天津医药 ›› 2026, Vol. 54 ›› Issue (9): 962-966.doi: 10.11958/20253748

• 临床研究 • 上一篇    下一篇

CysLTs与NLRP3炎症小体通路在重症肺炎支原体肺炎患儿黏液栓形成中的作用及联合预警模型构建

孙长城1(), 武建霖2, 陈亦乔3, 滕艳妹1, 韩玉冰4, 刘镇瑜5   

  1. 1 沧州市人民医院儿科ICU(邮编061000)
    2 沧州市人民医院麻醉科(邮编061000)
    3 天津市第一中心医院儿科(邮编061000)
    4 沧州市人民医院影像科(邮编061000)
    5 沧州市人民医院儿科一区(邮编061000)
  • 收稿日期:2025-12-26 修回日期:2026-03-26 出版日期:2026-09-15 发布日期:2026-09-14
  • 作者简介:孙长城(1989),男,主治医师,主要从事儿科急危重症疾病方面研究。E-mail:15031725163@163.com
  • 基金资助:
    沧州市重点研发计划指导项目(20251102020)

Role of CysLTs and NLRP3 inflammasome pathways in mucous plug formation in children with severe Mycoplasma pneumoniae pneumonia and construction of a combined early-warning model

SUN Changcheng1(), WU Jianlin2, CHEN Yiqiao3, TENG Yanmei1, HAN Yubing4, LIU Zhenyu5   

  1. 1 Pediatric ICU, Cangzhou People's Hospital, Cangzhou 061000, China
    2 Department of Anesthesiology, Cangzhou People's Hospital, Cangzhou 061000, China
    3 Department of Pediatrics, Tianjin First Central Hospital 061000, China
    4 Department of Radiology, Cangzhou People's Hospital 061000, China
    5 Pediatric Ward 1, Cangzhou People's Hospital 061000, China
  • Received:2025-12-26 Revised:2026-03-26 Published:2026-09-15 Online:2026-09-14

摘要:

目的 探讨重症肺炎支原体肺炎(SMPP)患儿半胱氨酰白三烯(CysLTs)、核苷酸结合寡聚化结构域样受体蛋白3(NLRP3)与黏液栓形成的关联,构建并验证其联合预测模型的价值。方法 选取202例SMPP患儿,根据纤维支气管镜检查结果分为黏液栓组(54例)和非黏液栓组(148例)。比较2组一般基线资料、血清CysLTs水平及NLRP3炎症小体通路指标NLRP3、胱天蛋白酶(Caspase)-1。采用多因素Logistic回归分析筛选黏液栓形成的影响因素,并通过绘制受试者工作特征(ROC)曲线评估各指标及联合模型的预测效能。结果 与非黏液栓组比较,黏液栓组患儿PRISMⅢ评分、C反应蛋白(CRP)、CysLTs、NLRP3、Caspase-1升高,而动脉血氧分压与吸入氧浓度比值(PaO2/FiO2)降低(P<0.05)。多因素Logistic回归分析显示,血清CysLTs、NLRP3、Caspase-1、CRP水平升高以及PaO2/FiO2降低是影响SMPP患儿黏液栓形成的独立危险因素(P<0.05)。ROC曲线分析结果显示,上述5项指标联合预测模型的曲线下面积(AUC)为0.972(95%CI:0.947~0.996),敏感度与特异度分别为94.4%和93.9%,其预测效能优于任一单一指标。结论 血清CysLTs及NLRP3炎症小体通路激活、低氧合状态及高全身炎症负荷是SMPP患儿发生黏液栓的独立危险因素,基于此构建的联合预测模型具有优异的预测效能。

关键词: 肺炎, 支原体, 危重病, 黏液, NLR家族, 热蛋白结构域包含蛋白3, 半胱氨酸天冬氨酸蛋白酶1, 半胱氨酰白三烯, 儿童

Abstract:

Objective To investigate the association of cysteinyl leukotrienes (CysLTs) and NLRP3 inflammasome pathway activation with mucous plug formation in severe Mycoplasma pneumoniae pneumonia (SMPP) patients, and to develop/validate a combined predictive model. Methods A total of 202 children with SMPP were selected and divided into the mucus plug group (54 cases) and the non-mucus plug group (148 cases) based on the results of fiberoptic bronchoscopy. Baseline characteristics, serum CysLTs levels and NLRP3 inflammasome pathway components (NLRP3, caspase-1) were compared. Multivariate Logistic regression analysis was used to screen risk factors for mucous plug formation, and the predictive efficacy of each index and the combined model was evaluated by receiver operating characteristic (ROC) curve. Results Compared to controls, the mucous plug group showed significantly elevated serum CysLTs, NLRP3, Caspase-1, CRP levels and PRISM Ⅲ scores, with reduced partial pressure of oxygen in arterial blood/Fraction of inspired oxygen(PaO2/FiO2)(P<0.05). Multivariate Logistic regression analysis revealed that elevated serum levels of CysLTs, NLRP3, Caspase-1, CRP and decreased PaO2/FiO2 were independent risk factors for the formation of mucus plugs in children with SMPP (P<0.05). The results of the ROC curve analysis showed that the area under the curve (AUC) of the combined prediction model of the above five indicators was 0.972(95%CI:0.947-0.996), with a sensitivity of 94.4% and a specificity of 93.9%. The predictive efficacy of this model was superior to that of any single indicator. Conclusion Serum CysLTs and activation of the NLRP3 inflammasome pathway, hypoxia state and high systemic inflammatory load are independent risk factors for mucus plug formation in children with SMPP. The combined prediction model constructed based on these factors has excellent predictive performance.

Key words: pneumonia, mycoplasma, critical illness, mucus, NLR family, pyrin domain-containing 3 protein, caspase 1, CysLTs, child

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