中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (52): 8444-8449.doi: 10.3969/j.issn.2095-4344.2015.52.015

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

微孔真空多聚糖止血微球体内降解与生物安全性

杜宝堂1,史 跃2,何远清3,殷文静3,王 颖2   

  1. 1江苏奥科生物科技有限公司,江苏省镇江市  2120032解放军第97医院介入放射科,江苏省徐州市  2210043江苏大学实验动物中心,江苏省镇江市  212002
  • 收稿日期:2015-11-09 出版日期:2015-12-17 发布日期:2015-12-17
  • 通讯作者: 史跃,副主任医师,解放军第97医院介入放射科,江苏省徐州市 221004
  • 作者简介:杜宝堂,男,1965年生,汉族,江苏省南京市人,1996年南京医科大学毕业,博士,教授,主要从事生物医药研究。
  • 基金资助:

    南京军区医学科技创新重点资助项目(2014ZD15)

In vivo degradation and biological safety of microporous vacuum polysaccharide hemostatic microspheres

Du Bao-tang1, Shi Yue2, He Yuan-qing3, Yin Wen-jing3, Wang Ying2   

  1. 1Jiangsu AOKE Biomedical Technology Co., Ltd., Zhenjiang 212003, Jiangsu Province, China; 2Department of Interventional Radiology, the 97th Hospital of Chinese PLA, Xuzhou 221004, Jiangsu Province, China; 3Centre of Experimental Animal, Jiangsu University, Zhenjiang 212002, Jiangsu Province, China
  • Received:2015-11-09 Online:2015-12-17 Published:2015-12-17
  • Contact: Shi Yue, Associate chief physician, Department of Interventional Radiology, the 97th Hospital of Chinese PLA, Xuzhou 221004, Jiangsu Province, China
  • About author:Du Bao-tang, M.D., Professor, Jiangsu AOKE Biomedical Technology Co., Ltd., Zhenjiang 212003, Jiangsu Province, China
  • Supported by:

    the Medical and Science Technology Innovation Plan of Nanjing Military Region, No. 2014ZD15

摘要:

背景:微孔真空多聚糖止血微球是一种具有自主知识产权的可吸收高分子止血材料,它来源于变性马铃薯植物淀粉,经特殊加工工艺制备而成。
目的:将微孔真空多聚糖止血微球埋植于大鼠体内,观察止血微球在体内降解情况,检测体液各项安全性指标。
方法:将0.1-0.2 g微孔真空多聚糖止血微球埋植于12只大鼠左侧脊柱皮下组织内,分别于植入后1,3,7,14 d,观察止血微球在组织内降解情况。实验另取15只大鼠,5只为对照组正常饲养,将另外10只麻醉,在脊柱两侧做2道切口,长约5 cm,深至肌层0.3 cm,在切口喷撤适量止血微球覆盖整个创面,缝合切口,正常饲养14 d,观察大鼠外观体征、行为活动、排泄、摄食情况,进行体液各项指标检测。最后解剖大鼠,观察主要器官的大体形态及颜色变化。
结果与结论:埋植大鼠体内的微孔真空多聚糖止血微球7 d完全降解吸收。切口喷撤适量止血微球后,大鼠生命体征正常;血液及尿液检查各项生化指标均正常;肝、脾、脑、肾等主要器官大体形态及颜色均未发现明显异常变化。结果证实,微孔真空多聚糖止血微球可被体内的淀粉酶酶解为单糖,在体内7 d完全降解吸收,对组织器官无任何毒副反应。 

关键词: 生物材料, 材料相容性, 微孔真空多聚糖, 高分子材料, 可吸收, 马铃薯淀粉, 降解, 大鼠

Abstract:

BACKGROUND: Microporous vacuum polysaccharide hemostatic microspheres are derived from degenerated potato plant starch and prepared through special processing. It is an ideal absorbable polymer styptic material with independent intellectual property rights. OBJECTIVE: To observe the degradation of microporous vacuum polysaccharide hemostatic microspheres and detect the safety indicators of body fluids by implanting microporous vacuum polysaccharide hemostatic microspheres in rats.
METHODS: 0.1-0.2 g microporous vacuum polysaccharide hemostatic microspheres were implanted  subcutaneously on the left side of the spine in 12 rats. At the 1st, 3rd, 7th and 14th days after implantation, 
the degradation of microporous vacuum polysaccharide hemostatic microspheres in the tissue was observed. Another 15 rats were selected, of which 5 rats were taken as the control group and fed normally, and 10 rats were subjected to anesthesia. Two incisions were made on both sides of the spine, about 5 cm, deep into the muscular layer of 0.3 cm. The right amount of hemostatic microspheres were sprayed on the incisions and covered the entire wound, then the incisions were sutured. The 10 rats were raised normally for 14 days. The various indicators of body fluids such as appearance features, activities, excretion, feeding were detected. Finally, the rats were dissected, and the gross morphology and color changes of main organs were observed.
RESULTS AND CONCLUSIONS: The microporous vacuum polysaccharide hemostatic microspheres buried in rats were completely degraded and absorbed within 7 days. After spraying the right amount of microporous vacuum polysaccharide hemostatic microspheres on the incision, the vital signs and biochemical indicators, such as blood and urine tests were all normal. The gross morphology and color of main organs such as liver, spleen, brain and kidney were not found significant anomalies. These results demonstrate that microporous vacuum polysaccharide hemostatic microspheres can be degraded into monosaccharide by amylase and can be completely degraded and absorbed within 7 days, without any side effects to tissues and organs. 

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