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xiaowanzi9

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Nanoparticles (NPs) possess the properties to accomplish tumor
targeted drug delivery through enhanced permeability and retention
(EPR) effect and targeting strategy. The preferential accumulation
of NPs in tumor site could enhance radiation-induced
cell-killing capacity in tumor site selectively and reduce the toxicity
to normal tissue. Long time retention of NPs in tumor tissue has
the potential to support fraction radiation process in fewer doses
than their small molecule counterparts. Besides, certain types of
NPs could develop the water solubility to avoid the use of polysorbate
80. NPs that consist of docetaxel and a tumor-targeting carrier
held great promise for improved radiosensitization. The universality
and selectivity of targeting strategies are crucial to the NPs design
for radiosensitization. Among these, stimuli-sensitive
technology causes the structures of the NPs be transformed by
external or internal triggering elements, facilitated drug release
and uptake into the tumor cells selectively.
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RXMCDM: 金币+1, 多谢应助! 2014-10-12 08:31:51
xiaowanzi9: 金币+25, 翻译EPI+1, ★★★★★最佳答案, 谢谢,太感谢了~~这么长都翻译得这么好 2014-10-13 09:10:58
纳米颗粒(纳米粒)所具有的特性,使其可以通过增强通透性、滞留效应(EPR)和靶向定位策略而实现肿瘤的靶向给药。纳米粒在肿瘤部位的优先积累可以提辐射射引起的选择性肿瘤部位细胞的杀伤能力,减低对正常组织毒性。纳米颗粒在肿瘤组织中长时间的滞留具有支持部分辐射过程的潜力,与未经纳米颗粒装载的小分子辐射物相比可以用更小的剂量。此外,某些类型的纳米粒的可开发其水溶解性,以避免使用聚山梨酯。含有多西紫杉醇的纳米粒和肿瘤靶向载体希望可以改善其放射增敏作用。定位策略的普遍性和选择性在设计纳米颗粒的放射增敏作用中是至关重要的。其中,刺激敏感技术使纳米粒的结构经外部或内部触发因素而转变,促进了药物释放和选择性进入肿瘤细胞中。
2楼2014-10-12 02:16:58
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