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N-Acylphosphatidylethanolamine (NAPE)-hydrolyzing phospholipase D (NAPE-PLD) is a membrane-bound enzyme which releases the endocannabinoid anandamide and other bioactive N-acylethanolamines from their corresponding NAPEs in animal tissues. NAPE-PLD has been shown to be expressed by specific populations of neurons in the brain and targeted to axonal processes. Recent studies have suggested that NAEs generated by NAPE-PLD in axons may act as anterograde synaptic signaling molecules that regulate the activity of postsynaptic neurons. NAPE-PLD has also been shown to catalyze the hydrolysis of NAPE to generate OEA (oleoylethanolamide), a natural lipid amide that inhibits food intake in free-feeding rodents by prolonging latency to feed and postmeal interval.