jE壅匿堂2QQ8生箜3Q鲞筮!Q塑慢性阻塞性肺部疾病患者血清及痰中p一防御素一2水平及临床意义王卓,姚婉贞2夏国光1·论著.【摘要】目的测定慢性阻塞性肺疾病(COPD)急性加重期(AECOPD)和稳定期患者血清和诱导痰中B一防御素一2(hBD一2)水平,探讨hBD一2在COPD发病中的可能作用。方法收集30例AECOPD患者、21例COPD稳定期患者及22例健康受试者的血清和诱导痰。处理后进行痰细胞计数和分类.应用酶联免疫吸附I去(ELISA)检测血清和诱导痰中hBD一2及白细胞介素一8(IL一8)水平,并分析hBD一2与中性粒细胞、IL一8、气道阻塞之间的相关性。结果①血清hBD一2水平,AECOPD组为448(291—1558)ng/L,COPD稳定期组为698(579.783)ng/L健康对照组为697(342—706)ng/L,乏组比较无显著性差异。②诱导痰hBD一2水平,AECOPD组为247(158。451)ng/L、COPD稳定期组为341f297~401)ng/L、健康对照组为451(282~495)ng/L,三组比较无显著性差异。③AECOPD患者痰培养细菌菌落≥107CFU/ml组和<107cFu/nll组比较,诱导痰hBD一2水平无显著性差异。④血清IL一8水平.AECOPD组为(121+114)ng/L、COPD稳定期组为(84+16)ng/L,均显著高于健康对照组[(54+27)ng/L](P均<0.05)。⑤诱导痰IL一8水平,AECOPD组为(5671+2208)ng/L、COPD稳定期组为(3037±669)ngCL,均显著高于健康对照组[(1870±1217)ng/L](P均<0.05);AECOPD组显著高于COPD稳定期组(尸0.05].②TherewasnosignificantdifferenceintheinducedsputumhBD-2levelamongtheAECOPDgroup[247(158-451)ng/L],stableCOPDgroup[341(297—401)ng/L]andhealthysubjects[451(282—495)ng/L,x2=4.92,P>0.053.③TherewasnosignificantdifferenceintheinducedsputumhBD一2levelbetweenthepositivequantitativesputumculturegroup(≥107CFU/m1)andnegativequantitativesputumculturegroup(<107CFU/m1)inAECOPDpatients[295(158-440)ng/LVS.233(163-455)ng/L,Z2_-O.28,P>0.051.④TheserumIL-8levelweresignificantlyhigherinpatientsofAECOPD[(121+114)ng/LlandstableCOPD[(84±16)ng/L]ascomparedtothatofhealthysubjects【(54±27)ng几’P