Effect of regression from prediabetes to normal glucose regulation on long-term reduction in diabetes risk: results from the Diabetes Prevention Program Outcomes Study

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• 作者：Leigh Perreault ; MD^a ; Qing Pan^b ; Kieren J Mather ; MD^c ; Karol E Watson ; MD^d ; Richard F Hamman ; MD DrPh^e ; Steven E Kahn ; MB ChB^f ; for the Diabetes Prevention Program Research Group
• 刊名：The Lancet
• 出版年：2012
• 期刊代码：182_01406736
• 类别：med
• 出版时间：16-22 June, 2012
• 卷：379
• 期：9833
• 页码：2243-2251
• 文件大小：395 K

摘要

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Summary

Background

Our objective was to quantify and predict diabetes risk reduction during the Diabetes Prevention Program Outcomes Study (DPPOS) in participants who returned to normal glucose regulation at least once during the Diabetes Prevention Program (DPP) compared with those who consistently met criteria for prediabetes.

Methods

DPPOS is an ongoing observational study of participants from the DPP randomised trial. For this analysis, diabetes cumulative incidence in DPPOS was calculated for participants with normal glucose regulation or prediabetes status during DPP with and without stratification by previous randomised treatment group. Cox proportional hazards modelling and generalised linear mixed models were used to quantify the effect of previous (DPP) glycaemic status on risk of later (DPPOS) diabetes and normal glucose regulation status, respectively, per SD in change. Included in this analysis were 1990 participants of DPPOS who had been randomly assigned to treatment groups during DPP (736 intensive lifestyle intervention, 647 metformin, 607 placebo). These studies are registered at , (DPP) and (DPPOS).

Findings

Diabetes risk during DPPOS was 56%lower for participants who had returned to normal glucose regulation versus those who consistently had prediabetes (hazard ratio [HR] 0路44, 95%CI 0路37-0路55, p<0路0001) and was unaffected by previous group assignment (interaction test for normal glucose regulation and lifestyle intervention, p=0路1722; normal glucose regulation and metformin, p=0路3304). Many, but not all, of the variables that increased diabetes risk were inversely associated with the chance of a participant reaching normal glucose regulation status in DPPOS. Specifically, previous achievement of normal glucose regulation (odds ratio [OR] 3路18, 95%CI 2路71-3路72, p<0路0001), increased 尾-cell function (OR 1路28; 95%CI 1路18-1路39, p<0路0001), and insulin sensitivity (OR 1路16, 95%CI 1路08-1路25, p<0路0001) were associated with normal glucose regulation in DPPOS, whereas the opposite was true for prediction of diabetes, with increased 尾-cell function (HR 0路80, 95%CI 0路71-0路89, p<0路0001) and insulin sensitivity (HR 0路83, 95%CI 0路74-0路94, p=0路0001) having a protective effect. Among participants who did not return to normal glucose regulation in DPP, those assigned to the intensive lifestyle intervention had a higher diabetes risk (HR 1路31, 95%CI 1路03-1路68, p=0路0304) and lower chance of normal glucose regulation (OR 0路59, 95%CI 0路42-0路82, p=0路0014) than did the placebo group in DPPOS.

Interpretation

We conclude that prediabetes is a high-risk state for diabetes, especially in patients who remain with prediabetes despite intensive lifestyle intervention. Reversion to normal glucose regulation, even if transient, is associated with a significantly reduced risk of future diabetes independent of previous treatment group.

Funding

US National Institutes of Health.