RT Journal第SR电子T1支气管肺泡灌洗液尿素作为健康吸烟者肺渗透率的衡量标准JF欧洲呼吸杂志Jo EUR Respir J FD欧洲呼吸学会SP 285 OP 290 VO 15是2 A1 Ward,C A1 Thien,F A1 Secombe,188bet官网地址J A1 Gollant,S A1 Walters,EH YR 2000 UL //www.qdcxjkg.com/content/15/2/285.Abstract吸烟对血液中的肺渗透到低分子量的影响研究了溶质尿素,试图评估其用作支气管肺泡灌洗(BAL)研究的稀释标志物。在经历3×60毫升支气管肺灌洗(BAL)之前,在接受3×60毫升的支气管血管灌洗(BAL)之前,熏制一支香烟的五个健康正常吸烟者,以及还研究了五个也接受了秃顶但没有香烟烟雾暴露。支气管镜检查前五分钟,静脉检查4MBq 3H-水和1MBQ 14C-UREA静脉注射,并使用生物化学尿素测定和间接放射性机构方法来评估渗透性。结果表明,与非吸油剂方法有显着的反射器方法的结果相比,吸烟组在其BAL上清液中具有较少的尿素(P <0.005)。使用这两种方法,表明尿素水平在两组中依次吸出的等分试样增加。中位于吸烟者中直接测定的尿素水平如下:等分试样1.05微米x ml(-1),(范围0.03-0.14),等分试样20.10μmx ml(-1)(0.07-0.17),等分试样30.12微摩尔X mL(-1)(0.06-0.23)(P <0.05)。这导致序列等分试样中的上皮衬里液的计算水平显着增加(P <0.05)。 In addition, there were large but variable amounts of labelled water detected in both subject groups indicating a complex interaction between the BAL procedure and the circulation. Changing urea measurements during the bronchoalveolar lavage procedure confound the use of the urea (epithelial lining fluid) method for normalizing dilution factors. The use of epithelial lining fluid determinations in smokers ignores the additional and probably complex permeability changes. The present data suggest that acute exposure to cigarette smoke in smokers may decrease blood to airway permeability.