Study on pharmacokinetics of scutellarin in rabbits / 药学学报
Acta Pharmaceutica Sinica
; (12): 775-778, 2003.
Article
in En
| WPRIM
| ID: wpr-266605
Responsible library:
WPRO
ABSTRACT
<p><b>AIM</b>To establish a solid phase extraction-high performance liquid chromatographic (SPE-HPLC) method for determining plasma scutellarin concentration, and study its pharmacokinetics after i.v. breviscapine in rabbits.</p><p><b>METHODS</b>Methanol-water-phosphoric acid (50500.5) mixture was used as mobile phase, Nucleosil C18 column (250 mm x 4.6 mm ID) was selected. The wavelength of UV detection was 335 nm. Fifteen rabbits, randomized into 3 groups, were given breviscapine i.v. at the dose of 10, 20 and 40 mg.kg-1. Scutellarin in plasma was determined by SPE-HPLC method.</p><p><b>RESULTS</b>Linearity was obtained over the range of 0.02-10.0 mg.L-1 of scutellarin. The method recovery was 96.15%-99.31%; the within-day and between-day RSDs were all below 10%. After i.v. 10, 20 and 40 mg.kg-1 of breviscapine to rabbits, the concentration-time curve of scutellarin fitted to a three compartment model. The main pharmacokinetic parameters showed no significant difference between low and medium doses, but the difference was significant between high dose and other doses.</p><p><b>CONCLUSION</b>This assay method was accurate, sensitive, simple and suitable for the measurement of plasma scutellarin concentration. The pharmacokinetic characteristics were found to fit a three-compartment model following i.v. injection of breviscapine to rabbits. The changes of drug concentration in vivo exhibited linear kinetics ove the dosage range of 10-20 mg.kg-1, but when the dosage was 40 mg.kg-1, the linear kinetic properties disappeared.</p>
Full text:
1
Index:
WPRIM
Main subject:
Flavonoids
/
Blood
/
Pharmacokinetics
/
Chromatography, High Pressure Liquid
/
Area Under Curve
/
Apigenin
/
Methods
Type of study:
Prognostic_studies
Limits:
Animals
Language:
En
Journal:
Acta Pharmaceutica Sinica
Year:
2003
Type:
Article