SC-41930 inhibits neutrophil infiltration of the cavine dermis induced by 12(R)-hydroxyeicosatetraenoic acid

Add time:07/11/2019    Source:sciencedirect.com

Psoriasis is a disease state characterized by epidermal proliferation, neutrophil infiltration, along with release of the proinflammatory mediators leukotriene-B4 (LTB4) and 12(R)-hydroxyeicosatetraenoic acid [12(R)-HETE]. LTB4 and 12(R)-HETE are chemoattractant to the neutrophil, the latter approximately 1000X less potent. LTB4 and 12(R)-HETE are present in psoriatic scale, the latter in quantities so much greater than LTB4 that it is proposed as a primary mediator of neutrophil infiltration in psoriasis. 12(R)-HETE, synthesized in optically pure form by a new, shorter route, was injected into the cavine dermis. At a dose of 25 μgm per intradermal site, 12(R)-HETE was a significant chemoattractant to the neutrophil (as assessed by dermal myeloperoxidase levels). SC-41930, 7-[3-(4-acetyl-3-methoxy-2-propylphenoxy)-propoxy]-3,4-dihydro-8-propyl-2H-1-benzopyran-2-carboxylic acid, given intragastrically inhibited 12(R)-HETE-induced neutrophil infiltration of the cavine dermis with an ED50 value of 13.5 mg/kg. Compounds such as SC-41930 may well have utility for treating human psoriasis.

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