OBJECTIVES To explore the source of the p19 subunit of interleukin-23 (IL-23) in joints with rheumatoid arthritis (RA), the effects of IL-1beta and tumour necrosis factor (TNF)-alpha on IL-23 gene expression in RA fibroblast-like synoviocytes and the effect of IL-23 on proinflammatory cytokines. METHODS Expression of IL-23 p19 in joints was examined by immunohistochemical analysis of patients...

Rheumatoid arthritis (RA) development is strongly associated with cigarette smoke exposure, which activates the aryl hydrocarbon receptor (AhR) as a trigger for Th17 inflammatory pathways. We previously demonstrated that exposure to hydroquinone (HQ), one of major compounds tar, aggravates symptomatology in rats. However, mechanisms related HQ-related RA still remain elusive. Cell viability, cy...

Background: Osteoarthritis (OA) is a progressive, age-associated disease that is characterized with cartilage destruction, subchondral bone remodeling and inflammation of the synovial membrane. Considering the complications of common treatments of OA, including non-steroidal anti-inflammatory drug (NSAIDs) and corticosteroids, investigating new treatments for this disorder is crucial. Recently,...

As a kind of chronic inflammatory diseases, Rheumatoid arthritis (RA) has low cure rate and easy recurrence. It widely reported that abnormal activation mitogen-activated protein kinase (MAPK) nuclear factor kappa-B (NF-κB) signaling pathways are associated with the development RA inflammation. Blocking rheumatoid fibroblast-like synoviocytes (RA-FLS) can delay RA. Ononin is natural isoflavone ...

BACKGROUND Lubricin/proteoglycan 4 (PRG4) is a mucinous glycoprotein secreted by synovial fibroblasts and superficial zone chondrocytes. Recently, we showed that recombinant human PRG4 (rhPRG4) is a putative ligand for CD44 receptor. rhPRG4-CD44 interaction inhibits cytokine-induced rheumatoid arthritis synoviocyte proliferation. The objective of this study is to decipher the autocrine function...

Isochlorogenic acid C (ICAC) is found in a variety of natural foods and medicinal plant materials. This study aims to validate the biological activity isochlorogenic limiting inflammation by Erk/JNK/NF-κB pathway. In this study, TNF-α-induced human fibroblast-like synoviocytes collagen-induced arthritis animal models were used perceive potential anti-inflammation mechanism ICAC. The role was ev...

Objective(s): To elucidate the effects and potential mechanisms of hypericin-photodynamic therapy (HYP-PDT) for treating the human rheumatoid arthritis (RA) fibroblast-like synoviocyte (FLS) MH7A cell-line. Materials and Methods: MH7A cells were subjected to HYP-PDT intervention and apoptosis was evaluated via MTT, nuclear staining, and flowcytometry analyses. Intracellular reactive oxygen spec...

To evaluate the effect of exosomes secreted by berberine-treated bone marrow-derived mesenchymal stem cells (BMSCs) on synovial inflammation in collagen-induced arthritis (CIA) model. Exosomes were isolated from BMSCs (Ber-BMSC-EXs) and untreated (BMSC-EXs). CIA rats developed treated with Ber-BMSC-EXs or BMSC-EXs. Clinical index was measured, activation fibroblast-like synoviocytes (FLSs) eval...