血浆激肽释放酶水平与成人隐匿性自身免疫性糖尿病的关系

目的：研究血浆激肽释放酶（KLKB1）在成人隐匿性自身免疫性糖尿病（LADA）、经典1型糖尿病（T1DM）、2型糖尿病（T2DM）和健康成人中的水平，并结合其他指标分析其与LADA的关系。方法分别检测LADA组、T1DM组、T2DM组、健康对照组（NC组）血浆样本中KLKB1、糖化血红蛋白（HbA1c）、空腹血糖（FPG）、餐后2h血糖（2hPG）、空腹C肽（FCP）、餐后2hC肽（2hCP）、谷氨酸脱羧酶抗体（GADA）等指标，并对检测结果进行统计学分析。结果LADA组与其他各组在FPG（T2DM组除外）、2hPG、HbA1c、FCP、2hCP指标方面差异有统计学意义（P＜0．05）。LADA组与其他各组（T1DM组除外）GADA的差异有统计学意义（P＜0．05）；KLKB1在LADA组血浆中的含量明显高于T2DM组和NC组，差异有统计学意义（P＜0．05）；KLKB1与FCP、HbA1c、FPG、2hPG相关（P＜0．05），而与年龄、病程、2hCP无关（P＞0．05）。ROC曲线进一步分析显示，单独应用KLKB1对LADA进行诊断或鉴别诊断具有一定的局限性。结论KLKB1对判断LADA发病风险和早期诊断LADA有一定意义，可在LADA高危人群中结合其他指标进行LADA的筛选和监控。

The level of plasma prekallikrein and its correlation with latent autoimmune diabetes in adults

Objective To investigate the plasma expression of plasma prekallikrein(KLKB1)in latent autoimmune diabetes in a‐dults(LADA),type1diabetes(T1DM),type2diabetes(T2DM)andhealthypeople,anditsrelationshipwithLADAincombination with other indicators .Methods Among the four groups ,KLKB1 ,glycosylated hemoglobin(HbA1c) ,fasting blood glucose(FPG) ,2 h postprandial plasma glucose(2 h PG) ,Fasting c‐peptide(FCP) ,2 h postprandial C peptide(2 h CP) ,and glutamic acid decarboxy‐lase antibody(GADA)were detected respectively .And the detection results were analyzed by statistics .Results By comparison , there were statistically significant difference between LADA group and other groups on FPG(except for T2DM group) ,2 h PG , HbA1c ,FCP and 2 h CP(P< 0 .05) .And except for T1DM group ,there was statistically significant difference between LADA group and other groups on GADA ,too(P<0 .05) .The plasma expression of KLKB1 in LADA was significantly higher than those in T2DM group and NC group(P<0 .05) .The levels of KLKB1 was related with FCP、HbA1c、FPG、2 h PG(P<0 .05) ,and it was not related with age ,course ,and 2 h CP(P>0 .05) .Receiver operating characteristic (ROC) showed that only using KLKB1 to di‐agnose LADA had its limitation .Conclusion KLKB1 could be used as a clinical indicator to predict the onset of LADA to a certain degree .We could screen for LADA by using KLKB1 and other indicators in people at high risk .