Search for: rheumatoid arthritis methotrexate autoimmune disease biomarker gene expression GWAS HLA genes non-HLA genes
| ID | PMID | Title | PublicationDate | abstract |
|---|---|---|---|---|
| 18394179 | Advances in the genetics of rheumatoid arthritis point to subclassification into distinct | 2008 | In the past few years considerable advances have been made in the genetics of susceptibility to rheumatoid arthritis (RA). For decades the HLA-DRB1 alleles were the only extensively replicated genetic factor, but more genetic risk factors have now been identified that predispose to RA. Interestingly, several of the observed genetic variants conferred risk to anticitrulline-peptide antibody (ACPA)-positive RA and two variants may be restricted to ACPA-negative RA, pointing to the need for subclassification of RA. The current manuscript reviews recently identified genetic factors predisposing to ACPA-positive RA and ACPA-negative RA. Additionally, although being scarcely explored, genetic variants affecting the severity of disease course are discussed. | |
| 17765843 | Rheumatoid arthritis. | 2007 Sep | This article reviews rheumatoid arthritis, a chronic disease that primarily targets the joints, its treatment and antirheumatic drugs. | |
| 16798996 | Kudo type-5 total elbow arthroplasty in mutilating rheumatoid arthritis: a 5- to 11-year f | 2006 Jul | We studied 11 patients (14 elbows) with gross rheumatoid deformity of the elbow, treated by total arthroplasty using the Kudo type-5 unlinked prosthesis, and who were evaluated between five and 11 years after operation. Massive bone defects were augmented by autogenous bone grafts. There were no major complications such as infection, subluxation or loosening. In most elbows relief from pain and stability were achieved. The results, according to the Mayo Elbow Performance Score, were excellent in eight, good in five and fair in one. In most elbows there was minimal or no resorption of the grafted bone. There were no radiolucent lines around the stems of the cementless components. This study shows that even highly unstable rheumatoid elbows can be replaced successfully using an unlinked prosthesis, with augmentation by grafting for major defects of bone. | |
| 18717997 | Development of a health care utilisation data-based index for rheumatoid arthritis severit | 2008 | INTRODUCTION: Health care utilisation ('claims') databases contain information about millions of patients and are an important source of information for a variety of study types. However, they typically do not contain information about disease severity. The goal of the present study was to develop a health care claims index for rheumatoid arthritis (RA) severity using a previously developed medical records-based index for RA severity (RA medical records-based index of severity [RARBIS]). METHODS: The study population consisted of 120 patients from the Veteran's Administration (VA) Health System. We previously demonstrated the construct validity of the RARBIS and established its convergent validity with the Disease Activity Score (DAS28). Potential claims-based indicators were entered into a linear regression model as independent variables and the RARBIS as the dependent variable. The claims-based index for RA severity (CIRAS) was created using the coefficients from models with the highest coefficient of determination (R2) values selected by automated modelling procedures. To compare our claims-based index with our medical records-based index, we examined the correlation between the CIRAS and the RARBIS using Spearman non-parametric tests. RESULTS: The forward selection models yielded the highest model R2 for both the RARBIS with medications (R2 = 0.31) and the RARBIS without medications (R2 = 0.26). Components of the CIRAS included tests for inflammatory markers, number of chemistry panels and platelet counts ordered, rheumatoid factor, the number of rehabilitation and rheumatology visits, and Felty's syndrome diagnosis. The CIRAS demonstrated moderate correlations with the RARBIS with medication and the RARBIS without medication sub-scales. CONCLUSION: We developed the CIRAS that showed moderate correlations with a previously validated records-based index of severity. The CIRAS may serve as a potentially important tool in adjusting for RA severity in pharmacoepidemiology studies of RA treatment and complications using health care utilisation data. | |
| 18351134 | [Pediatric rheumatic diseases--per aspera ad astra]. | 2007 | Progress in the field of pediatric rheumatolgy has been extraordinary; subspecialty is accepted as essential, vital, indispensible and distinct from adult rheumatology. It is clear that arthritis in children is more heterogeneous than RA. Although there are similarities between the inflammatory arthritides occuring in adults and children, RA and JIA appear to be distinct phenotypically with exception for the older child with RF-positive polyarticular arthritis. Progress in molecular biology has enabled us to diagnose those children earlier, and treat them more efficaciously with variety of drugs and biologic agents. In recent years a new group of hereditary autoinflammatory disorders has emerged. These rare syndromes are charaterized by recurrent episodes of seemingly unprovoked, intermittent inflammation. In the near future we will be able to distinguish various subtypes of autoimune/autoinflammatory diseases earlier in the course, have a better understanding of the biomarkers and other prognostic factors, and most importantly treat them earlier with extended set of various new exciting drugs and biological therapy. | |
| 16441532 | Impact of a rheumatology expert nurse on the wellbeing of patients attending a drug monito | 2006 Feb | AIM: This paper reports a study to test the hypothesis that consultation with a clinical nurse specialist in a drug monitor clinic has a measurable impact on the well-being of patients with rheumatoid arthritis. METHOD: A single blinded randomized controlled trial was carried out with 71 patients with rheumatoid arthritis who were starting new disease-modifying anti-rheumatic therapy at a district general hospital. Patients were randomized into two groups over a 3-year recruitment period. Intervention group patients were monitored by a rheumatology clinical nurse specialist using Pendelton's framework to assess patient needs alongside safety monitoring. Control group patients were seen by an outpatient staff nurse for safety monitoring only over a 1-year period. The primary outcome measures were the Arthritis Impact Measurement Scales and the Rheumatology Attitude Index. Data were also collected on the Disease Activity Score, number of consultations with healthcare professionals and changes in drug therapy. Data were collected at baseline, 3, 7 and 12 months between 1999 and 2002. RESULTS: The Intervention group had greater change scores than the Control group for the Arthritis Impact Scale, with statistical significance shown at 7 months (P = 0.03). At 12 months the Rheumatology Attitude Index had improved by a mean of 1.8 in the Intervention group and deteriorated by 0.3 in the Control group. Changes in the Disease Activity Score were greater in the Intervention group at all time points, with statistical significance at 12 months (P = 0.048). There was little difference in the number of consultations or changes in drug therapy between the two groups. CONCLUSION: Consultation with an expert rheumatology nurse in a drug monitor clinic may add value in terms of improving patients' perceived ability to cope with the arthritis. | |
| 16913584 | Arthropathy and cutaneous manifestations in a 28-year-old patient with cystic fibrosis. | 2006 Jun | We report on a 28-year-old man with known cystic fibrosis who presented with pain and cutaneous nodules in the elbow joints. His symptoms had appeared episodically in the previous months, they were always self-limiting, and independent of pulmonary exacerbations. A radiograph of the joints was unremarkable. These findings fit well with a special form of CF-related arthritis. As in the case of classical CF arthritis, the treatment to be considered is, in particular, symptomatic administration of non-steroidal anti-inflammatory drugs and possibly glucocorticoids. Also under discussion as a further possibility is the use of antibiotics. Our patient has always refused medication. The condition again proved to be self-limiting. In contrast to the classical form of CF arthritis, the special form is not associated with either joint swelling or local warmth. In the presence of arthritic symptoms in CF patients, consideration must always be given to a hypertrophic pulmonary osteoarthropathy. The latter, however, shows typical radiological changes and is exacerbated by lung infections. The presence of arthritic pathologies in a patient with CF further underscores the fact that CF is a multiorgan morbid condition. | |
| 16951483 | [Autoantigen and molecular chaperone in rheumatoid arthritis--their roles in metabolism of | 2006 Sep | The endoplasmic reticulum chaperone; heat shock protein/rheumatoid arthritis-related antigen (HSP47/RA-A47), in addition to its important intercellular functions for collagen maturation and secretion, has chondrocytes-destructive roles such as induction of endoplasmic reticulum (ER)-stress and metabolic gene expressions result in apoptosis when HSP47/RA-A47 is downregulated. Extracellular HSP47/RA-A47 may act as an autoantigen, but also regulate autoimmune inflammation. It is, therefore, a potential new biologic therapy for rheumatoid arthritis. | |
| 18274813 | Are Thymidylate synthase and Methylene tetrahydrofolate reductase genes linked with methot | 2008 Jun | Methotrexate (MTX) is among the best-tolerated disease-modifying antirheumatic drugs for the treatment of rheumatoid arthritis (RA); major drawbacks of MTX therapy are the large interpatient variability in clinical response and the unpredictable appearance of a large spectrum of side effects. Several studies have demonstrated gene polymorphism that may regulate intracellular methotrexate metabolic pathway enzymes linked to drug efficacy and safety, but the evidence available is not yet conclusive. We decided to run a pilot study to determine the incidence of Methylene tetrahydrofolate (MTHFR; C677T, A1298C) and Thymidylate synthase (TS; 5' UTR repeat, 3' UTR deletion) gene polymorphism in rheumatoid arthritis patients in our community (Indian Asian) and further explore its association with MTX response (efficacy, toxicity). Thirty-four naïve RA patients on supervised MTX therapy and 139 healthy controls were genotyped for A1298C and C677T polymorphism of the MTHFR gene and 5' UTR repeat and 3' UTR deletion polymorphism of the TYMS gene by polymerase chain reaction-restriction fragment length polymorphism. Association, if any, between gene polymorphism and MTX response in RA patients was analyzed. The MTHFR A1298C 'C' allele incidence among RA patients (46%) was significantly higher (chi2 = 4.24, P < 0.05, OR = 1.68). None of the other allele tested showed any association. Although a small sample study, our findings do not suggest a significant association of MTHFR/TS allele/genotype with MTX response in our ethnically distinct Indian (Asian) RA patients. | |
| 18653678 | Views on exercise maintenance: variations among patients with rheumatoid arthritis. | 2008 Sep | BACKGROUND AND PURPOSE: Individuals with rheumatoid arthritis (RA) often have to make changes in exercise behavior in order to gain and sustain health benefits. The purpose of this study was to explore and describe ways of understanding exercise maintenance among individuals with RA who had already started to exercise. PARTICIPANTS: Fourteen women and 4 men with RA of at least 2 years' duration, selected from 4 hospitals or primary health care physical therapy clinics, participated. They had exercised regularly at least twice weekly during the previous 2 months with various levels of support from a physical therapist, and they had attempted to exercise without support outside of the health care environment during the previous year. METHOD: A phenomenographic approach was used to analyze semistructured interviews. A pattern of categories of descriptions was constructed based on the participants' conceptions and ways of understanding the phenomenon of exercise maintenance. RESULTS: Five categories were identified: "external control," "sticks and carrots," "a joint venture," "the easy way," and "on one's own terms." The categories became clear by elucidating 2 aspects related to exercise maintenance: (1) the way the participants talked about and experienced the type of support needed and (2) personal factors. DISCUSSION AND CONCLUSION: The results highlight the importance of finding the proper context and support for each patient's needs. Furthermore, preparing for exercise maintenance by strengthening the patient's beliefs in his or her ability to exercise in different settings, by discussing pros and cons of exercise, and by exploiting the patient's ability to adapt and continue exercise outside of the health care environment might be valuable. | |
| 16530013 | A gut feeling for joint inflammation - using coeliac disease to understand rheumatoid arth | 2006 Apr | Major advances have been made in the molecular understanding of coeliac disease, initiated by the identification of intestinal gluten-reactive T cells. It is now clear that this common intestinal disorder, which is precipitated by the ingestion of wheat gluten, is mediated by DQ2-restricted T cells specific for gluten peptides modified by transglutaminase 2, the same enzyme that is targeted by disease-specific autoantibodies. Interestingly, many of the important features identified in coeliac disease, including HLA association, target organ T-cell infiltration, disease-specific autoantibodies and the distinct targeting of in vivo modified antigens, are also present in rheumatoid arthritis. The experiences from coeliac disease should therefore help identify disease-relevant T-cell epitopes in rheumatoid arthritis. | |
| 18590859 | Surgical options for the arthritic elbow. | 2008 May | Elbow arthritis is a debilitating condition manifesting as a painful, stiff elbow. Surgical treatment is based on disease etiology, severity of degeneration, and patient age. Rheumatoid elbows with mild to moderate disease benefit from arthroscopic debridement and synovectomy, whereas capsular release and ulnohumeral arthroplasty can relieve painful elbows with early posttraumatic arthritis and osteoarthritis. Age and functional requirements are treatment determinants for moderate to severe arthritis. Rheumatoid, low-demand, and elderly patients are candidates for total elbow replacement; posttraumatic and osteoarthritic elbows in younger patients with considerable functional demands are treated with interpositional arthroplasty. Total elbow allografts and elbow arthrodeses are considered only in salvage situations. | |
| 16460297 | Early combination disease modifying antirheumatic drug treatment for rheumatoid arthritis. | 2006 Feb 6 | Most people presenting with rheumatoid arthritis today can expect to achieve disease suppression, can avoid or substantially delay joint damage and deformities, and can maintain a good quality of life. Optimal management requires early diagnosis and treatment, usually with combinations of conventional disease modifying antirheumatic drugs (DMARDs). If these do not effect remission, biological DMARDs may be beneficial. Lack of recognition of the early signs of rheumatoid arthritis, ignorance of the benefits of early application of modern treatment regimens, and avoidable delays in securing specialist appointments may hinder achievement of best outcomes for many patients. Triage for recognising possible early rheumatoid arthritis must begin in primary care settings with the following pattern of presentation as a guide: involvement of three or more joints; early-morning joint stiffness of greater than 30 minutes; or bilateral squeeze tenderness at metacarpophalangeal or metatarsophalangeal joints. | |
| 18766127 | Effects of methotrexate use in a patient with rheumatoid arthritis and multiple sclerosis. | 2008 Aug | Rheumatoid arthritis (RA) and multiple sclerosis (MS) share similar pathophysiologic processes but coexistence of both diseases in the same patient has rarely been described. We describe the case of a 32 year old woman with rheumatoid arthritis treated with 12.5 mg of methotrexate once a week and 1 mg folic acid who developed paresthesias of her upper and lower extremities. Three years later, she acutely developed 6th nerve palsy, gait imbalance and urinary urgency and a diagnosis of multiple sclerosis was made. The use of methotrexate, though effective in controlling her rheumatoid arthritis, did not influence the development or progression of her multiple sclerosis. Although RA and MS may coexist in the same patient, treatment of one disease may have no influence on the clinical course of the other. Thus, the mechanism by which methotrexate suppresses disease activity in RA but not in MS despite both being T-cell mediated autoimmune diseases requires further investigative studies. | |
| 17042012 | High disease activity scores predict the need for additional health services in patients o | 2006 Mar | OBJECTIVE: To determine whether we meet perceived need, in terms of appropriate supportive health services (physiotherapy, occupational therapy, chiropody and footwear, surgery, education and information), of patients aged 60 years and over with rheumatoid arthritis (RA). DESIGN: A cross-sectional survey. PARTICIPANTS: 123 patients attending rheumatology outpatient clinics. RESULTS: The response rate was 82% (99/123). Of the respondents 78% had one or more perceived needs. Respondents were more likely to express a need for chiropody or footwear (46%), education about RA (29%), or physiotherapy (22%) than for occupational therapy (7%) or surgery (6%). Further analysis compared this group with the 'non-needy' group. There was a correlation between high disease activity scores and high anxiety scores and greater perceived need for additional health services. CONCLUSION: There was significant unmet demand for chiropody and footwear, education about RA, physiotherapy, occupational therapy and surgery. It is possible that strategies to reduce anxiety and improve control of active inflammatory disease may reduce demand for supportive services in certain patients. | |
| 19035420 | Efficacy of wrist working splints in patients with rheumatoid arthritis: a randomized cont | 2008 Dec 15 | OBJECTIVE: To investigate the efficacy of wrist working splints after a period of splinting in patients with rheumatoid arthritis (RA). METHODS: We performed a 4-week randomized controlled trial among 33 RA patients with wrist arthritis. Patients were randomly allocated to the splinting group (n = 17) or the control group (n = 16). Patients in the splinting group received a prefabricated wrist working splint and were instructed to use this splint as much as possible during the day. The primary outcome measure was average wrist pain during the past week, measured using a visual analog scale (VAS). Secondary outcome measures were grip strength and functional ability. The latter was measured using the Disabilities of the Arm, Shoulder, and Hand questionnaire and the short version of the Sequential Occupational Dexterity Assessment. Measurements were performed at baseline and after 4 weeks. Performance tests were performed without splint. Differences in change scores between the splinting and the control group were analyzed using analysis of covariance. To indicate the magnitude of the treatment effects, effect sizes were calculated. RESULTS: A large and highly significant treatment effect on wrist pain was found. VAS pain scores decreased by 32% in the splinting group and increased by 17% in the control group. Small and nonsignificant treatment effects were found with regard to nonsplinted grip strength and functional ability. CONCLUSION: Prefabricated wrist working splints are highly effective in reducing wrist pain after 4 weeks of splint wearing in RA patients with wrist arthritis. | |
| 18240220 | Reactivity of serum antibodies to the keratin layer of rat esophagus in patients with rheu | 2008 Feb | Serum antibodies reactive with the keratin layer of rat esophagus (AKA) were found in 46 of 80 (57.5%) rheumatoid arthritis (RA) patients. In contrast, AKA were present in only 7 of 82 (9.5%) patients with other types of rheumatic disorders and in 2 of 47 (4.2%) healthy subjects. AKA were not specific for RA, however, because in the former group, AKA were present in 4 of 20 (20%) systemic sclerosis patients and in 3 of 12 (25%) ankylosing spondylitis patients. AKA belong predominantly to the IgG class and are complement fixing. Although found in some RA joint fluids, AKA were not selectively concentrated in the joint fluid. Absorption of RA serum with type I human collagen or with human epidermal keratin did not remove AKA activity. The frequency of AKA in RA patients both negative and positive for DR4 was equal. There was no relationship between the frequency of AKA and the occurrence of other serum autoantibodies such as antibodies to intermediate filaments, smooth muscle, and nuclear antigens. Serum antibody reactive with human stratum corneum found in patients with psoriatic arthritis was shown to be different from AKA. Rabbit antiserum to human keratin did not inhibit the reaction of AKA against the keratin layer of rat esophagus. Autoimmunity to structural proteins including collagen, vimentin intermediate filaments, smooth muscle antigens, and keratin is a characteristic feature of RA. | |
| 17021669 | Influence of intraarticular corticosteroid administration on serum cytokines in rheumatoid | 2007 May | Though the efficacy of intraarticular (IA) corticosteroid administration in the therapeutic management of rheumatoid arthritis (RA) has been well documented, its immunomodulatory effects have not been defined. Categorization of these effects is important to develop safe derivative therapeutic strategies with a more targeted mechanism of action as they relate to the pathophysiology of RA. We describe here a broad spectrum immune response to inflammation as evidenced by rapid transient systemic inhibitory effects on key inflammatory regulators induced by the effects of IA administration of triamcinolone acetonide in a case of active RA who failed to respond to methotrexate. | |
| 17206398 | Rheumatoid arthritis is linked to Proteus--the evidence. | 2007 Jul | Rheumatoid arthritis (RA) is a chronic inflammatory arthritic and potentially disabling condition, mainly affecting women of middle age and having characteristic clinical features. Various microbial agents were implicated in the causation of RA. Extensive literature based on the results of various genetic, microbiological, molecular, and immunological studies carried out by independent research groups supports the role of Proteus mirabilis bacteria in the etiopathogenesis of RA. New diagnostic markers and criteria and the use of a novel therapeutic protocol in the form of antibiotic and dietary measures are suggested to be used together with current treatments in the management of RA. Prospective longitudinal studies with the use of antimicrobial measures in patients with RA are required to establish the therapeutic benefit of this microbe-disease association. | |
| 17894000 | Precocious atherosclerosis in rheumatoid arthritis: role of traditional and disease-relate | 2007 Jun | The risk of cardiovascular (CV) disease increases in patients with rheumatoid arthritis (RA). This is due to a number of different triggers including traditional and disease-related factors. Among established risk factors for CV disease, smoking may exert a more dangerous effect on arterial wall in RA than in the general population by a synergic effect with inflammatory processes of the disease. Although persistent inflammation and immune dysregulation of RA may contribute to favor other well-known CV risk factors, such as dyslipidemia, it is now clear that the disease itself represents an independent risk factor for CV disease by the action of RA chronic inflammatory process as well as humoral and cell-mediated immune mechanisms. There is evidence that CV risk is associated with severity and extension of the disease and it is of interest the fact that the presence of circulating anticyclic citrullinated peptide antibodies appears to be associated with stronger evidence of subclinical atherosclerosis in RA. |
