Prediction analysis of risk factors and TSP1, FOXP 3 levels in children with severe Mycoplasma pneumonia
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摘要:
目的 在重症支原体肺炎患儿发病过程中,会有一定比例的患儿出现塑形性支气管炎(PB)这种严重的并发症。探究其发病机制,分析凝血酶敏感蛋白1(TSP1)、叉状头螺旋转录因子3(FOXP3)水平对塑形性支气管炎的预测价值。 方法 选取2020年6月—2024年6月新疆医科大学第一附属医院儿内一科收治的320例重症支原体肺炎患儿作为研究对象,按照纤维支气管镜下是否可见塑形性支气管炎,将其分为PB组(120例)和非PB组(200例)。采用单因素及多因素分析重症支原体肺炎患儿塑形性支气管炎发生的危险因素,采用ELISA检测TSP1、FOXP3水平,采用ROC曲线评估TSP1、FOXP3对塑形性支气管炎的预测价值。 结果 多因素logistic回归分析显示,发热持续时间≥8 d、存在呼吸急促、存在胸腔积液、白细胞计数≥8.10×109/L、中性粒细胞比例≥68.10%、淋巴细胞比例<30%、CRP≥40 mg/L、乳酸脱氢酶(LDH)≥450 U/L均为重症支原体肺炎患儿塑形性支气管炎发生的危险因素(P < 0.05)。与非PB组TSP1[(54.68±9.00)ng/mL]、FOXP3(3.08±0.51)表达比较,PB组TSP1[(66.71±12.17)ng/mL]、FOXP3(3.92±0.69)表达升高(P < 0.05)。ROC曲线结果显示,与TSP1、FOXP3单项诊断对比,联合诊断AUC值显著高于单项(P < 0.05)。 结论 发热持续时间、呼吸急促、胸腔积液、WBC、PLT、淋巴细胞比例、CRP、LDH等均为导致重症支原体肺炎患儿塑形性支气管炎发生的风险因素,TSP1、FOXP3对预测塑形性支气管炎的发生有较高的价值。 Abstract:Objective In the onset process of children with severe Mycoplasma pneumonia, a certain proportion of children will have plastic bronchitis (PB). The aim is to explore the pathogenesis and analyzed the predictive value of thrombine-sensitive protein 1 (TSP1) and forked head spiral transcription factor 3 (FOXP3) levels for plastic bronchitis. Methods A total of 320 children with severe Mycoplasma pneumonia admitted to the First Affiliated Hospital of Xinjiang Medical University from June 2020 to June 2024 were selected and divided into PB group (120 cases) and non-PB group (200 cases). Univariate and multivariate factors were used to analyze the risk factors of PB in children with severe Mycoplasma pneumonia. TSP1 and FOXP3 levels were measured by ELISA. ROC evaluated the predictive value of TSP1 and FOXP3 for plastic bronchitis. Results Multivariate logistic regression analysis showed that fever duration ≥8 d, tachypnea, pleural effusion, white blood cell count ≥8.10×109/L, neutrophil ratio ≥68.10%, lymphocyte ratio < 30%, CRP ≥40 mg/L, LDH ≥450 U/L were the risk factors for PB in children with severe Mycoplasma pneumonia (P < 0.05). Compared with the non-PB group, the expressions of TSP1 [(54.68±9.00) ng/mL] and FOXP3 (3.08±0.51) were increased in PB group [(66.71±12.17) ng/mL and 3.92±0.69, P < 0.05]. ROC results showed that compared with the single diagnosis of TSP1 and FOXP3, the combination of the two had higher diagnostic value (P < 0.05). Conclusion The duration of fever, tachypnea, pleural effusion, white blood cell count, neutrophil ratio, lymphocyte ratio, CRP and LDH are risk factors for plastic bronchitis in children with severe Mycoplasma pneumonia. TSP1 and FOXP3 have high value in predicting plastic bronchitis. -
表 1 重症支原体肺炎患儿塑形性支气管炎发生的单因素分析
Table 1. Single factor analysis of plastic bronchitis in children with severe mycoplasma pneumonia
项目 PB组(n=120) 非PB(n=200) 统计量 P值 性别(男/女,例) 68/52 112/88 0.014a 0.907 年龄(x±s,岁) 6.81±1.52 7.02±1.91 1.025b 0.306 发热持续时间(x±s,d) 10.20±2.02 7.12±1.15 17.383b < 0.001 住院时间(x±s,d) 14.31±2.11 7.01±1.03 41.417b < 0.001 发热[例(%)] 1.973a 0.160 是 110(91.67) 191(95.50) 否 10(8.33) 9(4.50) 咳嗽[例(%)] 0.308a 0.579 是 115(95.83) 194(97.00) 否 5(4.17) 6(3.00) 呼吸急促[例(%)] 49.765a < 0.001 是 51(42.50) 18(9.00) 否 69(57.50) 182(91.00) 气喘[例(%)] 1.138a 0.286 是 34(28.33) 46(23.00) 否 86(71.67) 154(77.00) 胸腔积液[例(%)] 20.902a < 0.001 有 55(45.83) 43(21.50) 无 65(54.17) 157(78.50) 支气管镜灌洗次数(x±s, 次) 3.12±0.91 1.42±0.50 21.559b < 0.001 白细胞计数(x±s, ×109/L) 9.94±1.32 7.11±1.20 19.666b < 0.001 中性粒细胞比例(x±s, %) 75.42±5.71 60.50±5.89 22.189b < 0.001 淋巴细胞比例(x±s, %) 25.31±5.37 41.03±5.82 24.071b < 0.001 CRP(x±s, mg/L) 75.11±26.72 31.85±14.25 18.868b < 0.001 LDH(x±s, U/L) 622.61±113.52 371.42±85.13 22.488b < 0.001 注:a为χ2值,b为t值。 表 2 变量赋值情况
Table 2. The assignments of variables
变量 赋值方法 发热持续时间 < 8 d=0, ≥8 d=1 住院时间 < 10 d=0, ≥10 d=1 呼吸急促 否=0, 是=1 胸腔积液 否=0, 是=1 支气管镜灌洗次数 < 2次=0, ≥2次=1 白细胞计数 < 8.10×109/L=0, ≥8.10×109/L=1 中性粒细胞比例 < 68.10%=0, ≥68.10%=1 淋巴细胞比例 ≥30%=0, <30%=1 CRP < 40 mg/L=0, ≥40 mg/L=1 LDH < 450 U/L=0, ≥450 U/L=1 表 3 重症支原体肺炎患儿发生塑形性支气管炎影响因素的多因素logistic回归分析
Table 3. Multivariate logistic regression analysis of plastic bronchitis in children with severe mycoplasma pneumonia
变量 B SE Waldχ2 P值 OR值 95% CI 发热持续时间 4.021 0.517 60.490 0.001 55.757 54.723~56.791 呼吸急促 2.114 0.612 11.932 0.004 8.281 7.057~9.505 胸腔积液 2.016 0.587 11.795 0.001 7.508 6.334~8.682 白细胞计数 2.111 0.429 24.214 0.001 8.256 7.398~9.114 中性粒细胞比例 2.341 0.529 19.584 0.001 10.392 9.334~11.450 淋巴细胞比例 1.671 0.411 16.530 0.009 5.317 4.495~6.139 CRP 2.044 0.512 15.938 0.005 7.721 6.697~8.745 LDH 1.208 0.507 5.677 0.012 3.347 2.333~4.361 注:本表仅列出差异有统计学意义的结果。 表 4 2组重症支原体肺炎患儿血清TSP1、FOXP3表达比较(x±s)
Table 4. Comparison of serum TSP1 and FOXP3 expression in children with severe mycoplasma pneumonia between the non-PB group and the PB group(x±s)
组别 例数 TSP1(ng/mL) FOXP3 非PB组 200 54.68±9.00 3.08±0.51 PB组 120 66.71±12.17 3.92±0.69 t值 10.114 12.459 P值 0.001 0.001 表 5 ROC曲线分析TSP1、FOXP3水平对患儿塑形性支气管炎发生的预测价值
Table 5. ROC curve analysis of the predictive value of TSP1 and FOXP3 levels for plastic bronchitis in children
项目 AUC(95% CI) 灵敏度(%) 特异度(%) 准确性(%) P值 TSP1 0.713(0.644~0.782) 81.67(98/120) 75.00(150/200) 77.50(248/320) 0.001 FOXP3 0.668(0.598~0.738) 62.50(75/120) 71.00(142/200) 67.81(217/320) 0.001 两项联合 0.884(0.841~0.927) 93.33(112/120) 70.50(141/200) 79.06(253/320) 0.001 -
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