Development of ZnO/selenium nanoparticles embedded chitosan‐based anti‐bacterial wound dressing for potential healing ability and nursing care after paediatric fracture surgery

The current study was aimed at the assessment of the effect of chitosan‐ZnO/Selenium nanoparticles scaffold on infected wound healing and care of paediatric surgery treatment. The nanoparticle scaffolds were developed from sources such as chitosan (CS), different concentrations of zinc oxide (ZnO), and Selenium (SeNPs) nanoparticles by freeze‐drying method. The structural and chemical properties of nanoparticles were investigated by UV–Vis, fourier transform infrared spectroscopy (FTIR), and phase identification by x‐ray diffraction analysis. The surface morphology of CS, chitosan‐ZnO (CS‐ZnO) and chitosan‐ZnO/SeNPs was analysed using a scanning electron microscope. The incorporation of ZnO and SeNPs along with CS polymer induces antioxidant and antimicrobial functions. The bacterial susceptibility to nanoparticle scaffolds against Escherichia coli and Staphylococcus aureus showed the excellent antibacterial effects of ZnO and SeNPs. In‐vitro studies of fibroblast of NIH 3 T3 and HaCaT cell lines revealed the biocompatibility, cell adhesion, cell viability, and proliferation of scaffold in the wound site. Also, results of in‐vivo studies strongly enhanced collagen synthesis, re‐epithelialization, and rapid wound closure. Thus, the synthesised chitosan‐ZnO/SeNPs nanoparticle scaffold resulted in significant improvement in histopathological indices in the full thickness of wound healing after nursing care of paediatric fracture surgery.