Functional lipidomics in patients on home parenteral nutrition: Effect of lipid emulsions

Figure 5 Enzyme activity estimate. The activity of delta-9-desaturase was estimated using the precursor/product ratio: the lower the value of ratio, the higher the enzyme activity. The delta-6-desaturase + Elongase activity was estimated using the precursor/product ratio: the lower the value of ratio, the higher the enzyme activity. The estimated activity of delta-5- desaturase was calculated as the product/precursor ratio due to the higher relative percentage of ARA: the lower the value of the ratio, the lower the enzyme activity. The amount of each fatty acid was calculated as a percentage of the total fatty acid content (relative%). Data are expressed as medians (ranges). IVLE: Intravenous lipid emulsion; OO-IVLE group: Patients receiving a PN admixture containing Clinoleic 20% ; SMOF-IVLE group: Patients receiving a PN admixture containing SMOF lipid ^®20% ; No-IVLE group: Of patients receiving PN without IVLE ; HC group: Healthy controls; ARA: Arachidonic acid; SFAs: Saturated fatty acids; MUFAs: Monounsaturated fatty acids.