Zhang Z, Liu YY, Su MQ, Liang XF, Wang WF, Zhu X. Pharmacokinetics, tissue distribution and excretion study of dl-praeruptorin A of Peucedanum praeruptorum in rats by liquid chromatography tandem mass spectrometry.
PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2011;
18:527-532. [PMID:
21036581 DOI:
10.1016/j.phymed.2010.09.009]
[Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Revised: 08/14/2010] [Accepted: 09/17/2010] [Indexed: 05/30/2023]
Abstract
dl-Praeruptorin A (Pd-Ia), isolated from Chinese traditional herbal medicine Peucedanum praeruptorum Dunn, has been proved to be a novel Ca²+-influx blocker and K+-channel opener, and displayed bright prospects in prevention and therapy of cardiac diseases. The aim of this study was to investigate the pharmacokinetics, tissue distribution and excretion of Pd-Ia in rats following a single intravenous (i.v.) administration. The levels of Pd-Ia in plasma, tissues, bile, urine and feces were measured by a rapid and sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method. The results showed that Pd-Ia was rapidly distributed and then eliminated from rat plasma and manifested linear dynamics in dose range of 5-20 mg/kg. The mean elimination half-life (t(½) of Pd-Ia for 5, 10 and 20 mg/kg dose were 57.46, 60.87 and 59.01 min, respectively. The major distribution tissues of Pd-Ia in rats were spleen, heart and lung, and low polarity enabled Pd-Ia to cross the blood-brain barrier. There was no long-term accumulation of Pd-Ia in rat tissues. Total recoveries of Pd-Ia within 24 h were low (0.097% in bile, 0.120% in urine and 0.009% in feces), which might be resulted from liver first pass effect.
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