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J Ethnopharmacol. 2012 Jan 6;139(1):98-103. doi: 10.1016/j.jep.2011.10.020. Epub 2011 Oct 20.

Inhibitory effects of the root extract of Dipsacus asperoides C.Y. Cheng et al T.M.Ai on collagen-induced arthritis in mice.

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1
Oriental Medicine R&D Center, Dongguk University, Gyeongju 740-814, Republic of Korea.

Abstract

ETHNOPHARMACOLOGICAL RELEVANCE:

Dipsaci radix, the dried root of Dipsacus asperoides C.Y. Cheng et al T.M.Ai is used as a medicinal plant in oriental clinics for the treatment of bone diseases and functions by strengthening bone and healing bone fractures.

AIM OF THE STUDY:

This study investigated the therapeutic efficacy of Dipsaci radix in treating rheumatoid arthritis using a type II collagen (CII)-induced arthritis (CIA) mouse model.

MATERIALS AND METHODS:

Arthritis was induced in male DBA/1 mice by immunization with CII. Dipsaci radix water (DR-W) extract at 50mg/kg and 100mg/kg was orally administered from days to after the induction of arthritis. Arthritic score, serum levels of anti-CII IgG2a, the inflammatory mediator prostaglandin E(2) (PGE(2)), and inflammatory cytokines (TNF-α, IL-1β and IL-6), and histological changes in the ankle joint were analyzed in CIA mice.

RESULTS:

Arthritic induction increased the arthritic score, as well as serum levels of anti-CII IgG2a antibody, PGE(2), TNF-α, IL-1β and IL-6 in mice. However, administration of DR-W extract in CIA mice significantly reduced arthritic scores and serum levels of anti-CII IgG2a antibody, PGE(2), TNF-α, IL-1β and IL-6 compared with those in vehicle-treated CIA mice. Furthermore, histopathological improvement in joint architecture was also observed in DR-W extract-treated CIA mice.

CONCLUSIONS:

DR-W extract has anti-inflammatory and anti-arthritic effects in arthritic mice. This suggests that Dipsaci radix might be used as a therapeutic agent for the treatment of human arthritis.

PMID:
22041103
DOI:
10.1016/j.jep.2011.10.020
[Indexed for MEDLINE]
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