Abstract
Pancreatic islets of Langerhans were perifused with Krebs-bicarbonate solution containing glucose (5 and 10 mM). The perifusate was spiked with tetradeuterated hepoxilin A3 and was extracted and analysed by gas chromatography-mass spectrometry using NICI detection. Evidence is presented showing the presence of hepoxilin A3 as the hydrolysis product trioxilin A3. These results demonstrate for the first time that this pathway is active in intact cells; this finding, taken together with our previous evidence that hepoxilins possess insulin secretagogue properties further supports our hypothesis that these products could play a role as endogenous mediators of insulin release.
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