Identification of Polygonum orientale constituents using high-performance liquid chromatography high-resolution tandem mass spectrometry

Autor: Young Ho Jeon, Xi-Tao Yan, Yeeun Park, Hyeji Shin, Ki Yong Lee
Rok vydání: 2018
Předmět:
Zdroj: Bioscience, Biotechnology, and Biochemistry. 82:15-21
ISSN: 1347-6947
0916-8451
DOI: 10.1080/09168451.2017.1415124
Popis: Our primary focus in this research was to identify and characterize its bioactive compounds for potential therapeutic use. Twenty-seven metabolites of Polygonum orientale were identified using LC-QTOF tandem mass spectrometry. Interestingly, P. orientale extracts included several highly oxygenated flavonoids were isolated from P. orientale by column chromatography. 13C NMR data of highly oxygenated flavonoids (1–7) are reported here for the first time. In addition, nitric oxide, 1,1-diphenyl-2-picrylhydrazyl, and water-soluble tetrazolium salt assays were carried out on the isolated compounds to investigate their anti-inflammatory, anti-oxidant, and neuroprotective activities, respectively. Compounds 1, 2, 3, 5, 7, and 8 significantly attenuated lipopolysaccharide-stimulated NO production in BV2 cells without affecting cell viability. Compounds 9–12 exhibited significant antioxidant activity, while compounds 8, 9, and 12 exhibited protective effects against glutamate-induced neurotoxicity in HT22 cells. Our results indicate that P. orientale is a promising source of natural agents for the potential treatment of inflammation and neurodegenerative diseases. Chemical profile of Polygonum orientale.
Databáze: OpenAIRE