Oxygen generating
biomaterials represent a new trend in regenerative medicine that aims to generate and supply
oxygen at the site of requirement, to support tissue healing and regeneration. To enhance the healing of dermal
wounds, we have developed a highly portable, in situ
oxygen generating
wound dressings that uses
sodium percarbonate (SPO) and
calcium peroxide (CPO) as chemical
oxygen sources. The dressing continuously generated
oxygen for more than 3 days, after which it was replaced. In the in vivo testing on porcine full-thickness porcine
wound model, the SPO/CPO dressing showed enhanced wound healing during the 8 week study period. Quantitative measurements of wound healing related parameters, such as
wound closure, reepithelialization, epidermal thickness and
collagen content of dermis showed that supplying
oxygen topically using the SPO/CPO dressing significantly accelerated the wound healing. An increase in neovascularization, as determined using
Von Willebrand factor (vWF) and CD31 staining, was also observed in the presence of SPO/CPO dressing. This novel design for a
wound dressing that contains
oxygen generating
biomaterials (SPO/CPO) for supplying topical
oxygen, may find utility in treating various types of acute to chronic
wounds.