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

6-trans-leukotriene B4 is a neutrophil chemotaxin in the guinea pig dermis.

The products of the 5- and 12-lipoxygenase (5-LO, 12-LO) pathways of arachidonic acid metabolism are implicated as proinflammatory mediators in a number of disease states. 12(R)-hydroxyeicosatetraenoic acid [12(R)-HETE] is present in large quantities in human psoriatic lesional skin and can be further metabolized by 5-LO to 5(S), 12(R)-dihydroxy-(6E,8Z,10E,14Z)-eicosatetraenoic acid (6-trans-LTB4). Furthermore, leukotriene B4 (LTB4) and the sulfidopeptide leukotrienes (LTC4, LTD4) can be transformed to 6-trans-LTB4. When injected into the guinea pig dermis, 6-trans-LTB4 (1.0, 10.0, 20.0 micrograms/intradermal site) caused a significant (P less than 0.02) infiltration of polymorphonuclear leukocytes (PMN) at 4 hr as assessed by histology and the levels of the PMN marker enzyme myeloperoxidase. 6-trans-LTB4 is a more potent PMN chemoattractant than 12(R)-HETE in the guinea pig dermis but is far less potent than LTB4. Pharmacological interdiction of leukotriene production or receptor binding should take into account the proinflammatory activity of 6-trans-LTB4.[1]


  1. 6-trans-leukotriene B4 is a neutrophil chemotaxin in the guinea pig dermis. Fretland, D.J., Widomski, D.L., Anglin, C.P., Walsh, R.E., Levin, S., Gaginella, T.S. J. Leukoc. Biol. (1991) [Pubmed]
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