Abstract
Purpose: Obesity as a serious public health problem worldwide, results in the incidence of many chronic diseases. Obesity has been recognized as a chronic low-grade inflammation disorder. Altered endocannabinoid system tone is also involved in the pathogenesis of obesity. The present study aimed to investigate the effects of oleoylethanolamide supplementation on inflammatory biomarkers and oxidative stress in obese people.Methods: This randomized, double-blind, placebo-controlled clinical trial was carried out on 60 healthy obese people in 2016 in Tabriz, Iran. Eligible subjects were randomly divided into intervention (received daily, two 125 mg OEA capsules) and control groups (the same amounts of starch) and treated for 8 weeks. Blood samples (5 ml) were taken in fasting state at the baseline and at the end of the study. The concentrations of MDA and TAS were measured using a spectrophotometer. A high sensitive-C reactive protein level was measured by Immunoturbidimetry assay using the commercial kit. IL-6 and TNF-α levels were assayed by the ELISA method. The differences between groups were assessed by ANCOVA and statistical significance was determined at p<0.05.Results: Analysis was done on 56 participants who continued intervention until the end of the study. A significant decrease in the IL-6 and TNF-α serum concentrations was observed in the intervention group (p<0.001). Changes in other variables were undetectable (p>0.05).Conclusion: The use of OEA as a complementary pharmacotherapy agent could be effective in improving inflammation and oxidative stress in obese people. Future studies are needed to confirm the obtained results.
Highlights
Obesity as a serious public health problem, results from an imbalance between energy intake and energy expenditure.[1]
The present study aimed to investigate the effects of oleoylethanolamide supplementation on inflammatory biomarkers and oxidative stress in obese people
According to the analysis of covariance (ANCOVA) test, there was a significant difference between groups regarding the IL-6 variable, after adjusting for baseline value and demographic characteristics (p
Summary
Obesity as a serious public health problem, results from an imbalance between energy intake and energy expenditure.[1]. An altered endocannabinoid system tone is involved in the pathogenesis of obesity.[12] Endocannabinoids exert their physiological functions in the body mainly via two receptors: cannabinoid receptors 1 and 2 (CB1 amd CB2).[13] Some endocannabinoids-like compounds including oleoylethanolamide (OEA) are structurally similar to endocannabinoids but are incapable of binding to cannabinoid receptors.[14] Oleoylethanolamide as an endogenous ethanolamide fatty acid is synthesized in the small intestine cells and adipose tissues,[15,16] neurons[17] and astrocytes[18] and exerts its biological functions through other pathways instead of cannabinoid receptors.[19] Oatmeal, nuts, and cocoa powder are the major foods sources of OEA in meals. The amount of OEA found in these foods is low (fewer than 2 μg/g).[20,21] In addition to the protective effects of OEA in the many metabolic diseases including neurodegenerative disorders, anti-atherosclerosis effects,
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