活动性梅毒患者梅毒血清特异性抗体水平与体内免疫球蛋白水平的相关性研究

Study on correlation between treponema pallidum specific antibodies levels of syphilis and immunoglobulin levels in active syphilis patients

目的:探究活动性梅毒患者梅毒血清特异性抗体水平(TPAb)与体内免疫球蛋白A/E/M/G(IgA/E/M/G)及IgG亚型的相关性,为临床梅毒的综合诊疗与预后评估提供依据。方法:选取2023年就诊于苏州大学附属第一医院的活动性梅毒患者,根据梅毒甲苯胺红不加热血清试验(TRUST)分为1∶4+与1∶16+两组,另选取健康对照组,均进行化学发光微粒子免疫检测(CMIA)测定TPAb,免疫比浊法测定IgA/E/M/G及IgG1/2/3/4含量。结果:本次共纳入活动性梅毒患者206例(男性125例,女性81例),年龄(46.05±19.58)岁。相对健康对照组,可见活动性梅毒组IgG2降低,TPAb、IgA/E/M/G和IgG1/3/4水平均升高,其中TPAb、IgE、IgG1/2/3水平差异具有统计学意义(P<0.05)。相比于健康对照组,TRUST 1∶4+组TPAb、IgE、IgG2差异具有统计学意义,TPAb与IgE、IgG2/4存在相关性;而TRUST 1∶16+组TPAb、IgA/E/M/G、IgG1/2/3水平差异均具有统计学意义,TPAb与IgE、IgG4存在相关性(P<0.05)。另外,TRUST阳性组之间的TPAb、IgG和IgG1/3水平差异具有统计学意义(P<0.05)。结论:不同TRUST滴度的活动性梅毒患者TPAb与Ig水平存在较大差异,TPAb联合Ig可用于监测梅毒活动性强弱,IgA/M/G及IgG1/3可能成为候选生物标志物。

Objective:To investigate the correlation between the level of treponema pallidum specific antibodies(TPAb)and immunoglobulin A/E/M/G(IgA/E/M/G)and IgG subtypes in active syphilis patients,so as to provide a basis for the comprehensive diagnosis and treatment and prognosis evaluation of clinical syphilis.Methods:Active syphilis patients admitted to the First Affiliated Hospital of Soochow University in 2023 were divided into 1∶4+and 1∶16+groups according to the syphilis toluidine red unheated serum test(TRUST),and healthy control group were selected for the detection of TPAb by chemiluminescence microparticle immunoassay(CMIA).The contents of IgA/E/M/G and IgG1/2/3/4 were determined by immunoturbidimetry.Results:A total of 206 patients with active syphilis(125 males and 81 females)aged(46.05±19.58)years were included in this study.Compared with the healthy control group,IgG2 was decreased and TPAb,IgA/E/M/G and IgG1/3/4 levels were increased in the active syphilis group,with statistically significant differences in TPAb,IgE and IgG1/2/3 levels(P<0.05).Compared with the healthy control group,TRUST 1∶4+group had statistical differences in TPAb,IgE and IgG2,and TPAb was significantly correlated with IgE and IgG2/4.The levels of TPAb,IgA/E/M/G and IgG1/2/3 in TRUST 1∶16+group were statistically significant,and TPAb was significantly correlated with IgE and IgG4(P<0.05).In addition,there were significant differences in TPAb,IgG and IgG1/3 between the two positive groups(P<0.05).Conclu⁃sion:The levels of TPAb and Ig in active syphilis patients with different TRUST titers are significantly different.TPAb combined with Ig can be used to monitor the strength of syphilis activity,IgA/M/G and IgG1/3 may be candidate biomarkers.