We evaluated the antioxidative effects of astaxanthin through the changes in superoxide scavenging activity, levels of hydrogen peroxide and total hydroperoxides in human aqueous humor. The study subjects were 35 patients who underwent bilateral cataract surgery on one side before and the other side after intake of astaxanthin (6 mg/day for 2 weeks). Astaxanthin intake clearly enhanced the superoxide scavenging activity and suppressed the total hydroperoxide production in human aqueous humor, indicating the possibility that astaxanthin has suppressive effects on various oxidative stress related diseases.
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