Abstract

Macrophages isolated from fluids of patients with liver cirrhosis mainly generated the 5-lipoxygenase products leukotriene B 4 and 5-monohydroxyeicosatetraenoic acid. The cyclooxygenase products 6-keto-PGF 1α and thromboxane B 2 were the most important prostaglandin-like substances. Malotilate, an anti-fibrotic substance, selectively inhibited the 5-lipoxygenase, whereas both the 12- and the 15-lipoxygenase pathways were stimulated. The effects of malotilate on eicosanoid production differ from those of known lipoxygenase inhibitors. Such differential effects have not been reported previously.

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