title: Efficacy and drug interactions of the new HMG-CoA reductase inhibitors cerivastatin and atorvastatin in CsA-treated renal transplant recipients.
abstract: BACKGROUND
  Hyperlipidaemia is an important risk factor for cardiovascular disease in renal transplant recipients. The aim of this study was to test the efficacy and possible drug-drug interactions of the new HMG-CoA reductase inhibitors (statins) atorvastatin and cerivastatin in cyclosporin A (CsA)-treated renal transplant patients. Subjects and methods. Thirty patients with stable graft function and LDL cholesterol of 130 mg/dl were randomly assigned to active treatment groups (10 mg atorvastatin or 0.2 mg cerivastatin), or a control group. CsA blood trough levels were controlled on a weekly basis and adapted if they changed more than 25% from baseline values (100-150 ng/ml). Lipid levels and routine laboratory parameters before and after a treatment period of 3 months were compared.
  
  
  RESULTS
  In the group treated with cerivastatin no significant changes in CsA blood trough levels occurred (CsA 116+/-21 ng/ml vs 110+/-20 ng/ml). In contrast, in the group treated with atorvastatin, four of 10 patients had a rise in CsA blood trough levels of more than 25% within 7-14 days of starting therapy. In the remaining patients no significant changes in CsA drug levels occurred. After therapy with atorvastatin or cerivastatin, total cholesterol, LDL cholesterol, and triglycerides were significantly lower compared with baseline conditions. No changes of CsA or lipoprotein levels were present in the control group.
  
  
  CONCLUSIONS
  In our study population both statins were very effective in lowering elevated LDL cholesterol levels. Cerivastatin did not influence CsA blood trough levels, whereas atorvastatin increased CsA levels in four of 10 patients. Further research in a larger study is necessary in order to confirm these results and to investigate the possible reasons for this drug interaction.
authors.affiliation: Medizinische Klinik IV, University of Erlangen-Nürnberg, Erlangen, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Renders
authors.forename: I
authors.initials: I
authors.lastname: Mayer-Kadner
authors.forename: C
authors.initials: C
authors.lastname: Koch
authors.forename: S
authors.initials: S
authors.lastname: Schärffe
authors.forename: K
authors.initials: K
authors.lastname: Burkhardt
authors.forename: R
authors.initials: R
authors.lastname: Veelken
authors.forename: R E
authors.initials: RE
authors.lastname: Schmieder
authors.forename: I A
authors.initials: IA
authors.lastname: Hauser
mesh_terms: D000328:Adult; D000368:Aged; D000069059:Atorvastatin; D002318:Cardiovascular Diseases / Q000209:etiology / Q000517:prevention & control; D016572:Cyclosporine / Q000008:administration & dosage / Q000097:blood / Q000627:therapeutic use*; D004347:Drug Interactions; D005260:Female; D006538:Heptanoic Acids / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D006949:Hyperlipidemias / Q000150:complications / Q000188:drug therapy; D000960:Hypolipidemic Agents / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use; D007166:Immunosuppressive Agents / Q000008:administration & dosage / Q000097:blood / Q000627:therapeutic use; D016030:Kidney Transplantation; D008297:Male; D008875:Middle Aged; D011725:Pyridines / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D011758:Pyrroles / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D012449:Safety
chemical_list: D006538:Heptanoic Acids; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors; D000960:Hypolipidemic Agents; D007166:Immunosuppressive Agents; D011725:Pyridines; D011758:Pyrroles; D016572:Cyclosporine; D000069059:Atorvastatin; C086276:cerivastatin