human; D000075244:Apelin Receptors; D043562:Receptors, G-Protein-Coupled; D002097:C-Reactive Protein; D020123:Sirolimus