Abstract:
:Articular cartilage is avascular. Nutrients are transported to the cells mainly by diffusion from the synovial fluid. Nutrient transport is also sometimes thought to be assisted by movement of fluid in and out of cartilage in response to cyclic loading of the tissue ('pumping'). The influence of pumping on transport of solutes through cartilage was measured by subjecting plugs of human femoral head cartilage immersed in medium containing radioactive solutes to a simulated walking cycle of 2.8 MPa at 1 Hz. The rate of absorption or desorption of tracers from the cycled plugs was compared with that of unloaded control plugs. For small solutes (urea, NaI) fluid transport did not affect the rate of solute transport significantly. Most major nutrients, such as glucose and oxygen, are small solutes and thus nutrition should not be affected by pumping. The rate of desorption of a large solute (serum albumin), however, was increased by 30-100% in plugs subjected to cyclic loading.
journal_name
Ann Rheum Disjournal_title
Annals of the rheumatic diseasesauthors
O'Hara BP,Urban JP,Maroudas Adoi
10.1136/ard.49.7.536subject
Has Abstractpub_date
1990-07-01 00:00:00pages
536-9issue
7eissn
0003-4967issn
1468-2060journal_volume
49pub_type
杂志文章abstract:OBJECTIVE:To analyse matrix metalloproteinases (MMPs) and tissue inhibitor-1 of MMPs (TIMP-1) levels in the systemic circulation and synovial fluid (SF) of patients with RA and to compare these levels with inflammatory and collagen degradation markers. METHODS:ProMMP-1, -2, -3, -8, -9, TIMP-1, levels of MMP/alpha(2)-m...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.2003.013243
更新日期:2004-07-01 00:00:00
abstract:PURPOSE:To assess risk of cartilage loss in the tibiofemoral joint in relation to baseline damage severity, and to analyse the association of nearby pathologic findings on the risk of subsequent cartilage loss. METHODS:The Multicenter Osteoarthritis Study is a longitudinal study of individuals with or at high risk for...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,多中心研究
doi:10.1136/annrheumdis-2012-201810
更新日期:2013-06-01 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 study the value of antibodies to citrullinated proteins/peptides for predicting joint outcomes in patients with recent onset rheumatoid arthritis (RA). METHODS:191 patients with RA onset within the past year were followed up prospectively for five years. Serum samples obtained from 145 patients at baselin...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.62.2.120
更新日期:2003-02-01 00:00:00
abstract:OBJECTIVE:To evaluate the ability of ultrasound (US) to detect the presence and change of Achilles erosions in spondyloarthritis (SpA). METHODS:A blind prospective two-dimensional (2D) and three-dimensional (3D) US study of Achilles enthesis erosions in early SpA was undertaken. US examinations were performed at basel...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/annrheumdis-2011-200352
更新日期:2011-11-01 00:00:00
abstract:OBJECTIVE:To assess the usefulness of high resolution computed tomography (HRCT) of the lungs in patients with rheumatoid arthritis (RA) with and without respiratory symptoms. PATIENTS AND METHODS:Eighty eight RA patients with a mean duration of disease 12 (SD 8) years were evaluated. Eleven patients were excluded bec...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.54.10.815
更新日期:1995-10-01 00:00:00
abstract::Volatile short-chain fatty acids (SCFA) in synovial fluid from 80 patients were quantified by gas-liquid chromatography (GLC). Characteristic patterns of volatile SCFA could not be associated with septic, nonseptic inflammatory, or noninflammatory groups. Mean concentrations of pentanoic and hexanoic acids were simila...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.42.4.362
更新日期:1983-08-01 00:00:00
abstract:BACKGROUND:A recent study from our laboratory showed that induction of the multidrug resistance related drug efflux pump ABCG2 contributed to acquired resistance of human T cells to the disease modifying antirheumatic drug (DMARD) sulfasalazine (SSZ). OBJECTIVES:To investigate the duration of SSZ resistance and ABCG2 ...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.2003.006494
更新日期:2004-02-01 00:00:00
abstract::The effects of dietary fatty acid supplementation on various disease parameters in the spontaneously autoimmune MRL-mp-lpr/lpr mouse model of systemic lupus erythematosus before onset of disease were investigated. A fat deficient diet was supplemented with the following oils: olive oil, sunflower oil, evening primrose...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.45.12.1019
更新日期:1986-12-01 00:00:00
abstract:OBJECTIVES:Nicotinamide phosphoribosyltransferase (NAMPT)/pre-B-cell colony-enhancing factor/visfatin exerts multiple functions and has been implicated in the pathogenesis of rheumatoid arthritis. To gain insight into its role in arthritis and given that NAMPT is identified as a novel mediator of innate immunity, we ad...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/annrheumdis-2012-202403
更新日期:2013-10-01 00:00:00
abstract:OBJECTIVE:Anticitrullinated protein antibodies (ACPA) are the most predictive factor for the development of rheumatoid arthritis (RA). Epitope spreading towards more citrullinated epitopes occurs before the onset of RA. Here, the authors investigated whether specific epitope recognition allows the identification of spe...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/annrheumdis-2011-200421
更新日期:2012-02-01 00:00:00
abstract::The current management of autoimmunity involves the administration of immunosuppressive drugs coupled to symptomatic and functional interventions such as anti-inflammatory therapies and hormone replacement. Given the chronic nature of autoimmunity, however, the ideal therapeutic strategy would be to reinduce self-tole...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,评审
doi:10.1136/annrheumdis-2018-214024
更新日期:2019-03-01 00:00:00
abstract::The prevalence of grade III or IV osteoarthritis was determined in 210 patients with chronic renal failure, of whom 94 were receiving chronic haemodialysis and 116 had functioning renal transplants. The prevalence of grade III or IV osteoarthritis was three times greater in patients under 65 than in a control populati...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.49.6.378
更新日期:1990-06-01 00:00:00
abstract::Thirty-three patients with early peripheral synovitis were followed up for two to four years in order to study the relationship between fluctuations in rheumatoid factor (RF) levels and indices of clinical activity. Twenty-eight of these patients developed classical/definite rheumatoid arthritis (RA). Seventeen patien...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.43.5.679
更新日期:1984-10-01 00:00:00
abstract::The circulating levels of hyaluronate were determined in 36 patients with scleroderma and in 36 control subjects matched for age and sex. The mean serum hyaluronate concentration in patients with progressive systemic sclerosis (n = 25) was 131 +/- 67 (SD) microgram/l and significantly greater (p less than 0.001) than ...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.44.9.614
更新日期:1985-09-01 00:00:00
abstract:BACKGROUND:An association between major histocompatibility complex (MHC) genes, particularly those within the class II HLA region, and rheumatoid arthritis (RA) is well established, and accounts for an estimated 30% of the genetic component in RA. The MHC class II transactivator gene (MHC2TA) on chromosome 16p13 has re...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,meta分析,评审
doi:10.1136/ard.2007.077099
更新日期:2008-07-01 00:00:00
abstract::This review focuses on the contribution of genetic markers to the severity of radiological damage in rheumatoid arthritis (RA). Currently available biomarkers of more severe disease include elevated erythrocyte sedimentation rates or C-reactive protein levels and rheumatoid factor (RF) or anticyclic citrullinated prot...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,评审
doi:10.1136/ard.2009.117721
更新日期:2010-03-01 00:00:00
abstract:OBJECTIVES:To determine the prevalence and clinical associations of autoantibodies to myeloperoxidase (MPO) in an unselected series of well-characterised outpatients with rheumatoid arthritis (RA) and to compare the distribution of IgG subclasses of anti-MPO antibodies in these patients with that in patients with syste...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.53.1.24
更新日期:1994-01-01 00:00:00
abstract:BACKGROUND:Vascular damage is a key pathological process in systemic sclerosis (SSc) and accounts for significant disease-related morbidity. To determine the clinical burden of severe digital vasculopathy (SDV), we have reviewed hospital-based treatment for this important complication of SSc in a large single centre co...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.2007.072686
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVES:To evaluate the long-term efficacy and safety of canakinumab to treat patients with colchicine-resistant familial Mediterranean fever (crFMF) during Epoch 4 (weeks 41 to 113) of the CLUSTER study. METHODS:Patients received open-label canakinumab 150 or 300 mg, every 4 or 8 weeks during a 72-week period. We ...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,随机对照试验
doi:10.1136/annrheumdis-2020-217419
更新日期:2020-10-01 00:00:00
abstract:OBJECTIVES:To further evaluate the role of bacterial antigens in triggering inflammation in the joint in patients with reactive arthritis by studying local antibody synthesis in the joint. METHODS:Yersinia-specific antibodies in paired serum and synovial fluid samples from 29 patients with yersinia triggered reactive ...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.53.8.535
更新日期:1994-08-01 00:00:00
abstract:BACKGROUND:Rheumatoid arthritis (RA), psoriatic arthritis (PsA) and other spondylarthritides impose a great impact on the individual in addition to the costs on society, which may be reduced by effective pharmacological treatment. Industry-independent health economic studies should complement studies sponsored by indus...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.2008.103473
更新日期:2010-02-01 00:00:00
abstract:OBJECTIVE:To investigate quantitatively the mRNA expression levels of YKL-40, an established marker of rheumatoid and osteoarthritic cartilage degeneration in synovial fluid and serum, and a closely related molecule YKL-39, in articular chondrocytes. METHODS:cDNA array and online quantitative polymerase chain reaction...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.62.10.995
更新日期:2003-10-01 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:OBJECTIVES:To define pulmonary involvement on high resolution computed tomography (HRCT) of the thorax in lifelong non-smoking rheumatoid arthritis patients and to relate the results to pulmonary function, bronchial reactivity, and a variety of clinical and serological factors. METHODS:Twenty lifelong non-smoking RA p...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.54.4.308
更新日期:1995-04-01 00:00:00
abstract::A case is reported of polytenosynovitis in a 31-year-old male during the course of a severe bacteraemic illness caused by Haemophilus influenzae type b. The clinical presentation was similar to tenosynovitis caused by bacterial or viral agents. As the management of the H. influenzae tenosynovitis would differ from tha...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.38.6.561
更新日期:1979-12-01 00:00:00
abstract:BACKGROUND:In 2001, the European League Against Rheumatism developed and disseminated the first guidelines for musculoskeletal (MS) ultrasound (US) in rheumatology. Fifteen years later, the dramatic expansion of new data on MSUS in the literature coupled with technological developments in US imaging has necessitated an...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,实务指引
doi:10.1136/annrheumdis-2017-211585
更新日期:2017-12-01 00:00:00
abstract::A case of pachydermoperiostosis characterised by the presence of finger clubbing, periostosis, sweating of hands and feet is described. Modifications of capillaroscopic pattern and of arteriovenous anastomoses are reported. The periungual border and finger tip tissue showed diffuse endothelial hyperplasia, hyalinosis,...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/ard.48.3.240
更新日期:1989-03-01 00:00:00
abstract:INTRODUCTION:The molecular mechanisms of syndesmophyte formation in ankylosing spondylitis (AS) are yet to be characterised. Molecules involved in bone formation such as Wnt proteins and their antagonists probably drive syndesmophyte formation in AS. METHODS:This study investigated sequential serum levels of functiona...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章
doi:10.1136/annrheumdis-2011-200216
更新日期:2012-04-01 00:00:00
abstract:OBJECTIVES:IKZF1 and IKZF3 (encoding transcription factors Ikaros and Aiolos) are susceptibility loci for systemic lupus erythematosus (SLE). The pharmacology of iberdomide (CC-220), a cereblon (CRBN) modulator targeting Ikaros and Aiolos, was studied in SLE patient cells and in a phase 1 healthy volunteer study. METH...
journal_title:Annals of the rheumatic diseases
pub_type: 杂志文章,随机对照试验
doi:10.1136/annrheumdis-2017-212916
更新日期:2018-10-01 00:00:00