Search for: rheumatoid arthritis methotrexate autoimmune disease biomarker gene expression GWAS HLA genes non-HLA genes
| ID | PMID | Title | PublicationDate | abstract |
|---|---|---|---|---|
| 3330700 | HLA and rheumatoid arthritis: an analysis of multicase families. | 1986 Jun | In a study of multicase RA families, significantly raised frequencies of the HLA antigens DR4, DR1, Bw62, Cw3, A2, A31 and significantly lower frequencies of DR2, DR3, and B8 were found in probands compared to normal controls. When haplotype frequencies were compared between probands and controls, two haplotypes A2-B44-DR4 and A2-Bw62-DR4 were at higher frequency in probands. These differences no longer reached significance when only DR4-containing haplotypes were compared between probands and controls. A significantly lower haplotype frequency of A1-B8-DR3 was observed in probands compared to controls. This difference did not remain significant when only non-DR4 haplotypes were compared. Using an affected sibling pair ratio method, significant linkage between HLA and RA was found (P less than 0.01). Significant linkage was also observed between HLA and seropositivity. Analysis of Hardy-Weinberg equilibrium for the DR locus did not support the suggestion that DR4-associated RA susceptibility was inherited as a dominant trait. In addition it did not support the notion of an additive effect of DR4 and DR1 in RA susceptibility as these antigens were not found together more frequently than predicted by their individual gene frequencies. | |
| 2681758 | Circulating immune complexes and rheumatoid arthritis: the induction of immune complex for | 1989 Oct | Circulating immune complexes (CIC) as detected by the C1q binding assay (C1qBA) in sera from patients with rheumatoid arthritis (RA) were not demonstrable in these sera with the indirect granulocyte phagocytosis test (IGPT). This discrepancy could be explained by the finding that polyethylene glycol (PEG), used in the C1qBA, enhanced the binding of rheumatoid factor IgM (RFIgM) and IgG resulting in immune complex (IC) formation. The addition of PEG to RA sera and subsequent testing of these sera in the IGPT revealed increased uptake of IC by these cells, dependent on the PEG dose. Addition of purified RFIgM to a normal human serum generated a positive IGPT in a dose dependent way. We conclude that in RA sera PEG induces IC between RFIgM and IgG. Therefore, assays devised to measure CIC in RA sera which are based on PEG (like the C1qBA) overestimate the amounts of IC present in the circulation in vivo. | |
| 3674213 | Downward comparison and coping with serious medical problems. | 1987 Oct | Correlates of selective comparisons by mothers of high-risk infants and individuals with rheumatoid arthritis showed that mothers were especially likely to make downward comparisons. Arthritis patients making downward comparisons were rated by their health care providers as more positively adjusted, independent of actual severity of illness. Implications for support providers are discussed. | |
| 3139881 | Pure red cell aplasia in rheumatoid arthritis. | 1988 Jul | We report a patient with longstanding rheumatoid arthritis (RA) who developed pure red cell aplasia. This condition is a rare complication of RA. Our patient recovered, apparently in response to treatment with corticosteroids and cyclophosphamide followed by azathioprine. | |
| 3524728 | Study of sulphamethoxazole in rheumatoid arthritis. | 1986 Aug | Twenty-three patients with rheumatoid arthritis (RA) entered a single-blind cross-over study of sulphamethoxazole 2 g daily compared to placebo. Sulphamethoxazole was administered for 3 months during the 6-month study. Sulphamethoxazole exhibited properties commensurate with a second-line effect with a significant acute-phase reactant response and a parallel change in the clinical state. Adverse effects were common and resulted in nine drug-related withdrawals, mainly due to nausea and vomiting. There were also reversible abnormalities in liver function tests on the active drug. The role of sulphonamides in treatment of RA requires further exploration. | |
| 10279100 | Effectiveness of self-instruction for arthritis patient education. | 1986 Sep | Self-instruction is one means of providing patient education, allowing the health professional to teach a larger number of persons than with one-to-one or group instruction and at a lower cost. The purpose of this study was to examine the effects of self-instruction on learning, satisfaction with the teaching approach, and health status of persons with rheumatoid arthritis (RA). A control-group pretest-posttest design was used. Thirty subjects receiving care at a rheumatology clinic who met study criteria were randomly assigned to two groups: self-instruction and control. One-way analysis of covariance on posttest Rheumatoid Arthritis Knowledge Inventory (RAKI) scores, with the pretest as covariate, was used to examine the difference in learning between the self-instruction and control groups. There was a significant difference between the groups (P = 0.01). Participants who completed the self-instructional program had improved scores on the posttest as compared to the control. Subjects rated self-instruction as an effective teaching strategy in terms of promoting learning about RA and patient acceptability. t-Test demonstrated no significant difference between the groups in health status. Significant correlations were found between subjects' test scores and selected variables. | |
| 2955763 | [The heart and rheumatoid arthritis. Prospective study of 100 cases]. | 1987 Mar | We studied one hundred consecutive patients with rheumatoid arthritis from the cardiological point of view through non invasive methods to detect the frequency of cardiovascular complications. Seventy three (73%) were females and twenty seven (27%) males. Mean age, 48.6 years. Mean age of presentation of the disease, 34.2 years. Mean age of duration of the illness, 21.8 years. Fifty seven per cent had some type of cardiopulmonary complication. Clinically 52 per cent referred some type of cardiopulmonary symptoms. The physical examination was abnormal in 27 per cent. Rheumatoid factor (Waaler-Rose) was positive in 82 per cent. The cardiac X ray series was abnormal in 33 per cent, the resting electrocardiogram in 48 per cent and the M mode echocardiogram in 52 per cent of the cases. The complications detected were: pericardial effusion (21%); pleural effusion (9%); pulmonary fibrosis (6%) which represents a higher incidence of previously reported in the literature; congestive heart failure (10%); valvular lesion (9%) among those are included six patients with valvular heart disease of non detectable etiology; ischemic heart disease (8%); myocarditis (6%); rythm disturbances (22%) and conduction defects (20%) including a 46 year old female patient who developed a complete AV block during an exacerbation of her illness, requiring the insertion of definitive pacemaker. Our results showed that some of the detected lesions are in part more frequent and severe than those reported in the literature, probably due to, that on one hand their search was intentional and on the other, our group was constituted by with severe and long standing rheumatoid arthritis. | |
| 2111747 | Impaired secretion of parathyroid hormone in patients with rheumatoid arthritis: relations | 1990 Mar | Hypocalcaemic tests, employing infusion of EDTA over 1 h, were performed in 22 patients with rheumatoid arthritis (RA) and 14 healthy controls. The basal levels of calcium and parathyroid hormone (PTH) were not significantly different in the two groups. The RA patients displayed a markedly impaired PTH response during infusion of EDTA compared with the controls although the reduction of plasma ionized calcium was similar. The PTH response was furthermore significantly, inversely, related to the inflammatory activity measured as sedimentation rate (r = 0.65; P less than 0.01), i.e. the more pronounced the inflammation, the less the capacity to secrete PTH. Since secretion of PTH is related to the intracellular calcium concentration of the parathyroid cells, these findings are in line with previous observations of a higher intracellular calcium content in inflammatory disease. They also support the earlier indications of reduced bone turnover in inflammatory arthritides. An insufficient parathyroid function could be one factor contributing to bone disease in these conditions. | |
| 2528511 | Decrease in disease activity and concomitant increase in the percentage of peripheral bloo | 1989 | Bucillamine: N-(2-mercapto-2-methyl-propanoyl)-L-cysteine, is a newly synthesized slow-acting anti-rheumatic drug with two SH-bonds in its chemical structure. Eleven patients with rheumatoid arthritis (RA) were treated with Bucillamine, and both Lansbury's activity index and the percentage of suppressor T-cells (Leu 2a+ Leu 15+) were serially monitored for 10 weeks. The percentage of suppressor T-cells, which was depressed in the active disease state, reached normal levels with clinical improvement according to Lansbury's index. Bucillamine may have an immunomodulating activity and may be a useful drug for the treatment of RA. | |
| 1707460 | Peptide containing nerves in human synovium: immunohistochemical evidence for decreased in | 1990 Dec | The innervation of normal and rheumatoid human synovium was studied by immunofluorescence microscopy. Antibodies against the general neuronal marker protein gene product (PGP) 9.5 and specific neuropeptides were used. We observed sensory nerves containing substance P (SP) and calcitonin gene related peptide (CGRP) as well as autonomic sympathetic fibers immunoreactive for neuropeptide tyrosine (NPY), its C terminal peptide (C-PON) and the catecholamine synthesizing enzyme tyrosine hydroxylase (TH). Three subpopulations of nerve fibers labelled with SP and CGRP were identified: some stained for SP or CGRP only and others contained both peptides. NPY/C-PON and TH labelled predominantly perivascular nerves. Quantification of immunostained nerves revealed a significantly decreased innervation of rheumatoid synovia. The densities of both PGP 9.5 and neuropeptide containing nerves were lower in all rheumatoid samples. Our results are compatible with a local release of neuropeptides into joint fluid and point to a disturbed neuronal control of rheumatoid synovial tissue. | |
| 3085683 | Bronchiolitis in a rheumatoid arthritis patient receiving auranofin. | 1986 Apr | A patient with severe rheumatoid arthritis and sicca symptoms was treated with auranofin. During auranofin therapy, she developed irreversible airways obstruction due to bronchiolitis. Whereas this complication could have been due to her underlying disease, we discuss here the possibility of its being related to the auranofin therapy. | |
| 3684022 | Protocol for administration and management of chrysotherapy (gold therapy). | 1987 Oct | Rheumatoid arthritis is a chronic, systemic inflammatory disease, characterized by polyarticular inflammation, joint destruction, deformity and loss of function. Chrysotherapy is indicated in documented cases of rheumatoid arthritis in which other methods of treatment including rest, physical therapy, analgesics and non-steroidal anti-inflammatories have failed. Clinical guidelines for the administration and management of chrysotherapy are presented for the nurse practitioner providing care for patients in which gold therapy has been prescribed by a rheumatologist. Careful initial assessment, follow-up and education are necessary for the effective treatment of patients receiving gold therapy. | |
| 2661576 | The rheumatoid swan-neck deformity. | 1989 May | It is important to evaluate each swan-neck deformity to determine the mobility and radiographic condition of the PIP joint. This information forms a basis for logical treatment. In those fingers with little or no loss of motion, the treatment alternatives include DIP joint fusions, dermadesis, or flexor tenodesis. With significant loss of PIP joint motion, an attempt is made to first restore passive motion by manipulation and lateral band or skin releases. It then becomes essential to restore flexor tendon excursion. In those patients with destroyed joint surfaces the salvage procedures of fusion and arthroplasty are the treatments of choice. | |
| 2588155 | [The effect of intra-articular treatment with corticosteroids, polyvinylpyrrolidone and di | 1989 | Synovial fluid (SF) contained by the knee joint from 102 patients (80 with rheumatoid arthritis, 12 with osteoarthrosis, 10 with posttraumatic arthritis) and controls was studied for cytosis, activity of acid phosphatase, N-acetyl-beta-D-glucosaminidase, and cAMP and cGMP content. In 18% of the cases, the local corticosteroid treatment of patients with RA produced no beneficial effect. To treat RA and OA patients, dimethylsulfoxide (DMSO, 5 ml of 20% solution) and polyvinylpyrrolidone (PVP, 5 ml of 15% solution) were administered intra-articularly. In OA patients, injection of DMSO and PVP provided a good therapeutic effect. In RA patients, injection of DMSO produced a beneficial antiinflammatory action but it appeared short-term. The use of PVP in RA patients with pronounced local process enhanced synovitis symptoms, entailed an increase of the SF amount and cytosis, did not reduce the activity of lysosomal enzymes, and produced a negligible effect on the level of cyclic nucleotides. A mixture of DMSO (1 ml of 100% solution) and PVP (5 ml of 15% solution) applied to the treatment of RA patients exerted a favourable action on the local process in the joint, namely reduced all the parameters mirroring the intensity of inflammation. | |
| 3136775 | Detection of tumor necrosis factor alpha but not tumor necrosis factor beta in rheumatoid | 1988 Aug | Synovial fluids from 6 of 12 patients with rheumatoid arthritis (RA) and from 3 of 11 patients with reactive arthritis contained measurable levels of tumor necrosis factor alpha (TNF alpha). Seven of 12 sera from RA patients contained TNF alpha, while only 1 of those from reactive arthritis patients was positive. Gamma-interferon was detected in the synovial fluids and sera of only the RA patients. Tumor necrosis factor beta was not detected in any sera or synovial fluids. RA patients with detectable TNF alpha had higher erythrocyte sedimentation rates and synovial fluid leukocyte counts. | |
| 1679339 | Activities of dipeptidyl peptidase II, dipeptidyl peptidase IV, prolyl endopeptidase, and | 1991 Apr | We examined the activities of peptidases in the synovial membrane from patients with rheumatoid arthritis (RA) and osteoarthritis (OA). Dipeptidyl peptidase II (DPP II), prolyl endopeptidase (PEP), and collagenase-like peptidase (CLP) activities were higher in knee joint synovial membrane from patients with RA than in that from patients with OA. DPP II and PEP activities in knee joint synovial membrane of patients with RA increased in parallel with the increase in joint fluid volume, whereas DPP IV activity decreased in parallel with the increase in joint fluid volume. These results suggest that these peptidases in the synovial membrane may play some role in immunological disturbances in the joints of patients with RA. Measurement of these peptidases in synovial membrane may be useful in the diagnosis of the severity of local joint inflammation. | |
| 2949911 | Immunotherapy in rheumatoid arthritis by T-suppressor lymphocytes: experimental model in v | 1986 Dec | In this study, the immunoregulation of IgG and IgM synthesis by synovial fluid lymphocytes (SFL) in rheumatoid arthritis (RA) was investigated. A group of 15 sero-positive rheumatoids with a level of lymphocytes in the joint effusion fluids greater than 40% were selected. In 20 experiments, Con A stimulated peripheral blood lymphocytes (PBL) suppressed Ig synthesis by autologous SFL, tested in the presence and absence of pokeweed mitogen. Mean inhibition value for IgG production was 70.5% +/- 7.1 and for IgM 64.8% +/- 7.5. There were significant differences in the numbers of IgG and IgM producing cells compared to that of controls (p less than 0.001). In contrast, SFLs preactivated with Con A had little suppressive effect; but when SFL's suppressor cells were co-cultured with PBL in a diffusion chamber (used as model for the human joint), they were able to decrease Ig synthesis. The highest inhibition was induced when SFL were pre-incubated with allogeneic PBL from healthy donors. Mean decreases were 514 counts per minute (CPM) for IgG and 486 CPM for IgM compared to control values, almost 50% of the total spontaneous production. These results indicate that the impairment of the suppressor function is restricted to the site of inflammation and can be corrected by PBL. The data hints that intra-articular immunotherapy may have potential therapeutic value. | |
| 3814198 | Protein traffic in human synovial effusions. | 1987 Jan | Concentrations of 5 marker proteins were measured in synovial fluid and serum samples from knee effusions of 11 patients with rheumatoid arthritis and 9 with osteoarthritis. Indirect determinations of synovial plasma flow and lymphatic drainage were obtained by measuring iodide clearance (ml/minute) and radio-albumin clearance (ml/minute). Together with protein concentrations, these determinations allowed us to calculate: the flux of each marker protein through synovial tissues (mg/minute); the volume of plasma cleared by synovium per unit time (ml/minute); and the fractional extraction per passage through the synovial microcirculation (protein permeance). These measures differed substantially between rheumatoid arthritis and osteoarthritis patient populations and quantified the severity of the microvascular lesion in rheumatoid synovitis. | |
| 2158476 | Human fibroblasts release reactive oxygen species in response to treatment with synovial f | 1990 | Human fibroblasts in primary culture released reactive oxygen species upon exposure to synovial fluid obtained by joint aspiration from twelve patients suffering from rheumatoid arthritis. The primary radical produced was O2- as determined by ESR spin trapping and cytochrome c reduction. In contrast to the oxidative burst in granulocytes and monocytes, radical formation proceeded continuously for at least four hours. Low-level chemiluminescence was increased upon exposure to inflammatory human synovial fluids. Spectral characteristics and effects of azide and 1,4-diazabicyclo-(2,2,2)-octane led to the conclusion that the photoemissive species were excited carbonyls. Radical production and light emission were not altered either by xanthine or allopurinol, nor by azide, cyanide or rotenone. The O2- production increased in the presence of NADH or NADPH, making an NAD(P)H oxidase a likely source. The liberation of reactive oxygen species correlated with the number of leukocytes present in the inflammatory joint fluids, but not with the concentrations of immunoglobulins and complement factor C3. | |
| 2241269 | Demonstration of a geode by magnetic resonance imaging: a new light on the cause of juxta- | 1990 Oct | The magnetic resonance imaging (MRI) features of a rheumatoid arthritic geode are presented. Development of such a cyst from before x ray diagnosis to its coalescence with the wrist joint is described. The evidence suggests that these juxta-articular cysts are not merely an intrusion of the synovial cavity into the bone marrow but start as isolated structures beneath the subchondral bone. |