PMID- 34213992 OWN - NLM STAT- MEDLINE DCOM- 20210706 LR - 20221207 IS - 1520-5762 (Electronic) IS - 0363-9045 (Linking) VI - 47 IP - 5 DP - 2021 May TI - Establishment of quantitative methodology for sophoridine analysis and determination of its pharmacokinetics and bioavailability in rat. PG - 741-747 LID - 10.1080/03639045.2021.1934862 [doi] AB - OBJECTIVE: The aim of this study is to develop a rapid and sensitive UPLC-MS/MS approach to determine the sophoridine (SOP) level in rat plasma and the pharmacokinetics of the substance. SIGNIFICANCE: Sophoridine is used as an anti-inflammatory, anti-virus, anti-microbial, and anti-tumor alkaloid. It is essential to explore specific detection methods for the quantitative analysis of SOP in the blood circulation. METHODS: The rat plasma samples were prepared by one-step protein precipitation with acetonitrile. Subsequently, the samples were separated by chromatography using a UPLC BEH C18 reversed-phase with an initial mobile phase of methanol and 0.1% formic acid aqueous solution. The gradient elution was performed at a fixed flow rate of 0.4 mL/min, and multiple reaction monitoring (MRM) mode with an electrospray positive ionization source was employed to detect the transitions of m/z 249.1 --> 84.2 for SOP and m/z 264.3 --> 69.8 for dendrobine (IS). The entire process required 3.5 min for each sample. RESULTS: A linear correlation was established over the range of 2-2000 ng/mL (r(2)>/=0.9954) for SOP in rat plasma with a lower limit of quantification (LLOQ) at 2 ng/mL. The range of accuracy was tested between 94.90% and 100.80%, and the relative standard deviations (RSDs) toward both intra- and inter-day precision were <10%. Thus, this method was successfully applied to a pharmacokinetic study, and the subsequent results demonstrated a low absolute bioavailability of 2.32%. CONCLUSION: The present study established a reliable method that quantified the SOP concentration in rat plasma after administering a dose of 2 mg/kg intravenously or 20 mg/kg orally. FAU - Chen, Mengchun AU - Chen M AD - Department of Pharmacy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. AD - Wenzhou Municipal Key Laboratory of Pediatric Pharmacy, Wenzhou, China. FAU - Jiang, Qi AU - Jiang Q AD - Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. FAU - Zhang, Mingyao AU - Zhang M AD - Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. FAU - Chen, Sailing AU - Chen S AD - Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. FAU - Lou, Junsheng AU - Lou J AD - Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. AD - Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. FAU - Chen, Yijie AU - Chen Y AD - Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. FAU - Wang, Fang AU - Wang F AD - Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. FAU - Wang, Rongyue AU - Wang R AD - Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. LA - eng PT - Journal Article PL - England TA - Drug Dev Ind Pharm JT - Drug development and industrial pharmacy JID - 7802620 RN - 0 (Alkaloids) RN - 0 (Quinolizines) RN - 0 (Matrines) SB - IM MH - *Alkaloids MH - Animals MH - Biological Availability MH - Chromatography, High Pressure Liquid MH - Chromatography, Liquid MH - Quinolizines MH - Rats MH - Rats, Sprague-Dawley MH - Reproducibility of Results MH - *Tandem Mass Spectrometry MH - Matrines OTO - NOTNLM OT - Sophoridine OT - UPLC-MS/MS OT - bioavailability OT - pharmacokinetics OT - rat plasma EDAT- 2021/07/03 06:00 MHDA- 2021/07/07 06:00 CRDT- 2021/07/02 17:12 PHST- 2021/07/03 06:00 [pubmed] PHST- 2021/07/07 06:00 [medline] PHST- 2021/07/02 17:12 [entrez] AID - 10.1080/03639045.2021.1934862 [doi] PST - ppublish SO - Drug Dev Ind Pharm. 2021 May;47(5):741-747. doi: 10.1080/03639045.2021.1934862.