A new biocompatible microemulsion increases extraction yield and bioavailability of Andrographis paniculata

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• 作者：Xiao-Yan LIU^a ; Xin NIU^b ; Qian-Jin FENG^c ; Xue-Zhi YANG^b ; Dan-Wei WANG^b ; Tong ZHAO^a ; Lei LI^a ; Hong DU^a ; ^{duhong@vip.163.com" class="auth_mail" title="E-mail the corresponding author} ; ^{duhong1979@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Andrographis paniculata ; Biocompatible microemulsion ; Andrographolide ; Bioavailability ; Ethanol extract
• 刊名：Chinese Journal of Natural Medicines
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：14
• 期：9
• 页码：683-691
• 全文大小：1535 K

文摘

The purpose of this study was to design and prepare a biocompatible microemulsion of Andrographis paniculata (BMAP) containing both fat-soluble and water-soluble constituents. We determined the contents of active constituents of BMAP and evaluated its bioavailability. The biocompatible microemulsion (BM), containing lecithin and bile salts, was optimized in the present study, showing a good physical stability. The mean droplet size was 19.12 nm, and the average polydispersity index (PDI) was 0.153. The contents of andrographolide and dehydroandrographolide in BMAP, as determined by high performance liquid chromatography (HPLC), were higher than that in ethanol extraction. The pharmacokinetic results of BMAP showed that the AUC_0–7 and AUC_0→∞ values of BMAP were 2.267 and 27.156 μg·mL⁻¹·h⁻¹, respectively, and were about 1.41-fold and 6.30-fold greater than that of ethanol extraction, respectively. These results demonstrated that the bioavailability of and rographolide extracted by BMAP was significantly higher than that extracted by ethanol. In conclusion, the BMAP preparation displayed ann improved dose form for future clinical applications.