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Accelerating effect of Cucurbita pepo L. fruit extract on excisional wound healing.



PMID: 

Nutrients. 2022 Aug 15 ;14(16). Epub 2022 Aug 15. PMID: 36014842

Abstract Title: 

Accelerating Effect ofL. Fruit Extract on Excisional Wound Healing in Depressed Rats Is Mediated through Its Anti-Inflammatory and Antioxidant Effects.

Abstract: 

BACKGROUND: Chronic stress can hinder wound healing as it suppresses both the cellular and innate immune responses.OBJECTIVES: The study aims to assess the effectiveness of the administration of topical and oralL. (CP) ethanolic extract in prompting excisional wound healing in rats exposed to chronic stress, and to explain how it works.MATERIALS AND METHODS: Fifty albino rats assigned to five groups (= 10) were utilized in this study. The chronic unpredictable mild stress (CUMS) model was used for 4 weeks to induce depressive-like behavior in rats, and a forced swim test and corticosterone were assessed to confirm its occurrence. During the experiment, an excisional wound was induced in the rats and followed. Oxidant/antioxidants status and pro-inflammatory cytokines levels were measured in the serum and wound area. Gene expression of pro-inflammatory cytokines was also assessed using RT-PCR. Wound closure histopathological changes and immunohistochemical expression of CD68, CD3, and CD4 at the wound area was assessed.RESULTS: The administration of CP, both orally and topically, significantly reduced (< 0.001) the depressive-like behavior and corticosterone and pro-inflammatory cytokines levels, while it significantly up-regulated the antioxidant activity compared to the untreated and topically CP-treated groups. Both topically CP-treated and combined CP-treated groups showed complete re-epithelialization, reduced inflammatory cells infiltration, collagen fibers deposition, and significantly increased CD3, CD4 positive T cells count, with a superior effect in the combined CP-treated groups.CONCLUSION: L., administrated both topically and orally, can enhance the wound healing process in rats with depressive-like behavior mostly through the antioxidant, anti-inflammatory, and antidepressant activities observed in this study.

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