Abstract:
OBJECTIVES:Hyperplasia of synovial fibroblasts, infiltration with lymphocytes and tissue hypoxia are major characteristics of rheumatoid arthritis (RA). Extensive data support a key role for toll-like receptors (TLRs) in RA. Little is known regarding the impact of hypoxia on TLR-induced inflammation in RA. The aim of this study was to reveal the effects of hypoxia and its regulator, hypoxia-inducible factor-1α (HIF-1α), on the inflammatory response of RA synovial fibroblasts (RASF) to TLR ligands. METHODS:Hypoxia was induced in RASF by incubation with Na2S2O4. TLR3 ligand polyIC, TLR2 ligand peptidoglycan, TLR4 ligand LPS and TLR9 ligand CpG were used to stimulate the cells. Effects of hypoxia on TLR-induced inflammatory mediators were determined by RT-PCR, qPCR and ELISA. Overexpression of HIF-1α as well as knocking-down its expression was used to reveal its fundamental role. RASF-induced inflammatory T cell expansion was determined by flow cytometry analysis of T helper (Th)1/Th17 cells, and IFN-γ/IL-17 production by ELISA after RASF/T cell coculture. RESULTS:Hypoxia potentiated the expression of inflammatory cytokines, metalloproteinases and VEGF in RASF stimulated by different TLR ligands, especially polyIC, a synthetic mimic of dsRNA from viruses or apoptotic cells. HIF-1α played a fundamental role in this synergy. Moreover, HIF-1α overexpression enhanced RASF-mediated expansion of inflammatory Th1 and Th17 cells, leading to proinflammatory IFN-γ and IL-17 production. CONCLUSIONS:Our findings suggest that hypoxia and HIF-1α may function in conjunction with TLR-stimulated innate immune responses to drive inflammation in RA. This pathway may serve as a therapeutic target for the disease.
journal_name
Ann Rheum Disjournal_title
Annals of the rheumatic diseasesauthors
Hu F,Mu R,Zhu J,Shi L,Li Y,Liu X,Shao W,Li G,Li M,Su Y,Cohen PL,Qiu X,Li Zdoi
10.1136/annrheumdis-2012-202444subject
Has Abstractpub_date
2014-05-01 00:00:00pages
928-36issue
5eissn
0003-4967issn
1468-2060pii
annrheumdis-2012-202444journal_volume
73pub_type
杂志文章abstract::Polymorphonuclear leucocytes (PMNs), which predominate in inflammatory synovial fluid, can degrade cartilage. This was measured by a novel in vitro model; PMNs were incubated for up to one hour with 2 or 3 microns sections of cartilage and the glycosaminoglycan loss determined by microdensitometry after alcian blue st...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.52.1.27
更新日期:1993-01-01 00:00:00
abstract::HLA types, especially HLA-DR3, are associated with the development of toxic reactions in patients with rheumatoid arthritis after treatment with gold or D-penicillamine. In this study, after treatment with sulphasalazine, leucopenia was observed in three patients, who all had a history of leucopenia after previous gol...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.48.7.539
更新日期:1989-07-01 00:00:00
abstract:OBJECTIVE:To evaluate the efficacy and safety of monotherapy with adalimumab in patients with RA for whom previous DMARD treatment has failed. METHODS:In a 26 week, double blind, placebo controlled, phase III trial, 544 patients with RA were randomised to monotherapy with adalimumab 20 mg every other week, 20 mg weekl...
journal_title:Annals of the rheumatic diseases
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1136/ard.2003.013052
更新日期:2004-05-01 00:00:00
abstract:BACKGROUND:Soluble E-selectin (sE-selectin) is a marker of activation of vascular endothelium. OBJECTIVE:To examine serum levels of sE-selectin in a cohort of 85 patients with early rheumatoid arthritis (RA) followed up for five years. METHODS:sE-selectin levels were assessed annually using an enzyme linked immunosor...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.61.3.242
更新日期:2002-03-01 00:00:00
abstract::We have compared the distribution of histocompatibility antigens of 22 Turkish and 14 British patients with Behçet's disease with those of their respective controls. There was a strong association of B5, specifically its Bw51 split, with the disease. A modest increase in the incidence of HLA B27 was noted in British p...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.39.4.344
更新日期:1980-08-01 00:00:00
abstract::Today, patients' functioning is a central issue in medicine. Concepts, classifications, and measurements of functioning and health, such as the International Classification of Functioning, Disability and Health (ICF) are of prime importance in clinical practice, teaching, and research. This report compares the content...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,评审
doi:10.1136/ard.2004.028233
更新日期:2004-11-01 00:00:00
abstract:OBJECTIVE:To determine the significance of quantitative levels of antibodies to cyclic citrullinated peptides (anti-CCP) in a population of patients with rheumatoid arthritis (RA). METHODS:A total of 241 consecutive sera from patients with RA sent from a large rheumatology clinic for laboratory testing were selected f...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.2007.084509
更新日期:2009-02-01 00:00:00
abstract:BACKGROUND:There is emerging evidence that the development and progression of osteoarthritis (OA) is associated with inflammation. C reactive protein (CRP), a systemic marker for inflammation, may be elevated in OA patients but the evidence is conflicting. OBJECTIVE:To systematically review the literature for the rela...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,meta分析,评审
doi:10.1136/annrheumdis-2013-204494
更新日期:2015-04-01 00:00:00
abstract:OBJECTIVE:Genetic variation at the type II deiodinase (D2) gene (DIO2) was previously identified as osteoarthritis (OA) risk factor. To investigate mechanisms possibly underlying this association, we assessed D2 protein in healthy and OA-affected cartilage and investigated allelic balance of the OA risk polymorphism rs...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/annrheumdis-2011-200981
更新日期:2012-07-01 00:00:00
abstract::The prevalence of anticardiolipin antibodies was evaluated in 70 children with juvenile chronic arthritis (JCA), in 25 adult patients with rheumatoid arthritis, in 42 healthy children and in 40 adult controls. Thirty seven (53%) patients with JCA were positive for IgG or IgM anticardiolipin antibodies, or both, and 30...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.50.9.599
更新日期:1991-09-01 00:00:00
abstract::A patient with Portuguese familial amyloid polyneuropathy who developed haemarthroses secondary to pathological fractures is described. Amyloid material was demonstrated on bone biopsy and confirmed immunohistochemically to be transthyretin (prealbumin). Although amyloid deposits in bone have been described in other t...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.50.11.820
更新日期:1991-11-01 00:00:00
abstract:OBJECTIVE:To assess pooled golimumab safety up to year 3 of rheumatoid arthritis (RA), psoriatic arthritis (PsA) and ankylosing spondylitis (AS) trials. METHODS:Golimumab 50 and 100 mg, administered subcutaneously (SC) every 4 weeks (q4wk), were assessed in patients with active RA (methotrexate-naïve, methotrexate-exp...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1136/annrheumdis-2013-204195
更新日期:2015-03-01 00:00:00
abstract:OBJECTIVES:To report the results of a pilot study using rituximab combined with Peg-interferon (IFN) alpha2b-ribavirin in severe refractory hepatitis C virus (HCV) related mixed cryoglobulinaemia (MC) vasculitis. METHODS:Sixteen consecutive patients with severe HCV-MC vasculitis that were resistant (n = 11) or relapse...
journal_title:Annals of the rheumatic diseases
pub_type: 临床试验,杂志文章
doi:10.1136/ard.2007.081653
更新日期:2008-10-01 00:00:00
abstract:OBJECTIVES:To study the short term effects of a single dose of D2E7, a fully human anti-tumour necrosis factor (TNFalpha) monoclonal antibody (mAb), on the local and systemic homeostasis of interleukin 1beta (IL1beta) and TNFalpha in patients with rheumatoid arthritis (RA). METHODS:All patients with RA enrolled in a p...
journal_title:Annals of the rheumatic diseases
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1136/ard.60.7.660
更新日期:2001-07-01 00:00:00
abstract:OBJECTIVE:An increased proportion of circulating follicular helper T (Tfh) cells was reported in rheumatoid arthritis (RA), but it remains uncertain how Tfh cells affect antibody hyposialylation. We investigated the regulation of autoantibody hyposialylation by Tfh cells in RA using murine model. METHODS:Behaviours of...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/annrheumdis-2019-215195
更新日期:2019-11-01 00:00:00
abstract:OBJECTIVES:To compare the effect of a single infusion of zoledronic acid (ZA) with placebo on knee pain and bone marrow lesions (BMLs). METHODS:Adults aged 50-80 years (n=59) with clinical knee osteoarthritis and knee BMLs were randomised to receive either ZA (5 mg/100 ml) or placebo. BMLs were determined using proton...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,随机对照试验
doi:10.1136/annrheumdis-2011-200970
更新日期:2012-08-01 00:00:00
abstract::The modulation of interleukin 1 (IL-1) effects on proteoglycan metabolism in intact murine patellar cartilage by transforming growth factor beta (TGF-beta) was investigated in vitro and in vivo. In vitro TGF-beta (400 pmol/l) had no effect on basal proteoglycan degradation. Proteoglycan degradation induced by IL-1, ho...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.52.3.185
更新日期:1993-03-01 00:00:00
abstract:OBJECTIVE:To determine the incremental cost-effectiveness ratios (ICERs) of two therapeutic regimens of infliximab for ankylosing spondylitis (AS). METHODS:230 patients with active AS who were participating in a randomised controlled trial comparing two infliximab infusion modalities-every 6 weeks (Q6) and on demand (...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1136/ard.2008.103887
更新日期:2010-02-01 00:00:00
abstract::A previous report that C3 activation products are demonstrable in the plasma of subjects with rheumatoid arthritis was reinvestigated using 2-dimensional immunoelectrophoresis. Initially it seemed that results were in agreement, but the occurrence of similar patterns in normal sera and poor reproducibility of results ...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.37.1.18
更新日期:1978-02-01 00:00:00
abstract::Two patients are described with severe and progressive rheumatoid arthritis in whom methotrexate was reintroduced despite previous methotrexate related pneumonitis. In both patients a marked improvement in disease control occurred without a recurrence of the pneumonitis. ...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.51.2.272
更新日期:1992-02-01 00:00:00
abstract:OBJECTIVES:To evaluate the rate of tuberculosis (TB) in biologic users for rheumatic diseases in South Africa, the effectiveness of our latent TB infection (LTBI) programme, risk factors and outcome. METHODS:TB cases were collected from the South African Biologics Registry (SABIO), rheumatologists and pharmaceutical c...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/annrheumdis-2019-216128
更新日期:2020-02-01 00:00:00
abstract:OBJECTIVE:Regulatory T cells (Tregs) with the plasticity of producing proinflammatory cytokine IL-17 have been demonstrated under normal and pathogenic conditions. However, it remains unclear whether IL-17-producing Tregs lose their suppressive functions because of their plasticity toward Th17 in autoimmunity. The aim ...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/annrheumdis-2013-204228
更新日期:2015-06-01 00:00:00
abstract:OBJECTIVE:In the present work, the frequency of inherited polymorphisms of the beta2 adrenergic receptor (beta2AR) gene and their association with rheumatoid arthritis (RA) as well as human leukocyte antigen (HLA)-DRB1 alleles was examined. METHODS:An allele-specific polymerase chain reaction was used to determine the...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.2007.083782
更新日期:2008-12-01 00:00:00
abstract:BACKGROUND/OBJECTIVES:To maintain and optimise the quality of care provided by health professionals in rheumatology (HPRs), adequate educational offerings are needed. This task force (TF) aimed to develop evidence-based recommendations for the generic core competences of HPRs, with specific reference to nurses, physica...
journal_title:Annals of the rheumatic diseases
pub_type: 共识发展会议,指南,杂志文章
doi:10.1136/annrheumdis-2019-215803
更新日期:2020-01-01 00:00:00
abstract:OBJECTIVE:To assess and characterise the risk of bladder cancer, and its relation to cyclophosphamide, in patients with Wegener's granulomatosis. METHODS:In the population based, nationwide Swedish Inpatient Register a cohort of 1065 patients with Wegener's granulomatosis, 1969-95, was identified. Through linkage with...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,评审
doi:10.1136/ard.2003.019125
更新日期:2004-10-01 00:00:00
abstract:OBJECTIVE:FoxO3a is a transcriptional factor implicated in cell cycle regulation and apoptosis. Since rheumatoid arthritis (RA) is associated with apoptosis defects, the expression level, regulation and phosphorylation status of FoxO3a was investigated in blood and synovium from patients with RA. METHODS:In microarray...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.2009.109991
更新日期:2010-04-01 00:00:00
abstract::Juvenile idiopathic arthritis (JIA) is not a disease, but an exclusion diagnosis that encompasses all forms of arthritis that begin before the age of 16 years, persist for more than 6 weeks, and are of unknown origin. This heterogeneous group of chronic arthritides has been classified on clinical and laboratory ground...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/annrheumdis-2012-201388
更新日期:2012-09-01 00:00:00
abstract::Premature death has been long recognised as a manifestation of rheumatoid arthritis (RA). Three lines of evidence can explain why patients with RA die prematurely and why the mortality gap between patients with RA and the general population appears to widening. First, patients with RA have a higher risk of several ser...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,评审
doi:10.1136/ard.2008.098038
更新日期:2008-12-01 00:00:00
abstract::A 49 year old white woman with systemic lupus erythematosus and bronchiolitis obliterans was treated with prednisone (1 mg/kg daily), which led to a transitory improvement in pulmonary status. Cyclophosphamide was then added--4 mg/kg daily intravenously for five days, then 2 mg/kg daily orally--and this was followed b...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.50.12.956
更新日期:1991-12-01 00:00:00
abstract:OBJECTIVE:To determine the relationship of disease activity to infections in patients with rheumatoid arthritis (RA). METHODS:From the CORRONA database, the incidence of physician-reported infections in RA patients on stable disease-modifying antirheumatic drug, biological, and corticosteroid therapy for at least 6 mo...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,多中心研究
doi:10.1136/ard.2010.128637
更新日期:2011-05-01 00:00:00