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Article Publish Status: FREE
Abstract Title:

Protective Effects of Sinomenine on CFA-Induced Inflammatory Pain in Rats.

Abstract Source:

Med Sci Monit. 2018 Apr 5 ;24:2018-2024. Epub 2018 Apr 5. PMID: 29620048

Abstract Author(s):

Yan Yuan, Yongjun Zhang, Xiaofeng He, Shengdeng Fan

Article Affiliation:

Yan Yuan

Abstract:

BACKGROUND The purpose of this study was to investigate the effects of sinomenine (SIN) on CFA-induced inflammatory pain in rats, and to explore the underlying molecular mechanisms. MATERIAL AND METHODS To determine the potential influences of SIN in the pathogenesis of inflammatory pain, an inflammatory pain (IP) mouse model was established and rats were treated with SIN (30 mg/kg). Behavioral tests were used to assess the MWT and TWL of the rats. ELISA assay was used to detect the level of inflammation cytokines. Western blotting and qRT-PCR were carried out to measure the related protein and mRNA expression level, respectively. RESULTS We found that the MWT and TWL of the CFA-treated rats were markedly lower than that of the control rats, and they were significantly increased by SIN administration. The results suggest that IP rats had higher levels of TNF-α, IL-1β and IL-6 compared with the control rats. SIN administration decreased the levels of TNF-α, IL-1β, and IL-6. In addition, we found that p-p65 and p-p38 expression notably decreased after SIN treatment in IP rats. Moreover, the results showed that SIN inhibited Cox-2 and PGE2 expression in IP rats. CONCLUSIONS The data indicate that SIN had a protective role in inflammatory pain through repressing inflammatory mediators via preventing the p38MAPK-NF-κB pathway.

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