PMID- 15627278 OWN - NLM STAT- MEDLINE DCOM- 20051121 LR - 20191210 IS - 0269-3879 (Print) IS - 0269-3879 (Linking) VI - 19 IP - 5 DP - 2005 Jun TI - Study on the bioavailability of puerarin from Pueraria lobata isoflavone self-microemulsifying drug-delivery systems and tablets in rabbits by liquid chromatography-mass spectrometry. PG - 375-8 AB - To evaluate the bioavailability of puerarin from Pueraria lobata isoflavone self-microemulsifying drug delivery systems (SMEDDS) and Yufengningxin tablets, a rapid and specific liquid chromatography--mass spectrometric method was developed and validated to determine puerarin in rabbit serum. The analyte was extracted from serum samples by precipitating the serum proteins, separated on a Diamonsil C(18) column and detected by mass spectrometry with an electrospray ionization interface. 4-Hydroxybenzaldehyde was used as the internal standard. The method has a limit of quantitation of 10 ng/mL using 200 microL serum. The intra-day relative standard deviations (RSDs) ranged from 3.7 to 6.9% and inter-day RSDs were within 6.5%. After administration of SMEDDS and tablets to rabbits, a significant difference was observed in main pharmacokinetic parameters of t(max), C(max) and AUC(0--infinity) between SMEDDS and tablets, and a 2.2-fold increase in the relative bioavailability of puerarin was observed with the SMEDDS compared with Yufengningxin tablets. It was concluded that the absorption of puerarin from Pueraria lobata isoflavone SMEDDS was enhanced. CI - (c) 2004 John Wiley & Sons, Ltd. FAU - Cui, Shengmiao AU - Cui S AD - School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China. FAU - Zhao, Chunshun AU - Zhao C FAU - Tang, Xing AU - Tang X FAU - Chen, Dawei AU - Chen D FAU - He, Zhonggui AU - He Z LA - eng PT - Journal Article PT - Validation Study PL - England TA - Biomed Chromatogr JT - Biomedical chromatography : BMC JID - 8610241 RN - 0 (Emulsions) RN - 0 (Isoflavones) RN - Z9W8997416 (puerarin) SB - IM MH - Administration, Oral MH - Animals MH - Biological Availability MH - Chromatography, Liquid/methods MH - Drug Delivery Systems MH - Emulsions MH - Isoflavones/*pharmacokinetics MH - Male MH - Mass Spectrometry MH - Pueraria/*chemistry MH - Rabbits EDAT- 2005/01/01 09:00 MHDA- 2005/12/13 09:00 CRDT- 2005/01/01 09:00 PHST- 2005/01/01 09:00 [pubmed] PHST- 2005/12/13 09:00 [medline] PHST- 2005/01/01 09:00 [entrez] AID - 10.1002/bmc.460 [doi] PST - ppublish SO - Biomed Chromatogr. 2005 Jun;19(5):375-8. doi: 10.1002/bmc.460.