简介：Objective:Toobservetheeffectsofthermalstressonproliferationofhumanvascularendothelialcells(VECs)andexploreitssignificance.Methods:ChangesofVECsproliferationwereinvestigatedwith3H-TdRincorporationmethodafterECV304wastreatedat43℃for2hours,whileexpressionsofintercellularadhesionmolecule-1(ICAM-1),inhibitorofdifferentiation-1(ID1),andP16andP21proteinsweredeterminedbyWesternBlotting.Results:TheeffectofinhibitionofVECsgrowthafterthermalstresswasdetectedby3H-TdRincorporationexperiment.WesternblottingshowedICAM-1,amarkerofactivatedendothelialcells,wasincreasedmarkedlyafterthermalstress.ExpressionofID1proteindeclinedgraduallywithincreasingexpressionsofitsdownstreamgenes,P16andP21followingthethermalstress.Conclusions:ThermalstresscouldstronglyactivateVECsandinhibitproliferationofVECsthroughID1,thusdownregulatingcyclin-dependentkinaseinhibitors,P16andP21,whichmightbeanessentialpathwayforrecoveryofVECsafterthermalstress.

简介：本研究旨在探讨急性髓系白血病（AML）患者6；9染色体易位与DEK-CAN融合基因表达之间的关系及临床意义。患者骨髓细胞短期培养后按常规方法制备染色体，采用R显带技术进行染色体核型分析。用逆转录巢式聚合酶链反应（RT-nest-PCR）对4例AML患者的骨髓或外周血单个核细胞DEK-CAN融合基因表达进行了分析，并对其中3例行异体骨髓移植（allo-BMT）患者进行动态随访。结果表明：4例急性髓系白血病患者为t（6；9）（p23；q34）易位；4例初诊、再发及完全缓解期患者均不同程度检出DEK-CAN融合基因，占100％；其中初诊、再发期表达明显增强，完全缓解期减弱；3例患者allo-BMT后1-24个月均表达DEK-CANmRNA。临床资料显示4例AML患者中2例于CR后1-24个月复发（其中1例接受异体骨髓移植）、死亡，其余2例完全缓解，在治疗中先后接受异体骨髓移植，现仍然生存。结论：DEK-CAN基因是AML发病的分子基础，检测DEK-CAN融合基因对于AML的诊断、疗效观察及预后判断有重要意义。

简介：