健康供者外周血造血干细胞动员后采集的最佳时机

背景:外周血干细胞移植的首要条件是造血干细胞有效动员和采集,并能较快持久地重建造血.近年国内外不少单位已开展了此项工作,但平均每例供者采集次数较多,且造血干细胞的产率高低差别较大. 目的:探讨健康供者外周血造血干细胞动员后采集的最佳时机.方法:2003-01/2008-12海口市人民医院进行异基因外周血造血干细胞采集的健康捐赠者16例,随机分为2组,单纯动员组6例,皮下注射粒细胞集落刺激因子5.0～10.0 μg/(kg·d),共5 d;联合组10例,在单纯动员组基础上,静脉推注地塞米松10 mg.每例供者均采集2次外周血造血干细胞,单纯动员组与联合组又各分为2 h,4 h两个亚组,即若在第4天动员后2 h采集,则第5天在动员后4 h采集;若在第4天动员后4 h采集,则第5天在动员后2 h采集.16例供者采集量为4.0～5.0 mL,推赶量3.0～5.0 mL,总循环血量6.7～10.1 L.结果与结论:单纯动员组、联合组采集的单个核细胞数均达到(4.0～8.0)×10~8 kg~(-1).与2 h亚组比较,两组4 h亚组采集物的单个核细胞数均明显增加(P < 0.05).提示粒细胞集落刺激因子动员后第4,5天进行采集,4 h采集物的细胞浓度明显高于2 h;供者采集时循环血量是其自身循环血量的1.8～2.2倍时已能一次采集足够量的细胞数,有较合理的采集时间-价值-效益的关系.

Best time for mobilization and collection of peripheral blood stem cell from healthy donors

BACKGROUND:Effective mobilization and collection of hemopoietic stem cells are initial factors for peripheral stem cell transplantation,while they make sure a permanent reconstruction of hemopoiesis.Mobilization and collection have been developed;however,the collection is more,and the yield of hemopoietic stem cells is various.OBJECTIVE:To investigate the best time of mobilization and collection of peripheral blood stem cells from healthy donors.METHODS:A total of 16 donors who were selected from Haikou Peo...