PMID- 29404001 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200929 IS - 2095-1779 (Print) IS - 2214-0883 (Electronic) IS - 2214-0883 (Linking) VI - 6 IP - 5 DP - 2016 Oct TI - Quantification of neomangiferin in rat plasma by liquid chromatography-tandem mass spectrometry and its application to bioavailability study. PG - 335-340 LID - 10.1016/j.jpha.2016.03.005 [doi] AB - Neomangiferin, a natural C-glucosyl xanthone, has recently received a great deal of attention due to its multiple biological activities. In this study, a rapid and sensitive ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) method for the quantification of neomangiferin in rat plasma was developed. Using chloramphenicol as an internal standard (IS), plasma samples were subjected to a direct protein precipitation process using methanol (containing 0.05% formic acid). Quantification was performed by multiple reactions monitoring (MRM) method, with the transitions of the parent ions to the product ions of m/z 583.1-->330.9 for NG and m/z 321.1-->151.9 for IS. The assay was shown to be linear over the range of 0.2-400 ng/mL, with a lower limit of quantification of 0.2 ng/mL. Mean recovery of neomangiferin in plasma was in the range of 97.76%-101.94%. Relative standard deviations (RSDs) of intra-day and inter-day precision were both <10%. The accuracy of the method ranged from 94.20% to 108.72%. This method was successfully applied to pharmacokinetic study of neomangiferin after intravenous (2 mg/kg) and intragastric (10 mg/kg) administration for the first time. The oral absolute bioavailability of neomangiferin was estimated to be 0.53%+/-0.08% with an elimination half-life (t(1/2)) value of 2.74+/-0.92 h, indicating its poor absorption and/or strong metabolism in vivo. FAU - Yang, Bo AU - Yang B AD - Department of Pharmacy, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China. FAU - Liu, Zhirui AU - Liu Z AD - Department of Pharmacy, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China. FAU - Shang, Shenglan AU - Shang S AD - Department of Pharmacy, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China. FAU - Qin, Xiaojian AU - Qin X AD - Department of Pharmacy, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China. FAU - Xia, Peiyuan AU - Xia P AD - Department of Pharmacy, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China. LA - eng PT - Journal Article DEP - 20160328 PL - China TA - J Pharm Anal JT - Journal of pharmaceutical analysis JID - 101579451 PMC - PMC5762620 OTO - NOTNLM OT - Bioavailability OT - Neomangiferin OT - Pharmacokinetics OT - Rat plasma OT - UHPLC-MS/MS EDAT- 2016/10/01 00:00 MHDA- 2016/10/01 00:01 PMCR- 2016/03/28 CRDT- 2018/02/07 06:00 PHST- 2015/11/11 00:00 [received] PHST- 2016/03/20 00:00 [revised] PHST- 2016/03/25 00:00 [accepted] PHST- 2018/02/07 06:00 [entrez] PHST- 2016/10/01 00:00 [pubmed] PHST- 2016/10/01 00:01 [medline] PHST- 2016/03/28 00:00 [pmc-release] AID - S2095-1779(16)30025-9 [pii] AID - 10.1016/j.jpha.2016.03.005 [doi] PST - ppublish SO - J Pharm Anal. 2016 Oct;6(5):335-340. doi: 10.1016/j.jpha.2016.03.005. Epub 2016 Mar 28.