title: Effects of atorvastatin on coagulation parameters and homocysteine in patients with primary hypercholesterolemia.
abstract: BACKGROUND
  The mechanism of the antithrombotic action of statins is unclear. We evaluated the effects of atorvastatin on the coagulation parameters and homocysteine levels of patients with primary hypercholesterolemia.
  
  
  METHODS
  Forty-four patients with primary hypercholesterolemia were treated with atorvastatin 10 mg/d for 24 weeks at Adnan Menderes University Medical Faculty, Division of Hematology, Aydin, Turkey. We evaluated the effects of atorvastatin on homocysteine; lipid parameters such as total cholesterol, low-density-lipoprotein (LDL) cholesterol, very-low-density-lipoprotein (VLDL) cholesterol, triglycerides, high-density-lipoprotein (HDL) cholesterol, lipoprotein (a), apolipoprotein Al and apolipoprotein B; and coagulation parameters such as fibrinogen, antithrombin-III, protein C, protein S, von Willebrand factor, D-dimer, partial thromboplastin time and prothrombin time; and hematological parameters such as hemoglobin, white blood cell and platelet counts, vitamin B12 and folic acid.
  
  
  RESULTS
  Atorvastatin significantly decreased the levels of total cholesterol, LDL cholesterol (p < 0.001), VLDL cholesterol, triglycerides and apo B (p < 0.001). The level of HDL cholesterol significantly increased with atorvastatin treatment (p < 0.001). Atorvastatin significantly increased the levels of fibrinogen (p < 0.001), but it had no effect on other coagulation factors and homocysteine (p > 0.05). After treatment, while vitamin B12 levels significantly increased (p < 0.05), other hematological parameters were not changed with atorvastatin (p > 0.05).
  
  
  CONCLUSIONS
  Although there were beneficial effects of atorvastatin on lipid parameters, atorvastatin did not significantly change the level of homocysteine and hematological, and coagulation parameters, with the exception of fibrinogen and vitamin B12 levels.
authors.affiliation: Division of Hematology, Department of Internal Medicine, Adnan Menderes University Medical School, 09100 Aydin, Turkey. zahitb@yahoo.com
authors.forename: Zahit
authors.initials: Z
authors.lastname: Bolaman
authors.forename: Gurhan
authors.initials: G
authors.lastname: Kadikoylu
authors.forename: Nihat
authors.initials: N
authors.lastname: Ozgel
authors.forename: Cigdem
authors.initials: C
authors.lastname: Yenisey
mesh_terms: D000328:Adult; D000368:Aged; D000069059:Atorvastatin; D015415:Biomarkers / Q000097:blood; D001777:Blood Coagulation / Q000187:drug effects*; D003327:Coronary Disease / Q000209:etiology / Q000517:prevention & control; D005260:Female; D005340:Fibrinogen / Q000187:drug effects / Q000378:metabolism; D005500:Follow-Up Studies; D006538:Heptanoic Acids / Q000627:therapeutic use*; D006710:Homocysteine / Q000097:blood* / Q000187:drug effects; D006801:Humans; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors / Q000627:therapeutic use*; D006937:Hypercholesterolemia / Q000097:blood / Q000150:complications / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011758:Pyrroles / Q000627:therapeutic use*; D016896:Treatment Outcome
chemical_list: D015415:Biomarkers; D006538:Heptanoic Acids; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors; D011758:Pyrroles; D006710:Homocysteine; D005340:Fibrinogen; D000069059:Atorvastatin