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  • Title: [The associations of HLA-DQB1 gene with onset age and autoantibodies in type 1 diabetes].
    Author: Liu CL, Yu YR, Liu H, Zhang XX, Zhao GZ.
    Journal: Zhonghua Yi Xue Yi Chuan Xue Za Zhi; 2004 Aug; 21(4):368-71. PubMed ID: 15300636.
    Abstract:
    OBJECTIVE: To evaluate the associations of human leukocyte antigen (HLA) DQB1 gene with onset age and autoantibodies in type 1 diabetes mellitus(T1DM) in Chinese Han population in Sichuan area. METHODS: Forty-six type 1 diabetic patients and 52 healthy control subjects were involved in this study. HLA-DQB1 typing was performed by polymerase chain reaction-sequence specific primer(PCR-SSP). Glutamic acid decarboxylase antibody (GADA) and islet cell antibody (ICA) were qualitatively analyzed by enzyme linked immunosorbent assay (ELISA). RESULTS: The positive rate of DQB1*0201 was higher in T1DM than in controls (OR=18, P<0.005), but those of DQB1*0601, *0602 were higher in controls than in T1DM(OR=0.07, 0.31 respectively, both P<0.05).The positive rate of DQB1*0602 in type 1 diabetic patients with onset age>or=20 years was higher than that in the patients with onset age <20 years (P<0.05). GADA was more frequent in DQB1*0201(+) patients than in DQB1*0201 (-) patients (P<0.025). CONCLUSION: The findings show that DQB1*0201 is susceptible to T1DM, whereas DQB1*0601, *0602 are protective in Chinese Han population in Sichuan area. DQB1*0602 may delay the onset of T1DM. The positive rate of DQB1*0201 correlates positively with that of GADA.
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