壳聚糖/胶原/蜂蜜纳米纤维膜的制备及性能评价及其在创伤敷料中的应用。
Production and performance evaluation of chitosan/collagen/honey nanofibrous membranes for wound dressing applications.
机构信息
Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C., 83304 Hermosillo, Sonora, Mexico.
Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C., 83304 Hermosillo, Sonora, Mexico.
出版信息
Int J Biol Macromol. 2024 Aug;275(Pt 2):133809. doi: 10.1016/j.ijbiomac.2024.133809. Epub 2024 Jul 11.
Persistent bacterial infections are the leading risk factor that complicates the healing of chronic wounds. In this work, we formulate mixtures of polyvinyl alcohol (P), chitosan (CH), collagen (C), and honey (H) to produce nanofibrous membranes with healing properties. The honey effect at concentrations of 0 % (PCH and PCHC), 5 % (PCHC-5H), 10 % (PCHC-10H), and 15 % (PCHC-15H) on the physicochemical, antibacterial, and biological properties of the developed nanofibers was investigated. Morphological analysis by SEM demonstrated that PCH and PCHC nanofibers had a uniform and homogeneous distribution on their surfaces. However, the increase in honey content increased the fiber diameter (118.11-420.10) and drastically reduced the porosity of the membranes (15.79-92.62 nm). The addition of honey reduces the water vapor transmission rate (WVTR) and the adsorption properties of the membranes. Mechanical tests revealed that nanofibers were more flexible and elastic when honey was added, specifically the PCHC-15H nanofibers with the lowest modulus of elasticity (15 MPa) and the highest elongation at break (220 %). Also, honey significantly improved the antibacterial efficiency of the nanofibers, mainly PCHC-15H nanofibers, which presented the best bacterial reduction rates against Staphylococcus aureus (59.84 %), Pseudomonas aeruginosa (47.27 %), Escherichia coli (65.07 %), and Listeria monocytogenes (49.58 %). In vitro tests with cell cultures suggest that nanofibers were not cytotoxic and exhibited excellent biocompatibility with human fibroblasts (HFb) and keratinocytes (HaCaT), since all treatments showed higher or similar cell viability as opposed to the cell control. Based on the findings, PVA-chitosan-collagen-honey nanofibrous membranes have promise as an antibacterial dressing substitute.
持续性细菌感染是导致慢性伤口愈合复杂化的主要风险因素。在这项工作中,我们将聚乙烯醇(PVA)、壳聚糖(CH)、胶原蛋白(C)和蜂蜜(H)混合制成具有愈合性能的纳米纤维膜。研究了蜂蜜在 0%(PCH 和 PCHC)、5%(PCHC-5H)、10%(PCHC-10H)和 15%(PCHC-15H)浓度下对所开发纳米纤维的物理化学、抗菌和生物学性能的影响。SEM 形貌分析表明,PCH 和 PCHC 纳米纤维表面分布均匀且均匀。然而,随着蜂蜜含量的增加,纤维直径增加(118.11-420.10nm),膜的孔隙率急剧降低(15.79-92.62nm)。添加蜂蜜会降低水蒸气透过率(WVTR)和膜的吸附性能。力学测试表明,添加蜂蜜会使纳米纤维更具柔韧性和弹性,特别是弹性模量最低(15MPa)和断裂伸长率最高(220%)的 PCHC-15H 纳米纤维。此外,蜂蜜显著提高了纳米纤维的抗菌效率,特别是 PCHC-15H 纳米纤维,对金黄色葡萄球菌(59.84%)、铜绿假单胞菌(47.27%)、大肠杆菌(65.07%)和单核细胞增生李斯特菌(49.58%)的抑菌率最高。细胞培养的体外试验表明,纳米纤维无细胞毒性,与人成纤维细胞(HFb)和角质形成细胞(HaCaT)具有极好的生物相容性,因为所有处理的细胞活力都高于或与细胞对照相似。基于这些发现,PVA-壳聚糖-胶原蛋白-蜂蜜纳米纤维膜有望成为一种抗菌敷料替代品。