Abstract：
OBJECTIVE:Methotrexate (MTX) in low doses is widely used in the treatment of rheumatoid arthritis (RA) and it is not known whether its effects are due to immunosuppressive and/or anti-inflammatory actions. High concentrations of MTX inhibit the activity of thymidylate synthetase (TS) and dihydrofolate reductase essential for DNA synthesis. This study investigated the effects of low-dose MTX on TS activity and proliferation in human peripheral blood mononuclear cells (PBMC). METHODS:The MTX concentrations in our experiments were chosen according to the plasma concentrations measured in 8 RA patients treated with MTX. The effect of MTX on TS activity and DNA synthesis were measured in stimulated normal PBMC and in PBMC obtained from 6 RA patients treated with oral MTX before and 2 hours after intake of their weekly MTX dose. The effect of MTX on the TS mRNA concentration was also investigated in order to elucidate its effect on TS production. RESULTS:Low-dose MTX significantly inhibited TS activity and the proliferation of stimulated PBMC independent of the mode of activation. Interestingly, the concentration of TS mRNA in normal PBMC was upregulated by the presence of MTX. Finally, there was no difference between TS activity measured before and after MTX intake in 6 RA patients on long-term MTX treatment. CONCLUSION:We show that low concentrations of MTX inhibit TS activity in vitro. An in vivo effect cannot, however, be proven given our study design. The role of these in vitro findings is discussed, particularly in relation to the in vivo effects of MTX.
journal_name
Clin Exp Rheumatoljournal_title
Clinical and experimental rheumatologyauthors
Hornung N,Stengaard-Pedersen K,Ehrnrooth E,Ellingsen T,Poulsen JHkeywords:
subject
Has Abstractpub_date
2000-11-01 00:00:00pages
691-8issue
6eissn
0392-856Xissn
1593-098Xjournal_volume
18pub_type
杂志文章abstract：OBJECTIVES:This systematic literature review (SLR) and network meta-analysis (NMA) was aimed at comparing the relative efficacy and safety of abatacept (ABA) with other currently recommended therapies for patients with early RA. METHODS:An SLR (January 1998 to June 2018) was conducted including MEDLINE®, Embase, and C...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章,meta分析
doi：
更新日期：2020-09-01 00:00:00
abstract：:Podagra is a term used to describe acute monoarthritis of the first metatarsophalangeal (1st MTP) joint. The most common diagnoses of arthritis in this joint are: crystal-induced synovitis, septic arthritis, traumatic conditions and reactive arthritis. When etiologies other than gout are involved this is frequently re...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2005-03-01 00:00:00
abstract：:The immunological function of patients with inactive systemic lupus erythematosus (SLE) receiving chronically administered, low-dose cyclophosphamide (CY) together with prednisolone (PSL) was compared with that of inactive patients receiving PSL alone. A striking selective suppression of "genuine" resting, but not "pa...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：1993-05-01 00:00:00
abstract：:Lymphocyte subsets in the peripheral blood of 10 patients with RA were studied using monoclonal antibodies. The mean percentages of total T, T helper, T suppressor and TAR in the peripheral blood of RA patients were not different from those observed in normal controls. In the synovial fluid the mean percentages of T s...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：1984-10-01 00:00:00
abstract：:A female patient diagnosed with ankylosing spondylitis experienced a new onset acute iritis following the initiation of etanercept therapy and recurrent episodes of iritis continues during the treatment of etanercept. Etanercept-associated iritis was suspected. Anti-TNF therapies can alleviate uveitis in some studies,...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章,评审
doi：
更新日期：2009-09-01 00:00:00
abstract：OBJECTIVES:Limited data exist regarding the incidence rate and relative risks of major adverse cardiovascular events in women with lupus who have successfully delivered compared to those who have not been pregnant. METHODS:A retrospective, population-based matched cohort study was performed on women with lupus from 20...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2014-01-01 00:00:00
abstract：OBJECTIVES:Medical follow-up in the most appropriate treatment setting is important for patients with juvenile idiopathic arthritis (JIA). The aims of this study were 1) to identify the settings in which JIA patients are followed up after leaving paediatric rheumatology, and 2) to compare the clinical profile of patien...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2010-09-01 00:00:00
abstract：OBJECTIVE:Crude preparations of Fun-boi (Stephania tetrandra), a traditional antirheumatic herb, have been reported to have immunomodulatory effects on both cell-mediated and humoral immunity in vitro, but little is known about the mode of action in vivo. The objective of this study was therefore to evaluate the effica...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
abstract：OBJECTIVE:Pulmonary involvement is a common finding in adults with systemic lupus erythematosus (SLE). The aim of this study was to investigate the frequency of pulmonary abnormalities in patients with childhood-onset SLE, with particular reference to interstitial lung disease (ILD), and to examine any association betw...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2006-03-01 00:00:00
abstract：OBJECTIVES:In this study, we used hypercholesterolaemic apolipoprotein E-deficient (Apoe-/-) mice to investigate LDL/oxLDL effect on synovial inflammation and cartilage destruction during antigen-induced arthritis (AIA). Further, as macrophage FcγRs are crucial to immune complex-mediated AIA, we investigated in vitro t...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2019-11-01 00:00:00
abstract：:Patients with ankylosing spondylitis (AS) may develop cardiovascular manifestations ranging from asymptomatic forms to life threatening conditions. The most important cardiovascular manifestation of AS is aortitis, which frequently involves the aortic root and the ascending aorta leading to valvular insufficiency. The...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章,评审
doi：
更新日期：2008-05-01 00:00:00
abstract：:During the last decade, antiphospholipid antibodies and their clinical manifestations have given rise to increasing interest and have been associated with a wide spectrum of clinic expression, including arterial and venous thrombosis, thrombocytopenia, recurrent fetal wastage, Coombs positive haemolysis, livedo reticu...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章,评审
doi：
更新日期：1993-11-01 00:00:00
abstract：OBJECTIVE:Ulnar neuropathy at the elbow (UNE) is the second most frequent focal neuropathy of the arm. The aim of our study was to establish the frequency of anatomical changes of the cubital tunnel capable of causing UNE. METHODS:Ninety-one consecutive patients affected by UNE, as established by neurophysiological st...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2010-01-01 00:00:00
abstract：:Lower urinary tract involvement is an uncommon manifestation of systemic sclerosis; however, it may represent a troublesome disturbance affecting the quality of life in systemic sclerosis patients. Here we report the case of a middle-aged woman with a 5-year history of systemic sclerosis, who developed severe and prog...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章,评审
doi：
更新日期：1998-09-01 00:00:00
abstract：OBJECTIVES:Patients with rheumatoid arthritis (RA) are at an increased risk for cardiovascular disease (CVD) resulting from impairments in vascular function and morphology. CVD risk prediction scores can identify patients at high risk of CVD, but little is known about whether they relate with assessments of vascular fu...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2014-11-01 00:00:00
abstract：:There is increasing evidence supporting the involvement of Leu 1+B cells in the development of human autoimmune diseases. In this study, the frequency of Leu 1+B cells has been analysed by a multiparameter FACS machine in newborn cord blood, and in the peripheral blood of several autoimmune patients and their healthy ...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：1990-05-01 00:00:00
abstract：:Abdominal fat tissue aspirates from 20 patients with biopsy-proved amyloidosis were investigated by polarized microscopy after staining with Congo-red. Positive results were obtained in 4 of 5 patients with primary amyloidosis (AL) and in none of 15 with amyloidosis (AA) of Familial Mediterranean Fever (FMF). We sugge...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：1988-10-01 00:00:00
abstract：:To assess the relationship between blood and tissue steroid levels, cortisol and dehydroepiandrosterone sulphate (DHEAS) were measured by radioimmunoassay (RIA) in blood and joint tissues from a group of patients with RA (N = 29) ranging in age from 26 to 80 years (mean 63, SD: 13) and another group with secondary ost...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：1993-11-01 00:00:00
abstract：OBJECTIVES:The need to include patients' perspectives as key outcomes in clinical trials is widely accepted. No disease-specific patient-reported outcomes have been developed in Takayasu's arteritis. This project was designed to identify outcomes of importance to patients with Takayasu's arteritis during active disease...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2018-03-01 00:00:00
abstract：OBJECTIVE:The epidemiology of giant cell arteritis (GCA) may indicate a pathogenetic relationship between GCA and female sex hormone metabolism; GCA is two to four times more common in women compared with men. Our previous analyses gave no support for the hypothesis that the pathogenesis of GCA should be related to som...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2006-03-01 00:00:00
abstract：OBJECTIVES:We aimed to assess changes in myositis core set measures and ancillary clinical and laboratory data from the National Institutes of Health's subset of patients enrolled in the Rituximab in Myositis trial. METHODS:Eighteen patients (5 dermatomyositis, 8 polymyositis, 5 juvenile dermatomyositis) completed mor...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章,多中心研究,随机对照试验
doi：
更新日期：2014-09-01 00:00:00
abstract：OBJECTIVES:To compare the occurrence of non-infectious uveitis based on the type of tumour necrosis factor (TNF) inhibitor used to manage spondyloarthritis in ankylosing spondylitis (AS) patients. METHODS:The occurrence (new-onset and recurrence) of uveitis was reviewed retrospectively in AS patients receiving differe...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2020-11-01 00:00:00
abstract：:We describe two cases, a 28-year-old woman and a 46-year-old man, with mouth and genital ulcers with inflamed cartilage (chondritis of the nose and ears) (MAGIC syndrome). The conditions of both patients were resolved by treatment with corticosteroid and colchicine. We also review the English literature related to thi...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2006-09-01 00:00:00
abstract：OBJECTIVES:To assess the long-term safety and effectiveness of tumour necrosis factor (TNF) inhibitors in the treatment of systemic sclerosis (SSc) patients with inflammatory arthritis. METHODS:SSc patients who fulfilled the ACR criteria and had inflammatory arthritis followed in The Scleroderma Programme at the Mount...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2012-03-01 00:00:00
abstract：OBJECTIVES:The aim of this paper is to present two cases of severe idiopathic non-infectious paediatric panuveitis, unresponsive to traditional therapy, successfully treated with Adalimumab (HumiraTM, Abbott Pharmaceutical Inc.) in the long term. METHODS:The data of the two cases are presented and the literature is re...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2013-05-01 00:00:00
abstract：OBJECTIVES:The ImmuKnow (Cylex) assay has been reported to predict the risk of infection in some diseases; however, it is uncertain whether ImmuKnow can predict the risk of infection in lupus nephritis (LN) patients receiving immunosuppressive therapy. METHODS:The ImmuKnow Immune Cell Function Assay (Cylex, Inc., Colu...
journal_title：Clinical and experimental rheumatology
pub_type： 临床试验,杂志文章
doi：
更新日期：2014-05-01 00:00:00
abstract：:Systemic sclerosis remains a challenging disease despite progress that has taken place in the management of organ-based complications. Overall management strategies need to take into account the features of the disease that are common to almost all patients such as skin involvement, gastro-oesophageal manifestations a...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章,评审
doi：
更新日期：2014-03-01 00:00:00
abstract：OBJECTIVES:An impaired availability of nitric oxide (NO), related to polymorphisms in endothelial nitric oxide synthase (eNOS) gene, may influence the microvasculature in systemic Sclerosis (SSc). Three potential eNOS gene polymorphisms [tandem 27-bp repeats (VNTR) in intron 4, T786C in promoter region and G894T in exo...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2010-03-01 00:00:00
abstract：OBJECTIVE:To study the tissue distribution and persistence of arthritogenic and non-arthritogenic Eubacterium cell walls (CWs), using arthritogenic Eubacterium aerofaciens and non-arthritogenic Eubacterium limosum. METHODS:Eubacterium aerofaciens or Eubacterium limosum CW was injected into Lewis rats intraperitoneally...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：1999-05-01 00:00:00
abstract：OBJECTIVES:Until now, glucocorticoids (GCs) with their anti-inflammatory and immune suppressive effects are one of the most effective agents in therapy of several autoimmune disorders including rheumatoid arthritis (RA). Glucocorticoid receptor (GR) polymorphisms may result in variable sensitivity to glucocorticoids pl...
journal_title：Clinical and experimental rheumatology
pub_type： 杂志文章
doi：
更新日期：2020-09-01 00:00:00
