中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (26): 4217-4224.doi: 10.3969/j.issn.2095-4344.1363

• 纳米生物材料 nanobiomaterials • 上一篇    下一篇

仿生聚乳酸/明胶纳米纤维膜修复下肢静脉曲张溃疡

陈洪让1,2,沈  云1,张海涛3,邓坤学3,徐元玲1,代兴亮4,李永生1,章新琼2,徐  弢5
  

  1. 安徽医科大学第一附属医院,1普外科,4神经外科,安徽省合肥市  230022;2安徽医科大学护理学院,安徽省合肥市  230032;3广州迈普再生医学科技股份有限公司,广东省广州市 510663;5清华大学机械工程系,生物制造中心,北京市  100084
  • 收稿日期:2019-04-20
  • 通讯作者: 李永生,副主任医师,安徽医科大学第一附属医院普外科,安徽省合肥市 230022
  • 作者简介:陈洪让,女,1987年生,安徽省合肥市人,汉族,安徽医科大学在读硕士,主要从事血管外科专科工作,以及血管性溃疡修复的相关研究。
  • 基金资助:

    国家自然科学基金项目(81702457),项目负责人:代兴亮;国家高新技术研究与发展规划863项目(2015AA020303),项目负责人:徐弢

Bionic polylactic acid/gelatin nanofiber membrane for repairing varicose ulcers in the lower extremities 

Chen Hongrang1, 2, Shen Yun1, Zhang Haitao3, Deng Kunxue3, Xu Yuanling1, Dai Xingliang4, Li Yongsheng1, Zhang Xinqiong2, Xu Tao
  

  1. 1Department of General Surgery, 4Department of Neurosurgery, First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, China; 2School of Nursing, Anhui Medical Univesity, Hefei 230032, Anhui Province, China; 3Medprin Regenerative Medical Technologies Co., Ltd., Guangzhou 510663, Guangdong Province, China; 5Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
  • Received:2019-04-20
  • Contact: Li Yongsheng, Associate chief physician, Department of General Surgery, First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, China
  • About author:Chen Hongrang, Master candidate, Department of General Surgery, First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, China; School of Nursing, Anhui Medical Univesity, Hefei 230032, Anhui Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81702457 (to DXL); the National High-tech Research and Development Program (863 Program), No. 2015AA020303 (to XT)

摘要:

文章快速阅读:

 

文题释义:
下肢静脉曲张溃疡:是下肢静脉瓣膜功能不全后期严重的并发症,主要是各种病因引发静脉血回流不通畅、血液瘀滞所致,可表现为下肢色素沉着、肿胀、溃烂等皮肤营养障一系列的临床表现,严重时可能需要截肢,中医俗称老烂腿。下肢静脉溃疡创面愈合的时间很长,易反复,是慢性创面常见的种类之一。
纳米纤维膜:指直径介于1-100 nm之间线性生物材料,从广义的概念来说,纳米纤维的直径是低于1 000 nm。此次研究使用的纳米纤维膜是利用静电纺丝技术,结合3D打印平台通过层叠沉积方法生物制造的聚乳酸/明胶纳米纤维膜,具有优越的材料力学特性、良好亲水性和透气性、高度仿生特性,是理想的软组织修复材料。
 
 
背景:受限于有效治疗手段的缺乏,下肢静脉溃疡迁延不愈,容易反复,对患者的生活产生严重影响;动物实验已证实仿生聚乳酸/明胶纳米纤维膜在皮肤缺损组织再生修复中具有明显优势。
目的:观察仿生聚乳酸/明胶纳米纤维膜修复下肢静脉曲张溃疡的效果。
方法:纳入2017年11月至2018年11月安徽医科大学第一附属医院收治的下肢静脉溃疡患者60例,采用随机数字表法分为对照组和试验组,每组30例,所有患者前期均给予清创和基础治疗,对照组给予常规换药,试验组是在常规处理的基础上采用仿生聚乳酸/明胶纳米纤维膜换药。每周记录并比较两组的创面愈合率、愈合时间、换药次数、创面疼痛评分、敷料二次创伤积分、操作难易性、安全性和患者满意度;溃疡创面愈合后6个月,采用温哥华瘢痕评定量表对后期修复效果进行评价。试验已通过安徽医科大学第一附属医院伦理委员会批准,伦理批准号:安医一附伦审-快-PJ2018-01-09。
结果与结论:①试验组换药后28 d的创面愈合率、患者满意度均高于对照组(P < 0.05),创面愈合时间、换药次数、创面疼痛评分、敷料二次创伤积分、操作难易性评分明显低于对照组(P < 0.05);②溃疡创面愈合后6个月,对照组为瘢痕评分明显高于试验组(P < 0.05);③换药期间及创面愈合后6个月,两组均未见肝肾损伤,未发生局部过敏等不良反应;④结果表明仿生聚乳酸/明胶纳米纤维膜是安全、有效的,可显著缩短创面愈合时间、减少换药次数、降低创面换药时的疼痛感和二次创伤、方便临床医护人员使用、提高患者舒适度和满意度。

关键词: 纳米纤维膜, 明胶/聚乳酸, 下肢静脉曲张, 溃疡, 3D打印, 静电纺丝, 创面, 愈合

Abstract:

BACKGROUND: Insufficient effective treatments lead to protracted course and recurrence of lower extremity venous ulcers, greatly influencing patient’s life. Animal experiments have confirmed that bionic polylactic acid/gelatin nanofiber membrane has advantages in the repair of deficient skin tissue.
OBJECTIVE: To investigate the efficacy of bionic polylactic acid/gelatin nanofiber membrane in the repair of varicose ulcers in the lower extremities.
METHODS: Sixty patients with varicose ulcers in the lower extremities admitted to the First Affiliated Hospital of Anhui Medical University, China from November 2017 to November 2018 were randomly divided into a control group and an experimental group, with 30 cases in each group. All patients were given debridement and basic treatment in the early stage. Patients in the control group received conventional dressing. Patients in the experimental group received bionic polylactic acid/gelatin nanofiber membrane dressing based on conventional dressing. Wound healing rate, healing time, dressing change frequency, wound pain average score, dressing-caused secondary wound score, ease of operation, safety and patient satisfaction were recorded and compared between the two groups every week. At 6 months after wound healing, post-repair effect was evaluated using the Vancouver Scar Rating Scale. This study was approved by the Ethics Committee, First Affiliated Hospital of Anhui Medical University, China (approval No. PJ2018-01-09).
RESULTS AND CONCLUSION: At 28 days after dressing, wound healing rate and patient satisfaction in the experimental group were significantly greater than those in the control group (P < 0.05). Healing time, dressing change frequency, wound pain average score, dressing-caused secondary wound score, and ease of operation in the experimental group were significantly lower than those in the control group (P < 0.05). Six months after wound healing, scale score in the control group was significantly higher than that in the experimental group (P < 0.05). During dressing and 6 months after wound healing, there were no liver and kidney injuries in the two groups. In addition, no reverse reactions such as local allergy were observed in either group. These results suggest that bionic polylactic acid/gelatin nanofiber membrane for repairing ulcers in patients with lower extremity varicose veins is safe and effective. It can greatly shorten the wound healing time, reduce dressing change frequency, mitigate pain and secondary trauma during wound dressing change, and provide the ease of use by clinical medical staff, and improve patient comfort and satisfaction.

Key words: nanofiber membrane, polylactic acid/gelatin, varicose veins of the lower extremities, ulcers, 3D printing, electrospinning, wound, healing

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