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时间:2018-09-02
《急性移植物抗宿主病病人Th细胞亚群变化及其临床意义.doc》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、急性移植物抗宿主病病人Th细胞亚群变化及其临床意义作者:王书红,达万明,靳海杰,靖彧,苏荣,阮秀霞【摘要】本研究探讨异基因造血干细胞移植(alloHSCT)后急性移植物抗宿主病(aGVHD)时Th细胞亚群的数量变化及其临床意义。观察了23例alloHSCT患者aGVHD的发病情况,aGVHD的诊断主要依据临床表现,对部分病例进行了皮肤活检,取得病理学依据。移植前后定期采集23例患者的外周血,采用流式细胞仪检测其Th细胞亚群Th1、Th2细胞比例的变化。结果表明:23例患者8例发生了aGVHD,其中3例Ⅰ度,2
2、例Ⅱ度,3例Ⅲ度aGVHD,15例未发生aGVHD。流式细胞术检测显示,发生aGVHD患者的Th1细胞量明显高于未发生aGVHD患者(p<0.01),Ⅱ-Ⅲ度aGVHD患者Th1细胞的IFNγ表达明显高于未发生aGVHD患者(p<0.01),而Th2细胞的IL4表达明显低于未发生aGVHD患者,动态观察发现在aGVHD发生前和发生后未治疗的患者Th1细胞明显增高,治疗后明显下降,而未发生aGVHD的患者移植前后Th1细胞量变化不大。结论:发生aGVHD患者Th1细胞明显增多,且这种增多与aGVHD
3、有关。因此,移植后早期动态监测Th细胞亚群Th1量的变化有助于aGVHD的诊治。【关键词】急性移植物抗宿主病QuantitativeChangeofThCellSubsetsinPatientswithAcuteGraftversusHostDiseaseandItsClinicalSignificanceAbstractThisstudywaspurposedtoinvestigatethechangeofThcellsubsetsinthepatientswithacutegraftversushost
4、disease(aGVHD)andtoexploreitsroleinthepathogenesisofaGVHDafterallogeneichematopoieticstemcelltransplantation(alloHSCT).23patientsunderwentalloHSCTwereselectedforanalysis.TheaGVHDinpatientswasdiagnosedaccordingtoclinicalfeatures,andwasconfirmedbyskinbiopsyin
5、somepatients.Theperipheralbloodfrom23patientswascollectedbeforeandafteralloHSCT.ThequantitativechengesofTh1andTh2cellsinperipheralbloodsamplesweredetectedbyusingflowcytometry.Theresultsshowedthatoutof23patieatstheaGVHDoccuredin8patientsincluding1caseofgradeⅠ
6、,2caseofgradeⅡ,3casesofgradeⅢ;noaGVHDoccuredin15patients.TheflowcytometryanalysisrevealedthattheamountofTh1cellsinpatientswithaGVHDwasmuchhigherthanthatinpatientswithoutaGVHD(p<0.01),theIFNγexpressionofTh1cellsinpatientswithaGVHDofgradⅡ-Ⅲsignificantlywash
7、igherthanthatinpatientswithoutaGVHD(p<0.01),meanwhietheIL4expressionofTh2cellsinpatientswith5aGVHDofgradeⅡ-ⅢwassignificantlylowerthanthatinpatientswithoutaGVHD(p<0.05).DynamicaldetectionindicatedthattheTh1obviouslyincreasedbeforeoccurrenceofaGVHDandbef
8、oretreatmentofaGVHD,whiletheTh1cellsobviouslydecreasedaftertreatmentofaGVHD.TheTh1cellsnotchangedsignificantlyinpatientswithoutaGVHDbeforeandafteralloHSCT.ItisconcludedthatTh1cellsobviou
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