PMID- 34367306 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220425 IS - 1741-427X (Print) IS - 1741-4288 (Electronic) IS - 1741-427X (Linking) VI - 2021 DP - 2021 TI - Novel Compound Q-1 Alleviates Type II Collagen-Induced Arthritis in Rats through the NF-kappaB Pathway. PG - 6627290 LID - 10.1155/2021/6627290 [doi] LID - 6627290 AB - BACKGROUND: Q-1 is a novel compound extracted from the Miao medicine Tiekuaizi. Although Q-1 is known to be a coumarin derivative, its structure has not been deposited in the ACX library. Our previous study showed that Q-1 inhibits the activity of inflammatory cells. This study explores the efficacy of Q-1 in regulating rheumatoid arthritis (RA). The findings show that Q-1 acts through the NF-kappaB signaling pathway. METHODS: The effects of Q-1 were explored using a bovine type II collagen-induced arthritis (CIA) rat model. The CIA rats were intragastrically administered with high (30 mg.kg(-1)) or low (15 mg.kg(-1)) doses of Q-1. The control group was administered with an equal volume of drinking water, while the positive control group was administered with Tripterygium glycoside (9.45 mg.kg(-1)) for 28 consecutive days. The arthritis indices and ankle joint swelling rates were determined. The levels of IL-1beta, IL-6, monocyte chemoattractant protein-1 (MCP-1) in serum and sialic acid (SA) in liver homogenate were determined by enzyme-linked immunosorbent assay (ELISA). The pathological features of the ankle joint were analyzed by hematoxylin and eosin (HE) staining. The IkappaB, P-IkappaB, P65, and P-P65 protein levels in synovial tissue were assayed by western blotting. RESULTS: The arthritis index, ankle joint swelling rate, IL-1beta, IL-6, and MCP-1 levels in serum, SA level in liver tissue, and IkappaB, P-IkappaB, P65, and P-P65 protein levels in synovial tissues were significantly higher (P < 0.01) in the CIA model compared to the control group. RA was successfully replicated by the CIA model, as shown by the joint swelling results and histopathological sections of the ankle. Notably, all the above indicators decreased significantly (P < 0.01) after treatment with Q-1 compared to the model. In addition, animals treated with Q-1 showed lower inflammation in the ankle joints than the model rats. CONCLUSION: The findings indicate that Q-1 effectively inhibited RA in rats by downregulating IkappaB, P-IkappaB, P65, and P-P65, inhibiting the excessive release of inflammatory factors, and inhibiting the overactivation of the NF-kappaB signaling pathway. CI - Copyright (c) 2021 Ting Xu et al. FAU - Xu, Ting AU - Xu T AUID- ORCID: 0000-0002-6797-0672 AD - Guizhou University of Traditional Chinese Medicine, Guiyang, China. AD - Key Laboratory of General Higher Education Institutions in Guizhou Province, Guiyang, China. FAU - Guo, Jia-Chen AU - Guo JC AD - Guizhou University of Traditional Chinese Medicine, Guiyang, China. AD - Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Wu, Sha-Sha AU - Wu SS AD - Guizhou University of Traditional Chinese Medicine, Guiyang, China. AD - Key Laboratory of General Higher Education Institutions in Guizhou Province, Guiyang, China. FAU - Wang, Yan AU - Wang Y AD - Guizhou University of Traditional Chinese Medicine, Guiyang, China. AD - Key Laboratory of General Higher Education Institutions in Guizhou Province, Guiyang, China. FAU - Liu, Xiao-Long AU - Liu XL AD - Guizhou University of Traditional Chinese Medicine, Guiyang, China. AD - Key Laboratory of General Higher Education Institutions in Guizhou Province, Guiyang, China. FAU - Qian, Hai-Bing AU - Qian HB AUID- ORCID: 0000-0001-7687-6218 AD - Guizhou University of Traditional Chinese Medicine, Guiyang, China. AD - Key Laboratory of General Higher Education Institutions in Guizhou Province, Guiyang, China. LA - eng PT - Journal Article DEP - 20210630 PL - United States TA - Evid Based Complement Alternat Med JT - Evidence-based complementary and alternative medicine : eCAM JID - 101215021 PMC - PMC8339345 COIS- The authors declare that they have no conflicts of interest. EDAT- 2021/08/10 06:00 MHDA- 2021/08/10 06:01 PMCR- 2021/06/30 CRDT- 2021/08/09 06:31 PHST- 2020/11/22 00:00 [received] PHST- 2021/05/17 00:00 [revised] PHST- 2021/06/15 00:00 [accepted] PHST- 2021/08/09 06:31 [entrez] PHST- 2021/08/10 06:00 [pubmed] PHST- 2021/08/10 06:01 [medline] PHST- 2021/06/30 00:00 [pmc-release] AID - 10.1155/2021/6627290 [doi] PST - epublish SO - Evid Based Complement Alternat Med. 2021 Jun 30;2021:6627290. doi: 10.1155/2021/6627290. eCollection 2021.