Pharmacokinetics of crocetin in rats.
- Author:
Tong-zheng LIU
1
;
Zhi-yu QIAN
Author Information
- Publication Type:Journal Article
- MeSH: Animals; Antineoplastic Agents, Phytogenic; blood; isolation & purification; pharmacokinetics; Carotenoids; blood; isolation & purification; pharmacokinetics; Chromatography, High Pressure Liquid; methods; Crocus; chemistry; Female; Male; Plants, Medicinal; chemistry; Rats; Rats, Sprague-Dawley
- From: Acta Pharmaceutica Sinica 2002;37(5):367-369
- CountryChina
- Language:Chinese
-
Abstract:
AIMTo develop an HPLC method for the determination of crocetin in rat plasma and study the pharmacokinetics in rats.
METHODSHypersil C18 column (5 microns, 4.6 mm x 200 mm) was used at column temperature 30 degrees C. The mobile phase consisted of methanol-water-acetic acid (75:24.5:0.5) at the flow rate of 1.0 mL.min-1. The UV detection wave length was 423 nm.
RESULTSThe calibration curve was linear (gamma = 0.9996) in the range from 0.49 microgram.mL-1 to 7.87 micrograms.mL-1 for crocetin. The mean recovery was 105.2%. The lowest detectable concentration of crocetin was 0.14 microgram.mL-1 (S/N = 3). The RSDs of within-day and between-day were all less than 5%. The plasma crocetin was steady. The HPLC method of determination of crocetin in the plasma was established. After single dose of 50 mg.kg-1 ig in 10 rats, the main pharmacokinetic parameters were estimated as follows: T1/2 alpha (30 +/- 6) min, Tmax(65 +/- 16) min, Cmax(5.0 +/- 1.0) microgram.mL-1, AUC0-T(845 +/- 109) microgram.min.mL-1, Vd(5.0 +/- 0.8) L.kg-1. Crocetin was shown to be absorbed into the blood through the gastrointestinal tract.
CONCLUSIONThis method is quick, precise and reliable. Crocetin was shown to be quickly absorbed in rats.