血清超敏C反应蛋白在支气管哮喘急性发作期的临床应用价值

张晓婷,王镇山,赵成燕.血清超敏C反应蛋白在支气管哮喘急性发作期的临床应用价值[J].中国医师进修杂志,2013,36(10):7-11.

哮喘 C反应蛋白质 呼吸功能试验 哮喘控制测试 诱导痰

张晓婷 王镇山 赵成燕

郑州大学附属郑州中心医院呼吸内科,大连医科大学附属第二医院呼吸科

2013

7-11.

万方

目的 研究支气管哮喘急性发作期患者血清超敏C反应蛋白(hs-CRP)与诱导痰白细胞分类计数、肺功能及哮喘控制测试(ACT)的相关性,探讨其临床应用价值.方法 收集支气管哮喘急性发作期患者30例(哮喘组),同时期健康体检者14例(对照组).测定对照组空腹血清hs-CRP和哮喘组经甲泼尼龙治疗5～7d前后的空腹血清hs-CRP.超声雾化4.5％氯化钠获取诱导痰,分别计算对照组、哮喘组治疗前后的嗜酸粒细胞百分比(EOS％)、中性粒细胞百分比、巨噬细胞百分比、淋巴细胞百分比.测定对照组、哮喘组治疗前后的肺功能.哮喘组进行ACT评分.利用Spearman相关分析判断血清hs-CRP与诱导痰白细胞分类计数、肺功能指标及ACT评分的相关性.利用受试者工作特征(ROC)曲线分析血清hs-CRP和诱导痰EOS％评估支气管哮喘急性发作期炎性反应水平的效能.结果 哮喘组有2例患者诱导痰失败排除本研究.哮喘组治疗前和治疗后血清hs-CRP均明显高于对照组[4.18(2.12～11.12)和1.48(1.03～4.81) mg/L比3.40(2.02 ～ 8.91) mg/L,H=18.939,P＜ 0.01],哮喘组治疗前血清hs-CRP明显高于治疗后(P＜0.01).治疗前,哮喘组血清hs-CRP与诱导痰EOS％呈正相关(r=0.849,P=0.000),与第1秒用力呼气容积占预计值百分比、第1秒用力呼气容积占用力肺活量比值、最大呼气中期流量占预计值百分比均呈负相关(r=-0.617,P=0.000;r=-0.559,P=0.002;r=-0.398,P=0.036),与ACT评分呈负相关(r=-0.511,P=0.005).血清hs-CRP的ROC曲线下面积为0.713,差异有统计学意义(P=0.003).结论 支气管哮喘急性发作期患者血清hs-CRP与诱导痰EOS％、肺功能、ACT评分具有良好相关性,是评价支气管哮喘系统性炎性反应水平的潜在标志物. Objective To study the correlation between the level of serum high sensitivity C-reactive protein (hs-CRP) and induced sputum cell counts,pulmonary function and asthma control test (ACT) in order to investigate the clinical application value of serum hs-CRP for the acute exacerbation bronchial asthma patients.Methods Thirty acute exacerbation bronchial asthma patients were collected as asthma group,14 healthy people during the same period were collected as control group.The fasting serum hs-CRP was examined in control group and before and after treatment of 5-7 d in asthma group.The induced sputum was obtained by ultrasonic atomizer 4.5％ sodium chloride,and the percentage of eosinophils (EOS％),neutrophil,macrophages,lymphocytes was calculated.The pulmonary function index was determined in control group and before and after treatment in asthma group.ACT score was performed in asthma group.The correlation between the serum hs-CRP and induced sputum differential leukocyte count,the pulmonary function index and ACT score was analyzed by Spearman correlation analysis.The effect of the serum hs-CRP and induced sputum EOS％ on inflammatory response of acute exacerbation bronchial asthma was evaluated by receiver operating characteristic (ROC) curve analysis.Results Two cases were excluded in asthma group.The serum hs-CRP before and after treatment in asthma group was higher than that in control group[4.18(2.12-11.12) and 3.40(2.02-8.91) mg/L vs.1.48(1.03-4.81) mg/L,H =18.939,P＜ 0.01].The serum hs-CRP before treatment was higher than that after treatment in asthma group (P ＜ 0.01).In asthma group,the serum hs-CRP had positive relationship with induced sputum EOS％ (r =0.849,P =0.000).There were negative correlations between the serum hs-CRP and the pulmonary function index such as one second forced expiratory volume percent predicted,one second forced expiratory volume occupied vital capacity ratio,maximum mid-expiratory flow percentage of predicted (r =-0.617,-0.559,-0.398,respectively,P =0.000,0.002,0.036,respectively).It was also found that the serum hs-CRP and ACT score had the remarkable Spearman linear correlation (r =-0.511,P =0.005).The area under the ROC curve of the serum hs-CRP was 0.713 (P =0.003).Conclusions There are significant correlations between the serum hs-CRP and induced sputum EOS％,pulmonary function,ACT score in the acute exacerbation bronchial asthma patients.It is found that hs-CRP could be considered as one of the potential marker to evaluate the systemic inflammation level of bronchial asthma.