Current animal models of arthritis only partially reflect the complexity of rheumatoid arthritis and typically lack either chronicity or autoantibody formation. Here we describe a model that combines features of antigen-induced arthritis and collagen-induced arthritis, which can be efficiently induced in BALB/c and C57BL/6 mice. However, BALB/c mice generate significantly higher titres of antic...

INTRODUCTION Toll-like receptor (TLR)4 promotes joint inflammation in mice. Despite that several studies report a functional link between TLR4 and interleukin-(IL-)1β in arthritis, TLR4-mediated regulation of the complicated cytokine network in arthritis is poorly understood. To address this, we investigated the mechanisms by which TLR4 regulates the cytokine network in antibody-induced arthrit...

background and objectives rheumatoid arthritis (ra) is a chronic inflammatory disease which is characterized by joint swelling, and synovial inflammation. c reactive protein (crp) and ceruloplasmin (cp) are identified as important biomarkers of ra and various inflammatory diseases. curcumin, a widely used yellow color spice is the most active component of curcuma longa l (turmeric). curcumin co...

introduction: the systemic and local content of inflammatory cytokines and chemokines play substantial roles in pathophysiology of arthritis. this study was purposed to verify the roles of synovial tnf-α, il-6 and fractalkine (fkn) in edema changes during different stages of complete freund’s adjuvant (cfa)-induced knee arthritis in rats. methods: 168 male wistar rats were divided in 7 groups a...

Amongst extraintestinal manifestations (EIM) occurring in IBD patients, rheumatologic manifestations are the most frequent. Understanding the relationships between arthritis and colitis is a prerequisite to improving the management of these patients. Microbiota of patients with IBD or rheumatologic diseases, like spondyloarthritis (SpA) is modified compared to healthy individual. Thus, we have ...

INTRODUCTION Inflammatory joint diseases such as rheumatoid arthritis are associated with local bone erosions and systemic bone loss, mediated by increased osteoclastic activity. The receptor activator of nuclear factor (NF) κB ligand (RANKL) plays a key role in mediating inflammation-induced bone loss, whereas tumour necrosis factor (TNF) plays a central role in the inflammatory process. Here ...

OBJECTIVES Esculetin (6,7-dihydroxycoumarin) is a natural coumarin with anti-oxidant, anti-inflammatory and anti-nociceptive activity. It acts as a potent inhibitor of lipoxygenases (5-LOX and 12-LOX) and decreases the production of matrix metalloproteinases (MMP-1, MMP-3 and MMP-9). Because both inhibition of lipoxygenases and inhibition of matrix metalloproteinases are effective strategies in...

introduction: stimulation of peptidergic fibers activates microglia in the dorsal horn. microglia activation causes fractalkine (fkn) release, a neuron-glia signal, which enhances pain. the transient vanilloid receptor 1 (trpv1) mediates the release of neuropeptides, which can subsequently activate glia. trpv1 and trpv2 are generally expressed on c and aδ fibers, respectively. expression of bot...

Arthritis can be induced in rats by intradermal injection of oil containing bacterial derivatives (adjuvant-induced arthritis) or cartilage collagen (type II collagen-induced arthritis). It was of interest, therefore, to determine whether collagen functions as an autoantigen in rats with adjuvant arthritis. Blood mononuclear cells from the majority of rats with adjuvant arthritis exhibited enha...