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http://dx.doi.org/10.5352/JLS.2017.27.7.812

Pharmacokinetics and the Intestinal Permeability of Amaranth in Rats  

Han, Youjin (College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University)
Goo, Soo Hyeon (College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University)
Nam, So Jeong (College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University)
Kang, Yun Ju (College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University)
Kwon, Mihwa (College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University)
Song, Im-Sook (College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University)
Publication Information
Journal of Life Science / v.27, no.7, 2017 , pp. 812-816 More about this Journal
Abstract
Although amaranth, a red-colored tar dye, is usually used in foods, cosmetics, and pharmaceutics, its bioavailability and intestinal absorption have not previously been investigated. Therefore, the purpose of this study was to investigate the pharmacokinetics properties and intestinal permeability of amaranth in rats following the intravenous and oral administration of this dye. Amaranth rapidly disappeared from the plasma following the intravenous injection, with a half-life of 38.8 minutes. However, the plasma concentration of amaranth was increased to 400 minutes following the oral administration of amaranth, and the absorption time and bioavailability of amaranth were calculated to be 356 minutes and 55.6%, respectively. This suggests that once amaranth exists in the gut, this dye may be efficiently and effectively absorbed. Consistent with this result, the intestinal permeability of amaranth was comparable to atenolol, a marker compound of moderate permeability, and to one-third of caffeine's intestinal permeability (a highly permeable compound). In conclusion, a significantly long absorption time and substantial intestinal absorption of amaranth was observed following the oral administration of amaranth at a dose of 300 mg/kg in rats, despite the rapid elimination of this dye from the plasma. These results may suggest the necessity of a careful and limited use of amaranth dye when it is added to food, lip-care cosmetics, and orally administered pharmaceutics.
Keywords
Absorption; amaranth; intestinal permeability; oral bioavailability; tar dye;
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