急性胰升糖素反应与新诊断2型糖尿病长期缓解的关联
Acute glucagon response associated with the long-term remission of newly-diagnosed type 2 diabetes
目的 探讨静脉葡萄糖耐量试验中急性胰升糖素反应对短期胰岛素强化治疗诱导新诊断2型糖尿病长期缓解的影响.方法 10例初诊2型糖尿病患者经2周胰岛素泵强化治疗,并跟踪随访1年观察缓解情况.治疗前、后进行高胰岛素-正常葡萄糖钳夹试验测定葡萄糖输注率( GIR),静脉葡萄糖试验(IVGTT)测定胰升糖素和胰岛素并计算急性胰升糖素反应(AGR)和急性胰岛素反应(AIR).分析长期缓解组和未缓解组胰岛素强化治疗前后AGR变化的差异,探讨与病情缓解的关联.结果 (1)强化治疗1年缓解率为50% (5/10),长期缓解组治疗后GIR、AIR均较基线显著增加(P<0.01).(2)长期缓解组治疗前AGR显著高于未缓解组[自然对数(5.10±0.60对2.85±1.86),P<0.05],治疗后明显下降,低于未缓解组[0对自然对数(3.04±2.00),P<0.01].(3)Spearman相关分析显示,治疗前AGR,治疗后AGR下降值(治疗前一治疗后)与长期缓解显著正相关(均r=0.731,P=0.016).结论 治疗前AGR水平高,短期胰岛素强化治疗后AGR下降幅度大的新诊断2型糖尿病患者长期缓解可能性大,提示胰岛d细胞功能的恢复在诱导长期缓解中具有独特的地位.
更多Objective To investigate the role played by acute glucagon response in the short-term intensive insulin therapy induced long-term remission of newly-diagnosed type 2 diabetes.Methods Ten newly-diagnosed type 2 diabetic patients( 7 males,3 females) received intensive continuous subcutaneous insulin infusion( CSII )therapy for 2 weeks.Intravenous glucose tolerance test (IVGTT) and hyperinsulinemia euglycemia clamp test were performed before and after CSII.Glucose infusion rate ( GIR ),acute insulin response ( AIR ) and acute glucagon response (AGR) were assessed.Long-term remission was defined as good glycaemic control without any hypoglycaemic agent (fasting plasma glucose < 7.0 mmol/L 及 2 h postprandial glucose < 10 mmol/L) one year after CSII.Relationship between AGR and long-term remission were analyzed by one way ANOVA and Spearman correlation analysis.Results ( 1 ) Five of the ten patients achieved long-term remission in this study.GIR and AIR in the remission group were increased significantly after CSII compared with those before CSII [ GIR ( 5.39 ± 1.76 vs 2.02 ± 0.83 )mg · kg-1 ·min-1,AIR ( mean 54.1 vs mean 3.39 ) mU · L-1 · min,P<0.01 respectively ],however both of them were not associated with the remission.(2) AGR in the remission group was significantly higher than that in the non-remission group before CSII ( 5.10±0.60 vs 2.85 ± 1.86,P<0.05 ) and was decreased significantly after CSII.The mean of AGR after CSII was apparently lower in the remission group than that in non-remission group (0 vs 3.04±2.00,P<0.01 ).(3)Spearman analysis showed that AGR before CSII and its range of reduction after CSII were correlated with remission ( r for both were 0.731,P=0.016).Conclusion Higher level of AGR before CSII and greater reduction after CSII in the subjects with newly-diagnosed type 2 diabetes were significantly associated with long-term remission,suggesting that pancreatic α cells may play a unique role in the induction of remission of type 2 diabetes.
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