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  • Title: The benefits of ω-3 supplementation depend on adiponectin basal level and adiponectin increase after the supplementation: A randomized clinical trial.
    Author: Barbosa MM, Melo AL, Damasceno NR.
    Journal: Nutrition; 2017 Feb; 34():7-13. PubMed ID: 28063515.
    Abstract:
    OBJECTIVE: The aim of this study was to analyze whether ω-3 supplementation improves cardiometabolic profile in individuals with cardiovascular risk factors and to determine the effect of adiponectin levels on these changes. METHODS: In this double-blind, placebo-controlled, 2-mo clinical trial, we randomized 80 individuals of both sexes (mean age 52 y) with at least one cardiovascular risk factor (excess weight, hypertension, dyslipidemia, diabetes, or smoking) into two groups: ω-3 (supplemented with 3 g/d of fish oil containing 37% eicosapentaenoic acid and 23% docosahexaenoic acid) and placebo (3 g/d of sunflower oil containing 65% linoleic acid). At baseline and after the intervention, we evaluated serum adiponectin, leptin, lipid profile, apolipoproteins (apo), electronegative low-density lipoprotein (LDL[-]), and glucose metabolism (glucose and insulin). RESULTS: After supplementation, the ω-3 group showed an increase in serum adiponectin. After stratifying the ω-3 group by adiponectin concentration at baseline, participants with lower adiponectin concentration showed a higher reduction of total cholesterol, LDL, LDL/high-density lipoprotein ratio, LDL/apo B, and LDL(-). Individuals with a higher variation of adiponectin concentration after ω-3 supplementation presented with reduced blood glucose. The variation of serum adiponectin induced by ω-3 supplementation was negatively correlated with the Framingham and Adult Treatment Panel IV scores (r = -0.4 and P < 0.05 for both). CONCLUSIONS: Adiponectin is shown as one of the mechanisms by which ω-3 improves cardiometabolic profile in persons with cardiovascular risk. Moreover, the benefit varies according to the adiponectin basal level and adiponectin variation after supplementation.
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