Fatty acids modulate the expression levels of key proteins for cholesterol absorption in Caco-2 monolayer

Table 1 Structure of six fatty acids with a methyl end and a carboxyl end^a

^a Palmitic acid is a trivial name for a saturated fatty acid with 16 carbon atoms and no double bonds (C16:0). Oleic acid has 18 carbon atoms and one double bond in the ω-9 position (C18:1 ω-9), whereas Linoleic acid has 18 carbon atoms and two double bonds in the ω-6 position (C18:2 ω-6), ARA Arachidonic acid, EPA eicosapentaenoic acid, DHA docosahexaenoic acid, with multiple double bonds, are represented as C20:4 ω-6, C20:5 ω-3 and C22:6 ω-3. This numerical scheme is the systematic nomenclature most commonly used. It is also possible to describe fatty acids systematically in relation to the acidic end of the fatty acids; symbolized Δ (Greek delta) and numbered 1. All unsaturated fatty acids are shown with cis configuration of the double bonds

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