Study on local pharmacokinetics of baicalin gel after transdermal administration in rats by skin microdialysis in vivo
doi: 10.3969/j.issn.1006-0111.2014.06.011
- Received Date: 2014-01-02
- Rev Recd Date: 2014-09-03
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Key words:
- baicalin gel /
- microdialysis /
- dermatopharmacokinetics /
- rat
Abstract: Objective To develop a novel skin microdialysis technology in vivo,and to determine the pharmacokinetic of baicalin after transdermal administration in rats. Methods An HPLC-MS/MS method used for the determination of baicalin in skin microdialysis samples was established,SD rats were pretreated with skin microdialysis operation under anesthesia, and then the baicalin gel was applied to the skin surface of probe in vivo. The baicalin concentration of skin microdialysates was determined, the time curve of baicalin concentration was drawn and the topical pharmacokinetics parameters of percutaneous absorption was calculated. Results Baicalin was optimized at the transitions m/z 447.3→271.2. The linearity correlation was good and the assay exhibited good precision and accuracy. The subcutaneous probe recovery of baicalin in vivo was(24.40±0.91)% and was stable over the 240 min study period. Baicalin could be detected in the microdialysis samples after transdermal administration, and its concentration continued to rise in 8 h. AUC0-t in skin tissue was(50.04±34.17) mg·min·L-1. Conclusion The method of skin microdialysis in vivo could be used in the local pharmacokinetic research of baicalin.
Citation: | LOU Yuefen, ZHU Quangang, YOU Benming, LI Jie, GU Xiaoyan, ZHANG Ruoxi. Study on local pharmacokinetics of baicalin gel after transdermal administration in rats by skin microdialysis in vivo[J]. Journal of Pharmaceutical Practice and Service, 2014, 32(6): 444-447. doi: 10.3969/j.issn.1006-0111.2014.06.011 |