Bedtime insulin/daytime glipizide. Effective therapy for sulfonylurea failures in NIDDM.
Bedtime insulin (BI)/daytime sulfonylurea ( DSU) therapy was studied double-blind in 30 non-insulin-dependent diabetes mellitus subjects in whom sulfonylurea (SU) therapy had failed. Subjects were switched to glipizide for 2 months (phase I) to confirm failure (fasting plasma glucose [FPG] 12.0 +/- 0.4 mmol/l) and then randomly assigned into three groups: BI-DSU; BI-no DSU; and DSU-no BI. During phase II (3 months), the BI dose was fixed (20 U/1.73 m2, low-dose). In phase III (3 months), BI was titrated up (high-dose) to achieve good control or until hypoglycemic symptoms prevented further dose increases. In phase IV (6 months), 25 of the 30 original subjects received open-labeled, high-dose BI-DSU. Low-dose BI-DSU markedly reduced FPG (13.6 +/- 0.8 to 8.0 +/- 0.6 mmol/l, P < 0.001), mean 24-h glucose (P < 0.001), HbA1c (8.9 +/- 0.7 to 7.6 +/- 0.3%, P = 0.07), and basal hepatic glucose production (HGP) (P < 0.005). A positive correlation (r = 0.69, P < 0.05) between the declines in FPG and HGP was observed. Neither low-dose BI alone nor DSU alone reduced FPG, mean 24-h glucose, HbA1c, or basal HGP. High-dose (40 +/- 5 U/day) BI plus DSU further reduced the FPG ( 6.3 +/- 0.6 mmol/l), HbA1c (7.1 +/- 0.3%), mean 24-h plasma glucose, and basal HGP (all P < 0.05 vs. phase II).(ABSTRACT TRUNCATED AT 250 WORDS)[1]References
- Bedtime insulin/daytime glipizide. Effective therapy for sulfonylurea failures in NIDDM. Shank, M.L., Del Prato, S., DeFronzo, R.A. Diabetes (1995) [Pubmed]
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