A Comparative Study on Hulled Adlay and Unhulled Adlay through Evaluation of Their LPS-Induced Anti-Inflammatory Effects, and Isolation of Pure Compounds
Coicis semen (=the hulled seed of Coix lacryma‐jobi L. var. ma‐yuen (Rom.Caill.) Stapf; Gramineae), commonly known as adlay and Job's tears, is widely used in traditional medicine and as a nutritious food. Bioassay‐guided fractionation of the AcOEt fraction of unhulled adlays, using measurement...
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Published in | Chemistry & biodiversity Vol. 12; no. 3; pp. 380 - 387 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Zürich
WILEY-VCH Verlag
01.03.2015
WILEY‐VCH Verlag Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | Coicis semen (=the hulled seed of Coix lacryma‐jobi L. var. ma‐yuen (Rom.Caill.) Stapf; Gramineae), commonly known as adlay and Job's tears, is widely used in traditional medicine and as a nutritious food. Bioassay‐guided fractionation of the AcOEt fraction of unhulled adlays, using measurement of nitric oxide (NO) production on lipopolysaccharide (LPS)‐stimulated RAW 264.7 macrophage cells, led to the isolation and identification of two new stereoisomers, (+)‐(7′S,8′R,7″S,8″R)‐guaiacylglycerol β‐O‐4′‐dihydrodisinapyl ether (1) and (+)‐(7′S,8′R,7″R,8″R)‐guaiacylglycerol β‐O‐4′‐dihydrodisinapyl ether (2), together with six known compounds, 3–8. Compounds 3 and 4 exhibited inhibitory activities on LPS‐induced NO production with IC50 values of 1.4 and 3.7 μM, respectively, and suppressed inducible nitric oxide synthase (iNOS) and cyclooxygenase‐2 (COX‐2) protein expressions in RAW 264.7 macrophage cells. Simple high‐performance liquid chromatography with ultraviolet detection (HPLC/UV) was used to compare the AcOEt fraction of unhulled adlays responsible for the anti‐inflammatory activity in RAW 264.7 cells and the inactive AcOEt fraction of hulled adlays. |
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Bibliography: | ark:/67375/WNG-1WBHW2XS-X istex:799EDC82F462C86E5111A6DF7BE89151CEDAC6FE ArticleID:CBDV201400242 These authors contributed equally to this work. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1612-1872 1612-1880 |
DOI: | 10.1002/cbdv.201400242 |