The wound healing potential of Hedychium spicatum Sm. and Zinnia peruviana (L.) ethanolic extracts against excision wound model in rats.

Medicinal plants used for wound healing, are key to unlock the doors for combating the resistance of pathogens by provision of new source of compounds. This study is aimed to evaluate and compare the wound healing properties of ethanolic extract of Hedychium spicatum Sm. rhizome and of Zinnia peruviana's leaves and roots. Albino rats were divided into 10 groups (n = 6), control, positive control, negative control, untreated, Hedychium spicatum Sm. (125 mg/kg), Hedychium spicatum Sm (250 mg/kg), Zinnia peruviana (L.)(Leaves) (125 mg/kg), Zinnia peruviana (L.) (Leaves) (250 mg/kg), Zinnia peruviana (L.)(Roots) (125 mg/kg), Zinnia peruviana (L.)(Roots) (250 mg/kg) respectively. Excision wound of 1.5 cm wound was inflicted on the dorsal side of each rat except control group. 5% CMC gel, fusidic acid and extract gels were applied topically once daily on the wound area which was measured at intervals of 3 days until epithelization and complete wound closure. Different biochemical markers were analyzed in both blood and skin to validate the wound healing potential of these plants. Topical application of an ethanolic extract of Hedychium spicatum Sm. (250 mg/kg) had significant (p ˂ 0.001) rate of wound healing and reduced epithelization period. Marked amelioration of hydroxyproline content, remarkable results on histopathological changes, reduction in oxidative stress was observed with Hedychium spicatum Sm. ethanolic extract at dose level of 250 mg/kg in comparison with untreated group. This study concluded that the Hedychium spicatum Sm. rhizome ethanolic extract gel is effective in wound repair and may possess potential for the development of dermatologic preparation for topical diseases.

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Declaration of competing interest All authors declared no conflict of interest.