Effect of two different dietary fatty acid profiles and variant rs266729 in ADIPOQ on weight loss and adiponectin concentrations

Abstract

BackgroundThe role of ADIPOQ gene rs266729 variants on weight loss after a dietary intervention are still unclear. ObjectiveTo analyze the effects of the ADIPOQ gene rs266729 variant n weight loss, cardiovascular risk factors, and adiponectin levels after two hypocaloric diets with different dietary fatty profiles. DesignA population of 362 obese patients was enrolled in a randomized clinical trial with two diets (Diet M, monounsaturated fat-enriched diet, and Diet P, polyunsaturated-fat enriched diet). Anthropometric measurements, an assessment of nutritional intake, and biochemical tests were performed at baseline and after 12 weeks. ResultsWeight loss was similar with both diets. After Diet M, only subjects with CC genotype showed significant improvements in total cholesterol (CC vs. CG±GG) (−9.0±1.1mU/L vs. −4.5±2.4mg/dL, p=0.01), LDL cholesterol (−6.0±1.1mg/dL vs. −3.0±0.9mg/dL, p=0.03), glucose (−4.7±1.1mg/dL vs. −0.6±0.5mg/dL, p=0.01), and insulin levels (−2.6±1.0mU/L vs. −0.7±0.3mU/L, p=0.02) and in HOMA-IR (−0.5±0.2 units vs. −0.2±0.4 units, p=0.03). The same improvement was reported after Diet P in all parameters, including total cholesterol (CC vs. CG±GG) (−8.0±1.2mU/L vs. −2.1±1.4mg/dL, p=0.02), LDL cholesterol (−7.3±1.2mg/dL vs. −2.1±0.8mg/dL, p=0.02), glucose (−3.2±0.1mg/dL vs. −0.2±0.5mg/dL, p=0.01), and insulin levels (−2.5±1.0mU/L vs. −1±0.6mU/L, p=0.02) and HOMA-IR (−0.5±0.1 units vs. −0.3±0.4 units, p=0.02). Only subjects with CC genotype showed significant increases in adiponectin levels after both diets: (Diet M: 10.3±2.0ng/dL vs. Diet P: 9.3±2.9ng/dL, p=0.43). ConclusionThe CC genotype of ADIPOQ gene rs266729 variant is associated to increased adiponectin levels and decreases in LDL cholesterol, glucose, insulin, and HOMA-IR levels after weight loss.