Influence of chitosan nanoparticles as the absorption enhancers on salvianolic acid B in vitro and in vivo evaluation

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Abstract

Background: Salvianolic acid B (SalB) represents the most abundant and bio-active phenolic constituent among the water-soluble compounds of Salvia miltiorrhiza. But the therapeutic potential of SalB has been significantly restricted by its poor absorption. Methods: In this study, chitosans (CS) and CS nanoparticles (NPs) with different molecular weights (MWs), which have influence on the absorption of SalB, was also investigated. Results: As a preliminary study, water-soluble CS with various MWs (3, 30, 50, and 100 kDa) was chosen. We investigated the MW-dependent Caco-2 cell layer transport phenomena in vitro of CS and NPs at concentrations (4 μg/ml, w/v). SalB, in presence CS or NPs has no significant toxic effect on Caco-2 cell. As the MW increases, the absorption enhancing effect of CS increases. However, as the MW decreases, the absorption enhancing effect of NPs increases. The AUC 0-∞ of the SalB-100 kDa CS was 4.25 times greater than that of free SalB. And the AUC 0-∞ of the SalB-3 kDa NPs was 16.03 times greater than that of free SalB. Conclusion: CS and NPs with different MWs as the absorption enhancers can promote the absorption of SalB. And the effect on NPs is better than CS.

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Jin, X., Zhang, S. B., Li, S. M., Liang, K., & Jia, Z. Y. (2016). Influence of chitosan nanoparticles as the absorption enhancers on salvianolic acid B in vitro and in vivo evaluation. Pharmacognosy Magazine, 12(45), 57–63. https://doi.org/10.4103/0973-1296.176047

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