| Literature DB >> 22822380 |
Takashi Maoka1, Harukuni Tokuda2, Nobutaka Suzuki2, Hideaki Kato3, Hideo Etoh3.
Abstract
Astaxanthin captured peroxynitrite to form nitroastaxanthins. 15-Nitroastaxanthin was a major reaction product of astaxanthin with peroxynitrite. Here, the anti-oxidative, anti-tumor-promoting, and anti-carcinogensis activities of 15-nitroastaxanthin were investigated. In addition to astaxanthin, 15-nitroastaxanthin showed excellent singlet oxygen quenching activity. Furthermore, 15-nitroastaxanthin showed inhibitory effects of in vitro Epstein-Barr virus early antigen activation and two-stage carcinogensis on mouse skin papillomas. These activities were slightly higher than those of astaxanthin. Similar results were obtained for the 15-nitrolutein, a major reaction product of lutein with peroxynitrite.Entities:
Keywords: 15-nitroastaxanthin; 15-nitrolutein; anti-carcinogensis activity; anti-oxidative activity; carotenoid
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Year: 2012 PMID: 22822380 PMCID: PMC3397447 DOI: 10.3390/md10061391
Source DB: PubMed Journal: Mar Drugs ISSN: 1660-3397 Impact factor: 6.085