成人隐匿性自身免疫糖尿病实验室诊断的临床意义

Military Medical Journal of South China(2013)

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Abstract
目的探讨临床初诊为2型糖尿病(type 2 diabetes mellitus,T2DM)患者中成人隐匿性自身免疫糖尿病(latent autoimmune diabetes in adult,LADA)的患病率及与自身抗体的关系。方法对1221例临床初诊为T2DM患者采用酶联免疫吸附法(enzyme-linked immunosorbent assay,ELISA)测定谷氨酸脱羧酶抗体(glutamic acid decarboxylase antibody,GAD-Ab)和酪氨酸磷酸酶抗体(tyrosine phosphatase antibody,IA2-Ab)水平,了解LADA患病率并分析其临床特征。结果 LADA检出率为8.27%(101/1221),其中GAD-Ab和IA2-Ab的阳性检出率分别为5.57%和0.90%。两种抗体阳性检出率在25~40岁年龄段最高,之后抗体阳性率随发病年龄的增加而下降。抗体阳性组患者空腹C肽及餐后2 h C肽值均明显低于抗体阴性组患者。结论自身抗体阳性的T2DM患者存在明显的胰岛功能损伤,早期检出LADA对指导治疗及改善预后具有重要意义。
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Key words
Glutamic acid decarboxylase,Protein tynosine phosphatase,Autoantibody,Diabetes
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