中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (38): 5716-5721.doi: 10.3969/j.issn.2095-4344.2016.38.014

• 材料生物相容性 material biocompatibility • 上一篇    下一篇

125I辐照的聚醚醚酮粒子链的生物安全性

石  峰1,柴文文1,曾  理1,李  军1,王铖锴2
  

  1. 1湖南省肿瘤医院核医学科,湖南省长沙市  410013;2四川大学化工学院,四川省成都市  610000
  • 收稿日期:2016-08-04 出版日期:2016-09-16 发布日期:2016-09-16
  • 通讯作者: 石峰,湖南省肿瘤医院核医学科,湖南省长沙市 410013
  • 作者简介:石峰,男,1971年生,苗族,湖南省人,1993年中南大学毕业,硕士,主任医师。
  • 基金资助:
    湖南省科技厅项目(2014FJ3029)

Bio-safety of iodine-125 irradiated polyetheretherketone particle chain

Shi Feng1, Chai Wen-wen1, Zeng Li1, Li Jun1, Wang Cheng-kai2 
  

  1. 1Department of Nuclear Medicine, Hunan Cancer Hospital, Changsha 410013, Hunan Province, China; 2Institute of Chemical Engineering, Sichuan University, Chengdu 61000, Sichuan province, Chin
  • Received:2016-08-04 Online:2016-09-16 Published:2016-09-16
  • Contact: Shi Feng, Chief physician, Department of Nuclear Medicine, Hunan Cancer Hospital, Changsha 410013, Hunan Province, China
  • About author:Shi Feng, Master, Chief physician, Department of Nuclear Medicine, Hunan Cancer Hospital, Changsha 410013, Hunan Province, China
  • Supported by:
    the Project of Science and Technology Commission of Hunan Province, China, No. 2014FJ3029

摘要:

文章快速阅读:

 

文题释义:
125I密封籽源辐照
:是指把125I密封籽源装入粒子链中,通过125I的低能X射线对粒子链进行射线照射,以达到破坏或影响粒子链微管结构的影响。
聚醚醚酮:是一种新型的半晶状热塑性聚合物,在较宽的温度范围内有比较恒定的理化性能、介电性能和力学稳定性。芳香族聚醚醚酮的化学结构表明其具有耐高温(超过300 ℃)、抗化学、抗辐射破坏、良好的生物相容性以及比一般金属更好的力学性能。目前,利用其良好的组织相容性及易加工性制备新型放射性粒子及粒子链目前还未见报道,具有一定的创新性。

背景:研究表明聚醚醚酮很有潜质,能携带具治疗作用的短射程辐射物参与临床治疗。然而,目前国内外尚未有任何有关碘粒子辐照后聚醚醚酮及其复合材料的生物安全性评价。
目的:评价125I密封籽源辐照的聚醚醚酮粒子链的生物安全性。
方法:参考GBT-16886制作聚醚醚酮粒子链浸提液,进行小鼠、兔急性毒性实验、兔热原实验及兔皮内刺激性实验。实验分3组,实验组、材料对照组及阴性对照组分别给予辐照后聚醚醚酮粒子链浸提液、未辐照聚醚醚酮粒子链浸提液和浸提液进行对比观察实验。
结果与结论:①兔及小鼠急性全身毒性实验:聚醚醚酮粒子链辐照后浸提液对全部动物的呼吸、活动、毛发、分泌物、体质量等一般情况以及心肝脾肺肾等重要脏器的病理组织学等均无影响;②热原实验:有3只兔的体温升高最大值为0.4 ℃(<0.6 ℃),总和为0.7 ℃(<1.3 ℃);③皮内注射实验:兔红斑和水肿反应评分均为0;④结果说明:聚醚醚酮粒子链辐照后浸提液无急性全身毒性、无热原反应,无皮内注射刺激性反应,说明经125I粒子辐照后的聚醚醚酮粒子链生物安全性良好。

关键词: 生物材料, 缓释材料, 聚醚醚酮, 材料生物相容性, 125I密封籽源, 肿瘤治疗, 粒子链, 碘粒子, 浸提液, 生物安全性评价, 全身急性毒性实验, 热原反应实验, 皮内注射实验

Abstract:

BACKGROUND: Polyetheretherketone (PEEK) has the potential to carry short-range radiations for cancer treatment. However, there is a lack of bio-safety assessment focusing on125I irradiated PEEK particle chain.
OBJECTIVE: To evaluate bio-safety of the 125I brachytherapy source irradiated PEEK particle chain.
METHODS: PEEK particle chain extracts were prepared according to GBT-16886 and applied in acute toxicity test on mice and rabbits, rabbit pyrogen test and rabbit intradermal reaction test. Animals in experimental, material and negative control groups were given irradiated PEEK particle chain extracts, non-irradiated PEEK particle chain extracts and extracts, respectively, to compare the experimental results.
RESULTS AND CONCLUSION: In mouse and rabbit acute toxicity test: irradiated PEEK particle chain extracts made no effects on the animal general conditions like breathing, activity, hair, secretion and body weight and morphology of the heart, liver, spleen, lung and kidney and other vital organs. In pyrogen test: the maximum temperature in three rabbits reached 0.4 ℃ (< 0.6 ℃), and the sum was 0.7 ℃ (< 1.3 ℃). In intradermal reaction test: the rabbit erythema and edema reaction scores both were 0. To conclude, 125I irradiated PEEK particle chain exhibits a good bio-safety, presenting no acute toxicity, pyogen reaction and intradermal reaction. 

Key words: Tissue Engineering, Biocompatible Materials, Iodine

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