Preparation of hydrogel dressing and its effect on the healing of deep second degree burn wounds in SD Rats / 中国药学杂志

ABSTRACT

OBJECTIVE: To prepare a hydrogel dressing and investigate its effect on the healing of deep second degree burn wounds in SD rats. METHODS: A hydrogel dressing was prepared and its sterilization method was screened. The skin irritation of the hydrogel dressing was investigated in New Zealand rabbits. A deep second degree burn model of SD rats was prepared by hot solid scald method. Tuojia ointment and Intrasite Gel were adopted as positive controls to investigate its effect on the wound healing. RESULTS The prepared hydrogel dressing was clear and transparent, and the viscosity was well consistent with Intrasite Gel. After radiation sterilization, the viscosity of the hydrogel was sharply decreased. However, the viscosity was not significantly changed before and after high pressure steam sterilization. The hydrogel had no significant skin irritation. The healing time of the experimental group was not significantly shorten than that of the positive control, but has significant difference compared with the vehicle control group(P<0.01). CONCLUSION: Hydroxyethyl cellulose can be used as the matrix of hydrogel dressing. The prepared hydrogel dressing has appropriate viscosity, clarification, and no obvious skin irritation. Besides, it has remarkable healing effect on deep second degree burn wounds in SD rats. So it may have broad application prospects.