【摘要】 目的探讨外周血免疫球蛋白、血沉（erythrocyte sedimentation rate, ESR）、同型半胱氨酸（homocysteine,Hcy）与儿童中枢神经系统血管炎（central nervous system vasculitis,CNSV）病情程度的关系及对预后的影响。方法 选取2018年2月至2023年2月CNSV患儿103例作为研究组，另选取健康体检儿童103例作为对照组。比较2组外周血免疫球蛋白A(immunoglobulin A,IgA)、免疫球蛋白G(immunoglobulin G,IgG)、免疫球蛋白M(immunoglobulin M,IgM)、ESR、Hcy水平，评价各指标与CNSV病情程度[伯明翰血管炎疾病活动性评分（birmingham vasculitis disease activity score,BVAS）]的关系及其对预后的预测价值。结果 研究组患儿外周血IgA、IgG、IgM、ESR和Hcy水平高于对照组的健康儿童（P <0.05）；疾病活动期患儿BVAS评分、外周血IgA、IgG、IgM、ESR和Hcy水平高于疾病非活动期患儿（P <0.05）；外周血IgA、IgG、IgM、ESR和Hcy与CNSV患儿BVAS评分呈正相关（P <0.05）；随访6个月，失访2例。CNSV患儿中预后良好患儿76例，预后不良患儿25例。预后不良患儿病程长于预后良好患儿，BVAS评分、外周血IgA、IgG、IgM、ESR和Hcy水平高于预后良好患儿（P <0.05）；将其他因素校正前后，外周血IgA、IgG、IgM、ESR和Hcy均是CNSV患儿预后的独立影响因素（P <0.05）；外周血IgA、IgG、IgM、ESR和Hcy预测CNSV患儿预后的的曲线下面积（area under the curve,AUC）分别为0.747、0.808、0.841、0.839、0.746，最佳截断值分别为350.58 mg/dL、1 513.06 mg/dL、124.84 mg/dL、51.22 mm/h、13.66μmol/L；外周血IgA、IgG、IgM、ESR和Hcy联合预测CNSV患儿预后的AUC为0.943(95%CI:0.878～0.979)，敏感度为92.00%，特异度为93.42%，优于各指标单独预测。结论 外周血IgA、IgG、IgM、ESR和Hcy与CNSV病情程度呈正相关，异常高表达会增加预后不良风险，联合预测价值可靠。更多还原

【Abstract】 Objective To investigate the relationship between peripheral blood immunoglobulin,erythrocyte sedimentation rate(ESR),homocysteine(Hcy) and the severity of central nervous system vasculitis( CNSV) in children, as well as its impact on prognosis. Methods A total of 103 children with CNSV from February 2018 to February 2023 were selected as the study group,and 103 healthy children as the control group.The peripheral blood levels of immunoglobulin A(IgA),immunoglobulin G(IgG),immunoglobulin M(IgM),ESR and Hcy were compared between the 2 groups to evaluate the relationship between each index and the degree of CNSV disease [Birmingham vasculitis disease activity score( BVAS) ] and its predictive value for prognosis.Results The levels of peripheral blood IgA,IgG,IgM,ESR and Hcy in the study group were higher than those in the control group of healthy children(P < 0.05); the BVAS scores and the levels of peripheral blood IgA,IgG,IgM,ESR and Hcy in children with active disease were higher than those in children with inactive disease(P < 0.05);the levels of peripheral blood IgA,IgG,IgM,ESR and Hcy were positively correlated with the BVAS scores in children with CNSV(P < 0.05); two cases were lost to follow-up after 6 months. Among the children with CNSV,76had good prognosis and 25 poor prognosis. The levels of peripheral blood IgA,IgG,IgM,ESR and Hcy in children with poor prognosis were higher than those in children with good prognosis(P < 0.05); before and after correcting for other factors,peripheral blood IgA,IgG,IgM,ESR and Hcy were all independent factors affecting the prognosis of children with CNSV(P < 0.05); the area under curve(AUC) of peripheral blood IgA,IgG,IgM,ESR and Hcy for predicting the prognosis of children with CNSV was 0.747,0.808,0.841,0.839,and 0.746,respectively,with optimal cutoff values of 350.58 mg/dL,1 513.06 mg/dL,124.84 mg/dL,51.22 mm/h,and 13.66 μmol/L,respectively; the AUC of peripheral blood IgA,IgG,IgM,ESR and Hcy for jointly predicting the prognosis of children with CNSV was 0.943(95%CI 0.878-0.979),with a sensitivity of 92.00% and a specificity of 93.42%,which was superior to individual prediction of each indicator. Conclusion Peripheral blood IgA,IgG,IgM,ESR and Hcy are positively correlated with the severity of CNSV. Abnormally high expression increases the risk of poor prognosis,and the combined predictive value is reliable.更多还原