Abstract

The anti-inflammatory mechanism of iodine-enriched egg was investigated in mice by means of arachidonic acid-induced ear inflammation. The lipid fraction of iodine-enriched egg was capable of suppressing the increase in ear weight induced by arachidonic acid in a dose-dependent manner. The lipid fraction was further separated into neutral and polar lipid fractions. Of these two fractions, only the neutral lipid fraction was capable of suppressing LT-C 4 production in arachidonic acid inflammation. Neither the neutral nor polar lipid fractions of ordinary egg, however, showed any anti-inflammatory effect. These results suggest that the anti-inflammatory activity of iodine-enriched egg is present in the neutral lipid fraction, and its mechanism is assumed to be inhibition of LT-C 4 production.

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