Anti-arthritic effects of clematichinenoside (AR-6) on PI3K/Akt signaling pathway and TNF-α associated with collagen-induced arthritis.
Pharm Biol
; 51(1): 13-22, 2013 Jan.
Article
en En
| MEDLINE
| ID: mdl-22994412
ABSTRACT
CONTEXT Clematichinenoside (AR-6) is a triterpene saponin from an anti-arthritic herbal formula Wei-Ling-Xian in Chinese, which is an herbal medicine derived from the dried root and rhizome of Clematis chinensis Osbeck, C. hexapetala Pall., or C. manshurica Rupr. (Ranunculaceae). OBJECTIVE:
To investigate the modulating effect and explored the potential mechanism of AR-6 in rheumatoid arthritis (RA), using collagen-induced arthritis (CIA) in a rat model. MATERIALS ANDMETHODS:
CIA was evaluated by measuring body weight, paw swelling and organ index. Expression of TNF-α, PI3K and p-Akt in synovium tissue was measured by immunohistochemistry. Furthermore, expression of TNF-α mRNA, PI3K mRNA and p-Akt mRNA was measured with RT-PCR.RESULTS:
The intragastric administration of AR-6 (32, 16 and 8 mg/kg), especially the high dose level of 32 mg/kg, significantly suppressed the swelling of hind paws of CIA rats (p < 0.01) and inhibited their body weight loss (p < 0.01). Based on histopathological observation, all AR-6 groups showed great amelioration compared with model group. Moreover, AR-6 significantly reduced the production of TNF-α, PI3K and p-Akt expression by immunohistochemistry (p < 0.01), and decreased TNF-α mRNA, PI3K mRNA and p-Akt mRNA in CIA rat synovium (p < 0.01).DISCUSSION:
Our study indicates the mechanism of AR-6 is associated with PI3K/Akt signaling pathway and TNF-α.CONCLUSIONS:
Such characteristics relating to AR-6 curing chronic inflammation of CIA, may be effectively applied to the therapeutic potential in patients with inactive RA.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Artritis Experimental
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Artritis Reumatoide
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Saponinas
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Antirreumáticos
Tipo de estudio:
Prognostic_studies
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Risk_factors_studies
Límite:
Animals
Idioma:
En
Año:
2013
Tipo del documento:
Article