Effect of atorvastatin (10 mg/day) on glucose metabolism in patients with the metabolic syndrome.
Large interventional studies have shown that statins may reduce the incidence of type 2 diabetes mellitus. However, it is uncertain whether short-term statin therapy can affect insulin sensitivity in patients with the metabolic syndrome. We evaluated the effect of atorvastatin (10 mg/day) in 10 insulin-resistant subjects (age 40 +/- 12 years, body mass index 33.6 +/- 5.2 kg/m(2), triglycerides 2.84 +/- 1.99 mmol/L [249 +/- 175 mg/dl], glucose 6.06 +/- 0.67 mmol/L [109 +/- 12 mg/dl)] using the homeostasis model assessment (HOMA) index (parameter of insulin resistance derived from fasting glucose and fasting insulin concentrations; 5.7 +/- 2.6) in a randomized placebo-controlled, double-blind, crossover study. Subjects were randomized to receive placebo or atorvastatin, each given for 6 weeks separated by a 6-week wash-out period. At the beginning and end of each treatment phase, the patients underwent an oral glucose tolerance test, a 72-hour continuous glucose measurement, and a detailed lipid determination, including a standardized fat tolerance test. Compared with placebo, atorvastatin resulted in a significant (p = 0.05) reduction in the HOMA index (-21%), fasting C-peptides (-18%), glucose (area under the curve during the oral glucose tolerance test, -7%), and a borderline (p = 0.08) reduction of insulin (-18%). The parameters derived from the continuous 72-hour glucose monitoring did not change. A significant reduction also occurred in the total and low-density lipoprotein cholesterol concentrations, although the fasting and postprandial triglyceride concentrations did not change significantly. However, we found a significant correlation between atorvastatin-induced changes in the HOMA and baseline HOMA and between the atorvastatin-induced changes in triglycerides and insulin concentrations. The free-fatty acid, interleukin-6, and high sensitivity C-reactive protein concentrations did not change. Our data indicated that in insulin-resistant, nondiabetic subjects, 6 weeks of atorvastatin (10 mg/day) resulted in significant improvement in insulin sensitivity.
Huptas
Sebastian
S
Department of Internal Medicine II, Klinikum Grosshadern, Ludwig-Maximilians University, Munich, Germany.
Geiss
Hans-Christian
HC
Otto
Carsten
C
Parhofer
Klaus Georg
KG
D000328:Adult; D000069059:Atorvastatin; D001786:Blood Glucose / Q000187:drug effects / Q000378:metabolism*; D002096:C-Peptide / Q000097:blood / Q000187:drug effects; D018592:Cross-Over Studies; D003924:Diabetes Mellitus, Type 2 / Q000517:prevention & control*; D004311:Double-Blind Method; D005260:Female; D006538:Heptanoic Acids / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors / Q000008:administration & dosage / Q000627:therapeutic use*; D007328:Insulin / Q000097:blood; D007333:Insulin Resistance; D008297:Male; D024821:Metabolic Syndrome / Q000188:drug therapy*; D011758:Pyrroles / Q000008:administration & dosage / Q000627:therapeutic use*; D016896:Treatment Outcome
D001786:Blood Glucose; D002096:C-Peptide; D006538:Heptanoic Acids; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors; D007328:Insulin; D011758:Pyrroles; D000069059:Atorvastatin