Preparation of baicalin nanocrystal pellets and preliminary study on its pharmacokinetics.
- Author:
Shi-Ying JIN
1
;
Hai-Long YUAN
;
Shi-Xiao JIN
;
Qing-Yuan LV
;
Jin-Xia BAI
;
Jin HAN
Author Information
- Publication Type:Journal Article
- MeSH: Administration, Oral; Animals; Biological Availability; Chromatography, High Pressure Liquid; Flavonoids; administration & dosage; chemistry; pharmacokinetics; Male; Nanoparticles; chemistry; ultrastructure; Particle Size; Rats
- From: China Journal of Chinese Materia Medica 2013;38(8):1156-1159
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo prepare baicalin nanocrystal (BC-NC) and evaluate its pharmacokinetics in rats.
METHODBaicalin nanosuspensions (BC-NS) were prepared by the high pressure homogenization technology combined with ultrasonic, and then BC-NS were solidificated into BC-NC pellets by removing the water through fluid-bed drying. Its morphology, mean diameter and Zeta-potential were determined. An HPLC method was employed to determine the concentration of baicalin in plasma, and the bioavailability of the nanocrystal was compared with the reference group by oral administration in Wistar rats.
RESULTThe nanocrystals observed by scanning electron microscopy were irregular granulated, and the mean particle sizes of BC-NC were (248 +/- 6) nm. Its polydispersity index (PI) and zeta-potential were (0.181 +/- 0.065), (-32.3 +/- 1.8) mV, respectively. The pharmacokinetic parameters showed that the C(max) was (16.54 +/- 1.73) mg x L(-1) and the AUC(0-24 h) was (206.96 +/- 21.23) mg x L(-1) x h, which were significantly enhanced compared with the baicalin bulk and baicalin physical mixture (BC-PM) formulation, respectively (P < 0.01).
CONCLUSIONBaicalin nanocrystal can significantly improve the bioavailability of baicalin.
