磺脲类继发失效糖尿病患者加用胰岛素疗效及胰岛B细胞功能变化

目的探讨磺脲类药物继发性治疗失效的2型糖尿病患者加用甘精胰岛素(IG)或中效精蛋白人胰岛素(NPH)后的疗效及胰岛B细胞功能的变化。方法2004-05—2004-11对上海市第一人民医院52例磺脲类药物继发性失效的糖尿病患者,改用格列吡嗪控释片,并分别睡前注射IG(20例)或NPH(32例),观察16周内多点空腹血糖变化及16周前后HbA1c、餐后血糖、空腹和餐后C肽。结果两组均有显著的降血糖效果,且疗效、所用剂量相近,但IG组低血糖事件明显少于NPH组,且治疗后血清C肽水平明显升高,而NPH组C肽无变化。结论睡前注射甘精胰岛素或中效人胰岛素对磺脲类继发性失效者均有较高的达标率,联用甘精胰岛素可改善胰岛B细胞功能。

Effect of treatment and change of islet function by adding insulin glargine on patients with second failure of sulfonylureas

Objective To investigate the effect of insulin glaring(IG)and neutral protamine hagedorn(NPH)on metabolic control and islet cell function in type 2 diabetic patients who secondly failed to sulfonylureas(SU)treatment.Methods Fifty-two diabetic patients with second SU failure were studied in our hospital during May,2004 to Nov,2004,and they were divided into two groups:twenty treated with glipizide extended release tablets(GERT)plus IG injection,while thirty-two with GERT plus NPH.Fasting and postprandial blood glucose,HbA_1c,fasting and postprandial C-peptide were determined in all patients at different following points.Results Blood glucose decreased obviously and similarly in two groups;however,hypoglycemia occurred less in IG group.Interestingly,fasting and postprandial C-peptide significantly increased in IG group,but didn't change in NPH group.Conclusion Combination treatment with IG or NPH has good effect on metabolic control in second SU failure patients;and moreover,IG improves B-cell function.