Graves病药物治疗停药复发相关因素分析

目的 探讨甲状腺刺激性抗体(TSAb)水平和甲状腺体积等相关因素对Graves病患者抗甲状腺药物治疗停药后复发的预测价值.方法 71例Graves病患者经抗甲状腺药物正规治疗(2.8±1.4)年后停药,随访(22±6.0)个月.对停药后复发与未复发组的年龄、性别及停药时的TSAb活性、甲状腺体积和甲状腺功能指标等进行分析比较.应用表达重组人促甲状腺激素受体的人胚肾(HEK-hTSHR)细胞测定TSAb活性.结果 71例患者随访期间有11例(15.5%)复发,治疗停药时TSAb阳性患者复发率(42.9%,6/14)显著高于阴性患者(8.8%,5/57,X2=9.97,P<0.01).停药时甲状腺正常体积、Ⅰ度肿大、Ⅱ度肿大复发比率分别为6.25%、12.2%、35.7%.复发组患者停药时TSAb活性、阳性率以及甲状腺体积均显著高于未复发组(P<0.05或P<0.01).结论 Graves病患者抗甲状腺药物治疗终止时TSAb活性和甲状腺大小是Graves病停药后复发的有效预测因子.

Related factors in predicting relapse of Graves' disease after treatment with antithyroid drugs

Objective To explore the value of thyroid-stimulating antibody(TSAb) and degree of goiter in predicting the outcome of Graves'disease after antithyroid drug treatment. Methods Seventy-one patients with Graves'disease were given antithyroid drugs for (2. 8±1. 4)years and then followed up for(22±6.0)months.Finally,age,gender,thyroid function,TSAb and goiter size at the time of drug withdrawal were compared between the relapsed and relieved groups. TSAb was measured in all patients by using HEK-hTSHR cells. Results Eleven of 71 patients relapsed during the follow-up after drug withdrawal. The relapse rate (42. 9% ,6/14)in patients with positive TSAb was significantly higher than that (8.8%, 5/57) in patient with negative TSAb (X2 = 9.97, P<0.01). The relapse rates in patients with normal size thyroid, Ⅰ degree goiter,Ⅱ degree goiter were 6.25%, 12.2%,35.7% respectively. TSAb activity, positive rate and goiter size of the relapsed patients at the time of drug withdrawal were significantly higher than those of relieved patients (P<0.05 or P<0. 01). Conclusion TSAb activity and goiter size at the time of drug withdrawal are two effective prognostic markers of relapse in Graves' disease treated with antithyroid drugs.