title: Statin use is associated with decreased CD-40 ligand expression on T lymphocytes of coronary atheroma plaque in patients with stable coronary artery disease.
abstract: OBJECTIVE
  Atherosclerosis is a chronic inflammatory disease. Statins suppress the inflammation in the plaque. This cross-sectional study was planned to evaluate the effect of statins on plaque T cell activation markers in patients with stable angina pectoris undergoing coronary intervention and atherectomy procedures.
  
  
  METHODS
  Twenty-six patients with stable angina with suitable for atherectomy coronary lesions were enrolled in the study. Fourteen of 26 patients who had been taking statin treatment for at least six months were assigned to the Group 1 (Statin group) and 12 patients who had not received any lipid lowering treatment comprised the Group 2 (Control group). Atherectomy specimens were studied with single and double immunohistochemical staining (CD25, CD69, and CD40L). Statistical analysis was performed using Student's t-test and Fisher's exact test.
  
  
  RESULTS
  There was no significant difference between the total tissue area of sections (Group 1: 8.4+/-0.9 mm2, Group 2: 7.8+/-0.9 mm2, p>0.05). CD3, CD25, CD69, and CD40L positive cells did not show statistically significant difference between the groups in unit area (mm2). There was no significant difference between the groups for percentage of T lymphocytes expressing CD25 (Group 1: 7.8+/-4.6%, Group 2: 7.8+/-5.9%, p=0.97) and CD 69 (Group 1: 12.9+/-4.6%, Group 2: 15.5+/-5.2%, p=0.203). The expression of CD40L was significantly lower in Group 1 than in Group 2 (Group 1: 4.8+/-3.9%, Group 2: 11.2+/-8.7%, p=0.034).
  
  
  CONCLUSIONS
  We concluded that, statin treatment may decrease the expression of CD40L on plaque T lymphocytes in patients with stable angina pectoris.
authors.affiliation: Department of Cardiology, Central Hospital, Izmir, Turkey. droturk@yahoo.com
authors.forename: Uğur
authors.initials: U
authors.lastname: Türk
authors.forename: Emin
authors.initials: E
authors.lastname: Alioğlu
authors.forename: Istemihan
authors.initials: I
authors.lastname: Tengiz
authors.forename: Ertuğrul
authors.initials: E
authors.lastname: Ercan
authors.forename: Reşat
authors.initials: R
authors.lastname: Mahmudov
authors.forename: Hamza
authors.initials: H
authors.lastname: Duygu
authors.forename: Cüneyt
authors.initials: C
authors.lastname: Türkoğlu
mesh_terms: D000787:Angina Pectoris; D017225:Atherectomy, Coronary; D019013:CD40 Antigens / Q000378:metabolism*; D016022:Case-Control Studies; D002784:Cholesterol / Q000097:blood; D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D003324:Coronary Artery Disease / Q000097:blood / Q000188:drug therapy* / Q000378:metabolism / Q000473:pathology / Q000601:surgery; D003430:Cross-Sectional Studies; D006801:Humans; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index; D013601:T-Lymphocytes / Q000378:metabolism*; D014280:Triglycerides / Q000097:blood
chemical_list: D019013:CD40 Antigens; D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors; D014280:Triglycerides; D002784:Cholesterol