Abstract
To determine glycyrrhetinic acid concentration in rat plasma and concentration of calcium (Ca), copper (Cu), iron (Fe), potassium (K), magnesium (Mg) and sodium (Na) in rat serum after oral administration by LC-MS/MS and the flame atomic absorption method, and analyze the effect of glycyrrhetinic acid on the six elements in serum. A similar variation trend between the concentration of glycyrrhetinic acid in plasma and that of Na, Cu elements in serum after oral administration of glycyrrhetinic acid was observed. Glycyrrhetinic acid in plasma at 2 h after administration reached the peak. Meanwhile, the concentration of Na and Cu at 4 h after the administration of glycyrrhetinic acid exhibited a significant increase (P < 0.05). Moreover, an increasing glycyrrhetinic acid dosage could result in the accumulation of Cu and Na in rat serum. Compared with the control group, the concentration of Cu and Na in the the glycyrrhetinic acid administration group with doses of 200 and 400 mg x kg(-1) revealed a significant increase (P < 0.05). However, glycyrrhetinic acid did not exhibit the great impact on the concentration of other elements in serum. This study focuses on the effect of oral administration of glycyrrhetinic acid on six metal elements in rat serum and provides an experimental basis for the adverse effect of glycyrrhetinic acid in clinical-applications.
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