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[Study on the pharmacokinetics of scutellarin in dogs].

AIM
To determine scutellarin in dog plasma and study the pharmacokinetics of scutellarin in the dog.


METHODS
Scutellarin in plasma of six dogs at different sampling time was determined after single dose of 120 mg i.v. by RP-HPLC. The mean plasma concentration-time curve was protracted and pharmacokinetic parameters were calculated.


RESULTS
The concentration-time curve of scutellarin can be fitted to a three-compartment model with the main pharmacokinetic parameters as follows: T1/2 gamma, T1/2 alpha and T1/2 beta were (1.1 +/- 0.8) min, (7.0 +/- 2.8) min and (52 +/- 29) min, respectively, Vc was (880 +/- 508) mL, CL was (190 +/- 54) mL.min-1, AUC0-90 and AUC0-infinity were (574 +/- 134) mg.min.L-1 and (559 +/- 132) mg.min.L-1 respectively.


CONCLUSION
The concentration of scutellarin in plasma declined rapidly after single dose of 120 mg i.v. in dogs, and this suggested that the T1/2 of scutellarin should be taken into account in preparation exploitation and drug administration.