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Potential Antioxidative and Anti-hyperuricemic Components in A. Gray Revealed by Bio-affinity Ultrafiltration with SOD and XOD

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Journal Front Pharmacol
Date 2023 Nov 29
PMID 38027025
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Abstract

A. Gray () is a traditional Chinese medicine with various pharmacological effects. However, its antioxidant and anti-hyperuricemia components and mechanisms of action have not been explored yet. In this study, we first assessed the antioxidant potential of with 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and ferric ion reducing antioxidant power (FRAP) assays. The results suggested that the ethyl acetate (EA) fraction of not only exhibited the strongest DPPH, ABTS radical scavenging and ferric-reducing activities, but also possessed the highest total phenolic and total flavonoid contents among the five fractions. After that, the potential superoxide dismutase (SOD) and xanthine oxidase (XOD) ligands from the EA fraction were quickly screened and identified through the bio-affinity ultrafiltration liquid chromatography-mass spectrometry (UF-LC-MS). Accordingly, norbergenin, catechin, procyanidin B2, 4-O-galloylbergenin, 11-O-galloylbergenin, and gallic acid were considered to be potential SOD ligands, while gallic acid, 11-O-galloylbergenin, catechin, bergenin, and procyanidin B2 were recognized as potential XOD ligands, respectively. Moreover, these six ligands effectively interacted with SOD in molecular docking simulation, with binding energies (BEs) ranging from -6.85 to -4.67 kcal/mol, and the inhibition constants (Ki) from 9.51 to 379.44 μM, which were better than the positive controls. Particularly, catechin exhibited a robust binding affinity towards XOD, with a BE value of -8.54 kcal/mol and Ki value of 0.55 μM, which surpassed the positive controls. In conclusion, our study revealed that possessed remarkable antioxidant and anti-hyperuricemia activities and that the UF-LC-MS method is suitable for screening potential ligands for SOD and XOD from medicinal plants.

References
1.
Xu Y, Chen G, Guo M . Antioxidant and Anti-Inflammatory Activities of the Crude Extracts of from Kenya and Their Correlations with Flavonoids. Antioxidants (Basel). 2019; 8(8). PMC: 6721178. DOI: 10.3390/antiox8080296. View

2.
Payne A, Mazzer A, Clarkson G, Taylor G . Antioxidant assays - consistent findings from FRAP and ORAC reveal a negative impact of organic cultivation on antioxidant potential in spinach but not watercress or rocket leaves. Food Sci Nutr. 2014; 1(6):439-44. PMC: 3951540. DOI: 10.1002/fsn3.71. View

3.
Brillo V, Chieregato L, Leanza L, Muccioli S, Costa R . Mitochondrial Dynamics, ROS, and Cell Signaling: A Blended Overview. Life (Basel). 2021; 11(4). PMC: 8070048. DOI: 10.3390/life11040332. View

4.
N Kolodkin A, Sharma R, Colangelo A, Ignatenko A, Martorana F, Jennen D . ROS networks: designs, aging, Parkinson's disease and precision therapies. NPJ Syst Biol Appl. 2020; 6(1):34. PMC: 7589522. DOI: 10.1038/s41540-020-00150-w. View

5.
Liu N, Xu H, Sun Q, Yu X, Chen W, Wei H . The Role of Oxidative Stress in Hyperuricemia and Xanthine Oxidoreductase (XOR) Inhibitors. Oxid Med Cell Longev. 2021; 2021:1470380. PMC: 8019370. DOI: 10.1155/2021/1470380. View