Anti-oxidative and inhibitory activities on nitric oxide (NO) and prostaglandin E-2 (COX-2) production of flavonoids from seeds of Prunus tomentosa Thunberg
- Authors
- Kim, Sung Kyu; Kim, Hyun Jung; Choi, Sun Eun; Park, Kwan Hee; Choi, Hyung Kyun; Lee, Min Won
- Issue Date
- Apr-2008
- Publisher
- PHARMACEUTICAL SOC KOREA
- Keywords
- Prunus tomentosa; rosaceae; flavonoid; antioxidative activity; nitric oxide; cyclooxygenase-2
- Citation
- ARCHIVES OF PHARMACAL RESEARCH, v.31, no.4, pp 424 - 428
- Pages
- 5
- Journal Title
- ARCHIVES OF PHARMACAL RESEARCH
- Volume
- 31
- Number
- 4
- Start Page
- 424
- End Page
- 428
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/23802
- DOI
- 10.1007/s12272-001-1174-9
- ISSN
- 0253-6269
- Abstract
- Chemical investigation of the 80% Me2CO extract from the seeds of Prunus tomentosa led to the isolation and identification of six flavonoids: kaempferol (1), kaempferol 3-O-alpha-L-rhamnopyranoside (2; afzelin), kaempferol 3-O-beta-D-(6-acetyl)-glucopyranosyl(1-->4)-alpha-L-rhamnopyranoside (3; multiflorin A), kaempferol 3-O-beta-D-glucopyranosyl(1-->4)-alpha-L-rhamnopyranoside (4; multiflorin B), quercetin 3-O-alpha-L-rhamnopyranoside (5; quercitrin), and quercetin 3-O-beta-D-glucopyranosyl (1-->4)-alpha-L-rhamnopyranoside (6; multinoside A). Anti-oxidative and inhibitory activities on nitric oxide (NO) and prostaglandin E-2 production in interferon-gamma (INF-gamma) and lipopolysaccharide (LPS)-activated RAW 264.7 cells in vitro (COX-2) of the isolated compounds were evaluated. Compounds 1, 5, and 6 exhibited potent anti-oxidative activity in the DPPH radical scavenging assay with IC50 values of 57.2, 59.4, and 54.3 mu g/mL respectively. The positive control, ascorbic acid, had an IC50 of 55.5 mu g/mL. Compounds 1, 5, and 6 also reduced COX-2 levels in a dose dependent manner with IC50 values of 10.2, 8.7, and 9.6 mu g/mL respectively, with the positive control, indomethacin, having an IC50 of 5.1 mu g/mL. All six compounds inhibited NO production in a dose dependent manner with IC50 values of 35.1, 42.8, 40.0, 44.8, 43.7, and 43.9 mu g/mL respectively, while the positive control, L-NMMA, had an IC50 of 42.1 mu g/mL.
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