糖化血红蛋白在糖代谢异常患者中的改变及其与血糖的关系

目的 探讨糖化血红蛋白(HbA1c)检测在不同糖代谢异常状态的临床价值.方法 选取254名受试者(其中男149人,女105人)进行口服糖耐量试验(OGTT)和HbA1c检测.根据OGTT结果分为正常糖耐量(NGT)、单纯空腹血糖受损(I-IFG))、单纯糖耐量受损(I-IGT)、IFG合并IGT(IFG/IGT)和糖尿病(DM)5组,通过单因素方差分析比较各组HbA1c值,对各组HbAlc与空腹血糖(FPG)和OGTT 2 h血糖(2hPG)进行线性相关和回归分析.结果 ①HbA1c水平(%,下同)DM组(7.41±1.94)明显高于其余4组(以上P均<0.01),I-IFG组(6.06±0.37)、I-IGT组(5.91±0.39)、IFG/IGT组(6.12±0.38)3组间差异无统计学意义(P>0.05),但分别明显高于NGT组(P<0.05).②DM组HbA1c分别与FPG(r=0.934,P<0.01)和2hPG(r=0.760,19<0.01)存在着明显的正相关,回归方程为:HbA1c=2.957+0.458(FPG)+0.05(2hPG);IFG/IGT组(r=0.326,P<0.01)、I-IGT组(r=0.254,P<0.05)HbA1c只与2hPG存在正相关;I-IFG组HbA1c只与FPG存在正相关(r=0.404,P<0.01);NGT组HbA1c与FPG(r=0.157)和2hPG(r=-0.006)均不存在相关性.结论 糖化血红蛋白水平能够正确地反映正常糖代谢、糖调节受损和糖尿病3种不同糖代谢状态的血糖水平,是区分3种糖代谢状态的有用指标.

Clinical Significance of HbA1c Level in Different Kinds of Glycometabolism Disorders

Objective To explore the clinical significance of glucosylated hemoglobin A1c (HbA1c) determination in different kinds of glycometabolism disorders. Methods 254 subjects(149 men,105 women) underwent an oral glucose tolerance test(OGTT) as well as HbA1c determination. According to the results of OGTT, all subjects were divided into five groups as follows: normal glucose tolerance(NGT), isolated impaired fasting glucose(I-IFG), isolated impaired glucose tolerance (I-IGT), IFG combined with IGT (IFG / IGT) and...