相变高分子微球增效hifu消融骨肉瘤的分析-analysis of hifu ablation of osteosarcoma with phase change polymer microspheres.docx
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相变高分子微球增效hifu消融骨肉瘤的分析-analysis of hifu ablation of osteosarcoma with phase change polymer microspheres
重庆医科
重庆医科大学硕士研究生学位论文
万方数据
万方数据
英汉缩略语名词对照
英文缩写
Pct-PLGAM
英文全称
Phase-change type Poly lactic-co-glycolic acid
microspheres
中文全称
相变高分子微球
OS
Osteosarcoma
骨肉瘤
HIFU
High intensity focused ultrasound
高强度聚焦超声
PFH
Perfluoropentane
全氟己烷
PLGA
Poly lactic-co-glycolic
乳 酸 / 羧 基 乙 酸 共
acid
聚物
ADV
Acoustic droplet vaporization
声学液滴汽化
SC
Sodium cholate
胆酸钠
PBS
Phosphate buffered saline
磷酸盐缓冲液
1,1’-dioctadecy-3,3,3’-tetramethy-
Dil
Lindocarbocyanineperchlorate
1,1’- 双 十 八 烷
-3,3,3‘-四甲基吲哚
羧花青高氯酸盐
d
Day
天
h
Hour
小时
g
Gram
克
min
Minute
分钟
s
Second
秒
ml
Millititer
毫升
ul
Microliter
微升
cm
Centimeter
厘米
nm
Nanometer
纳米
um
Micrometer
微米
W
Watt
瓦
1
MHz Fig Rpm
℃
Million hertz Figure
Rolls per minute Centi-degree
兆赫兹
图片 转每秒 摄氏度
2
相变高分子微球增效 HIFU 消融骨肉瘤的研究
摘 要
目的:观察相变高分子微球增效高强度聚焦超声(high intensity focused ultrasound,HIFU)消融骨肉瘤的效果,初步探讨不同浓度相 变微球对增效作用的影响,评估相变微球在增效 HIFU 消融骨肉瘤中的 运用价值。
方法:首先制备包裹液态氟碳的高分子微球,并检测其形态、结 构、粒径电位及相变条件;然后建立裸鼠异位骨肉瘤模型,随机划分 为空白对照组, 实验对照组 与实验组(用指定浓度包裹液态氟碳的 PLGA 微球处理),处理后立即用海级星对肿瘤进行辐照。在辐照后 0 h 和 72 h 两个时间点,提取标本并观察坏死面积、进行 HE 染色,最后 对 72 h 时提取标本的坏死周边组织进行增殖和凋亡测定。
结果:HIFU 处理后,对照组的坏死面积小于高浓度的实验组 (P0.05),但和低浓度实验组的坏死面积无显著差异(P>0.05)。高浓度 实验组的坏死面积在 3 天后进一步扩大(P0.05),而其他组没有扩大。 周边组织的凋亡和增殖检测结果是实验组较对照组都有差异(P0.05)。 结论:在异位骨肉瘤裸鼠模型中,相变高分子微球能够增强 HIFU
对于骨肉瘤的消融效果,这种增强作用与微球浓度相关。
关键词:相变微球,高强度聚焦超声,骨肉瘤
3
APPLICATION OF PHASE-CHANGE TYPE POLY LACTIC-CO-GLYCOLIC ACID MICROSPHERES
(PCT-PLGAM) ENHANCING THE EFFICACY OF HIFU ABLATION OSTEOSARCOMA
ABSTRACT
Objective: To observe the effect of HIFU ablating osteosarcoma enhanced by Phase-change type Poly lactic-co-glycolic acid microspheres (Pct-PLGAM) and the influence of Pct-PLGAM with different concentrations on the enhancing efficacy, in order to investigate the feasibility of Pct-PLGAM enhancing efficacy of HIFU ablating the osteosarcoma
Methods: Pct-PLGAM was prepared and detect its form, particle size, surface potential and the condition of Phase-change were detected. Xenograft tumor model of human osteosarcoma were established for as the experimenta
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