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谷氨酸脱羧酶抗体、蛋白酪氨酸磷酸酶抗体、锌转运体8抗体与自身免疫性甲状腺疾病的关系 被引量:6

Association of glutamic acid decarboxyase antibody, protein tyrosine phosphatase-2 antibody, zinc transporter 8 antibody and autoimmune thyroid disease
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摘要 目的探讨自身免疫性甲状腺疾病与谷氨酸脱羧酶抗体、蛋白酪氨酸磷酸酶抗体和锌转运体8抗体的关系。方法纳入2010年10月至2011年10月在南京医科大学第一附属医院内分泌科就诊的521例自身免疫性甲状腺疾病患者[男107例,女414例,年龄(41±14)岁]、153例非自身免疫性甲状腺疾病患者[男24名,女129例,年龄(50±14)岁]及健康志愿者102名[男52名,女50名,年龄(23±4)岁],应用放射免疫沉淀法检测谷氨酸脱羧酶抗体、蛋白酪氨酸磷酸酶抗体、锌转运体8抗体水平。采用t检验、x2检验或秩和检验进行数据统计。结果(1)自身免疫性甲状腺疾病患者谷氨酸脱羧酶抗体和锌转运体8抗体的阳性率分别为7.29%(38/521)和16.70%(87/521),高于正常对照者[均为0.98%(1/102),)(2值分别为5.794、17.374,均P〈0.05]和非自身免疫性甲状腺疾病患者[分别为2.14%(3/140)、9.93%(15/151),x2值分别为5.032、4.161,均P〈0.05]。自身免疫性甲状腺疾病患者蛋白酪氨酸磷酸酶抗体的阳性率[4.22%(22/521)]与正常对照者(0,)(2=3.311,P〉0.05)及非自身免疫性甲状腺疾病患者[2.14%(3/140),x。=1.312,P〉0.05]差异无统计学意义。(2)2个及2个以上胰岛自身抗体阳性的自身免疫性甲状腺疾病患者糖尿病的发生率高于胰岛自身抗体阴性者[21.43%(3/14)VS5.13%(20/390),Fisher精确概率检验,P〈0.05],仅1种胰岛自身抗体阳性的自身免疫性甲状腺疾病患者糖尿病的发生率与抗体阴性者差异无统计学意义[6.87%(9/131)VS5.13%(20/390),X2:0.566,P〉0.05]。(3)自身免疫性甲状腺疾病患者中,甲状腺过氧化物酶抗体高滴度(≥600U/m1)者任一胰岛自身抗体的阳性率均高于低滴度者[35.83%(43/120)vs22.93%(86/375),x2=7.851,P〈0.01]。结论甲状腺过氧化物酶抗体高滴度的自身免疫性甲状腺疾病患者易合并胰岛自身抗体阳性,尤其是锌转运体8抗体的阳性率较高,提示自身免疫性甲状腺疾病和自身免疫性糖尿病在免疫学发病机制上可能存在联系。 Objective To investigate the relationship of autoimmune thyroid disease (AITD) with islet autoantibodies, namely glutamic acid decarboxyase antibody (GADA) , protein tyrosine phosphatase-2 antibody (IA-2A) and zinc transporter 8 antibody (ZnT8A). Methods A total of 521 AITD patients (male 107, female 414, age (41 ± 14) y) , 153 non-autoimmune thyroid disease (nAITD) patients (male 24, female 129, age (50 ±14) y) and 102 healthy controls (male 52, female 50, age (23 ±4) y) were enrolled in this cross-sectional and case-control study. The levels of GADA, IA-2A and ZnTSA weredetected by radio immunoprecipitation assay according to international standards. Chi-square test or t test was used for data analysis. Results ( 1 ) The prevalence of GADA and ZnT8A in the AITD group was 7.29% (38/521) and 16. 70% (87/521), respectively, which was higher than that of the healthy controls (both 0. 98% (1/102) ; X2 values were 5. 794 and 17. 374, respectively; both P 〈 0. 05 ) and the nAITD group ( GADA 2. 14% (3/140), ZnT8A 9. 93% ( 15/151 ) ; X2 values were 5. 032 and 4. 161, respectively; both P 〈0. 05). The difference between IA-2A positive rate in the AITD group (4. 22% (22/521)) and the healthy controls (0, X2 =3. 311, P 〉0. 05) or nAITD (2. 14% (3/140), X2 = 1. 312, P 〉0. 05) was not statistically significant. (2) In the AITD group, patients with two or more islet autoantibodies positiveboth P 〈0. 05). The difference between IA-2A positive rate in the AITD group (4. 22% (22/521)) and the healthy controls (0, X2 =3. 311, P 〉0. 05) or nAITD (2. 14% (3/140), X2 = 1. 312, P 〉0. 05) was not statistically significant. (2) In the AITD group, patients with two or more islet autoantibodies positive had a higher incidence of diabetes mellitus than islet autoantibodies negative ones (21.43% (3/14) vs 5. 13 % (20/390) , Fisher test, P 〈 0. 05). In AITD patients, the prevalence of diabetes between one islet autoantibody positive (any of the three ) participants and islet autoantibodies negative ones was of no statistical significance (6.87% (9/131) vs 5.13% (20/390), X2 =0.566, P 〉0.05). (3) The prevalence of positivity for any of the three islet autoantibodies was higher in AITD patients with high titer (/〉600 U/ml) thyroid peroxidase antibody (TPOAb) than those with lower TPOAb titer (35.83% (43/ 120) vs 22. 93% (86/375) ,X2 =7. 851, P 〈0. 01 ), and so was for GADA ( 14. 17% (17/120) vs 4. 8% (18/375), X2 = 12. 138, P 〈0. 01). Conclusion AITD patients with high titer TPOAb may be prone to be islet autoantibodies positive, which indicates the association of AITD and autoimmune diabetes mellitus in the immunological pathogenesis.
出处 《中华糖尿病杂志》 CAS 2012年第3期144-149,共6页 CHINESE JOURNAL OF DIABETES MELLITUS
关键词 自身免疫性甲状腺疾病 糖尿病 胰岛自身抗体 Autoimmune thyroid disease Diabetes mellitus Met autoantibodies
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参考文献13

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同被引文献38

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