Search for: rheumatoid arthritis methotrexate autoimmune disease biomarker gene expression GWAS HLA genes non-HLA genes
| ID | PMID | Title | PublicationDate | abstract |
|---|---|---|---|---|
| 6969346 | The rheumatic manifestations of leprosy (Hansen disease). | 1980 Nov | Leprosy is a rare disorder in the United States, yet the rheumatic features of the disease appear to be common and frequently are the primary complaint. We observed rheumatic syndromes of erythema nodosum leprosum (ENL) occurring with and without arthritis, a swollen hands syndrome, cutaneous vasculitis, or myositis in the majority (15 of 21) of our patients. These syndromes were distinctive, sometimes dramatic, and appeared to "mimic" idiopathic rheumatic diseases, substantially delaying an accurate diagnosis of leprosy in some patients. These complications were the major cause of morbidity in our 21 patients and became dominant clinical problems requiring additional chemotherapy. | |
| 7123126 | [Mononucleated phagocytes from rheumatoid synovial fluid. Synthesis of prostanoids and fir | 1982 Jun | An original and easily reproducible technique for isolating and culturating mononucleated phagocytes from rheumatoid synovial fluid was used by the authors to study the synthesis of PGE2, PGF alpha 2 and TxB2 by macrophages taken from 16 patients with rheumatoid arthritis. The functional importance of these macrophages was evaluated by comparing their ratios of prostaglandin synthesis. PGE2 and TxB2 are released in large quantities and are increased after stimulation with zymosan. Two distinct cell populations having different biochemical characteristics were identified from these macrophages based on their capacity to synthesize prostaglandins. Prostaglandin synthesis was correlated with the clinical progression of rheumatoid arthritic disease as evaluated by Lee's index and the time required to loosen up morning joint stiffness in these patients. No correlation was found between prostaglandin synthesis and the quantity of synovial fluid in the affected joint. The first results of a pharmacological study evaluating the activity of non steroid anti-inflammatory drugs using this experimental model are presented here. The addition of indomethacin to culture medium produces dose-dependent inhibition of prostaglandin synthesis. | |
| 380913 | A crossover clinical trial of piroxicam, indomethacin and ibuprofen in rheumatoid arthriti | 1979 | A single-blind, crossover trial was carried out in 24 patients with definite or classical rheumatoid arthritis to compare the effectiveness and tolerability of piroxicam (20 mg once daily) with that of indomethacin (25 mg 3-times daily), ibuprofen (400 mg 3-times daily) and placebo. Each drug was given in random order for a period of 1 week. Pain, joint tenderness and morning stiffness decreased and grip strength increased with piroxicam compared to placebo; no statistically significant difference could be found between piroxicam and the two other active agents. A reduction in joint circumference could not be demonstrated with piroxicam or ibuprofen but most patients did not have reducible swelling in their finger joints. Piroxicam was just as effective as the other two drugs overall, but fewer side-effects were noted with piroxicam. | |
| 6552032 | Heterogeneity of human amyloid protein AA and its related serum protein, SAA. | 1983 Jan | The heterogeneity of the human amyloid proteins SAA and AA was studied. Both proteins could be separated into several fractions by ion-exchange chromatography. Amino acid analysis of the ion-exchange-chromatographed fractions of protein AA showed that the main difference was in the length of the polypeptide. Thus, it seems that the original AA preparation consists of a mixture of AA proteins with length ranging from 66 to 78 amino acid residues. By enzymatic degradation of three different forms of SAA with kallikrein, fragments were formed with a molecular weight very similar to that of protein AA. | |
| 7378166 | Medicine in orthopaedics: a role for the rheumatologist? | 1980 Feb | In a seven-month period 102 patients admitted for elective orthopaedic surgery (total hip replacement for more than 50%) were referred for a medical opinion, and more than 70% were seen preoperatively. Twenty-nine patients were considered unfit for operation for a variety of different reasons, but after suitable treatment surgery was possible for most of this group. General practitioners and surgeons alike provided insufficient information prior to admission, and this resulted in postponement of operations. A wide variety of conditions was seen pre- and post-operatively, and a very high level of diagnostic criticism was maintained by orthopaedic junior staff but management of certain metabolic conditions was poor. As the number of elderly patients requiring joint replacement surgery increases, great care must be exercised in preoperative assessment in order to maintain an economic service. Combined orthopaedic and rheumatology consultation might be advantageous. | |
| 3964813 | Hybridoma anti-DNA autoantibodies from patients with rheumatoid arthritis and systemic lup | 1985 Jan | Hybridoma anti-DNA antibodies have been generated from the fusion of the GM 4672 lymphoblastoid line with peripheral blood lymphocytes from four normal subjects, nine patients with rheumatoid arthritis (RA), and 13 patients with systemic lupus erythematosus (SLE). A total of 441 hybridoma clones were obtained, of which 37 secreted anti-DNA autoantibodies. The nucleic acid binding characteristics of the anti-DNA antibodies produced by two hybridomas from normal subjects, nine hybridomas from RA patients, and 18 hybridomas from SLE patients are reported. The hybridoma anti-DNA antibodies from all three groups showed similar antigen-binding characteristics for denatured DNA (dDNA), native DNA (nDNA), poly(I), poly(dT), and cardiolipin, by both direct binding and competitive binding analyses. One difference noted between normal-derived anti-DNA antibodies and autoimmune-derived antibodies was the inability of the former to react with z-DNA. However, this requires further substantiation with larger numbers of normal-derived clones. The broad overlap of reactivity to nucleic acid antigens among individual anti-DNA autoantibodies found in two clinically different autoimmune diseases, namely RA and SLE, suggests that the pathogenicity of anti-DNA autoantibodies may bear no relationship to their nucleic acid antigen-binding characteristics. | |
| 6487930 | Metabolic bone disease among in-patients with rheumatoid arthritis. | 1984 Nov | Twenty-five consecutive in-patients who had suffered from rheumatoid arthritis for at least five years were investigated radiologically, histologically and biochemically for evidence of metabolic bone disease. Dietary intake of vitamin D was universally well below recommended levels. Serum 25-hydroxycholecalciferol (25-OHD) concentrations did not correlate with dietary intake of vitamin D but correlated significantly with a sunlight exposure score (p less than 0.01). Despite seven patients having 25-OHD levels below the normal reference range, no cases of osteomalacia were found. Pathological fractures, often initially unrecognized, had occurred in the lower limb bones of seven patients in the previous five years. Those with fractures of the leg bones had evidence of more pronounced osteoporosis of the axial skeleton radiologically and histologically and five of the seven had been taking oral corticosteroids. There was close agreement between qualitative histological assessment of osteoporosis and radiographic evidence of vertebral collapse and those with the severest osteoporosis had lower serum levels of 25-OHD than the rest (p less than 0.02). Ten subjects had reduced xylose absorption tests, although frank malabsorption was not found, and in five patients studied the jejunal mucosa was normal. | |
| 7063811 | The effect of alkylating agents on the reproductive and hormonal testicular function in pa | 1982 | An evaluation of testicular function was undertaken in 11 boys and young men aged 14-26 years suffering from rheumatoid arthritis complicated by amyloidosis and treated with cyclophosphamide and chlorambucil. 7 cases were studied during life and 4 at autopsy. Semen analysis showed azoospermia in 4 cases; in one, cryptozoospermia; in one, oligoasthenotheratozoospermia; and in one, asthenoteratozoospermia. In 4 patients with azoospermia and in one with cryptozoospermia, testicular biopsy was done for histo-pathological examination. In patients with azoospermia, only Sertoli cells were present in the seminiferous tubules. In one patient with cryptozoospermia, normal spermato- and spermiogenesis was found only in occasional seminiferous tubules. Microscopic examination of the testis failed to show any changes in the structure of the interstitial gland in any of the patients. Amyloid deposits were found in the vascular walls of the interstitial gland in one patient only. The serum testosterone level was depressed in 3 patients of the 9 examined. The LH level was elevated in 2 patients. The mean value of testosterone-LH ratio was significantly lower in patients treated with alkylating agents as compared with patients not so treated. Serum FSH level was elevated in 6 patients. Post-mortem examination of the testis in 4 patients showed complete absence of the germinal epithelium and only the presence of Sertoli cells. In 2 cases, amyloid deposits were found in the vascular walls in the rete testis. It was concluded that alkylating agents, besides damaging the testicular germinal epithelium, also affect the function of Leydig cells. | |
| 7314754 | [Influence of various non-steroid antirheumatic drugs on the electric potential between th | 1981 Nov | Non-steroid antirheumatic drugs inhibit the synthesis of prostaglandin, which results in a reduction in the efficacy of the gastric mucosal barrier. The transmural electric potential difference of the stomach wall would appear to be a useful criterion for mucosal barrier function. After 4 weeks of treatment with Indomethacin, Azapropazpone, Diclofenac or Phenylbutazone, a significant reduction in the gastric potential difference as compared with the pre-treatment measurement was observed. Accordingly, non-steroid antirheumatics give rise to a reduction in the functional efficacy of the mucosal barrier. | |
| 324150 | [Laboratory diagnosis in rheumatology]. | 1977 Feb 1 | The laboratory diagnostics essentially contributed to the pathogenetic clarification of rheumatological problems and gives multifarious support to the rheumatologist in differential and activity diagnostics and thus also decisively contributes to early diagnostics and therapy. When the acute-phase-reactions serve for the differentiation of inflammatory-rheumatic diseases and degenerative diseases and for the establishment of the degree of activity, so the ASR further the diagnostic ascertainment of a rheumatic fever, the agglutination tests for proving the rheumatoid factor further the differential diagnosis of the rheumatoid arthritis, the LE-phenomenon and the ANF further the differential diagnosis of the LEV, the proof of cardiac auto-antibodies essentially furthers the diagnostics of carditis, the increase of uric acid the early recognition of gout, the synovial diagnostics at length became necessary for the clarification of clinically unclear mon- or oligoarthritides and the determination of the local activity for the observation and judgment of the course. Notwithstanding the primate of the clinic without an effective laboratory diagnostics a modern rheumatology can no more be performed nowadays. | |
| 368740 | Diagnosis of rheumatic disease. 2. Laboratory tests. | 1979 Mar | Part 1, which begins on page 64, discusses diagnosis of rheumatic disease by radiography. The most popular laboratory tests in rheumatic disease are nonspecific and include those based on the formation of autoantibodies. Rheumatoid factor assays actually are of little diagnostic help in rheumatoid arthritis, but antinuclear antibody tests have become mandatory for identification of systemic lupus erythematosus. Studies based on immune complexes and cell immunity are valuable in specific clinical situations. | |
| 6974913 | [Immunology and joint disease (author's transl)]. | 1981 Oct | The present view is concerned with a number of joint diseases occurring in man and pets, the pathogenesis of which is (partly) immunological. This review is preceded by the discussion of a relevant part of immunology. The diagnostic laboratory procedures dealt with in the paper consist in diagnostic routine tests performed in (medical) clinico-immunological laboratories. With a few exceptions, it appears to be possible to establish a diagnosis of similar diseases in animals using comparable methods. A reliable diagnosis of these joint diseases in pets is not only of importance from the point of view of comparative nosology, but may also revive interest in the animal as a model of these forms of disease. Finally, human so-called seronegative spondylo-arthropathy associated with the presence of particular tissue antigen, is briefly discussed. Similar associations in pets such as dogs should also be studied. | |
| 7229288 | Trapezium implant arthroplasty. Long-term evaluation of 150 cases. | 1981 Mar | Arthritis of the joints at the base of the thumb can be painful and severely disabling, interfering with normal functional activity. The trapezium implant, which acts as a replacement for the removed pathologic bone, must have certain features if it is to be tolerated by the host tissue and be stable and durable. Implant resection arthroplasty of the trapezium, with careful correction of other associated deformities, has resulted in long-term, excellent functional and cosmetic results in this group of cases. | |
| 956390 | Cytotoxic activity of rheumatoid and normal lymphocytes against allogeneic and autologous | 1976 Sep | The possibility that lymphocytes from patients with rheumatoid arthritis (RA) might be sensitized to RA synovial cell antigens was investigated with a 51Cr release cytotoxicity assay. Peripheral blood lymphocytes from rheumatoid and normal donors were tested for cytotoxic activity against their own synovial cells and against allogeneic rheumatoid and nonrhemuatoid synovial cells. In the allogeneic studies, the degree of cytotoxicity was significantly influenced by the age in culture (passage number) of the synovial target cells (P less than 0.001). When the passage number of the target cells was considered in the analysis, rheumatoid lymphocytes were found to have greater cytotoxic activity than normal lymphocytes against young cultures (low passage number) of both RA and non-RA synovial cells (P = 0.0042). Differences in susceptibility to lysis between RA and non-RA synovial cells were more susceptible to both RA and normal lymphocyte-induced lysis than were non-RA synovial cells (P = 0.0048). No evidence of cytotoxicity was detected when lymphocytes from nine RA patients and two osteoarthritis patients were reacted against their own synovial cells. Although the data demonstrated an increased cytotoxic activity of peripheral blood lymphocytes from some RA patients against allogeneic synovial cells, the fact that this reactivity was seen against both non-RA and RA synovial cells and was not demonstrated against autologous synovial cells argues against the presence of an immunospecific response of RA lymphocytes to RA synovial cell antigens. | |
| 6569086 | Elastase activity in serum and synovial fluid of patients with connective tissue disorders | 1984 Oct | Sera and synovial fluids (SF) from patients with connective tissue disorders had significantly lower levels of elastase than sera from healthy controls. Patients with rheumatoid arthritis had significantly lower elastase activity in SF compared with serum. Elastase activity in serial serum samples from patients with systemic lupus erythematosus undergoing plasmapheresis showed some relationship with the clinical condition but little correlation with levels of circulating immune complexes. It was concluded that free elastase in the serum or SF was unlikely to be of much pathological significance in connective tissue disease. | |
| 7425327 | [Prolonged neuromuscular blockade during a D. penicillamine-induced myasthenia (author's t | 1980 | The authors report a D. Penicillamine-induced myasthenia gravis in a patient with rheumatoid arthritis. The disorder was revealed by a postoperative respiratory depression which could be attributed to the aggravation of the neuromuscular blockade by the muscle relaxants. D. Penicillamine-induced myasthenia gravis is now well known. The onset of such an accident after anaesthesia of patient treated with D. Penicillamine is a potential risk. Management of these patients in anaesthesia must be similar to the management of patients with classic myasthenia gravis. | |
| 119858 | Consumption of C3 via the classical and alternative complement pathways by sera and synovi | 1979 Nov | Five sera and four synovial fluids from patients with rheumatoid arthritis were found to contain substances which consumed hemolytic C3 in normal human serum (NHS) and in normal guinea pig serum (NGPS). These fluids were then tested for ability to activate the alternative pathway by incubating them with NHS containing MgEGTA and C4 deficient GPS. All sera and two synovial fluids depleted C3 in these reagents, indicating direct activation by the alternative pathway. Density gradient ultracentrifugation demonstrated C3 fixing activity in some specimens in the greater than 19s regions. These substances may also activate complement similarly in vivo and participate in the development of inflammatory processes associated with this disease. | |
| 3862846 | Production of mononuclear cell factor by mononuclear phagocytes from rheumatoid synovial f | 1985 Jun | Collagenase-and PGE1-stimulating activities (mononuclear cell factor or MCF) have been found in culture supernatants from synovial fluid macrophages (SF-M phi) of patients wih rheumatoid arthritis. The apparent molecular weight of the MCF activity present in SF-M phi supernatants was between 15-20,000 daltons, which is similar to interleukin I. All the SF-M phi supernatants from patients tested showed the MCF activity. Our study presents evidence for MCF production by monocyte-macrophages at the local site of the lesion. | |
| 6362931 | Antibody to streptococcal cell wall peptidoglycan-polysaccharide polymers in seropositive | 1984 Jan | An ELISA has been developed for serum antibodies to streptococcal cell wall peptidoglycan-polysaccharide polymers (PG-GSP). A significantly increased prevalence of serum anti-PG-GSP antibody was found in juvenile chronic arthritis and both seropositive and seronegative rheumatoid arthritis (RA), compared with ankylosing spondylitis, systemic lupus erythematosus, myeloma and healthy controls. Anti-PG-GSP antibody was always of the IgG class and there was no correlation of anti-PG-GSP levels with C reactive protein, rheumatoid factor (RF) or anti-streptolysin O titres. There was no direct cross-reaction of RF with PG-GSP, nor did the presence of IgM-RF significantly interfere with the assay. Examination of paired serum and synovial fluid samples offered no evidence for local production of anti-PG-GSP antibody in synovial tissue. These data are compatible with an increased systemic immunization by bacterial fragments in RA. | |
| 1093200 | Method for differentiation of nonspecific from specfic toxoplasma IgM fluorescent antibodi | 1975 Apr | In a study performed to define the prevalence of false positive toxoplasma IgM-IFA test results in sera containing RF, 8 (19.5%) of 41 sera which were positive for RF were positive in the toxoplasma DT and conventional toxoplasma IFA test. Three of these eight were also positive in the toxoplasma IgM-IFA test and in two, the results were considered to be false positives. Of the 33 sera remaining which were positive for RF but negative in both the DT and conventional IFA test, three were positive in the toxoplasma IgM-IFA test. Of 51 sera from patients with suspected rheumatoid arthritis or other collagen vascular disorders, all of which were negative when tested for RF, none was positive for toxoplasma IgM antibodies in the IgM-IFA test. Sera from 15 adults with the acute lymphadenopathic form of toxoplasmosis and 13 infants with congenital toxoplasmosis were tested for the presence of RF. Whereas none of the sera from the acquired cases had demonstrable RF, two of the congenital cases had RF, and their titers were both 1:320. False positive IgM-IFA test results became negative after treatment of sera with heat-aggregated IgG. In contrast, IgM-IFA test titers in cases of acute congenital or acquired toxoplasmosis were unaffected by this treatment. Thus, treatment with heat-aggregated IgG can be used to differentiate false positive IgM-IFA test titers due to RF from those due to specific IgM toxoplasma antibody. |