期刊
DIABETES
卷 66, 期 9, 页码 2495-2502出版社
AMER DIABETES ASSOC
DOI: 10.2337/db17-0055
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资金
- Boehringer Ingelheim
- South Texas Veterans Health Care System
The objective of this study was to examine the effect of renal sodium-glucose cotransporter inhibition with empagliflozin on the fasting plasma glucose (FPG) concentration and beta-cell function in subjects with impaired fasting glucose (IFG). Eight subjects with normal fasting glucose (NFG) and eight subjects with IFG received empagliflozin (25 mg/day) for 2 weeks. FPG concentration and beta-cell function was measured with a nine-step hyperglycemic clamp before and 48 h and 14 days after the start of empagliflozin. Empagliflozin caused 50+/-4 and 45+/-4 g glucosuria on day 2 in subjects with IFG and NFG, respectively, and the glucosuria was maintained for 2 weeks in both groups. The FPG concentration decreased only in subjects with IFG from 110+/-2 to 103+/-3 mg/dL (P < 0.01) after 14 days. The FPG concentration remained unchanged (95+/-2 to 94+/-2 mg/dL) in subjects with NFG. Empagliflozin enhanced beta-cell function only in subjects with IFG. The incremental area under the plasma C-peptide concentration curve during the hyperglycemic clamp increased by 22+/-4 and 23+/-4% after 48 h and 14 days, respectively (P < 0.01); the plasma C-peptide response remained unchanged in subjects with NFG. Insulin sensitivity during the hyperglycemic clamp was not affected by empagliflozin in either IFG or NFG. Thus, beta-cell function measured with the insulin secretion/insulin sensitivity (disposition) index increased significantly in IFG, but not in subjects with normal glucose tolerance. Inhibition of renal sodium-glucose cotransport with empagliflozin in subjects with IFG and NFG produces comparable glucosuria but lowers the plasma glucose concentration and improves beta-cell function only in subjects with IFG.
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