天疱疮患者抗桥粒芯糖蛋白与疾病相关性分析

目的：探讨酶联免疫吸附测定（ELISA ）检测血清桥粒芯糖蛋白（Dsg ）1和Dsg3在天疱疮诊断及治疗中的应用价值。方法选择2014年1～12月在该科确诊为天疱疮的患者47例（观察组），同期排除天疱疮的患者52例为对照组。间接免疫荧光法（IIF）检测抗表皮棘细胞桥粒抗体，ELISA检测Dsgl、Dsg3；分析其与天疱疮病情的相关性。结果 ELISA法的敏感性为95．74％，特异性为92．31％。IIF法敏感性为93．62％，特异性为86．54％。二者比较差异无统计学意义（P＞0．05）。30例寻常型天疱疮患者16例Dsg1、Dsg3均阳性，8例红斑型和5例落叶型天疱疮患者均只有Dsg1阳性，2例增殖型天疱疮Dsg1、Dsg3均为阳性。寻常型和增殖型天疱疮Dsg1、Dsg3滴度分别为130．85±86、112．30±85．05，疾病活动性评分（5．10±1．86）分，相关系数分别为 r＝0．476（P＝0．008）、r＝0．816（P＝0．001）。落叶型和红斑型天疱疮Dsg1滴度142．59±78．52，疾病活动评分平均为（2．77±0．92）分，r＝0．800，P＝0．001。结论 ELISA检测Dsg1、Dsg3敏感性、特异性高，有助于天疱疮的诊断及病情严重程度的评价。

Analysis on relationship between serum anti-desmoglein antibodies and disease in patients with pemphigus

Objective To investigate the application value of ELISA for detecting the serum anti desmoglein (Dsg) 1 and Dsg 3 in the diagnosis and treatment of pemphigus .Methods Forty‐seven patients with pemphigus in our hospital from January to De‐cember 2014 were selected as the observation group and contemporaneous 52 patients with excluding pemphigus were selected as the control group .The Dsg antibodies were detected by using indirect immunofluorescence method and Dsg 1 and Dsg3 were deter‐mined by ELISA ;their correlation with pemphigus characteristics was analyzed .Results The sensitivity and specificity of ELISA for detecting anti‐Dsg antibodies were 95 .74% and 92 .31% respectively ,while which of IIF were 93 .62% and 86 .54% respective‐ly ,showing no statistically significant difference between the two test methods (P>0 .05) .In 30 cases of pemphigus vulgaris ,16 ca‐ses (16/30) were positive Dsg1 and Dsg 3 ,8 cases of pemphigus erythematosus and 5 cases pemphigus foliaceus were positive Dsg1 only ,and 2 cases of pemphigus vegetans were both positive Dsgl and Dsg3 .The Dsgl and Dsg3 titers of pemphigus vulgaris and pemphigus vegetans were 130 .85 ± 86 and 112 .30 ± 85 .05 ,respectively ,and the disease activity score was (5 .10 ± 1 .86) points ,the correlation coefficient(r)=0 .476(P=0 .008) ,r=0 .816(P=0 .001) ,respectively .The Dsgl titer of pemphigus erythematosus and pemphigus foliaceus were 142 .59 ± 78 .52 ,and the disease activity score was (2 .77 ± 0 .92) points(r=0 .800 ,P=0 .001) .Conclu‐sion ELISA for detecting Dsg1 and Dsg3 has high sensitivity and specificity ,and is conducive to the diagnosis of pemphigus and e‐valuation of disease severity .