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放射性粒子组织间植入治疗肿瘤是将放射性核素直接种植到肿瘤内或者肿瘤周围, 通过放射性核素持续释放的射线达到杀伤肿瘤的目的[1]。1965年, 美国纽约Memorial Sloan-Kettering医院肿瘤中心进行了第一例前列腺癌 125I粒子治疗, 之后的数十年来, 125I粒子植入治疗进展十分迅速, 在国外广泛应用于治疗前列腺癌, 国内许多医院将此技术进一步扩展, 应用于头颈部癌、肝癌、肺癌、胰腺癌及妇科肿瘤等的综合治疗[2-7], 也取得一定的近期疗效。尽管如此, 125I粒子组织间植入治疗肿瘤的单独疗效至今尚处于试验研究阶段, 其中一个重要的原因是对 125I粒子植入如何以持续低剂量率照射方式杀伤细胞的作用和机制的研究尚不够深入, 因此进行基础研究十分必要, 近年来体外实验研究正在逐步进行。
125I粒子持续低剂量率杀伤肿瘤细胞体外实验研究进展
Advances in the experimental study on continuous low-dose-rate irradiation by 125I seeds killing cancer cell in vitro
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摘要: 125I粒子组织间植入治疗肿瘤因其手术创伤小、疗效好、对正常组织辐射损伤小等优点受到了国内外越来越多学者的关注。随着 125I粒子抑制肿瘤作用临床研究的深入,相关体外实验研究也在逐步开展。该文就 125I粒子持续低剂量率照射杀伤肿瘤细胞的体外实验研究进展及其实验模型设计进行综述。Abstract: More and more researchers pay close attention to the treatment of cancer with 125I seeds implantation because of the advantages of little surgical trauma, good curative effect and little radiation damage tonormal tissue.As the clinical studyon 125I seeds killing cancer has been performed profoundly, the correlated experimental study in vitro was carried out gradually.This review will focus on the recent advances in the experimental study and model design on continuous low-dose-rate irradiation by 125I seeds killing cancer cell in vitro.
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Key words:
- Iodine radioisotopes /
- Brachytherapy /
- Neoplasms
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