中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (34): 5480-5484.doi: 10.3969/j.issn.2095-4344.2015.34.014

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

聚L-乳酸合成新型烧伤材料的生物相容性

邓立欢   

  1. 惠州市第三人民医院烧伤外科,广东省惠州市  516002
  • 出版日期:2015-08-20 发布日期:2015-08-20
  • 作者简介:邓立欢,男,1984年生, 广西壮族自治区南宁市人,壮族,硕士,主要从事组织工程皮肤、外科学研究。

Biocompatibility of poly-L-lactic acid, a new synthetic material for skin burn

Deng Li-huan   

  1. Department of Burn Surgery, Third People’s Hospital of Huizhou, Huizhou 516002, Guangdong Province, China
  • Online:2015-08-20 Published:2015-08-20
  • About author:Deng Li-huan, Master, Department of Burn Surgery, Third People’s Hospital of Huizhou, Huizhou 516002, Guangdong Province, China

摘要:

背景:最近有研究表明,高分子聚合物聚L-乳酸具有很好的生物相容性,可直接参与人体代谢且无任何不良反应,是一种可用作生物支架的高分子材料。

目的:验证高分子聚合物聚L-乳酸的生物相容性。

方法:检测胶原复合物及聚L-乳酸的吸湿性能。分别以正常HDMEM培养基、HDMEM培养基+二甲基亚砜、HDMEM培养基+胶原复合物浸提液、HDMEM培养基+聚L-乳酸浸提液培养C3H10T1/2细胞,72 h后观察细胞形态变化。MTT法检测聚L-乳酸浸提液、二甲基亚砜、胶原复合物浸提液对C3H10T1/2细胞的毒性。在兔血中分别加入生理盐水、蒸馏水、聚L-乳酸浸提液及胶原复合物浸提液,检测溶血度。通过兔耳缘静脉分别注射生理盐水、聚L-乳酸浸提液、二甲基亚砜及胶原复合物浸提液,观察过敏反应、热源反应。将胶原复合物及聚L-乳酸分别植入兔背部皮下,4周后检测血清中炎性因子白细胞介素10和白细胞介素23的水平。

结果与结论:胶原复合材料单位质量和单位面积的吸湿率均明显低于聚L-乳酸材料(P < 0.05)。在聚L-乳酸浸提液中培养的C3H10T1/2细胞生长状态良好,细胞相对增殖率高,材料毒性为1级;聚L-乳酸材料溶血率较低,无过敏反应及热源反应,植入体内后的炎症反应低于胶原复合材料(P < 0.05)。证实聚L-乳酸新型皮肤烧伤支架材料具有良好的吸收伤口液体性能及生物相容性。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

关键词: 生物材料, 材料相容性, 胶原复合材料, 聚L-乳酸合成材料, 皮肤支架, 生物相容性

Abstract:

BACKGROUND: Recent studies have shown that poly-L-lactic acid (PLLA) polymer has good biocompatibility and can be directly involved in human metabolism without any side effects, which is a polymer material that can be used as bioscaffolds.

OBJECTIVE: To explore the biocompatibility of PLLA.

METHODS: The moisture absorption rate of collagen composite and PLLA was detected. Cell morphology observation was carried to detect the growth state of C3H10T1/2 cells that grew in normal HDMEM medium, HDMEM medium+dimethyl sulfoxide, HDMEM medium+collagen composite extract, HDMEM medium+PLLA extract for 72 hours. MTT kit was used to detect the relative proliferation rate of the C3H10T1/2 cell lines that grew in the above-mentioned media and the toxicity evaluations were based on the material toxicity criteria. Hemolysis degree was measured in rabbit blood samples containing normal saline, distilled water, PLLA extract and collagen composite extract. The allergic reaction and pyrogen reaction in rabbits were observed through injection of normal saline, distilled water, PLLA extract and collagen composite extract via the ear vein. Collagen composite and PLLA were respectively implanted subcutaneously into the rabbits, and after 4 weeks, the levels of interleukin-10 and interleukin 23 in serum were detected.

RESULTS AND CONCLUSION: The moisture absorption rates per unit area and per unit mass of collagen composite material were lower than those of PLLA synthetic materials (P < 0.05). C3H10T1/2 cells grew well in the PLLA extract, with a higher relative growth rate and lower cytotoxicity (grade I). Compared with the collagen composite materials, the PLLA synthetic materials had a lower hemolysis ratio and less inflammatory reactions (P < 0.05); and there were no allergic reaction and pyrogen reaction. These findings indicate that the PLLA scaffold materials for burned skin have good absorbing fluid performance and biocompatibility.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Collagen, Materials Testing, Biocompatible Materials

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