title: A randomized placebo controlled trial of the effect of preoperative statin use on matrix metalloproteinases and tissue inhibitors of matrix metalloproteinases in areas of low and peak wall stress in patients undergoing elective open repair of abdominal aortic aneurysm.
abstract: BACKGROUND
  A double-blind, randomized controlled trial was carried out to study the effects of statins on matrix metalloproteinases (MMPs) and tissue inhibitors of matrix metalloproteinases (TIMPs) in areas of peak and low abdominal aortic aneurysm (AAA) wall stress.
  
  
  METHODS
  A total of 40 patients undergoing elective open AAA repair were randomized to receive either atorvastatin 80 mg (n = 20) or placebo (n = 20) for 4 weeks preoperatively. Finite element analysis was used to determine AAA wall stress distribution. Full thickness aortic samples were obtained at surgery from areas of low and peak wall stress, snap-frozen, and stored at -80°C for subsequent MMP-2, -8, and -9 and TIMP-1 and -2 analyses. Statistical analysis was performed using SPSS 16.0 (SPSS Inc, Chicago, IL).
  
  
  RESULTS
  Both groups were well matched (p > 0.05) regarding age, gender, comorbidities, and duration of hospital stay. There were no statistically significant differences in levels of MMPs and TIMPs between the statin and placebo group and between areas of low and peak AAA wall stress.
  
  
  CONCLUSIONS
  The short-term use of statins is not associated in reducing levels of MMP 2, 8, and 9 and TIMP-1 and -2 in areas of low and peak wall stress in patients with AAA.
authors.affiliation: University of Hull, Kingston-upon-Hull, United Kingdom.
authors.forename: M N A Abdul
authors.initials: MN
authors.lastname: Rahman
authors.forename: Junaid Alam
authors.initials: JA
authors.lastname: Khan
authors.forename: Fayyaz Ali Khan
authors.initials: FA
authors.lastname: Mazari
authors.forename: Katherine
authors.initials: K
authors.lastname: Mockford
authors.forename: Peter Thomas
authors.initials: PT
authors.lastname: McCollum
authors.forename: Ian Clifford
authors.initials: IC
authors.lastname: Chetter
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001012:Aorta, Abdominal / Q000187:drug effects* / Q000201:enzymology / Q000473:pathology / Q000601:surgery; D017544:Aortic Aneurysm, Abdominal / Q000188:drug therapy* / Q000201:enzymology / Q000473:pathology / Q000601:surgery; D000069059:Atorvastatin; D016009:Chi-Square Distribution; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D017558:Elective Surgical Procedures; D004739:England; D005260:Female; D020342:Finite Element Analysis; D006538:Heptanoic Acids / Q000008:administration & dosage*; D006801:Humans; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors / Q000008:administration & dosage*; D008297:Male; D020778:Matrix Metalloproteinase 2 / Q000378:metabolism; D020784:Matrix Metalloproteinase 8 / Q000378:metabolism; D020780:Matrix Metalloproteinase 9 / Q000378:metabolism; D020782:Matrix Metalloproteinases / Q000378:metabolism*; D008875:Middle Aged; D015990:Placebo Effect; D011300:Preoperative Care; D011758:Pyrroles / Q000008:administration & dosage*; D013314:Stress, Mechanical; D013997:Time Factors; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000378:metabolism; D019716:Tissue Inhibitor of Metalloproteinase-2 / Q000378:metabolism; D019714:Tissue Inhibitor of Metalloproteinases / Q000378:metabolism*; D016896:Treatment Outcome; D014656:Vascular Surgical Procedures
chemical_list: D006538:Heptanoic Acids; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors; D011758:Pyrroles; D019715:Tissue Inhibitor of Metalloproteinase-1; D019714:Tissue Inhibitor of Metalloproteinases; D019716:Tissue Inhibitor of Metalloproteinase-2; D000069059:Atorvastatin; D020782:Matrix Metalloproteinases; C522361:MMP2 protein, human; D020778:Matrix Metalloproteinase 2; C488762:MMP8 protein, human; D020784:Matrix Metalloproteinase 8; D020780:Matrix Metalloproteinase 9