Production of leukotrienes and prostaglandins by human ascites cells

Abstract. Ascites was collected from six patients with liver cirrhosis and the cells isolated. These cells, mainly macrophages, were labelled with 14C‐arachidonic acid and stimulated with the calcium ionophore A23187. The metabolites formed were separated by HPLC. The main substances formed by the ascites cells were leukotriene B4, 5‐hydroxy‐6,8,11,14 eicosatetraenoic acid and leukotriene C4. Smaller amounts of thromboxane B2, 12‐hydroxy‐5,8,10 heptodecatrienoic acid and 6‐keto‐prostaglandin F1α were isolated. Human peritoneal macrophages are therefore capable of producing leukotrienes and prostaglandins. Production of these substances might play a role in some of the complications of patients with liver cirrhosis and ascites.

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