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- W2093303670 abstract "OBJECTIVE—To examine the effects of dipeptidyl peptidase-IV (DPP-4) inhibition on meal-related β-cell function and insulin sensitivity over 52 weeks in type 2 diabetes. RESEARCH DESIGN AND METHODS—In a 12-week core study, placebo (n = 51) or vildagliptin (n = 56; 50 mg OD) was added to metformin treatment (1.5–3.0 mg/day). A 40-week extension followed in 71 patients. Meal tests were performed at 0, 12, 24, and 52 weeks; glucose, insulin, and C-peptide were evaluated. RESULTS—In subjects completing 52 weeks with participation in all meal tests (n = 57), HbA1c (A1C) decreased in the vildagliptin/metformin group (VM group, n = 31) but increased in the placebo/metformin group (PM group, n = 26; between-group difference −1.0 ± 0.2%; P < 0.001; baseline of all subjects combined 7.7 ± 0.1%). Also, fasting glucose decreased in the VM group but increased in the PM group (difference −0.9 ± 0.3 mmol/l, P = 0.016; baseline 9.8 ± 0.3 mmol/l). Insulin secretion (postmeal suprabasal area under the 0- to 30-min C-peptide curve divided by the 30-min increase in glucose) was increased in the VM group but was reduced in the PM group (difference +0.011 ± 0.03 pmol/l 30 min/mmol/l, P = 0.018; baseline 0.036 ± 0.02). Insulin sensitivity during meal ingestion (oral glucose insulin sensitivity) increased in the VM group but was not altered in the PM group (difference +27 ± 4 ml · min−1 · m−2, P = 0.036; baseline 246 ± 6). Insulin secretion related to insulin sensitivity (adaptation index) increased in the VM group but decreased in the PM group (difference +3.2 ± 1.0, P = 0.040; baseline 9.1 ± 0.5). The change in adaptation index correlated to the change in A1C (r = −0.39, P = 0.004). CONCLUSIONS—This study presents evidence that DPP-4 inhibition by vildagliptin when added to metformin in type 2 diabetes over 52 weeks improves β-cell function along with improved postmeal insulin sensitivity." @default.
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- W2093303670 date "2005-08-01" @default.
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- W2093303670 title "Improved Meal-Related β-Cell Function and Insulin Sensitivity by the Dipeptidyl Peptidase-IV Inhibitor Vildagliptin in Metformin-Treated Patients With Type 2 Diabetes Over 1Year" @default.
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- W2093303670 doi "https://doi.org/10.2337/diacare.28.8.1936" @default.
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