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Scopolin isolated from Erycibe obtusifolia Benth stems suppresses adjuvant-induced rat arthritis by inhibiting inflammation and angiogenesis.

Abstract：

:Despite scopolin is a main coumarin constituent in the stems of Erycibe obtusifolia Benth, a herb drug that has long been utilized in traditional Chinese medicine for the treatment of rheumatoid arthritis, little information is available about the pharmacological activities of this compound. The present study was performed to investigate the anti-rheumatic effects of scopolin in adjuvant-induced arthritis (AIA) in rats, and explore the underlying mechanisms of action in views of anti-inflammatory and anti-angiogenic properties in the synovial tissues. Scopolin (50, 100 mg/kg), injected intraperitoneally for 10 days from the onset of secondary response, significantly inhibited both inoculated and non-inoculated paw swelling as well as articular index scores in AIA. Meanwhile, the mean body weight of rats treated with scopolin was higher than that of model group. Rats treated with high dose of scopolin (100 mg/kg) preserved a nearly normal histological architecture of the joints and showed a significant reduction of the new blood vessels in the synovial tissues. Additionally, scopolin could reduce IL-6, VEGF and FGF-2 expressions in rat synovial tissues. In conclusion, scopolin can reduce the clinical symptoms of rat AIA by inhibiting inflammation and angiogenesis, and this compound may be a potent agent for angiogenesis related diseases and can serve as a structural base for screening more potent synthetic analogs.

journal_name

Int Immunopharmacol

journal_title

International immunopharmacology

authors

Pan R,Dai Y,Gao X,Xia Y

doi

10.1016/j.intimp.2009.02.019

subject

Has Abstract

pub_date

2009-07-01 00:00:00

pages

859-69

issue

7-8

eissn

1567-5769

issn

1878-1705

pii

S1567-5769(09)00108-8

journal_volume

9

pub_type

杂志文章

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