| In order to evaluate the healing effect of eugenol and other nanofibers, 100 male Wistar rats (200±10 g) were
used with 14-15 weeks of age in this study. All of the male rats were transferred in the standard cages under
controlled exposure conditions in a 12:12 h light/dark cycle with a constant temperature about 22±2 oC. In
addition, the male rats were fed with pellets. Firstly, anesthesia process was performed by 2% xylazine
hydrochloride (10mg/Kg/IP) and 10% ketamine hydrochloride (100mg/Kg/IP), and then the rats were placed on
the operating table. Then the dorsal surfaces of the rats’ skin to ileum were scrubbed and prepared as the next
step. A circular wound (with a 7 mm diameter) was created by a 7 mm sterile biopsy punch. All 100 rats were
divided into four groups (n=25) randomly named as control, nano zinc oxide (ZnO), eugenol nanofibers, and
polycaprolactone groups. After that, they were divided into five groups regarding the wound closure rate in days
3, 5, 7, 14, and 21. Then, the wound dressings were placed on the wounds and renewed every 24 h. At the end
of days 3, 5, 7, 14, and 21, the relevant tests, such as histopathology, were conducted by removing the tissue
volume using a biopsy punch, and then decapitation process was performed on the rats. It was obvious that
eugenol nanofiber showed the best granulation tissue by the production of collagen. Further studies are being
performed on wound healing by eugenol nanofiber. |