A new biocompatible microemulsion increases extraction yield and bioavailability of Andrographis paniculata.
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 AUC0-7 and AUC0→∞ 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.
School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
Xiao-Yan
XY
Liu
School of Basic Medical Sciences, Beijing University of Chinese Medicine, Beijing 100029, China.
Xin
X
Niu
Shanxi University of Traditional Chinese Medicine, Taiyuan 030024, China.
Qian-Jin
QJ
Feng
School of Basic Medical Sciences, Beijing University of Chinese Medicine, Beijing 100029, China.
Xue-Zhi
XZ
Yang
School of Basic Medical Sciences, Beijing University of Chinese Medicine, Beijing 100029, China.
Dan-Wei
DW
Wang
School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
Tong
T
Zhao
School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
Lei
L
Li
School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China. Electronic address: duhong@vip.163.com.
Hong
H
DU
D035685:Andrographis / Q000737:chemistry*; D005591:Chemical Fractionation / Q000295:instrumentation / Q000379:methods*; D002851:Chromatography, High Pressure Liquid; D004224:Diterpenes / Q000032:analysis / Q000302:isolation & purification; D004365:Drugs, Chinese Herbal / Q000032:analysis / Q000302:isolation & purification*; D004655:Emulsions / Q000737:chemistry
D004224:Diterpenes; D004365:Drugs, Chinese Herbal; D004655:Emulsions; C030419:andrographolide
Andrographis paniculata; Andrographolide; Bioavailability; Biocompatible microemulsion; Ethanol extract