Abstract Title:

Statin treatment is associated with insulin sensitivity decrease in type 1 diabetes mellitus: A prospective, observational 56-month follow-up study.

Abstract Source:

J Clin Lipidol. 2016 Jul-Aug;10(4):1004-10. Epub 2016 May 10. PMID: 27578133

Abstract Author(s):

Lea Duvnjak, Kristina Blaslov

Article Affiliation:

Lea Duvnjak


BACKGROUND: Statins are effective in the primary and secondary prevention of cardiovascular events in individuals with and without diabetes. Emerging evidence, however, suggests that statins might reduce insulin sensitivity and secretion in healthy population and in type 2 diabetes.

OBJECTIVE: We aimed to investigate the effect of statin therapy introduction on insulin sensitivity in patients with type 1 diabetes mellitus (T1DM).

METHODS: This prospective observational 56-month long study included 832 randomly selected T1DM patients aged 25 to 61 years. Uncontrolled dyslipidemia and clinician-perceived need for treatment, rather than randomization, were basis for individuals being started on either atorvastatin or simvastatin (10-40 mg); N = 345, 41.47%. Patients on statin treatment were compared with those unexposed to statin. Insulinsensitivity was assessed using equation derived from euglycemic-hyperinsulinemic clamp studies-estimated glucose disposal rate.

RESULTS: Patients who started statin therapy (N = 345, 59.42% atorvastatin and 40.58% simvastatin) experienced a greater decrease in insulin sensitivity (19.27% vs 12.82% P < .001) and metabolic control deterioration compared with statin-free group. The risk of decrease in insulin sensitivity attributable to statin use was 36.7% (hazard ratio 1.36; 95% confidence interval 1.31-1.43) after adjustment for age, gender, disease duration, smoking status, and the concomitantantihypertensive therapy.

CONCLUSION: Although there is still a lack of a clear molecular explanation on the adverse effects of statin therapy on insulin sensitivity, we showed that it deteriorates insulin sensitivity in T1DM. The cardiovascular benefits of statin treatment might outweigh the risk of developing insulin resistance, but, the possible metabolic control worsening merits to be considered.

Study Type : Human Study

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