机构地区:[1]首都医科大学附属复兴医院呼吸科,北京市100038
出 处:《中国全科医学》2014年第10期1124-1128,共5页Chinese General Practice
基 金:北京市西城区创新资金(200907)
摘 要:目的研究老年慢性阻塞性肺疾病(COPD)稳定期患者下呼吸道细菌定植与细胞免疫之间的相互关系。方法纳入2011年1月—2012年12月在首都医科大学附属复兴医院呼吸科慢病管理人群中诊断明确的老年(年龄≥65岁)COPD稳定期患者50例(观察组),对其诱导痰液进行细菌学定量,测定痰及血中白介素8(IL-8)、高敏C反应蛋白(hs-CRP)和细胞免疫因子(CD4+、CD8+和CD4+/CD8+)的水平,并与同期在体检中心招募的同年龄段健康志愿者30例(对照组)进行比较。结果共入选患者50例,其下呼吸道细菌定植率为64.0%,致病菌主要是流感嗜血杆菌、肺炎链球菌、卡他莫拉菌、副流感嗜血杆菌、大肠埃希菌、铜绿假单胞菌、金黄色葡萄球菌、鲍曼不动杆菌及真菌,分别占27.8%、16.7%、13.9%、11.1%、8.3%、8.3%、5.6%、5.6%、2.7%,其中4例合并2种定植菌占11.1%。老年COPD稳定期细菌定植患者痰IL-8、血IL-8及血hs-CRP水平分别为(408.73±286.09)ng/L、(63.49±42.98)ng/L、(12.15±8.13)mg/L,无细菌定植患者痰IL-8、血IL-8及血hs-CRP水平分别为(242.61±85.52)ng/L、(36.66±11.91)ng/L、(6.50±3.97)mg/L,两组相比差异有统计学意义(P<0.05)。对照组CD4+、CD8+和CD4+/CD8+值分别为(38.40±4.92)%、(24.32±8.76)%、(1.89±0.90),其中细菌定植患者分别为(36.37±8.26)%、(28.96±7.45)%、(1.29±0.27),无细菌定植患者分别为(25.06±5.97)%、(36.44±9.30)%、(0.73±0.31),三组间差异有统计学意义(P<0.05)。结论部分老年COPD稳定期患者存在下呼吸道细菌的定植,而且可以出现一种以上致病菌的定植;细菌定植患者存在明显的气道炎性反应和免疫功能缺陷,这三者之间可能相互影响导致COPD急性加重趋于频繁。Objective To investigate the relationship between lower airway bacterial colonization ( LABC) and airway inflammation or cellular immunity of stable phase COPD patients.Methods 50 elderly stable phase COPD patients ( aged≥65 years) with clear diagnosis in the department of respiratory (observed group), Fuxing Hospital Affiliated to Capital University of Medical Sciences between January 2011 to December 2012 was compared with 30 recruiting healthy people in the same age who re-ceived health examination in the medical examination center ( control group ) on interleukin ( IL) -8, hs-CRP, CD4 +, CD8 +and CD4 +/CD8 +in the induced sputum , after monitored quantitative bacterial culture , and blood.Results Among the 50 subjects, 64.0%showed LABC with bacterial loads 〉106cfu/ml.Pathogenic bacteria included Hemophilus influenza (27.8%), Streptococcus pneumoniae ( 16.7%) , Catarrhal Moran bacteria ( 13.9%) , Hemophilus parainfluenza ( 11.1%) , Bacillus coil ( 8.3%) , Pseudomonas aeruginosa ( 8.3%) , Staphylococcus aureus ( 5.6%) , Baumanii ( 5.6%) and Fungus (2.7%) .4 cases were with two kinds of pathogens (11.1%).The concentration of IL -8 in sputum and IL-8 and hs-CRP in blood of the patients with LABC were (408.73 ±286.09)ng/L, (63.49 ±42.98) ng/L, (12.15 ±8.13) mg/L and were (242.61 ±85.52) ng/L, (36.66 ±11.91) ng/L, (6.50 ±3.97) mg/L of the patients without LABC respectively.Significant difference was found in the two groups (P〈0.05) .The levels of CD4 +, CD8 +and CD4 +/CD8 +were (38.40 ±4.92)%、(24.32 ±8.76)%、 (1.89 ±0.90) in healthy group.The levels of CD4 +, CD8 +and CD4 +/CD8 +were (36.37 ±8.26)%、(28.96 ±7.45)%、 (1.29 ±0.27) in group with LABC and (25.06 ±5.97)%、 (36.44 ±9.30)%、 (0.73 ±0.31) in&amp;nbsp;group without LABC.Significant difference were found in these three groups ( P〈0.05 ) .Conclusion LABC is found in a good porti
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