当前位置: X-MOL 学术Biomater. Adv. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A multifunctional nanocomposite spray dressing of Kappa-carrageenan-polydopamine modified ZnO/L-glutamic acid for diabetic wounds
Biomaterials Advances ( IF 7.9 ) Pub Date : 2020-03-12 , DOI: 10.1016/j.msec.2020.110837
Shima Tavakoli , Hamidreza Mokhtari , Mahshid Kharaziha , Ahmad Kermanpur , Ardeshir Talebi , Jamal Moshtaghian

Sprayable bioadhesives with exceptional properties were developed for application in wound healing. In this study, a visible light-crosslinkable nanocomposite bioadhesive hydrogel with multifunctional properties was proposed. While methacrylated Kappa-carrageenan (KaMA), mimicking the natural glycosaminoglycan was applied as the hydrogel matrix, various concentrations of polydopamine modified ZnO (ZnO/PD) nanoparticles (0, 0.5, 1 and 2 wt%) was loaded in it to improve its mechanical, antibacterial and cellular properties. Moreover, L-glutamic acid was incorporated in the nanocomposite hydrogel network to accelerate wound healing. The nanocomposite hydrogels revealed significant mechanical property and recovery ability, comparable elasticity with human skin and great adhesiveness. For instance, the tensile strength of KaMA hydrogel enhanced from 64.1 ± 10 to 80.3 ± 8 kPa and elongation jumped from 20 ± 4% to 61 ± 5% after incorporation of 1 wt% ZnO/PD nanoparticles. The nanocomposite hydrogels demonstrated effectual blood clotting ability and biocompatibility, >95% cell viability after 3 days of incubation. In vivo experiments also suggested that L-glutamic acid loaded nanocomposite hydrogel considerably accelerated wound healing with superior granulation tissue thickness than control in a full-thickness skin defect model. Taken together, this visible-light crosslinking nanocomposite hydrogel with significant properties could be used to spray on a wound area to eliminate wound infection and accelerate wound healing process.



中文翻译:

κ-角叉菜胶-聚多巴胺修饰的ZnO / L-谷氨酸多功能纳米复合喷雾敷料治疗糖尿病伤口

具有优异性能的可喷涂生物粘合剂被开发用于伤口愈合。在这项研究中,提出了一种具有多功能特性的可见光可交联纳米复合生物粘附水凝胶。模仿天然糖胺聚糖的甲基丙烯酸化Kappa-carrageenanan(KaMA)被用作水凝胶基质时,各种浓度的聚多巴胺修饰的ZnO(ZnO / PD)纳米颗粒(0、0.5、1和2 wt%)被填充其中以改善其机械,抗菌和细胞特性。此外,将L-谷氨酸掺入纳米复合水凝胶网络中以加速伤口愈合。纳米复合水凝胶显示出显着的机械性能和恢复能力,与人皮肤相当的弹性和良好的粘合性。例如,KaMA水凝胶的拉伸强度从64增强。在掺入1 wt%的ZnO / PD纳米颗粒后,伸长率从1±10增至80.3±8 kPa,伸长率从20±4%跃升至61±5%。纳米复合水凝胶在孵育3天后显示出有效的血液凝固能力和生物相容性,> 95%的细胞活力。体内实验还表明,在全层皮肤缺损模型中,负载L-谷氨酸的纳米复合水凝胶可大大加速创面愈合,并具有比对照组更好的肉芽组织厚度。综上所述,这种具有显着性能的可见光交联纳米复合水凝胶可用于喷涂在伤口区域,以消除伤口感染并加速伤口愈合过程。纳米复合水凝胶在孵育3天后显示出有效的血液凝固能力和生物相容性,> 95%的细胞活力。体内实验还表明,在全层皮肤缺损模型中,负载L-谷氨酸的纳米复合水凝胶可大大加速创面愈合,并具有比对照组更好的肉芽组织厚度。综上所述,这种具有显着性能的可见光交联纳米复合水凝胶可用于喷涂在伤口区域,以消除伤口感染并加速伤口愈合过程。纳米复合水凝胶在孵育3天后显示出有效的血液凝固能力和生物相容性,> 95%的细胞活力。体内实验还表明,在全厚度皮肤缺损模型中,负载L-谷氨酸的纳米复合水凝胶可大大加速创面愈合,并具有比对照组更好的肉芽组织厚度。综上所述,这种具有显着性能的可见光交联纳米复合水凝胶可用于喷涂在伤口区域,以消除伤口感染并加速伤口愈合过程。体内实验还表明,在全厚度皮肤缺损模型中,负载L-谷氨酸的纳米复合水凝胶可大大加速创面愈合,并具有比对照组更好的肉芽组织厚度。综上所述,这种具有显着性能的可见光交联纳米复合水凝胶可用于喷涂在伤口区域,以消除伤口感染并加速伤口愈合过程。体内实验还表明,在全层皮肤缺损模型中,负载L-谷氨酸的纳米复合水凝胶可大大加速创面愈合,并具有比对照组更好的肉芽组织厚度。综上所述,这种具有显着性能的可见光交联纳米复合水凝胶可用于喷涂在伤口区域,以消除伤口感染并加速伤口愈合过程。

更新日期:2020-03-12
down
wechat
bug