3-Hydroxyoctanoic acid

3-Hydroxyoctanoic acid is a hydroxylated fatty acid that has been found in the LPS of Pseudomonas aeruginosa and in methyl-branched poly(3-hydroxyalkanoate) (PHA) polymers produced by Pseudomonas oleophores. It is an agonist of the orphan receptor GPR109B, increasing intracellular calcium in human neutrophils endogenously expressing GPR109B. 3-Hydroxycaprylic acid prevents lipolysis in human adipocytes and is upregulated in human plasma in response to a ketogenic diet. Plasma levels of 3-hydroxyoctanoic acid were also increased 3.41-fold in human male runners exhausted on a treadmill and in a mouse model of autism spectrum disorder (ASD) fed a high-glycemic diet.