摘要目的 研究56例天疱疮患者疾病严重程度和桥粒芯糖蛋白1(Dsg1)和桥粒芯糖蛋白3(Dsg3)酶联免疫吸附试验(ELISA)指数之间的关系,探讨Dsg ELISA指数在不同型别天疱疮中转归的规律.方法 用ELISA测定36例寻常型天疱疮和20例落叶型天疱疮患者治疗前、病情缓解且糖皮质激素开始减量时、糖皮质激素减量至相当于初始量1/2时、维持治疗开始时以及随诊2年时体内Dsg1和Dsg3 ELISA指数.结果 Dsg ELISA指数与天疱疮疾病活动度相关,在疾病缓解时,Dsg ELISA指数下降,与治疗前差异均有统计学意义(P＜0.01).在患者病情稳定使用维持量糖皮质激素、疗程到2年时,落叶型天疱疮中10例(50％)、寻常型天疱疮中7例(19.4％)Dsg1 ELISA指数出现阴性,只有1例(2.7％)寻常型天疱疮患者Dsg3 ELISA指数阴性.结论 Dsg ELISA指数和天疱疮患者疾病严重程度相关,可能是一种评估病情的有用指标,可对治疗的有效性作出评价.

abstractsObjective To investigate the relationship between disease severity and enzyme-linked immunosorbent assay (ELISA) index values of anti-desmoglein (Dsg) 1 and-Dsg3 antibodies in 56 patients with pemphigus,and to characterize fluctuations in anti-Dsg1 and-Dsg3 antibodies in different forms of pemphigus.Methods Fifty-six patients with pemphigus (including 36 cases of pemphigus vulgaris (PV) and 20 cases of pemphigus foliaceus (PF)) were enrolled in this study.Blood samples were obtained from these patients before treatment and at the following four time points:when the condition was relieved and the taper of glucocorticoids began,the dose of glucocorticoids was tapered to half of their initial dose,the maintenance treatment started,and when the duration of maintenance treatment reached two years.ELISA was performed to determine the levels of anti-Dsg1 and-Dsg3 antibodies in these serum samples.Spearman correlation analysis was carried out to assess the relationship between disease severity and ELISA index values,and independent sample's t test to compare the levels of anti-Dsg antibodies among these time points.Results The severity of pemphigus was correlated with anti-Dsg antibody ELISA index values.Both anti-Dsg1 and anti-Dsg3 ELISA index values were significantly reduced at the remission of pemphigus compared with those before treatment (all P ＜ 0.01).At the end of the two-year maintenance treatment,10 (50％) patients with PF and 7 (19.4％) patients with PV became negative for anti-Dsg1 ELISA,whereas only 1 (2.7％) patient with PV became negative for anti-Dsg3 ELISA.Conclusions Anti-Dsg antibody ELISA index value is correlated with disease severity in patients with pemphigus,which may serve as a useful marker for assessing disease severity and activity as well as evaluating therapeutic efficacy.