TY - JOUR T1 -吸入冷空气增加健康受试者肺部炎症细胞数量JF -欧洲呼吸杂志JO - Eur Respir J SP - 825 LP - 830 VL - 12 IS - 4 AU - Larsson, K AU - Tornling, G AU - Gavhed, D AU - Muller-Suur, C AU - Palmberg,L Y1 - 1998/10/01 UR - //www.qdcxjkg.com/content/12/4/825.abstract N2 -长期暴露在冷空气中可能会在健康受试者中诱发慢性哮喘样疾病,这已在越野滑雪者中得到证实。在目前的对照研究中,我们的目的是通过评估急性暴露于冷空气后气道内的细胞内流和介质水平,进一步阐明冷空气暴露与气道炎症之间的联系。在交叉设计中,8名健康、不吸烟的受试者暴露于冷空气(-23℃)和正常室内空气(+22℃)中轻度、间歇性工作2小时后进行支气管肺泡(BAL)和鼻腔灌洗。分析灌洗液中炎症细胞数量、细胞激活标志物、促炎细胞因子、白蛋白和白介素-8。冷空气暴露后BAL液中粒细胞和肺泡巨噬细胞数量明显增加(p<0.05)。BAL液淋巴细胞未见增加,BAL液中未见淋巴细胞活化迹象。IL-8浓度不变。BAL液中未见粒细胞活化(髓过氧化物酶、嗜酸性阳离子蛋白)。冷空气不影响鼻灌洗液中炎症细胞数量和白蛋白、IL-8浓度。 In conclusion, exposure to cold air induces an increased number of granulocytes and macrophages in the lower airways in healthy subjects without influencing other inflammatory indices such as cellular activation, plasma leakage and pro-inflammatory cytokines. These findings support the hypothesis that cold air could be of pathogenetic importance in the asthma-like condition previously found in cross-country skiers. ER -