Tectoridin exhibits anti-rheumatoid arthritis activity through the inhibition of the inflammatory response and the MAPK pathway in vivo and in vitro.

Abstract

Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by inflammation infiltration of the synovial tissues and the fibroblast-like synoviocytes. Tectoridin is a botanical active ingredient with anti-inflammatory properties. In this study, the anti-arthritic effects of tectoridin and its mechanism of action are examined in TNF-α-induced human fibroblast-like synovial cells (HFLSs cells) and complete Freund's adjuvant (CFA)-stimulated arthritic mice. Arthritis progression was evaluated via bodyweight, hind paw swelling, organ index, and synovial pathology. IL-1β, IL-6 and other pro-inflammatory factors concentrations, and the expression of MAPK pathway proteins in HFLSs cells and arthritic mice were measured using ELISA and western blotting. Results showed that tectoridin significantly decreased the swelling of the paws and joints as well as the increased immune organ index within CFA-induced arthritic mice. Histopathological analysis showed that tectoridin alleviated the lesions of ankle joints and synovial tissues induced by CFA. Secretion of pro-inflammatory cytokines in TNF-α-induced HFLSs cells and CFA-stimulated arthritic mice were also abated by tectoridin. Similarly, the presence of tectoridin significantly inhibited the abnormal phosphorylation levels of ERK, JNK, and p38 in vivo and in vitro. All those results highlighted that tectoridin exhibits anti-arthritis effects by inhibiting MAPK-mediated inflammatory responses.

• Authors: Qiuxia Huang, Xin Xiao, Jinjin Yu, Yajie Yang, Jiabao Yu, Yang Liu, Huixin Song, Tengfei Han, Dezhu Zhang, Xiaofeng Niu, Weifeng Li
• Journal: Archives of biochemistry and biophysics (Arch Biochem Biophys) Vol. 727 Pg. 109328 (09 30 2022) ISSN: 1096-0384 [Electronic] United States
• PMID: 35750096 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2022 Elsevier Inc. All rights reserved.

Chemical References

• Cytokines
• Isoflavones
• Tumor Necrosis Factor-alpha
• Freund's Adjuvant
• tectoridin

Topics

• Animals
• Arthritis, Experimental (chemically induced, drug therapy)
• Arthritis, Rheumatoid (drug therapy)
• Cytokines (metabolism)
• Edema (chemically induced, drug therapy, pathology)
• Freund's Adjuvant (adverse effects)
• Humans
• Isoflavones
• Mice
• Tumor Necrosis Factor-alpha (adverse effects)