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Condition: Rheumatoid Arthritis

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Total 292 results found since Jan 2013.

TonEBP Suppresses the HO-1 Gene by Blocking Recruitment of Nrf2 to Its Promoter
Discussion Dynamic changes in the functional phenotype of macrophages are associated with pathogenesis of inflammatory diseases (5–7). TonEBP primes macrophages toward an M1 phenotype, which has pro-inflammatory properties. TonEBP does this by promoting expression of pro-inflammatory genes via interaction with NF-κB (36) and by binding directly to the promoter (37, 64). In addition, TonEBP suppresses expression of the anti-inflammatory cytokine IL-10 by limiting chromatin access to the promoter (37). The pro-inflammatory function of TonEBP suggests that inhibiting its expression or activation could suppres...
Source: Frontiers in Immunology - April 17, 2019 Category: Allergy & Immunology Source Type: research

Increasing Upstream Chromatin Long –Range Interactions May Favor Induction of Circular RNAs in LysoPC-Activated Human Aortic Endothelial Cells
We examined the sponging potential of all significantly changed circRNAs using the CircInteractome database (Montefiori et al., 2018), recording two miRNAs with four or more predicted binding sites in a single circRNA transcript, a threshold above which meaningful sponging activity is likely to occur Memczak et al. (2013). Another four significantly changed circRNAs are experimentally shown to sponge miRNAs (Dudekula et al., 2016; Chen et al., 2017; Yan et al., 2017; Wang et al., 2018), for six total circRNAs with miRNA sponging activity including miR125, miR143, miR1272, miR153, miR515-5p, and miR196a-5p (Table 4). In Fig...
Source: Frontiers in Physiology - April 17, 2019 Category: Physiology Source Type: research

Genetic Regulation of Liver Metabolites and Transcripts Linking to Biochemical-Clinical Parameters
Conclusion In summary, this study is the first to combine metabolomics, transcriptomics, and genome-wide association studies in a porcine model. Our results improve understanding of the genetic regulation of metabolites which link to transcripts and finally biochemical-clinical parameters. Further, high-performance profiling of metabolites as intermediate phenotypes is a potentially powerful approach to uncover how genetic variation affects metabolic and health status. Our results advance knowledge in areas of biomedical and agricultural interest and identify potential correlates of biomarkers, SNPs-metabolites, SNPs-tran...
Source: Frontiers in Genetics - April 16, 2019 Category: Genetics & Stem Cells Source Type: research

Oligomeric S100A4 Is Associated With Monocyte Innate Immune Memory and Bypass of Tolerance to Subsequent Stimulation With Lipopolysaccharides
Conclusion: Bypass of tolerance by DAMPs might be a phenomenon as important as TI, since it could explain how chronic inflammation can be maintained in spite of an environment with multiple TLR2/TLR4-ligands. In RA monocytes, a PRDM8-dependent TI mechanism could be responsible for sustained chemokine/cytokines levels. Introduction Monocytes and macrophages play a central role in the pathophysiology of inflammation. For instance, in rheumatoid arthritis (RA), activated monocytes massively infiltrate synovial tissues and produce tumor necrosis factor-α (TNFα) (1–3). Accordingly, therapies aime...
Source: Frontiers in Immunology - April 14, 2019 Category: Allergy & Immunology Source Type: research

Plant-Derived Alkaloids: The Promising Disease-Modifying Agents for Inflammatory Bowel Disease
Conclusion This paper summarizes the current findings regarding the anti-colitis activity of plant-derived alkaloids and shows how these alkaloids exhibit significant and beneficial effects in alleviating colonic inflammation. These natural alkaloids are not only promising agents for IBD treatment but are also components for developing new wonder drugs. However, the underlying molecular mechanisms or toxicological evaluation of most plant-derived alkaloids still require much scientific research, and their actual efficacies for IBD patients have not been verified well in field research. Thus, further clinical trials to elu...
Source: Frontiers in Pharmacology - April 11, 2019 Category: Drugs & Pharmacology Source Type: research

Role of cannabinoid receptor 2 in mediating interleukin-1 β-induced inflammation in rheumatoid arthritis synovial fibroblasts.
CONCLUSIONS: Overall, our results indicate for the first time that CB2 mediates IL-1β-induced signalling pathways in RASFs and may serve as a potential target to manage pain and inflammation in RA. PMID: 30943136 [PubMed - as supplied by publisher]
Source: Clinical and Experimental Rheumatology - April 5, 2019 Category: Rheumatology Tags: Clin Exp Rheumatol Source Type: research

Pro-fibrotic effects of IL-17A and elevated IL-17RA in IPF and RA-ILD support a direct role for IL-17A/IL-17RA in human fibrotic interstitial lung disease.
Abstract Interleukin-17 (IL-17) is a T helper 17 (Th17) cytokine implicated in the pathogenesis of many autoimmune diseases, including rheumatoid arthritis (RA). Although IL-17A has a well-established role in murine pulmonary fibrosis models, it's role in the tissue remodeling and fibrosis occurring in idiopathic pulmonary fibrosis (IPF) and RA associated interstitial lung disease (RA-ILD) is not very well defined. To address this question, we utilized complimentary studies to determine responsiveness of human normal and pathogenic lung fibroblasts to IL-17A and used lung biopsies acquired from patients with idiop...
Source: Am J Physiol Lung Ce... - January 3, 2019 Category: Respiratory Medicine Authors: Zhang J, Wang D, Wang L, Wang S, Roden AC, Zhao H, Li X, Prakash YS, Matteson EL, Tschumperlin DJ, Vassallo R Tags: Am J Physiol Lung Cell Mol Physiol Source Type: research

Role of Small Ubiquitin-like Modifier Proteins-1 (SUMO-1) in Regulating Migration and Invasion of Fibroblast-like Synoviocytes from Patients with Rheumatoid Arthritis.
Abstract Rheumatoid arthritis (RA) is featured by erosive cartilage and bone destruction. The enhancing aggressive property of fibroblast-like synoviocytes (FLSs) plays a critical role in this process. Small ubiquitin-like modifier (SUMO) proteins, including SUMO-1, SUMO-2, SUMO-3 and SUMO-4, participate in regulating many cellular events such as survival, migration and signal transduction in some cell lines. However, their roles in the pathogenesis of RA are not well established. Therefore, we evaluated the role of SUMO proteins in RA FLSs migration and invasion. We found that expression of both SUMO-1 and SUMO-2...
Source: Experimental Cell Research - December 15, 2018 Category: Cytology Authors: Lao M, Zhan Z, Li N, Xu S, Shi M, Zou Y, Huang M, Zeng S, Liang L, Xu H Tags: Exp Cell Res Source Type: research

MiR-92a inhibits fibroblast-like synoviocyte proliferation and migration in rheumatoid arthritis by targeting AKT2.
This study was aimed to investigate the effects of miR-92a on the proliferation and migration of rheumatoid arthritis fibroblast-like synoviocytes (RA-FLSs). Our results showed that miR-92a was significantly down-regulated in RA synovial tissue and RA-FLSs, whereas the protein level of AKT2 is increased. Restoration of miR-92a suppressed the proliferation and migration of RA-FLSs. Down-regulation of miR-92a promotes proliferation and migration of normal human FLSs. Dual luciferase reporter gene assay showed that miR-92a could specifically bind with the 30UTR of AKT2 and significantly repressed the luciferase activity. Down...
Source: Journal of Biosciences - December 1, 2018 Category: Biomedical Science Authors: Yu FY, Xie CQ, Jiang CL, Sun JT, Feng HC, Li C, Huang XW Tags: J Biosci Source Type: research

Reciprocal regulation of pro-inflammatory Annexin A2 and anti-inflammatory Annexin A1 in the pathogenesis of rheumatoid arthritis.
Abstract Annexin A2 has been implicated in several immune modulated diseases including Rheumatoid arthritis (RA) pannus formation. The most relied treatment option for RA pathogenesis is glucocorticoids. Glucocorticoids regulate the synthesis, phosphorylation and cellular deposition of Annexin A1. This annexin mediates the anti-inflammatory actions of glucocorticoids. These two first characterized members of annexin superfamily proteins acts reciprocally, one as an anti-inflammatory and the other proinflammatory in nature. The possibility of these molecules as soluble biomarkers and as an upstream regulator of maj...
Source: Molecular Biology Reports - November 13, 2018 Category: Molecular Biology Authors: Haridas V, Shetty P, Sarathkumar E, Bargale A, Vishwanatha JK, Patil V, Dinesh US Tags: Mol Biol Rep Source Type: research

Novel nano therapeutic materials for the effective treatment of rheumatoid arthritis-recent insights
Publication date: December 2018Source: Materials Today Communications, Volume 17Author(s): Kumar Janakiraman, Venkateshwaran Krishnaswami, Vijaya Rajendran, Subramanian Natesan, Ruckmani KandasamyAbstractRheumatoid arthritis (RA) is the most common complex multifactorial joint related autoimmune inflammatory disease with unknown etiology accomplished with increased cardiovascular risks. RA is characterized by the clinical findings of synovial inflammation, autoantibody production, and cartilage/bone destruction, cardiovascular, pulmonary and skeletal disorders. Pro-inflammatory cytokines such as IL-1, IL-6, IL-8, and IL-10...
Source: Materials Today Communications - October 4, 2018 Category: Materials Science Source Type: research

Sam68 Promotes Invasion, Migration, and Proliferation of Fibroblast-like Synoviocytes by Enhancing the NF- κB/P65 Pathway in Rheumatoid Arthritis
In this study, we analyzed the effect and possible mechanisms of Sam68 in rheumatoid arthritis (RA). By western blot analysis and immunohistochemistry, we found that the expression of Sam68 in synovial tissue of RA patients was increased compared with the cont rol group. Immunoflourescent staining demonstrated that Sam68 co-localized with fibroblast-like synoviocytes (FLS) of RA patients. Additionally, the expression of Sam68 in FLS was increased by tumor necrosis factor (TNF)-α stimulation, in a time-dependent manner. Upon TNF-α treatment, Sam68 transl ocated from the cytoplasm to the nucleus where it interacted with th...
Source: Inflammation - October 1, 2018 Category: Allergy & Immunology Source Type: research

Novel Nano therapeutic materials for the effective treatment of Rheumatoid Arthritis- recent insights
Publication date: Available online 15 September 2018Source: Materials Today CommunicationsAuthor(s): Kumar Janakiraman, Venkateshwaran Krishnaswami, Vijaya Rajendran, Subramanian Natesan, Ruckmani KandasamyAbstractRheumatoid arthritis (RA) is the most common complex multifactorial joint related autoimmune inflammatory disease with unknown etiology accomplished with increased cardiovascular risks. RA is characterized by the clinical findings of synovial inflammation, autoantibody production, and cartilage/bone destruction, cardiovascular, pulmonary and skeletal disorders. Pro-inflammatory cytokines such as IL-1, IL-6, IL-8,...
Source: Materials Today Communications - September 15, 2018 Category: Materials Science Source Type: research

An enhanced RRM2 siRNA delivery to rheumatoid arthritis fibroblast-like synoviocytes through a liposome ‑protamine-DNA-siRNA complex with cell permeable peptides.
An enhanced RRM2 siRNA delivery to rheumatoid arthritis fibroblast-like synoviocytes through a liposome‑protamine-DNA-siRNA complex with cell permeable peptides. Int J Mol Med. 2018 Aug 08;: Authors: Wang X, Wang X, Sun J, Fu S Abstract Rheumatoid arthritis (RA) is considered to be a systemic autoimmune disease that induces systemic complications and progressive disability. It affects a large number of people. RA fibroblast‑like synoviocytes (RA‑FLS) promote the progression of RA through the secretion of proinflammatory cytokines and increasing invasiveness into the extracellular matrix. Therefo...
Source: International Journal of Molecular Medicine - August 8, 2018 Category: Molecular Biology Authors: Wang X, Wang X, Sun J, Fu S Tags: Int J Mol Med Source Type: research

Inhibition of C5a prevents IL-1β-induced alternations in rat synoviocytes in vitro
Publication date: Available online 6 August 2018Source: Molecular and Cellular ProbesAuthor(s): Wei Lu, Lin Wang, Jing Yao, Wen Wang, Yu ChenAbstractC5a is an important pro-inflammatory peptide involved in complement activation, membrane attack complex formation, immune cell chemotaxis, and allergic responses. Osteoarthritis is a disease characterized by degenerative changes in articular cartilage. It has recently been found that inflammatory responses play an important role in the pathogenesis of osteoarthritis and also in rheumatoid arthritis, where dysfunctional synoviocytes are involved. We performed a series of studie...
Source: Molecular and Cellular Probes - August 6, 2018 Category: Molecular Biology Source Type: research