Effect of Sanbi Granules on TLR4/MAPKs/NF-κB Signal Pathway in Type Ⅱ Collagen Induced Arthritis Rats
- VernacularTitle: 基于TLR4/MAPKs/NF-κB炎症信号通路探讨三痹颗粒对Ⅱ型胶原性关节炎大鼠的治疗作用及机制研究
- Author:
Chun-Fang ZHANG
1
Author Information
- Publication Type:Journal Article
- Keywords: CIA rat model; Inflammatory factor; Rheumatoid arthritis; Sanbi granule; TLR4/MAPKs/NF-κB signal pathway
- From: Chinese Pharmaceutical Journal 2020;55(7):519-526
- CountryChina
- Language:Chinese
- Abstract: OBJECTIVE: To discuss the effect of Sanbi granules on type Ⅱ collagen induced arthritis (CIA) rats by regulating the TLR4/MAPKs/NF-κB signal pathway. METHODS: Sixty of Wistar rats were randomly divided into normal control group (CTL group, n=10), model group (n=10), positive control group (n=10) and low dose of Sanbi group (n=10), middle dose of Sanbi group (n=10), high dose of Sanbi group (n=10). The collagen induced arthritis (CIA) model of rats was adopted and treated for 20 days by intragastric administration from 2 weeks after primary immune. After exposure to sanbi for 35 d, the rats status, paw swelling, arthritis index (AI) and pathological change of synovial tissue were observed. The serum IL-1β, IL-6, tumor necrosis factor α (TNF-α) levels were detected by ELISA. And the expressions of Toll-like receptor 4 (TLR4), nuclear factor κB (NF-κB) (p65), p-NF-κB (p65), p38, p-p38, extracellular signal-regulated kinase 1/2 (ERK1/2), p-ERK1/2, c-Jun NH2-terminal kinase (JNK), p-JNK mRNA or proteins in synovial tissues were detected by qRT-PCR and Western blot. RESULTS: At the end of experiment, compared with model group, the paw swelling degree and arthritis index (AI) of CIA rats in DXM group and low, middle, high dose of Sanbi groups were lower (P<0.05). Synovial tissue inflammatory of rats in high dose of Sanbi group changed obviously by H&E staining. The serum IL-1β, IL-6, TNF-α of CIA rats in DXM group and low, middle, high dose of Sanbi groups were lower than those in model group (P<0.05). And there was no difference of the serum IL-1β, IL-6, TNF-α between DXM group and high dose of Sanbi group (P>0.05). Besides, compared with CTL group, TLR4, p-NF-κB (p65), p-p38, p-ERK1/2, p-JNK mRNA and proteins in synovial tissues of CIA rats in model group, DXM group and low, middle, high dose of Sanbi groups were higher (P<0.05). And these mRNAs and proteins in DXM group and low, middle, high dose of Sanbi groups were lower than these in model group, particularly in DXM group and high dose of Sanbi group (P<0.05). CONCLUSION: There are significant evidences that Sanbi granules could protect joint synovial tissues injury by down-regulation TLR4/MAPKs/NF-κB signal pathway on CIA rats.
