Resumo
This study evaluated the effects of essential oil from Cymbopogon martinii (CMEO) on lipopolysaccharide (LPS)-stimulated human fibroblast cells. Samples of CMEO were collected in Monte Verde, Minas Gerais, Brazil. The fibroblasts were cultured and stimulated by LPS (1 μg/mL), and incubated for 24 h at 37°C. The cytotoxicity of CMEO was evaluated by MTT assay and collagen concentration by Sirius red. Collagenase activity, hyaluronic acid, and the concentrations of IL-1β; IL-6; MCP-1 (CCL2), and MIP-1-α (CCL3) were evaluated by ELISA assay. The effect of CMEO on the expression of mRNA and secretion of MMP-1, MMP-2, and MMP-9 enzymes were evaluated by RT-qPCR and ELISA, respectively. CMEO was cytotoxic against fibroblasts, in which 10 μg/mL inhibited 50% of cell viability. When treated with CMEO, the fibroblasts produced more collagen and hyaluronic acid compared to control cells. When stimulated by LPS, fibroblasts exhibited higher production of IL-6, IL-1β, MCP-1, and MIP-1α compared to control cells. However, the treatment of fibroblasts with CMEO reduces cytokines secretion and enzyme expression. The study showed that CMEO modulates inflammation mediators and reduces metalloproteinase mRNA and secretion levels, making it a promising candidate for anti-aging and wound healing treatments.