中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (10): 1537-1543.doi: 10.12307/2022.200

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

过氧乙酸/乙醇对异体皮性能的影响

胡  凯1,2,陈维明1,2,骆井万1,2,李  淼1,2,汪晶晶1,2,李  矛3,沈亚俊4,陈金发2,白玉龙1,2   

  1. 1常州市亘从生物力学研究中心,江苏省常州市   213003;2上海亚朋生物技术有限公司,上海市   201201;3首都医科大学附属北京同仁医院,北京市   100730;4首都医科大学附属北京口腔医院,北京市   100050
  • 收稿日期:2020-11-05 修回日期:2020-11-06 接受日期:2020-12-07 出版日期:2022-04-08 发布日期:2021-10-25
  • 通讯作者: 白玉龙,常州市亘从生物力学研究中心,江苏省常州市 213003;上海亚朋生物技术有限公司,上海市 201201
  • 作者简介:胡凯,男,1993年生,安徽省安庆市人,汉族,2019年上海师范大学毕业,硕士,主要从事生物医用材料的研究与转化
  • 基金资助:
    2020年上海市科技型中小企业技术创新资金(200H1029400),项目负责人:陈维明

Effect of peracetic acid/ethanol on the properties of allogeneic skin

Hu Kai1, 2, Chen Weiming1, 2, Luo Jingwan1, 2, Li Miao1, 2, Wang Jingjing1, 2, Li Mao3, Shen Yajun4, Chen Jinfa2, Bai Yulong1, 2   

  1. 1Changzhou Gencong Biomechanics Research Center, Changzhou 213003, Jiangsu Province, China; 2Shanghai Yapeng Biotechnology Co., Ltd., Shanghai 201201, China; 3Beijing Tongren Hospital, Capital Medical University, Beijing  100730, China; 4Beijing Dental Hospital, Capital Medical University, Beijing 100050, China
  • Received:2020-11-05 Revised:2020-11-06 Accepted:2020-12-07 Online:2022-04-08 Published:2021-10-25
  • Contact: bai yulong, Changzhou Gencong Biomechanics Research Center, Changzhou 213003, Jiangsu Province, China; Shanghai Yapeng Biotechnology Co., Ltd., Shanghai 201201, China
  • About author:Hu Kai, Master, Changzhou Gencong Biomechanics Research Center, Changzhou 213003, Jiangsu Province, China; Shanghai Yapeng Biotechnology Co., Ltd., Shanghai 201201, China
  • Supported by:
    Technology Innovation Fund for Small and Medium-sized Science and Technology Enterprises in Shanghai in 2020, No. 200H1029400 (to CWM)

摘要: 文题释义:
异体脱细胞真皮基质:取材于人类捐献者的新鲜皮肤,采用物理、化学及生物等方法除去了皮肤的表皮及可引起宿主免疫排斥反应的细胞和脂肪等成分,得到的一种真皮细胞外基质,其具有人类皮肤相似的结构和组成,生物相容性好,具有一定的力学性能,能够用于疝修补、医美等领域。
异体皮敷料:取材于人类捐献者的新鲜皮肤,采用物理、化学及生物等方法除去了皮肤中可引起宿主免疫排斥反应的细胞和脂肪等物质及灭活病原微生物和细菌。异体皮敷料用作烧伤、创伤创面暂时性覆盖,可有效阻隔外界接触,为创面局部提供了一个生理环境,防止创面干燥和过湿,促进正常宿主抗微生物能力和创面愈合能力。因此,异体皮敷料的表皮完整性、无细胞毒性是关键。

背景:过氧乙酸/乙醇是一种理想的动物源及同种异体组织病毒灭活试剂,其对病原微生物杀灭效果显著,但是未见其对异体皮其他性能影响的研究报道。
目的:研究过氧乙酸/乙醇处理对异体皮性能的影响。
方法:配制3种不同浓度的过氧乙酸/乙醇溶液,2.3 g/L过氧乙酸+体积分数24%乙醇(设为P/E-1)、1.8 g/L过氧乙酸+体积分数4.8%乙醇(设为P/E-2)、15.33 g/L过氧乙酸+体积分数24%乙醇(设为P/E-3)。采用不同浓度的过氧乙酸/乙醇溶液分别处理异体皮15,30,45,60 min,通过外观、组织学染色、力学性能、糖胺聚糖含量检测等评价皮肤结构性能变化,并检测经处理后皮肤的化学试剂残留情况和细胞毒性。

结果与结论:①各浓度过氧乙酸/乙醇溶液处理不同时间的异体皮外观无明显差异;②苏木精-伊红染色显示,与未处理的异体皮相比,P/E-1与P/E-2处理15 min后的皮肤细胞外基质结构无明显变化,处理15 min以上的皮肤细胞外基质结构相对疏松,但保留了结构的完整性;P/E-3处理15 min时,皮肤真皮层中出现大孔,处理15 min以上后真皮层出现较多孔洞,细胞外基质结构被严重破坏;③同一浓度溶液处理下,处理时间越长,皮肤的糖胺聚糖含量、拉伸强度和弹性模量越低;相同处理时间下,P/E-1处理组拉伸强度最大、P/E-3处理组最小,P/E-2处理组断裂伸长率最大、P/E-3处理组最小,P/E-3处理组韧性最小;④试剂残留检测显示,过氧乙酸和乙醇可从异体皮去除,残留量在规定的限度要求内,无明显的细胞毒性;⑤结果显示在相同的处理时间下,P/E-1组皮肤的性能及结构与原材料最接近。

https://orcid.org/0000-0003-1694-7779 (胡凯) 
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: 材料, 病毒灭活, 异体皮, 脱细胞真皮基质, 过氧乙酸/乙醇法

Abstract: BACKGROUND: The peracetic acid/ethanol is an ideal reagent for inactivating viruses of animal derived tissues and allogeneic tissues. It is effective in killing pathogenic microorganisms. However, its effect on other properties of allogeneic skin has not been reported.  
OBJECTIVE: To investigate the effect of peracetic acid/ethanol treatment on the performance of allogeneic skins.
METHODS:  Three different concentrations of peracetic acid/ethanol solutions were prepared, which were 2.3 g/L peracetic acid + 24% v/v ethanol (set as P/E-1), 1.8 g/L peracetic acid + 4.8% v/v ethanol (set as P/E-2) and 15.33 g/L peroxyacetic acid + 24% v/v ethanol (set as P/E-3). Allogeneic skin was treated with different concentrations of peracetic acid/ethanol for 15, 30, 45 and 60 minutes, respectively. The structural properties of the skin were evaluated via appearance, histological staining, mechanical test and glycosaminoglycan content test. Besides, chemical reagent residues and cytotoxicity in the treated skin were also studied.  
RESULTS AND CONCLUSION: (1) No significant difference in the epidermal appearance of skin were observed at all investigated concentrations of peracetic acid/ethanol. (2) Hematoxylin-eosin staining showed no obvious changes in the extracellular matrix structure of skin after 15 minutes of P/E-1 and P/E-2 treatment compared with untreated allogeneic skin, and the extracellular matrix structure of skin treated with more than 15 minutes was relatively loose which preserved an integral structure. However, microporous appeared in the dermis while it was treated for 15 minutes, especially after 15 minutes, more holes appeared in the dermis and the extracellular matrix structure was seriously destroyed. (3) The longer the treatment time at the same concentration, the lower the glycosaminoglycan content and the lower the mechanical strength and modulus. With the same treatment time, the tensile strength of the P/E-1 treatment group was the largest, while the P/E-3 treatment group was the smallest; the elongation at break of the P/E-2 treatment group was the largest, while the P/E-3 treatment group was the smallest; and E-3 treatment group had the least toughness. (4) Reagent residual assay showed that peracetic acid and ethanol have been verified to be removed from the allogeneic skin after washing, with low cytotoxicity within limits required. (5) The results displayed under the same processing time, the skins of P/E-1 group have the closest properties and structure compared to the raw material.

Key words: material, virus inactivation, allogeneic skin, acellular dermal matrix, peracetic acid-ethanol

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