期刊
DIABETES CARE
卷 34, 期 7, 页码 1601-1604出版社
AMER DIABETES ASSOC
DOI: 10.2337/dc11-0046
关键词
-
资金
- Canadian Institutes of Health Research
- Canadian Diabetes Association
- GlaxoSmithKline
OBJECTIVE-In the Canadian Normoglycemia Outcome Evaluation (CANOE) trial, low-dose rosiglitazone/metformin reduced the risk of diabetes in subjects with impaired glucose tolerance by 66% over a median of 3.9 years. We evaluate the temporal changes in glycemic control, insulin sensitivity, and beta-cell function during this trial. RESEARCH DESIGN AND METHODS-CANOE participants (n = 207) underwent annual oral glucose tolerance testing, enabling temporal comparison of glycemia, insulin sensitivity (Matsuda index), and beta-cell function (insulin secretion-sensitivity index-2 [ISSI-21) between the rosiglitazone/metformin and placebo arms. RESULTS-Glycemic parameters and insulin sensitivity improved in the rosiglitazone/metformin arm in year 1, but deteriorated in the years thereafter as in the placebo arm. Generalized estimating equation analysis confirmed that both insulin sensitivity and beta-cell function decreased over time (Matsuda: beta = -0.0515, P < 0.0001; ISSI-2: beta = -6.6507, P < 0.0001), with no significant time-by-treatment interaction (Matsuda: P = 0.57; ISSI-2: P = 0.22). CONCLUSIONS-Despite preventing incident diabetes, low-dose rosiglitazone/metformin did not modify the natural history of worsening insulin resistance and beta-cell dysfunction.
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