The Evaluation of the Role of Beta-Hydroxy Fatty Acids on Chronic Inflammation and Insulin Resistance

Abstract

β-hydroxy fatty acids are a major component of lipid A moiety of lipopolysaccaride. We aimed to investigate the role of freeβ-hydroxy fatty acids on inflammation, as well as to evaluate their effects on cytokine release from human blood cells, and whether they exist in plasma of patients with chronic inflammatory diseases with/without insulin resistance. Peripheral venous blood was incubated withβ-hydroxy lauric andβ-hydroxy myristic acids (each 100 ng, 1μg, 10μg/mL) up to 24 hours. Cytokines were measured from culture media and plasma. Free fatty acids and biochemical parameters were also measured from patients' plasma. Onlyβ-hydroxy lauric acid significantly stimulated interleukin-6 production at 10μg/mL compared to control (533.9±218.1versus438.3±219.6pg/mL,P<.05). However, freeβ-hydroxy lauric and myristic acids were not found in patients' plasma. Therefore, freeβ-hydroxy lauric and myristic acids do not seem to have a role on sterile inflammation in chronic inflammatory diseases associated with insulin resistance.