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Abstract
Recently, a chlorophyll-related compound, pheophytin a, has been identified from an edible green alga, Enteromorpha prolifera (Sujiao-nori in Japanese) as a potent suppressive substance against genotoxin-induced umu C gene expression in a tester bacteria (Okai and Higashi-Okai, 1997, J. Sci. Food Agricul. 71, 531–535). In the present study, anti-inflammatory effects of pheophytin a from Enteromorpha prolifera have been analyzed using in vitro and in vivo experiments. 1. 1. Pheophytin a suppressed the production of superoxide anion (O 2) in mouse macrophages induced by 12- O-tetradecanoylphorbol-13-acetate (TPA) using the cytochrome C reduction method. 2. 2. Pheophytin a caused a suppressive effect against formyl-Met-Leu-Phe (FMLP)-induced chemotaxis of human polymorphonuclear leukocytes (PMNs) in Boyden's chamber experiment. 3. 3. Pheophytin a exhibited a significant suppression against TPA-induced inflammatory reaction such as edema formation in BALB/c mouse ear. These results suggest that pheophytin a from Enteromorpha prolifera has a potent anti-inflammatory activity.
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