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ID:15181409
大小:36.00 KB
页数:10页
时间:2018-08-01
《acd保养液中树突状细胞的变化》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、ACD保养液中树突状细胞的变化作者:姚仁南,陈复兴,李玺,王振德,刘军权,张赞,赵勤,孙飞【摘要】目的检测人树突状细胞(DC)在ACD保养液中不同时间的增殖和吞噬能力,为减少非溶血性输血反应提供实验依据。方法抽取8例健康自愿献血者外周静脉血200ml,ACD-B抗凝,4℃保存,在第1、2、3、4天分别取血20ml,分离单个核细胞(PBMC),孵育2h洗涤后,贴壁细胞加入细胞因子联合诱导培养DC。灭活的酵母菌与DC以100∶1比例加入后37℃孵育1h,取细胞悬液涂片,瑞-姬染色。光镜下计数吞噬酵母菌的DC,计算出DC的吞噬率和吞噬指数。结果正常人外周静脉血第1天培养诱导的DC增殖
2、生长良好,第2天仅有少量DC生长,第3、4天则无DC生长。第1天培养诱导的DC对酵母菌的吞噬率为78%~85%,平均值81%,吞噬指数为254。结论在ACD保养液中的健康人的DC仅在离体后1~2天内能诱导增殖,诱导增殖后的DC具有较强的吞噬功能。DC活性可能与某些非溶血性输血反应有关。【关键词】树突状细胞;ACD保养液;吞噬功能 Abstract:ObjectiveToprovideexperimentalbasisforclinicalreductionofnon-hemolytictransfusionreactionsby10detectionsoftheprolife
3、rationandthephagocyticcapacityofhumandendriticcells(DC)inACDpreservationsolutionatdifferenttimepoints.Methods200mlofperipheralveinbloodwasrespectivelycollectedfrom8healthyvoluntarydonorsandwasstoredat4℃,withanticoagulantACDsolutionadded.Ondays1,2,3and4,20mlbloodwasrespectivelyallocatedtoisol
4、ateperipheralbloodmononuclearcells(PBMC).Havingbeenincubatedfor2hoursandrinsed,theadherentcellsweresupplementedwithcellfactorstoinduceDCculture.InactivatedyeastandtheharvestedDCsattheratioof100∶1wereincubatedfor1hourat37℃,andWright-Giemsastainingofthecellsuspensionsmearwasperformed.Thenumber
5、ofDCsthatphagocytosedyeastwascountedunderthelightmicroscopeandthephagocyticrateandphagocyticindexofDCswerecalculated.ResultsTheperipheralvenousbloodofnormaldonorsofDay1hadgoodproliferationofDCsandthebloodofDay2hadonlyalittlegrowthofDCs,whilethebloodofdays3and4hadnoDCgrowth.Thephagocytosisrat
6、eofDCsinducedandculturedonDay1was78%~85%,atanaverageof81%,andphagocyticindexwas254.ConclusionTheDCsofhealthyhumanscanonlybeinducedtoproliferatewithin1or2daysafterbloodcollectionandpreservationinACDsolution,andtheinducedproliferationof10DCshasstrongphagocytosis.TheDCactivitymayberelatedtocert
7、ainnon-hemolytictransfusionreaction. Keywords:dendriticcells;ACDsolution;phagocytosis 树突状细胞(dendriticcell,DC)是近年来倍受人们关注的一类抗原递呈细胞(antigenpresentationcella,APC)[1],可把抗原特异性地提呈给淋巴细胞而产生抗原特异性细胞免疫反应。因其功能和作用独特,近年来倍受人们关注。在血液保养液中DC的生存和功能状况国内尚未见报道。为此,我们对8例正
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