采用超高效液相色谱/四极杆飞行时间质谱法测定大鼠体内冬凌草甲素的代谢产物。
Metabolic Profile of Dendrobine in Rats Determined by Ultra-high-performance Liquid Chromatography/Quadrupole Time-of-flight Mass Spectrometry.
机构信息
The Second Clinical Medical College of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Traditional Chinese Medicine, Guangzhou 510006, China.
Guangdong Food and Drug Administration, Guangzhou510080, China.
出版信息
Comb Chem High Throughput Screen. 2021;24(9):1364-1376. doi: 10.2174/1386207323666201023115744.
AIMS
Dendrobine is a major alkaloid present mainly in dendrobium nobile Lindl. It has been reported to have analgesic, antipyretic, lower heart rate and blood pressure and other pharmacologic activities. Despite its critical pharmacological function, its metabolite profiling is still unclear.
METHODS
In this study, the in vivo metabolite profiling of dendrobine in rats was investigated using ultra-performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry (UPLC/Q-TOF-MS). The metabolites were predicted using MetabolitePilotTM software with a mass defect filter (MDF) technique. These predicted metabolites were further analyzed by MS spectra and compared with the detailed fragmentation pathway of the dendrobine standard and literature data.
RESULTS
Total of 59 metabolites were identified for the first time in rat plasma and urine after oral administration of dendrobine. Demethylated, dehydrogenated, hydroxylated, ketonizated and glucuronide were the major metabolic pathways.
CONCLUSION
This research provides scientific and reliable support for full understanding of the metabolic fate of dendrobine in vivo.
目的
石斛碱是一种主要存在于铁皮石斛中的生物碱。已有报道称其具有镇痛、解热、降心率和降血压等药理活性。尽管其具有重要的药理功能，但对其代谢产物的分析仍不清楚。
方法
本研究采用超高效液相色谱-四极杆飞行时间串联质谱联用技术（UPLC/Q-TOF-MS）研究了石斛碱在大鼠体内的代谢产物。使用代谢物鉴定软件（MetabolitePilotTM）结合质量亏损过滤（MDF）技术预测代谢产物。通过 MS 图谱对这些预测的代谢产物进行进一步分析，并与石斛碱标准品和文献数据的详细裂解途径进行比较。
结果
首次在大鼠口服石斛碱后的血浆和尿液中鉴定出 59 种代谢产物。去甲基化、脱氢、羟化、酮化和葡萄糖醛酸化是主要的代谢途径。
结论
本研究为全面了解石斛碱在体内的代谢命运提供了科学可靠的依据。
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