Chen Jing, Zhang Jingqing, Zhao Hua, et al. Physicochemical characterization of cyclovirobuxine D hydroxypropyl-β-cyclodextrin and its oral bioavailability in rats[J]. Journal of Chongqing Medical University, 2017,42(2):200-204.
Chen Jing, Zhang Jingqing, Zhao Hua, et al. Physicochemical characterization of cyclovirobuxine D hydroxypropyl-β-cyclodextrin and its oral bioavailability in rats[J]. Journal of Chongqing Medical University, 2017,42(2):200-204. DOI: 10.13406/j.cnki.cyxb.000948.
Objective:To characterize the physicochemical properties of cyclovirobuxine D hydroxypropyl-β-cyclodextrin complex(CBHD)and to explore its pharmacokinetic features in rats. Methods:CBHD were characterized by infrared spectroscopy and differential scanning calorimetry. Blood was collected from retinal venous plexus of SD rats after oral administration of CBHD and CB
and the blood concentration was determined by HPLC/FLD. Results:CBHD showed different physicochemical propertie;a new substance peak was shown in the DSC analysis of CBHD. The pharmacokinetic parameters of CBHD and CB were calculated as follows:Cmax(76.83±6.73)μg/L and(69.27±8.66)μg/L
Tmax(6.00±0.00)h and(4.33±0.00)h
AUC0
t
(1 541.04±178.61)μg/(L·h)and(619.93±75.67) μg/(L·h). Conclusion:The relative bioavailability of CBHD is 248.58%. CBHD significantly increases the bioavailability of CB in rats.