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• W657707600 abstract "Plukenetia volubilis L. (Euphorbiaceae) is a domesticated vine distributed from the high-altitude Andean rain forest to the lowlands of the Peruvian Amazon. Oil from the cold-pressed seeds, sold under the commercial name of Sacha Inchi Oil (SIO) is actually much in favour because it contains a high percentage of omega 3 and omega 6, and is hence used as a dietary supplement. SIO is also used traditionally for skin care, in order to maintain skin softness, and for the treatment of wounds, insect bites and skin infections, in a tropical context where the skin is frequently damaged.This study was designed in order to verify whether the traditional use of SIO for skin care would have any impact on Staphylococcus aureus growth and skin adherence, as S. aureus is involved in many skin pathologies (impetigo, folliculitis, furuncles and subcutaneous abscesses) being one if the main pathogens that can be found on the skin. Therefore, our objective was to assess SIO bactericidal activity and interference with adherence to human skin explants and the keratinocyte cell line. Cytotoxicity on that cells was also determined. The activity of SIO was compared to coconut oil (CocO), which is widely used for skin care but has different unsaturated fatty acids contents.Laboratory testing with certified oil, determined antibacterial activity against radio labelled S. aureus. Cytotoxic effects were measured with XTT on keratinocyte cells and with neutral red on human skin explants; phenol was used as cytotoxic control. Adherence assays were carried out by mixing H3-labelled S. aureus bacteria with keratinocyte cells and human skin explants, incubated with oils 2h before (to determine the inhibition of adherence, assimilated to a preventive effect) or 2h after the contact of the biological material with S. aureus (to assess the detachment of the bacteria, assimilated to a curative effect). Residual radioactivity measured after washings made it possible to determine the adherence intensity. Bactericidal effect was determined by colony counting on trypticase soy agar.Laboratory assays showed that SIO and CocO, tested undiluted, were not cytotoxic on keratinocytes nor human explants and were not bactericidal neither. SIO was more active as antiadherent (preventive) than CocO on keratinocytes. There was no significant difference between detachment effects (curative) of both oils on keratinocytes but SIO was almost 5 times more active on the detachment of S. aureus from human skin explants.From that study it can be concluded that the use of SIO on dermal cells is safe and efficient in the inhibition of S. aureus adherence. Our results tend to support the traditional use of undiluted SIO in skin care." @default.
• W657707600 created "2016-06-24" @default.
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• W657707600 date "2015-08-01" @default.
• W657707600 modified "2023-10-18" @default.
• W657707600 title "Sacha Inchi Oil (Plukenetia volubilis L.), effect on adherence of Staphylococus aureus to human skin explant and keratinocytes in vitro" @default.
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• W657707600 doi "https://doi.org/10.1016/j.jep.2015.06.009" @default.
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