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Oleoylethanolamide

Names
Preferred IUPAC name (9Z)-N-(2-Hydroxyethyl)octadec-9-enamide
Identifiers
CAS Number	111-58-0
3D model (JSmol)	Interactive image
ChEBI	CHEBI:77362
ChemSpider	4446574
ECHA InfoCard	100.003.532
IUPHAR/BPS	2661
PubChem CID	5283454
UNII	1HI5J9N8E6
CompTox Dashboard (EPA)	DTXSID1044516
InChI InChI=1S/C20H39NO2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-20(23)21-18-19-22/h9-10,22H,2-8,11-19H2,1H3,(H,21,23)/b10-9-Key: BOWVQLFMWHZBEF-KTKRTIGZSA-N InChI=1/C20H39NO2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-20(23)21-18-19-22/h9-10,22H,2-8,11-19H2,1H3,(H,21,23)/b10-9-Key: BOWVQLFMWHZBEF-KTKRTIGZBW
SMILES CCCCCCCC\C=C/CCCCCCCC(=O)NCCO
Properties
Chemical formula	C20H39NO2
Molar mass	325.537 g·mol
Appearance	White solid
Melting point	59–60 °C (138–140 °F; 332–333 K)
Solubility in ethanol and DMSO	Soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). N verify (what is  ?) Infobox references

Oleoylethanolamide (OEA) is an endogenous peroxisome proliferator-activated receptor alpha (PPAR-α) agonist. It is a naturally occurring ethanolamide lipid that regulates feeding and body weight in vertebrates ranging from mice to pythons.

OEA is a shorter, monounsaturated analogue of the endocannabinoid anandamide, but unlike anandamide it acts independently of the cannabinoid pathway, regulating PPAR-α activity to stimulate lipolysis.

OEA is produced by the small intestine following feeding in two steps. First an N-acyl transferase (NAT) activity joins the free amino terminus of phosphatidylethanolamine (PE) to the oleoyl group (one variety of acyl group) derived from sn-1-oleoyl-phosphatidylcholine, which contains the fatty acid oleic acid at the sn-1 position. This produces an N-acylphosphatidylethanolamine, which is then split (hydrolyzed) by N-acyl phosphatidylethanolamine-specific phospholipase D (NAPE-PLD) into phosphatidic acid and OEA. The biosynthesis of OEA and other bioactive lipid amides is modulated by bile acids.

OEA has been demonstrated to bind to the novel cannabinoid receptor GPR119. OEA has been suggested to be the receptor's endogenous ligand.

OEA has been hypothesized to play a key role in the inhibition of food seeking behavior and in the lipolysis of brown bears "ursus arctos" during the hibernation season together with the alteration of the endocannabinoid system required for the metabolic changes for hibernation.

OEA has been reported to lengthen the life span of the roundworm Caenorhabditis elegans through interactions with lysomal molecules.

OEA is mainly known by its anorexigenic effects. However, it has also neuroprotective properties. In this sense, recent research has demonstrated that OEA reduces neuronal death in a murine model of aggressive neurodegeneration. Such neuroprotective effect is triggered by a stabilization of microtubule dynamics and by the modulation of neuroinflammation

References

1. Gaetani S, Oveisi F, Piomelli D (2003). "Modulation of meal pattern in the rat by the anorexic lipid mediator oleoylethanolamine". Neuropsychopharmacology. 28 (7): 1311–6. doi:10.1038/sj.npp.1300166. PMID 12700681.
2. Lo Verme J, Gaetani S, Fu J, Oveisi F, Burton K, Piomelli D (2005). "Regulation of food intake by oleoylethanolamine". Cell. Mol. Life Sci. 62 (6): 708–16. doi:10.1007/s00018-004-4494-0. PMID 15770421. S2CID 26838764.
3. Giuseppe Astarita; Bryan C. Rourke; Johnnie B. Andersen; Jin Fu; Janet H. Kim; Albert F. Bennett; James W. Hicks & Daniele Piomelli (2005-12-22). "Postprandial increase of oleoylethanolamine mobilization in small intestine of the Burmese python (Python molurus)". Am J Physiol Regul Integr Comp Physiol. 290 (5): R1407–R1412. doi:10.1152/ajpregu.00664.2005. PMID 16373434. S2CID 11852711.
4. Gaetani S, Kaye WH, Cuomo V, Piomelli D (September 2008). "Role of endocannabinoids and their analogues in obesity and eating disorders". Eat Weight Disord. 13 (3): e42–8. PMID 19011363.
5. illustration
6. Magotti P, Bauer I, Igarashi M, Babagoli M, Marotta R, Piomelli D, Garau G (Dec 2014). "Structure of Human N-Acylphosphatidylethanolamine-Hydrolyzing Phospholipase D: Regulation of Fatty Acid Ethanolamide Biosynthesis by Bile Acids". Structure. 23 (3): 598–604. doi:10.1016/j.str.2014.12.018. PMC 4351732. PMID 25684574.
7. Overton HA, Babbs AJ, Doel SM, Fyfe MC, Gardner LS, Griffin G, Jackson HC, Procter MJ, Rasamison CM, Tang-Christensen M, Widdowson PS, Williams GM, Reynet C (2006). "Deorphanization of a G protein-coupled receptor for oleoylethanolamide and its use in the discovery of small-molecule hypophagic agents". Cell Metab. 3 (3): 167–175. doi:10.1016/j.cmet.2006.02.004. PMID 16517404.
8. Brown AJ. (2007). "Novel cannabinoid receptors". Br J Pharmacol. 152 (5): 567–575. doi:10.1038/sj.bjp.0707481. PMC 2190013. PMID 17906678.
9. Boyer C, Cussonneau L, Brun C, Deval C, Pais de Barros JP, Chanon S, Bernoud-Hubac N, Daira P, Evans AL, Arnemo JM, Swenson JE, Gauquelin-Koch G, Simon C, Blanc S, Combaret L, Bertile F, Lefai E (2020). "Specific shifts in the endocannabinoid system in hibernating brown bears". Frontiers in Zoology. 17 (1): 35. doi:10.1186/s12983-020-00380-y. PMC 7681968. PMID 33292302.
10. Folick A, Oakley HD, Yu Y, Armstrong EH, Kumari M, Sanor L, Moore DD, Ortlund EA, Zechner R, Wang MC (2015). "Aging. Lysosomal signaling molecules regulate longevity in Caenorhabditis elegans". Science. 347 (6217): 83–6. doi:10.1126/science.1258857. PMC 4425353. PMID 25554789.
11. Pérez-Martín, Ester; Muñoz-Castañeda, Rodrigo; Moutin, Marie-Jo; Ávila-Zarza, Carmelo A.; Muñoz-Castañeda, José M.; Del Pilar, Carlos; Alonso, José R.; Andrieux, Annie; Díaz, David; Weruaga, Eduardo (July 2021). "Oleoylethanolamide Delays the Dysfunction and Death of Purkinje Cells and Ameliorates Behavioral Defects in a Mouse Model of Cerebellar Neurodegeneration". Neurotherapeutics. 18 (3): 1748–1767. doi:10.1007/s13311-021-01044-3. PMC 8609004. PMID 33829414.
12. Pérez-Martín, Ester; Pérez-Revuelta, Laura; Barahona-López, Cristina; Pérez-Boyero, David; Alonso, José R.; Díaz, David; Weruaga, Eduardo (January 2023). "Oleoylethanolamide Treatment Modulates Both Neuroinflammation and Microgliosis, and Prevents Massive Leukocyte Infiltration to the Cerebellum in a Mouse Model of Neuronal Degeneration". International Journal of Molecular Sciences. 24 (11): 9691. doi:10.3390/ijms24119691. ISSN 1422-0067. PMC 10253688. PMID 37298639.

External links

• Science Magazine
• BBC: Fatty foods 'offer memory boost'

• Neurotransmitters
• Fatty acid amides
• Endocannabinoids