酶法测定糖化血清白蛋白的初步评价

目的评估糖化血清白蛋白(GA)作为反映近期血糖控制总体水平的指标在糖尿病人群中的临床应用意义。方法对2006年5月～11月本院收治的445例2型糖尿病患者,检测空腹血糖(FPG)、餐后2小时血糖(P2hBG)、糖化血红蛋白(HbA1c)等指标,同时应用液态酶法测定GA,并行动态血糖监测系统(CGMS)监测。对GA与各监测指标的相关性进行分析。结果①对445例患者的相关性分析显示,GA与HbA1c具有良好的相关性(r=0.818,P<0.01);GA与FPG、P2hBG以及CGMS血糖平均值(MBG)呈正相关(r=0.473、0.409和0.531,P均<0.01)。②HbA1c>7.5%、6.5%≤HbA1c≤7.5%以及HbA1c<6.5%患者GA与HbA1c的相关系数r分别为0.678(P<0.01)、0.451(P<0.05)和0.151(P>0.05)。结论GA与HbA1c具有良好的相关性,尤其表现于长期血糖控制欠佳的患者。GA与长期血糖控制状况的相关性大于其与点时血糖或三日平均血糖水平的相关性。

Primary assessment of enzymatic measurement of glycated albumin

Objective To evaluate the clinical significance of glycated albumin(GA),a parameter in reflection of recent glycemic control in patients with diabetes mellitus. Methods Four hundred and forty-five patients with type 2 diabetes mellitus who were hospitalized in our hospital from May to November 2006 were enrolled into the study.The fasting plasma glucose(FPG),postprandial 2-hour blood glucose(P2hBG) and glycated hemoglobin(HbA1c) were measured,the enzymatic measurement of GA was conducted and the CGMS was performed.The correlation between GA and the other parameters monitored was analysed. Results The correlation analysis indicated that GA was well correlated with HbA1c(r=0.818,P<0.01).GA was positively correlated with FPG,P2hBG and mean blood glucose(MBG)detected by CGMS(r=0.473,0.409 and 0.531,P<0.01 for all).The correlation coefficient (r) was 0.678(P<0.01),0.451(P<0.05)and 0.151(P>0.05),respectively for those with HbA1c more than 7.5%,between 6.5% and 7.5%,and less than 6.5%. Conclusion GA is well correlated with HbA1c,especially in those with poor glycemic control for a long time.The correlation between GA and long-term glycemic control is stronger than that between GA and instant plasma glucose or MBG in three days.