Clinical Efficacy of the Novel Biocellulose Wound Dressing Containing Silk Sericin and Polyhexamethylene Biguanide for Split-thickness Skin Graft Donor Sites

The goals of STSG donor site treatment are to accelerate wound healing, prevent infection, reduce pain, and maintain an optimal environment healing promotion. Biocellulose is an ultrafine fiber structure that can hold a large amount of water and has a cooling effect that decreases pain without causing an allergic reaction or irritation.Silk sericin (SS) can activate the growth of fibroblast cells which promote collagen type I production and accelerated wound healing without toxicity . Polyhexamethylene biguanide (PHMB) is a broad spectrum antimicrobial agent with high efficacy and low toxicity. Therefore, the combination of silk sericin and PHMB in biocellulose dressings would benefit STSG donor site wound treatment. The purpose of this study is to investigate the clinical efficacy of this dressing for STSG donor site wound treatment compared with Bactigras® (chlorhexidine acetate 0.5% in white soft paraffin), which is the standard dressing for this type of wound at King Chulalongkorn Memorial Hospital, by monitoring the time required for complete re-epithelization, wound quality, the rate of infection, pain, and the adverse events from December 2015 to November 2016. Thirty two subjects (more than 18 years) with STSG donor site at thigh will be recruited in this study. Block randomization will be used for separation half of eligible wound to cover with novel biocellulose wound dressing containing silk sericin and PHMB or Bactigras®. Wound healing time is the day that the dressing detaches by itself with no exudate and air contacted pain. Wound quality at 1,3,and 6 months will be measured in terms of erythema level, melanin level, transepidermal water loss by using Cutometer® and scar quality (vancouver scar scale). Sign of infection, pain (VAS score), hepatic and renal function will also be collected.