Innovative Phytochemical-Based Approaches for the Treatment of Diabetic Foot Ulcers.

Abstract

Diabetic foot ulcers are severe complications of diabetes mellitus; they are characterized by chronic inflammation, poor wound healing, and high risks of infection leading to extended hospitalizations and amputation. Although progress has been made in the conventional care of wounds, current therapies still fall short in yielding optimal healing outcomes. In recent years, bioactive natural products and phytochemicals have emerged as promising therapeutic agents due to their diverse pharmacological properties, including anti-inflammatory, antioxidant, antimicrobial, and pro-angiogenic effects. Key active phytochemicals such as curcumin, quercetin, resveratrol, and berberine have been investigated for their potential to enhance wound closure, modulate immune function, and promote tissue regeneration. A literature review was conducted through a systematic search of electronic databases, including PubMed/MEDLINE, Scopus, Web of Science, ScienceDirect, and Google Scholar, using keywords such as "diabetic foot ulcers," "phytochemicals," "natural products," "wound healing," and "drug delivery systems." Many phytochemicals have been reported for their efficacy in DFU models, modulating oxidative stress, stimulating fibroblast proliferation, enhancing collagen synthesis, and inhibiting the growth of microbial biofilms. Advanced drug delivery platforms have been developed to improve the solubility, stability, and targeted delivery of these compounds to the site of injury, utilizing hydrogels, nanoparticles, and polymer-based scaffolds. Preclinical and some clinical studies support the therapeutic potential of these agents; however, translational challenges persist due to issues with formulation, standardization, and the need for large-scale clinical validation. Phytochemical-based interventions are, therefore, a promising complementary approach for treating DFUs. The integration of these natural agents into conventional wound care regimens can improve healing outcomes and reduce complications. Future studies should focus on well-designed clinical trials, detailed mechanistic studies, and standardized and scalable delivery systems to support the clinical translation of phytochemical therapies in DFU management.