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ID:33398390
大小:26.88 MB
页数:41页
时间:2019-02-25
《鼻咽癌放射耐受裸鼠模型的建立与姜黄素放射增敏的分析》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、[Results](1)TheradioresistantabilityofRescellswasstablethroughthepassages.ComparedwithCNE-2Z,theRescellshadhigherradiationsurvivalscores,slowergrowthrate,andlowerapoptosislevelatthepointofsixhoursafterradiationwith5Gy-ray.(2)ImplicationoftumorweightandtumorgrowthGurvesinn
2、udemice.0)TheaveragetumorweighthaddifferenceamongtheCNE.-2Zgroups:CNE..2Zcurcuminplusradiationgroup(2.2409)0.05between
3、anyothertwogruops.②TheaveragetumorweighthaddifferenceamongtheResgroups:Rescurcuminplusradiationgroup(3.3279)0.05amongthegroups.(3)Theinhibitionrateoftumorgrowthinnudemice.:Theinhibitionratesoftu
4、morgrowthwere71.77%inCNE一2Zcurcuminplusradiationgroup,42.53%inCNE一2Zradiationgroup,25.11%inCNE一2Zeurcumingroup,44.14%inRescurcuminplusradiationgroup,32.78%inResradiationgroup,and4.67%inRescontrolgroup.(4)E/Ovalue:In2Zgroups,E/Owas1.525.InResgroups,E/Owas1.147.[Conclusion]
5、(1)SuccessfulestablishmentoftheradioresistantNPCcellsubstrains,namelyRes.Reshasthreebiologicalcharacteristics:lowgrowthrateundergeneralcondition,lowapoptosisrateandhighsurvivalscoreafterthetreatmentofradiation.(2)SuccessfulestablishmentoftheradioresistantNPCmodelsinnudemi
6、cebasedonbothradioresistantNPCcellsofCNE.2ZandRes.(3)WefirstlyfindthatcurcuminhastheradiosensitizationeffectontheradioresistantNPCmodelsinnudemice.4(4)Weftu'thcrtoprovethatcurcuminhastheanti-NPCfunctioninnudemice.【Keyword】nasopharyngealcarcinoma,radioresistance,radiosensi
7、tization,curcumin51前言1.1研究背景鼻咽癌是一种常见的恶性肿瘤,在华南、东南亚地区高发,在我国又称为“广东瘤"。因鼻咽癌位置特殊,周围有许多重要的血管、神经相邻而使手术治疗受到很大限制。多数鼻咽癌为非角化性癌,对高能射线敏感,又由于原发灶和颈部淋巴引流区被包括在照射野内而使外部照射成为鼻咽癌最有效的治疗手段。放射治疗后5年生存率为34%~53%【l】。目前,肿瘤组织的放射抗性和J下常组织的放射损伤是影响放疗效果的主要障碍。根治放疗后约13%有病变残存,40%~60%肿瘤复发。而加大放射强度,则放疗引起的副作用也随之加大
8、。因而,建立鼻咽癌放射耐受裸鼠模型,探讨癌组织放射耐受的机制,减弱肿瘤细胞的放射抗性,提高放疗敏感性,有研究的必要性和巨大的社会经济价值。肿瘤细胞的放射效应跟多种因素有关:肿瘤组织血供不足导致
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