Abstract
Oleoylethanolamide (OEA) is a safe bioactive lipid that demonstrated strong anorexigenic properties in preclinical and clinical models. In order to evaluate the importance of OEA delivery kinetic on its anorectic properties, we developed OEA-containing dairy snacks with either a liquid or a semi-solid form. The OEA+ liquid snack, but not the semi-solid one, reduced by 14 and 18 % the amount of feed eaten by normal-weight and obese minipigs, respectively, in an eating behavior test performed 4 h after snack ingestion. In vitro digestion experiments revealed that OEA release in intestinal digesta was greatly enhanced when the snack was liquid compared to the semi-solid structure. Kinetic investigations of several plasma parameters after liquid snack ingestion points towards different potential mechanism depending upon the minipig weight status, with an effect of the OEA+ liquid snack likely on endocannabinoid and other related N-acylethanolamine metabolism in normal-weight minipigs and on ketogenesis in obese ones.
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