肺炎支原体感染对慢性阻塞性肺疾病患者免疫功能的影响

采用ＰＣＲ方法对１３３例慢性阻塞性肺部疾病（ＣＯＰＤ）急性发作期患者（包括支气管哮喘并感染患者）的肺炎支原体（ＭＰ）进行检测；同时采用酶联免疫方法测定ＭＰ感染的肺心病患者的ｓＩＬ－２Ｒ水平及血清总ＩｇＥ水平。结果显示：ＣＯＰＤ急性发作期患者的ＭＰ感染率为３４．５９％；肺心病加重期组及支气管哮喘感染组的ＭＰ感染率明显高于慢性支气管炎急性发作组（Ｐ＜０．０１）；ＭＰ感染的肺心病组的ｓＩＬ－２Ｒ水平显著高于普通细菌感染的肺心病患者组及正常对照组（Ｐ＜０．０１）。单纯ＭＰ感染的ＣＯＰＤ患者ｓＩＬ－２Ｒ水平与周围血象淋巴细胞成负相关（ｒ＝－０．７０８４，Ｐ＜０．０１），单纯ＭＰ感染的肺心病患者的血清ＩｇＥ水平高于普通细菌感染的肺心病患者（Ｐ＜０．０５）。

Influence of MP infection on immunologic function in patients with chronic obstructive pulmonary disease

The aim of this study was to detect Mycoplasma pneumoniae(MP) in sputum with chronic obstructive pulmonary disease(COPD) by using polymerase chain reaction and measured the level of sIL 2R in chronic pulmonary heart disease(CPHD) patients by Enzyme Linked Immnosorbert Assay(ELISA). At the same time, we also measured the level of the serum total IgE in CPHD patients. We determine the relationship between the sIL 2R and lymphocytes. The results showed that rate of MP infection in COPD patients was 34.59%. The rate of MP infection in CPHD patients and asthmatic patients were significantly higher than that in patients with chronic bronchitis. The level of sIL 2R in patients with CPHD who had MP infection increased significantly higher than that in CPHD patients which didn't have MP infection. There was a linear negative correlation between the level of sIL 2R and lymphocytes. The level of serum total IgE in CPHD patients with MP infection was higher than that in patients with other infection. These data suggest that MP is a common agent in COPD patients, particularly in CPHD and asthma. MP infection can impair the cellular immunity and immunotherapy combined with antibiotics may be more effective.