摘要目的 探讨粒细胞缺乏(粒缺)和非粒细胞缺乏(非粒缺)的脓毒症患儿细胞因子特点及与预后的关系.方法 138例诊断为脓毒症的患儿,根据外周血中性粒细胞绝对计数,分为粒缺组、非粒缺组,根据有无脓毒性休克,分为休克组、非休克组,分别分析各组炎性指标(CRP、PCT)、Th1/Th2细胞因子(IL-2、IL-4、IL-6、IL-10、TNF-α、INF-γ)、PRISM-Ⅲ评分及治疗转归.结果 1)138例脓毒症患儿,64例为粒缺,74例为非粒缺,粒缺组PRISM-Ⅲ评分显著高于非粒缺组(P=0.048),两组患儿的病死率差异无统计学意义(P=0.4),粒缺组住院时间显著延长(P=0.02).粒缺组CRP、IL-6、IL-10显著高于非粒缺组(P=0.001;P=0.001;P=0.032),粒缺组TNF-α显著低于非粒缺组(P=0.032).2)在64例粒缺脓毒症患儿中有23例为脓毒性休克,41例非脓毒性休克,休克组PRISM-Ⅲ显著高于非休克组(P=0.001),休克组病死率(10/23,43.5％)显著高于非休克组(1/41,2.4％)(P=0.001).休克组的CRP、PCT、IL-6、IL-10、TNF-α显著高于非休克组(P=0.001;P=0.001;P=0.001;P=0.005;P=0.019),ROC曲线分析,IL-6曲线下面积为0.80,Cut-off值为315.38 pg/mL,IL-10曲线下面积为0.80,Cut-off值为45.18 pg/mL,TNF-α曲线下面积为0.85,Cut-off值为1.95 pg/mL.3)在74例非粒缺脓毒症患儿中,19例为脓毒性休克,55例非脓毒性休克,休克组PRISM-Ⅲ显著高于非休克组(P=0.022),两组病死率比较差异无统计学意义(P=0.3).休克组IL-10显著高于非休克组(P=0.015).4)对42例脓毒性休克的患儿分析,23例为粒缺组,19例为非粒缺组,粒缺组PRISM-Ⅲ评分显著高于非粒缺组(P=0.005),粒缺组病死率(47.8％)和非粒缺(31.6％)差异无统计学意义(P=0.29).粒缺组CRP、PCT、IL-6、IL-10因子显著高于非粒缺组(P=0.001;P=0.001;P=0.001;P=0.035),两组TNF-α差异无统计学意义(P=0.57).5)分析96例非脓毒性休克的患儿,41例为粒缺组,55例为非粒缺组,两组PRISM-Ⅲ评分差异无统计学意义(P=0.6),非粒缺组病死率(20％)显著高于粒缺组(2.4％)(P=0.02).粒缺组CRP、IL-6显著高于非粒缺组(P=0.005;P=0.033),粒缺组TNF-α显著低于非粒缺组(P=0.007).结论 合并粒缺的脓毒症患儿病情严重,治疗时间长.粒缺患儿发展为脓毒性休克时病死率显著增高,其IL-6、IL-10、TNF-α也显著升高.IL-6、IL-10、TNF-α可以帮助预测脓毒症患儿的预后.

abstractsObjective To explore the characteristics and value for predicting prognosis of cytokines in septic children with or without neutropenia.Methods Totally 138 septic children were divided into the neutropenia and non-neutropenia groups according to absolute neutropenic count.Septic children were divided into the shock and non-shock groups according to circulation function and organ perfusion.The levels of C-reactive protein,procalcitonin,cytokines,PRISM-Ⅲ and clinical outcomes were analyzed between the relative groups.Results (1) Totally 138 septic children were recruited,64 with neutropenia and 74 without neutropenia.The level of PRISM-Ⅲ of the neutropenia group was significantly higher than that of the non-neutropenia group (P=0.048).Mortality showed no significant difference between the two groups,but hospital stay in the neutropenia group was longer than that in the non-neutropenia group.The levels of C-reactive protein,IL-6,and IL-10 ihe neutropenia group were significantly higher than those of the non-neutropenia group (P=0.001;P=0.001;P=0.032).The level of TNF-α in the neutropenia group was significantly lower than that of the non-neutropenia group (P=0.032).(2)Among the 64 septic children with neutropenia,23 were combined with shock.The PRISM-Ⅲ level of the shock group was significantly higher than that of the non-shock group (P=0.001).The mortality of the shock group (43.5％,10/23) was significantly higher than the non-shock group (2.4％,1/41) (P=0.001).C-reactive protein,procalcitonin,IL-6,IL-10 and TNF-α in the shock group elevated obviously than those in the non-shock group (P=0.001;P=0.001;P=0.001;P=0.005;P=0.019).The area under receiver operating characteristic curve was 0.8 for IL-6 (cut-offvalue 315.38 pg/mL),0.8 for IL-10 (cutoff value 45.18 pg/mL),and 0.85 for TNF-α (cut-off value 1.95 pg/mL).(3) Among the 74 septic children without neutropenia,19 were combined with shock The PRISM-Ⅲ level of the shock group was significantly higher than that of the non-shock group (P=0.022).There was no significant difference of mortality between the two groups (P=0.3).IL-10 level in the shock group elevated obviously than that in the non-shock group (P=0.015).(4) Among the 42 children with sepsis shock,23 were combined with neutropenia.The PRISM-Ⅲ level of the neutropenia group was significantly higher than that of the non-neutropenia group (P=0.005).There was no significant difference of mortality between the two groups (P=0.29).The levels of C-reactive protein,procalcitonin,IL-6 and IL-10 in the neutropenia group were significantly higher than those in the non-neutropenia group (P=0.001;P=0.001;P=0.001;P=0.035).There was no difference of TNF-α level between the two groups.(5) Among the 96 children without sepsis shock,41 were combined with neutropenia.No difference of PRISM-Ⅲ level was observed between the neutropenia and nonneutropenia groups.The mortality of the neutropenia group was significantly lower than that in the non-neutropenia group (2.4％ vs 20％,P=0.02).The levels of C-reactive protein and IL-6 in the neutropenia group were significantly higher than those in the non-neutropenia group (P=0.005;P=0.033).The TNF-α level was significantly lower than that in the non-neutropenia group (P=0.007).Conclusions Compared to children without neutropenia,septic children combined with neutropenia have longer hospital stay,and septic shock children combined with neutropenia have higher mortality,and levels of IL-6,IL-10 and TNF-α were also significantly increased.The levels of IL-6,IL-10 and TNF-α can help to predict prognosis of children with sepsis.