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Preparation of baicalin nanocrystal pellets and preliminary study on its pharmacokinetics / 中国中药杂志
Zhongguo Zhong Yao Za Zhi ; (24): 1156-1159, 2013.
Article de Zh | WPRIM | ID: wpr-350641
Bibliothèque responsable: WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To prepare baicalin nanocrystal (BC-NC) and evaluate its pharmacokinetics in rats.</p><p><b>METHOD</b>Baicalin 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.</p><p><b>RESULT</b>The 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).</p><p><b>CONCLUSION</b>Baicalin nanocrystal can significantly improve the bioavailability of baicalin.</p>
Sujet(s)
Texte intégral: 1 Indice: WPRIM Sujet Principal: Taille de particule / Flavonoïdes / Pharmacocinétique / Biodisponibilité / Chimie / Administration par voie orale / Chromatographie en phase liquide à haute performance / Nanoparticules Limites du sujet: Animals langue: Zh Texte intégral: Zhongguo Zhong Yao Za Zhi Année: 2013 Type: Article
Texte intégral: 1 Indice: WPRIM Sujet Principal: Taille de particule / Flavonoïdes / Pharmacocinétique / Biodisponibilité / Chimie / Administration par voie orale / Chromatographie en phase liquide à haute performance / Nanoparticules Limites du sujet: Animals langue: Zh Texte intégral: Zhongguo Zhong Yao Za Zhi Année: 2013 Type: Article