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ORIGINAL ARTICLE
Year : 2016  |  Volume : 12  |  Issue : 46  |  Page : 109-113

Neuroprotective properties of compounds extracted from Dianthus superbus L. against glutamate-induced cell death in HT22 cells


1 Department of Medical Biomaterials Engineering, College of Biomedical Science, Kangwon National University, Chuncheon 200-701, Korea
2 Department of Medical Biomaterials Engineering, College of Biomedical Science; Department of Medical Biomaterials Engineering, Research Institute of Biotechnology, Kangwon National University, Chuncheon 200-701, Korea

Correspondence Address:
Choong Je Ma
Department of Medical Biomaterials Engineering, College of Biomedical Science, Kangwon National University, Hyoja-2 Dong, Chuncheon 200701
Korea
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0973-1296.177905

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Background: Dianthus superbus L. has been used in Chinese herbal medicine as a diuretic and anti-inflammatory agent. Objective: In this study, we isolated ten bioactive compounds from D. superbus and evaluated their neuroprotective activity against glutamate-induced cell death in the hippocampal neuronal HT22 cells. Materials and Methods: New compound, (E)-methyl-4-hydroxy-4-(8a-methyl-3-oxodecahydronaphthalen-4a-yl) (1) and, nine known compounds, diosmetin-7-O (2'',6''-di-O-α-L-rhamnopyranosyl)-β-D-glucopyranoside (2), 4-hydroxy-3-methoxy-pentyl ester benzenepropanoic acid (3), vanillic acid (4), 4-hydroxy-benzeneacetic acid (5), 4-methoxybenzeneacetic acid (6), (E)-4-methoxycinnamic acid (7), 3-methoxy-4-hydroxyphenylethanol (8), hydroferulic acid (9), and methyl hydroferulate (10), were isolated by bioactivity-guided separation. Structures of the isolated compounds were identified on the basis of 1H nuclear magnetic resonance (NMR), 13C NMR, and two-dimensional NMR spectra, while their neuroprotective properties were evaluated by performing the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Results: D. superbus extract had a neuroprotective effect and isolated 10 compounds. Among the compounds, compounds 5 and 6 effectively protected HT22 cells against glutamate toxicity. Conclusion: In conclusion, the extract of D. superbus and compounds isolated from it exhibited neuroprotective properties, suggesting therapeutic potential for applications in neurotoxic diseases.


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