中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (25): 3996-4001.doi: 10.3969/j.issn.2095-4344.2015.25.012

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

新型输尿管支架材料的生物相容性

刘  敏1,颜  伟1,李慧峰1,朱同玉2   

  1. 1复旦大学附属中山医院青浦分院泌尿外科,上海市  201700;
    2复旦大学附属中山医院泌尿外科,上海市  200032
  • 出版日期:2015-06-18 发布日期:2015-06-18
  • 通讯作者: 朱同玉,博士,教授,主任医师,复旦大学附属中山医院泌尿外科,上海市 200032
  • 作者简介:刘敏,男,1962年生,汉族,上海市人,1985年上海第二医学院毕业,硕士,副主任医师,主要从事泌尿外科临床工作和医院党务工作。

Liu Min, Master, Associate chief physician, Department of Urology, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Shanghai 201700, China

Liu Min1, Yan Wei1, Li Hui-feng1, Zhu Tong-yu2   

  1. 1Department of Urology, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Shanghai 201700, China; 
    2Department of Urology, Zhongshan Hospital Affiliated to Fudan University, Shanghai 200032, China
  • Online:2015-06-18 Published:2015-06-18
  • Contact: Zhu Tong-yu, M.D., Professor, Chief physician, Department of Urology, Zhongshan Hospital Affiliated to Fudan University, Shanghai 200032, China
  • About author:Liu Min, Master, Associate chief physician, Department of Urology, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Shanghai 201700, China

摘要:

背景:有研究表明,聚乙烯高分子合成的输尿管支架在体内实验中具有良好的生物相容性,但实验发现其毒副作用,诱导机体产生的炎症、热原、过敏反应均较明显,故对于新研发的L-乳酸、乙交酯、硫酸钡合成的新型输尿管支架在生物相容性、毒副作用、机体炎症反应等方面的探索是实验研究的重点内容。
目的:通过对临床上使用的聚乙烯高分子合成输尿管支架和L-乳酸、乙交酯、硫酸钡合成的新型输尿管支架在细胞毒性试验、动物体植入后引起的炎症反应以及过敏反应、热原反应、致死率等生物相容性方面的比较,为临床上引入新型输尿管支架材料提供一定的参考依据。
方法:实验分为3组,空白对照组不作任何处理,使用正常培养基培养;新型材料组细胞采用L-乳酸、乙交酯、硫酸钡合成材料浸提液进行培养;聚乙烯组细胞采用聚乙烯浸提液进行培养。
结果与结论:活细胞数目检测结果显示,在尿道上皮细胞培养皿中加入两种输尿管支架浸提液后,与空白对照组相比,毒性反应均明显增强(P < 0.05),但两组毒性差异无显著性意义。苏木精-伊红染色结果显示,将两种材料植入大鼠体内2,6周后,肌肉组织均有明显的炎性浸润、中性粒细胞和嗜酸性粒细胞增加,但植入新型材料组的炎性浸润和组织损伤明显少于植入聚乙烯组(P < 0.05)。酶联免疫吸附试验结果显示,植入两种材料6周后,大鼠血清中炎性因子白细胞介素10,23的含量均明显增高(P < 0.05),但植入新型材料组的炎性因子表达量明显低于植入聚乙烯组(P < 0.05)。支架植入6周后,新型材料组的大鼠在实验过程中出现过敏反应和热原反应的数量均少于聚乙烯组。结果证实,L-乳酸、乙交酯、硫酸钡合成的新型输尿管支架材料能减少组织对于材料的炎症反应、过敏反应、热原反应,具有比聚乙烯合成材料更好的生物相容性。

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

关键词: 生物材料, 材料相容性, 输尿管支架, L-乳酸、乙交酯、硫酸钡合成材料, 聚乙烯合成材料, 生物相容性, 毒副作用, 细胞增殖率, 炎性因子, 过敏反应, 热原反应, 组织损伤

Abstract:

BACKGROUND: Studies have shown that polyethylene polymer-synthesized ureteral stents have good biocompatibility in vivo, but the side effects are found to induce the body to produce inflammatory, pyrogenic, and allergic reactions. Therefore, studies have mainly aimed to explore the biocompatibility, toxic and side effects, inflammation of newly developed ureteral stents synthesized by L-lactic acid, glycolide, and barium sulfate.
OBJECTIVE: Based on the biocompatibility comparisons on cell toxicity test, inflammatory reaction, allergic reaction, pyrogen reaction and mortality after implantation between the usage of polyethylene material and L-lactic acid, glycolide, barium sulphate syntheses, to provide a better reference to introduce a new clinical ureteral stent material.
METHODS: There were three groups in the experiment: blank control group, new material group, polyethylene group. Cells were cultured in normal medium, leach liquid of L-lactic acid, glycolide, barium sulphate syntheses and leach liquid of polyethylene, respectively.
RESULTS AND CONCLUSION: The toxic effects were significantly enhanced in the urethral epithelial cells that grew in the leach liquids of two materials compared with the blank control group (P < 0.05), but the two kinds of materials had no significant statistical difference in the toxicity test (P > 0.05). Hematoxylin-eosin staining results showed that there were obvious inflammatory infiltrations in muscle tissue and the number of neutrophils and eosinophils were increased when the two kinds of materials were implanted in the rats for 2 and 6 weeks (P < 0.05), but the inflammatory infiltration and tissue damage in the new material group was less than that in the polyethylene group (P < 0.05). ELISA results showed that the serum concentrations of interleukin-10 and interleukin-23 were significantly increased when the two kinds of materials were implanted in the rats for 6 weeks (P < 0.05), but the content of inflammatory cytokines in the new material group was less than that in the polyethylene group (P < 0.05). In the new material group, there was only one rat that developed allergic reaction and there was no pyrogen reaction or death; however, in the polyethylene group, there were three rats with presence of allergic reaction and one rat with pyrogen reaction but no death. These findings indicate that the new ureteral stent material synthesized with L-lactic acid, glycolide and barium sulphate can reduce inflammation reactions, allergic reactions and pyrogen reactions to the body, and has better biocompatibility than polyethylene composite material. 

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

Key words: Tissue Engineering, Biocompatible Materials, Ureter, Stents

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