Background: The purpose of this review is to systematically explore the mechanisms behind Platelet-Rich Plasma (PRP) therapy and its therapeutic potential in promoting wound healing in Diabetic Foot Ulcers (DFU). This review aims to comprehensively evaluate the roles of PRP in addressing the challenges associated with DFU healing, such as prolonged inflammation, poor blood flow and impaired immunity. Ultimately, the goal is to provide a deeper understanding of PRP's clinical applications and its potential to improve the treatment outcomes for DFU, thereby encouraging further research and clinical advancements in this field. Methods: Eligible studies included cohort studies, RCTs, observational studies, and case-control studies published in English, focusing on diabetic ulcers and PRP therapy. A narrative synthesis was performed, with no meta-analysis due to study heterogeneity. Discussion: PRP promotes wound healing in diabetic ulcer (DU) through key mechanisms, including growth factor-driven angiogenesis, inflammation modulation, cellular differentiation and antibacterial properties. Growth factors like PDGF, VEGF and TGF-β enhance blood flow, tissue regeneration and collagen synthesis, while PRP activates endothelial cells for neovascularization. It also balances pro- and anti-inflammatory cytokines, supporting tissue repair. PRP’s cellular components, including leukocytes, aid in debris clearance and tissue regeneration. Additionally, PRP's antibacterial effects help prevent infections, making it a promising treatment for DU. Compared to other therapies, PRP offers significant improvements in wound healing, reduces amputation risks and is more cost-effective with fewer side effects. Conclusion: PRP therapy offers a promising treatment for DU by promoting wound healing through angiogenesis, tissue regeneration, inflammation modulation and antibacterial effects. PRP shows significant promise for chronic, non-healing diabetic ulcers but requires further optimization for broader clinical application.
Dharani et al. (Thu,) studied this question.