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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

12(R)-hydroxy-5,8,10,14-eicosatetraenoic acid is a chemoattractant for human polymorphonuclear leucocytes in vitro.

Increased amounts of 12-hydroxy-5,8,10,14-eicosatetraenoic acid (12-HETE) are found in the lesional skin of patients with the skin disease psoriasis when compared to clinically normal skin. Stereochemical analysis has recently shown that the 12-HETE present in lesional psoriatic scale is the (R), and not the (S) hydroxyl enantiomer, produced by platelets. Since the chemoattractant activity of 12(R)-HETE has not previously been described, the (R) and (S) hydroxyl enantiomers of 12-HETE have now been synthesised and their chemokinetic activity compared in vitro. 12(R)-HETE, was more potent than 12(S)-HETE as a chemokinetic agent for human polymorphonuclear leucocytes but 2000 times less potent than leukotriene B4. In contrast to results obtained with the 12-HETE enantiomers, the chemoattractant compound 5(S)-HETE was found to be more potent than the 5(R) hydroxyl enantiomer. Thus, the configuration of the hydroxyl group appears to be of importance to the chemokinetic activity of the HETEs, and the increased potency of the 12(R) enantiomer may enhance its significance as a mediator of inflammation in psoriasis.[1]


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