%0期刊文章%a schmekel,b%a rydberg,i%a norlander,b%a sjosward,kn%a ahlner,j%a andersson,rg%t立体选择性药代动力学S-salbutamol of s-salbutamol ofectemate of s-salbutamol ofection the Healty志愿者在健康的志愿者后使用。%d 1999%j欧洲呼吸道期限%p 1230-1235%v 13%n 6%x racemic r,S-索丁胺醇用于缓解支气管收缩。只有R-Anantiomer具有支气管扩张特性。已提出S-Enantiomer在豚鼠中引起体外支气管过度反应性。已经显示了立体选择性消除Salbutamol,S-Salbutamol的速度比R-Salbutamol慢。这项研究质疑立体选择性消除率在口腔或肺输送后是否相似,以及在类似于常见临床用途的情况下重复吸入后S:R比率是否会增加。十八位健康的志愿者在麻醉期间接受了单剂量的外星人沙丁胺醇作为在气管中灌输的溶液,作为吸入的微粉粉末和/或作为摄入的片剂。五名志愿者吸入了反复的剂量的消极salbutamol。使用一种技术测量血浆和尿液中的浓度,该技术允许浓度低至0.1 ng x ml(-1)的样品分离。在不同的给药模式后,S-甲丁胺醇的生物利用度显着高于R-Salbutamol的生物利用度。 Stereoselective elimination was more pronounced after oral administration than after inhalation. Repeated inhalations resulted in successive increases in the S:R ratio as steady state was approached. In conclusion, the clinical consequences of increasing plasma concentrations of S-salbutamol need to be further assessed. %U //www.qdcxjkg.com/content/erj/13/6/1230.full.pdf