Abstract
Diabetes mellitus remains a global challenge to public health as it results in non-healing chronic ulcers of the lower limb. These wounds are challenging to heal, and despite the different treatments available to improve healing, there is still a high rate of failure and relapse, often necessitating amputation. Chronic diabetic ulcers do not follow an orderly progression through the wound healing process and are associated with a persistent inflammatory state characterised by the accumulation of pro-inflammatory macrophages, cytokines and proteases. Photobiomodulation has been successfully utilised in diabetic wound healing and involves illuminating wounds at specific wavelengths using predominantly light-emitting diodes or lasers. Photobiomodulation induces wound healing through diminishing inflammation and oxidative stress, among others. Research into the application of photobiomodulation for wound healing is current and ongoing and has drawn the attention of many researchers in the healthcare sector. This review focuses on the inflammatory pathway in diabetic wound healing and the influence photobiomodulation has on this pathway using different wavelengths.
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