Zmejkoski Danica Z, Marković Zoran M, Budimir Milica D, Zdravković Nemanja M, Trišić Dijana D, Bugárová Nikol, Danko Martin, Kozyrovska Natalia O, Špitalský Zdeno, Kleinová Angela, Kuzman Sanja B, Pavlović Vladimir B, Todorović Marković Biljana M
Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, P.O.B. 522, 11001, Belgrade, Serbia.
Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, P.O.B. 522, 11001, Belgrade, Serbia.
Mater Sci Eng C Mater Biol Appl. 2021 Mar;122:111925. doi: 10.1016/j.msec.2021.111925. Epub 2021 Feb 3.
Bacterial infection and their resistance to known antibiotics delays wound healing. In this study, nanochitosan dots (nChiD) produced by gamma irradiation have been encapsulated in bacterial cellulose (BC) polymer matrix to study the antibacterial potentials of these nanocomposites and their possible usage in wound healing treatment (scratch assay). Detailed analyses show that nChiDs have disc-like shape and average diameter in the range of 40 to 60 nm depending of the applied dose. All nChiDs as well as BC-nChiD nanocomposites emit green photoluminescence independently on the excitation wavelengths. The new designed nanocomposites do not have a cytotoxic effect; antioxidant analysis shows their moderate radical scavenging activity whereas antibacterial properties show significant growth inhibition of strains mostly found in difficult-to-heal wounds. The obtained results confirm that new designed BC-nChiD nanocomposites might be potential agent in wound healing treatment.
细菌感染及其对已知抗生素的耐药性会延迟伤口愈合。在本研究中,通过γ射线辐照制备的纳米壳聚糖点(nChiD)被包裹在细菌纤维素(BC)聚合物基质中,以研究这些纳米复合材料的抗菌潜力及其在伤口愈合治疗(划痕试验)中的可能用途。详细分析表明,nChiD呈盘状,平均直径在40至60纳米范围内,具体取决于所施加的剂量。所有nChiD以及BC-nChiD纳米复合材料均能独立于激发波长发出绿色光致发光。新设计的纳米复合材料没有细胞毒性作用;抗氧化分析表明它们具有适度的自由基清除活性,而抗菌性能则显示出对难愈合伤口中常见菌株的显著生长抑制作用。所得结果证实,新设计的BC-nChiD纳米复合材料可能是伤口愈合治疗中的潜在药物。