Effect of enoxaparin and onion extract on human skin fibroblast cell line – Therapeutic implications for the treatment of keloids

AbstractContext: Keloids and hypertrophic scars are hyperproliferative skin disorders resulting in abnormal wound healing. In the prevention and treatment of keloids and hypertrophic scars, ointments containing heparin and onion extract are very popular. Their therapeutic effects, however, are still controversial and the mechanism of action is not fully understood.Objective: The aim of this study was to assess the effect of enoxaparin and dry onion extract on proliferation, apoptosis and β1 integrin expression in human fibroblasts.Materials and methods: Fibroblast human cell lines (46 BR.1 N) were treated for 48 h with various concentrations of enoxaparin sodium (20, 100, 500 µg/mL) and/or onion [Allium cepa L. (Alliaceae)] extract (50, 250, 1000 µg/mL). The cell proliferation was evaluated by [3H]-thymidine incorporation assay. Furthermore, the expression of β1 integrin and apoptosis was determined by flow cytometry.Results and discussion: The results demonstrate that enoxaparin and onion extract inhibit...