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| 1 | 静电纺丝素纳米纤维对大鼠深Ⅱ度烧伤创面愈合的作用显示文摘目的探讨静电纺丝素纳米纤维对大鼠深Ⅱ度烧伤创面愈合的影响及作用机制。方法采用静电纺丝技术制备丝素纳米纤维,建立SD大鼠深Ⅱ度烧伤创面模型,将60只雄性SD大鼠随机分成静电纺丝素纳米纤维治疗组(实验组)和对照组,实验组创面予以静电纺丝素纳米纤维敷料覆盖,对照组创面以无菌纱布覆盖。观察大鼠烫伤创面大体愈合情况,苏木精-伊红染色观察创面病理学变化,免疫组织化学法检测创面内血小板-内皮细胞粘附分子(platelet and endothelial cell adhesion molecule 1,PECAM-1/CD31)和Ki-67蛋白表达情况变化。结果在烫伤后第4、8、14、21天观察到,实验组较对照组创面愈合时间缩短,创面愈合率升高(均P<0.01),创面组织中CD31和Ki-67的表达增加。结论静电纺丝素纳米纤维能够上调大鼠深Ⅱ度烧伤创面中CD31和Ki-67的表达,促进创面血管新生及细胞增殖,具有促进创面愈合的作用。 | 陈华 刘宁 沙娜 单爱军 刘海华 | 2021 | 华中科技大学学报(医学版)2021,50,2: | 6 |
| 2 | 聚乳酸/细菌纤维素/壳聚糖多级结构纤维敷料的制备与表征显示文摘为构建能够模拟细胞外基质多级结构的理想的伤口修复材料,本文开发了聚乳酸/细菌纤维素/壳聚糖多级结构纤维敷料.选用静电纺丝技术制备的微米级聚乳酸纤维作为敷料的“骨架”以发挥支撑作用,纳米级的细菌纤维素纤维作为“填充”以模拟细胞外基质的纳米纤维状结构,壳聚糖溶液作为“黏合剂”;通过均质分散-冷冻干燥技术,制备聚乳酸/细菌纤维素/壳聚糖多级结构纤维敷料.实验表明:该敷料同时具有微米级的纤维结构(0.8~1.4μm)以及纳米尺度的纤维结构(20~90 nm),高度模拟了细胞外基质的多级结构;该敷料具有良好的吸水性(吸水率>6 790%)和透湿气性(>10 000 g/(m^(2)·d)),可通过提高壳聚糖和细菌纤维素纳米纤维的比例使敷料具有良好的保湿性和体积稳定性;该敷料具有良好的生物相容性,贴敷弯曲后仍能保持使用前的形状,具有良好的使用舒适性. | 朱吉昌 张成霖 梅瑞娴 余西 王利环 于晖 | 2022 | 五邑大学学报(自然科学版)2022,36,2: | 2 |
| 3 | Hierarchical macro-microporous WPU-ECM scaffolds combined with Microfracture Promote in Situ Articular Cartilage Regeneration in Rabbits显示文摘Tissue engineering provides a promising avenue for treating cartilage defects.However,great challenges remain in the development of structurally and functionally optimized scaffolds for cartilage repair and regeneration.In this study,decellularized cartilage extracellular matrix(ECM)and waterborne polyurethane(WPU)were employed to construct WPU and WPU-ECM scaffolds by water-based 3D printing using low-temperature deposition manufacturing(LDM)system,which combines rapid deposition manufacturing with phase separation techniques.The scaffolds successfully achieved hierarchical macro-microporous structures.After adding ECM,WPU scaffolds were markedly optimized in terms of porosity,hydrophilia and bioactive components.Moreover,the optimized WPU-ECM scaffolds were found to be more suitable for cell distribution,adhesion,and proliferation than the WPU scaffolds.Most importantly,the WPU-ECM scaffold could facilitate the production of glycosaminoglycan(GAG)and collagen and the upregulation of cartilage-specific genes.These results indicated that the WPU-ECM scaffold with hierarchical macro-microporous structures could recreate a favorable microenvironment for cell adhesion,proliferation,differentiation,and ECM production.In vivo studies further revealed that the hierarchical macro-microporous WPU-ECM scaffold combined with the microfracture procedure successfully regenerated hyaline cartilage in a rabbit model.Six months after implantation,the repaired cartilage showed a similar histological structure and mechanical performance to that of normal cartilage.In conclusion,the hierarchical macro-microporous WPU-ECM scaffold may be a promising candidate for cartilage tissue engineering applications in the future. | Mingxue Chen YangYang Li Shuyun Liu Zhaoxuan Feng Hao Wang Dejin Yang Weimin Guo Zhiguo Yuan Shuang Gao Yu Zhang Kangkang Zha Bo Huang Fu Wei Xinyu Sang Qinyu Tian Xuan Yang Xiang sui Yixin Zhou Yufeng Zheng Quanyi Guo | 2021 | Bioactive Materials2021,6,7: | 1 |
| 4 | 3D聚氨酯/聚乙烯醇缩丁醛纳米纤维海绵的制备显示文摘文章制备了具有海绵结构的聚氨酯(PU)/聚乙烯醇缩丁醛(PVB)三维(3D)纳米纤维多孔结构。通过SEM、XRD和FTIR对其形貌和结构进行表征,并通过拉伸和压缩实验对其力学性能进行研究。SEM结果显示,不同PU和PVB质量比的三维结构在纤维形态和纤维间交联方面存在差异。XRD和FTIR结果证明了3D纳米纤维海绵中PU和PVB聚合物分子的存在,并明确了PU分子和PVB分子间存在交联。实验表明,当PU和PVB质量比为7︰3时,3D纳米纤维海绵中纤维形貌好,结构稳定,断裂强力为2.2 MPa,断裂伸长为175.5%。该多孔纤维轻质海绵具有优异的压缩回复性能,可应用于不同的领域。 | Tavonga Trevor Chadyagondo 陈强 施静雅 李妮 | 2021 | 丝绸2021,58,10: | 1 |
| 5 | Electrical Stimulation Enabled via Electrospun Piezoelectric Polymeric Nanofibers for Tissue Regeneration显示文摘Electrical stimulation has demonstrated great effectiveness in the modulation of cell fate in vitro and regeneration therapy in vivo.Conventionally,the employment of electrical signal comes with the electrodes,battery,and connectors in an invasive fashion.This tedious procedure and possible infection hinder the translation of electrical stimulation technologies in regenerative therapy.Given electromechanical coupling and flexibility,piezoelectric polymers can overcome these limitations as they can serve as a self-powered stimulator via scavenging mechanical force from the organism and external stimuli wirelessly.Wireless electrical cue mediated by electrospun piezoelectric polymeric nanofibers constitutes a promising paradigm allowing the generation of localized electrical stimulation both in a noninvasive manner and at cell level.Recently,numerous studies based on electrospun piezoelectric nanofibers have been carried out in electrically regenerative therapy.In this review,brief introduction of piezoelectric polymer and electrospinning technology is elucidated first.Afterward,we highlight the activating strategies(e.g.,cell traction,physiological activity,and ultrasound)of piezoelectric stimulation and the interaction of piezoelectric cue with nonelectrically/electrically excitable cells in regeneration medicine.Then,quantitative comparison of the electrical stimulation effects using various activating strategies on specific cell behavior and various cell types is outlined.Followingly,this review explores the present challenges in electrospun nanofiber-based piezoelectric stimulation for regeneration therapy and summarizes the methodologies which may be contributed to future efforts in this field for the reality of this technology in the clinical scene.In the end,a summary of this review and future perspectives toward electrospun nanofiber-based piezoelectric stimulation in tissue regenerationare elucidated. | Guangbo Xia Beibei Song Jian Fang | 2022 | Research2022,,4: | 1 |
| 6 | 新型静电纺丝纳米支架敷料对大鼠皮肤创伤的作用显示文摘目的观察新型静电纺丝纳米支架敷料对皮肤创面的修复作用。方法应用静电纺丝技术制备壳聚糖(CS)/聚己内酯(PCL)纳米支架敷料。选取健康大鼠,制备皮肤损伤创面,分为实验组(应用新型静电纺丝纳米支架敷料)及对照组(应用凡士林油纱)。观察两组创面在术后第3、5、7、10、14天的愈合形态并计算愈合率,于术后第7、14天分别取创面组织进行组织学观察。结果术后第3、5、7、10、14天,应用新型静电纺丝纳米支架敷料的实验组创面愈合率均显著高于对照组,差异具有统计学意义(F=222.42~463.42,P<0.05)。组织学观察显示,与对照组比较,实验组毛细血管增生更明显,肉芽组织排列更致密。结论新型静电纺丝纳米支架敷料具有促进皮肤创面愈合的作用。 | 苏鲁安 冷向锋 何才 周子艺 刘永娟 陈振雨 | 2022 | 青岛大学学报(医学版)2022,58,1: | 1 |
| 7 | 电流体力学技术在纳米载药系统中的研究应用显示文摘电流体力学研究电场对流体的作用,在实际应用中,根据喷射溶液在电场力的作用下最终形成的是粒子还是纤维,可分为静电喷雾和静电纺丝。电流体力学技术的优点是工艺简单、重复性好,产品具有良好的加工性和可控性,制备过程中不需要加热,药物稳定性好,因此广泛应用于医药领域。本文介绍了电流体力学技术的基本原理、装置类型及影响因素,综述了其在纳米载药系统中的应用,以期为纳米技术药物的深入研究与开发提供参考。 | 孙楚钧 李梦豪 刘磊 王晓晖 杜青 | 2022 | 中国新药杂志2022,31,10: | 1 |
| 8 | 基于Hofmeister效应改性明胶静电纺丝纤维膜的制备与表征显示文摘基于Hofmeister效应通过静电纺丝法在聚乳酸-羟基乙酸共聚物膜上复合了明胶纤维膜,借助扫描电子显微镜、傅里叶变换红外光谱仪与差示扫描量热仪研究了明胶与柠檬酸钾的质量浓度对明胶纤维膜的形貌、分子间相互作用以及热性能的影响。结果表明:当明胶水溶液质量浓度为140 g/L时,通过静电纺丝能够得到表面光滑、直径均一的明胶纤维膜。随着柠檬酸钾质量浓度的增加,明胶纤维的直径显著增加,当柠檬酸钾的质量浓度增加到40 g/L时,明胶的纤维结构消失,形成了均一致密的薄膜结构。柠檬酸根是一种强kosmotropic离子,能够促进明胶分子链脱水,增强蛋白质分子间的氢键作用,破坏明胶分子的有序结构,降低蛋白质的结晶度。 | 宋凯 袁文博 王旭杰 乔从德 | 2023 | 皮革科学与工程2023,33,4: | 0 |
| 9 | 负载马桑叶提取物纳米纤维膜的制备及其研究显示文摘目的本研究主要对制备的新型负载马桑叶提取物的静电纺丝膜进行性能评价,为该敷料的进一步开发研究奠定基础。方法采用静电纺丝技术制备了负载马桑叶提取物的PCL纳米纤维膜,观察了纳米纤维表面形貌和结构,并评价其抗菌性及其生物相容性。结果负载马桑提取物的纳米纤维复合膜的制备符合要求并显示良好的形貌;负载马桑提取物的PCL/马桑叶提取物纳米纤维膜对L929细胞无毒害作用。结论负载马桑叶提取物的PCL纳米纤维膜具有良好的抗菌性,可作为一种新型伤口敷料。 | 李茹冰 赵月 李宇璐 魏照星 谷小红 于丽娟 刘文婷 万华印 | 2023 | 今日药学2023,33,2: | 0 |
| 10 | 纳米纤维膜/壳聚糖海绵复合敷料的制备及性能显示文摘为开发一种应用于皮肤伤口的促止血修复医用敷料,采用静电纺丝技术结合冷冻干燥法制备聚己内酯(PCL)/明胶(GT)纳米纤维膜与壳聚糖(CS)-多巴胺(DA)海绵相复合的双层敷料。对复合材料的微观形貌、化学结构、凝血性能、血小板黏附性能及大鼠伤口愈合效果进行了研究。结果表明:与纱布和市售明胶海绵相比,纳米纤维膜/CS-DA海绵复合材料的凝血指数更低,且可促进血小板黏附,具有良好的促凝血性能;复合材料及担载基质细胞衍生因子-1α(SDF-1α)的复合材料可促进大鼠全层皮肤缺损伤口闭合,显示出促伤口愈合的潜力。 | 杨磊 董玉苹 李晓然 | 2023 | 上海纺织科技2023,51,12: | 0 |