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ID PMID Title PublicationDate abstract
24461540 Polymyalgia rheumatica--diagnosis and classification. 2014 Feb Polymyalgia rheumatica is the most common inflammatory rheumatic disease of the elderly, and shares many pathogenetic and epidemiological features with giant cell arteritis. The typical symptoms are bilateral aching of the shoulder girdle, associated with morning stiffness. The neck and hip girdle may also be involved. The diagnosis of polymyalgia rheumatica is made primarily on clinical grounds. There is no single diagnostic test, but sets of diagnostic or classification criteria have been suggested by several groups of investigators, based on the typical clinical presentation and laboratory evidence of acute-phase reaction. Other conditions that may mimic polymyalgia rheumatic, such as elderly-onset rheumatoid arthritis, must be excluded by appropriate testing and close monitoring of the disease course. Glucocorticoids at low doses (15-20 mg prednisone per day initially) are the mainstay of treatment.
24706241 Angioedema as a prodrome of rheumatoid arthritis exacerbation. 2014 Apr Angioedema has not been associated with rheumatoid arthritis. However, this case report demonstrates that it can be the leading presentation of an exacerbation of rheumatoid arthritis. This cae report is important for rheumatologists and immunologists who see patients with rheumatoid arthritis and angioedema, respectively, so they recognize this presentation.
25649180 Demographic features of patients with rheumatoid arthritis in kosovo. 2014 Dec INTRODUCTION: Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory illness characterized by polyarthritis of small and large joints which in the course of time may progress to disability. MATERIAL AND METHODS: In our prospective study were included 951 patients (females 730, and males 221 respectively) with an average age 51.3 year old, diagnosed with RA in accordance with ACR-EULAR/2010 criteria. The purpose of the paper is to investigate gender, age, group age by gender, level of education, residing place, nationality, religion, social condition, marital status, and vocation in our patients. Statistical processing has been carried out with program SPSS 20.0, SigmaStat 2.03, SigmaPlot 2000, MedCalc and Excel 2010. Most present group age was 40 - 49 year old with difference in distribution based on gender. RESULTS: The largest number of them had completed secondary education, most of them originated from rural areas, were farmers by vocation and housewives. The database created by this survey can serve for building the RA patients' national registry. This registry can serve for further researches and planning the management of RA as a systemic rheumatic disease that has an immense social, economic and health impact. Largest portion of RA patients were farmers and housewives respectively (38% and 32.2% respectively). Vocations such as: retail sellers, workers in administration, education, factory, maintenance, and artisan workers had similar incidence in both genders that ranged from 9.7% to 6.2%, whereas these vocations among males ranged from 11.3% to 2.7%.
24037551 Orthopedic surgery in rheumatoid arthritis in the era of biologic therapy. 2013 Nov OBJECTIVE: To analyze sociodemographic and clinic-related factors associated with the use of orthopedic surgical procedures in rheumatoid arthritis (RA), focusing on the potential role of new biologic therapies. METHODS: A retrospective medical record review was performed in a probability sample of 1272 patients with RA from 47 units distributed in 19 Spanish regions. Sociodemographic and clinical features, use of drugs, and arthritis-related joint surgeries were recorded following a standardized protocol. RESULTS: A total of 94 patients (7.4%) underwent any orthopedic surgery during their disease course, with a total of 114 surgeries; 47 (41.2%) of these surgeries were total joint replacement (TJR). The median time to first orthopedic procedure was 7.9 years from the onset of RA symptoms, and the rate of orthopedic surgery (excluding TJR) was 4.5 procedures per 100 person-years from the beginning of RA, while the rate of TJR was 2.25 interventions per 100 person-years. A higher risk of undergoing an orthopedic surgical procedure was associated with taking nonsteroidal antiinflammatory drugs (NSAID) in the previous 2 years, female sex, longterm disease, and the presence of extraarticular complications. The risk factors for undergoing a TJR were being old, having a longterm disease, and taking biologic therapies. CONCLUSION: In the era of biologics, our national audit found a low percentage of patients who underwent orthopedic surgery, probably reflecting a thorough management of the RA. Sociodemographic factors, longterm RA, extraarticular complications, and NSAID were associated with orthopedic surgery.
23981750 Remission in rheumatoid arthritis by different criteria does not converge over the inflamm 2013 Jun OBJECTIVE: Remission is an ideal target in the management of rheumatoid arthritis (RA). We compared American College of Rheumatology (ACR) 1981 preliminary definition of remission, European League Against Rheumatism (EULAR) disease activity score of 28 joints - C-reactive protein (DAS28 (3)-CRP) and DAS28 (3)-ESR (erythrocyte sedimentation rate) and newer ACR/EULAR remission criteria from 2011. We assessed the agreement between these definitions using kappa statistics in a real-time clinical scenario. MATERIALS AND METHODS: This is a cross sectional study in which 460 patients' charts were reviewed. Their data on tender and swollen joint counts, visual analogue scale of patient global assessment (Pt GA), ESR and CRP were retrieved. One hundred patients who fulfilled one of the remission criteria and had all the required five variables were selected and they were categorized into remission using all the four definitions. RESULTS: Only one case out of 100 fulfilled all four remission criteria. Among 100 cases: ACR 1981 classified six in remission; ACR/EULAR 2011, eight; DAS28 (3)-ESR, 24; and DAS28 (3)-CRP classified 100 patients in remission. A substantial number of patients continued to have features suggesting persisting active inflammation, despite being categorized into remission. A major portion of disagreement was in ESR and CRP. The value spread of all clinical parameters such as swollen joint count, tender joint count and Pt GA had no significant difference in the patients classified as being in remission. CONCLUSION: The DAS28 (3)-CRP overestimated remission compared to all other criteria. Disagreement was more in laboratory inflammatory parameters. A uniform definition of remission is needed.
26010598 Clinical profile of 266 Filipino patients with rheumatoid arthritis included in the rheuma 2015 May AIM: To describe Filipino patients with rheumatoid arthritis (RA) entered in the Rheumatoid arthritis database and registry (RADAR) of the Philippine General Hospital. METHODS: Cases entered to RADAR from 2010-2012 were included. All fulfilled the 1987 American College of Rheumatology criteria for classification of RA. Included cases gave written infomed consent. Data extracted were demographics, clinical presentation, laboratory tests, treatment and disease course. Means and proportions were used for population characteristics. RESULTS: Two hundred and sixty-six cases were included. Mean age was 44 years, with 9 : 1 female preponderance and mean diagnosis time of 5 years. There was symmetrical polyarthritis with high tender and swollen joint count and mean Disease Activity Score of 28 joints, erythrocyte sedimentation rate of 5.27 (3.39, 8.13). Rheumatoid factor was positive in 2/3 of cases. Hypertension, tuberculosis and diabetes were important co-morbidities. Treatment included prednisone, non-steroidal anti-inflammatory drugs and methotrexate. At 12 months of treatment, evaluable cases (< 20%) showed improvement from high to moderate disease activity. Methotrexate average dose was 8.6 mg/week. Nine cases received biologic agents. Factors affecting treatment included access to rheumatology centers, low socioeconomic status, presence of co-morbid diseases and treatment adverse events. CONCLUSION: This study reports a cohort of Filipino RA patients seen in a government arthritis unit whose disease characteristics are similar to what is reported worldwide. This cohort differs from most studies in having a high female to male ratio, a long delay in diagnosis, and high attrition rate. Mean methotrexate dose was low and there was less access to biologic disease-modifying anti-rheumatic drugs.
23043846 The excess burden of rheumatoid arthritis in Ontario, Canada. 2013 Jan OBJECTIVES: The purpose of this study was to estimate the excess burden of RA in Ontario, the largest province in Canada. METHODS: The records of all adult Ontarians who participated in the Canadian Community Health Survey (CCHS) cycle 1.1 (2000/2001) and provided consent to data linkage were linked to the Ontario Health Insurance Program (OHIP) physician claims database and the Discharge Abstract Database (DAD) In-Patient (i.e. hospitalisation) and Day-Procedure databases. RA individuals (n=233) were identified using CCHS 1.1 and the physician claims database. A control group matched by age, gender and rural/urban status was created with three controls for one case (n=699). Socio-demographic variables, medical characteristics, health-related quality of life (HRQoL) and one-year physician services, hospitalizations and day procedures costs were determined for the RA and non-RA groups. Regression techniques were used to identify predictors of medical characteristics, utility and cost data. RESULTS: The mean age of the population was 59 years and 76% were female. Compared to the matched control group, individuals with RA were statistically more likely to be obese, less educated, physically inactive and have a lower income. RA individuals also reported a statistically higher number of comorbidities and a lower HRQoL. Although no statistical differences were observed between the RA and non-RA groups for the costs associated with hospitalisations, the physician ($1,015 vs. $624, respectively) and day procedure ($102 vs. $51, respectively) costs were statistically higher among RA individuals. CONCLUSIONS: These results indicate that the human and economic burden of RA in Ontario is considerable.
25716728 Experimental models of arthritis in which pathogenesis is dependent on TNF expression. 2014 Dec Rheumatoid arthritis (RA) is an autoimmune inflammatory disease characterized by joint damage as well as systemic manifestations. The exact cause of RA is not known. Both genetic and environmental factors are believed to contribute to the development of this disease. Increased expression of tumor necrosis factor (TNF) has been implicated in the pathogenesis of RA. Currently, the use of anti-TNF drugs is one of the most effective strategies for the treatment of RA, although therapeutic response is not observed in all patients. Furthermore, due to non-redundant protective functions of TNF, systemic anti-TNF therapy is often associated with unwanted side effects such as increased frequency of infectious diseases. Development of experimental models of arthritis in mice is necessary for studies on the mechanisms of pathogenesis of this disease and can be useful for comparative evaluation of various anti-TNF drugs. Here we provide an overview of the field and present our own data with two experimental models of autoimmune arthritis - collagen-induced arthritis and antibody-induced arthritis in C57Bl/6 and BALB/c mice, as well as in tnf-humanized mice generated on C57Bl/6 background. We show that TNF-deficient mice are resistant to the development of collagen-induced arthritis, and the use of anti-TNF therapy significantly reduces the disease symptoms. We also generated and evaluated a fluorescent detector of TNF overexpression in vivo. Overall, we have developed an experimental platform for studying the mechanisms of action of existing and newly developed anti-TNF drugs for the treatment of rheumatoid arthritis.
23667587 Impact of rheumatoid arthritis disease activity test on clinical practice. 2013 BACKGROUND: Variability exists in the assessment of disease activity in rheumatoid arthritis (RA) patients that may affect quality of care. OBJECTIVES: To measure the impact on quality of care of a Multi-Biomarker Disease Activity (MBDA) test that quantitatively assesses RA disease activity. METHODS: Board-certified rheumatologists without prior experience with the MBDA test (N = 81) were randomized into an intervention or control group as part of a longitudinal randomized-control study. All physicians were asked to care for three simulated RA patients, using Clinical Performance and Value (CPV™) vignettes, in a before and after design. CPV™ vignettes have been validated to assess the quality of clinical practice and identify variation in care. The vignettes covered all domains of a regular patient visit; scores were determined as a percentage of explicit predefined criteria completed. Three vignettes, representing typical RA cases, were administered each round. In the first round, no physician received information about the MBDA test. In the second round, only physicians in the intervention group were given educational materials about the test and hypothetical test results for each of the simulated patients. The outcome measures were the overall quality of care, disease assessment and treatment. RESULTS: The overall quality scores in the intervention group improved by 3 percent (p = 0.02) post-intervention compared with baseline, versus no change in the control group. The greatest benefit in the intervention group was to the quality of disease activity assessment and treatment decisions, which improved by 12 percent (p<0.01) compared with no significant change in the control group. The intervention was associated with more appropriate use of biologic and/or combination DMARDs in the co-morbidity case type (p<0.01). CONCLUSIONS: Based on these results, use of the MBDA test improved the assessment and treatment decisions for simulated cases of RA and may prove useful for rheumatologists in clinical practice.
23666599 RAHelp: an online intervention for individuals with rheumatoid arthritis. 2013 Oct OBJECTIVE: To test an intervention for improving self-management in rheumatoid arthritis (RA) using an online, cognitive-behavioral, self-management group program (RAHelp), with weekly telephone support. METHODS: A 2-group, randomized study design was used to compare an intervention for RA versus a waiting-list control condition. The intervention used a secure web site (RAHelp.org) to provide a 10-week program with weekly educational modules for improving self-efficacy in self-management of RA, plus tools for group interaction. Weekly telephone contacts were made to encourage use of program tools and apply newly learned skills. A nationwide convenience sample of 106 adult participants (mean age 50 years, 93% women) was recruited primarily through online advertisements. Main outcome measures included the Arthritis Impact Measurement Scales 2 (affective, physical, role, social, and pain/symptom components), Arthritis Self-Efficacy Scale (ASES), Center for Epidemiologic Studies Depression Scale, Quality of Life Scale (QLS), Rapid Assessment of Disease Activity in Rheumatology, Social Provisions Scale, and University of California, Los Angeles Loneliness Scale 3. RESULTS: Group differences with large and moderate effect sizes (ES) were found immediately postintervention for self-efficacy (ASES; ES 0.92, P = 0.00001) and quality of life (QLS; ES 0.66, P = 0.003), respectively. At 9 months postintervention, differences in self-efficacy (ASES; ES 0.92, P = 0.00001) and quality of life (QLS; ES 0.71, P = 0.004) remained robust. CONCLUSION: RAHelp appears to have beneficial effects in terms of self-efficacy and quality of life among individuals with RA who are willing to use an online service format.
24574899 The mediating role of dysfunctional coping in the relationship between beliefs about the d 2014 AIM: Rheumatoid arthritis is one of the most severe chronic diseases. In many cases it leads to disability and results in a decreased quality of life and increased levels of anxiety and depression. The problem that needs to be addressed is the following: which mental processes lead to increased levels of depression in patients with rheumatoid arthritis? METHODS: 210 patients with rheumatoid arthritis hospitalized in rheumatology wards took part in the research. They filled in illness perception questionnaires (IPQ-R) and questionnaires for testing strategies of handling stress (Mini-COPE) and the level of depression (CES-D). RESULTS: The observed correlation coefficients indicate that several elements of the perception of one's disease moderately contribute to a high level of depression. Moreover, frequent use of dysfunctional coping strategies contributed to high levels of depression. Dysfunctional coping was moderately linked to depression. CONCLUSION: The conducted analyses confirmed the links between the beliefs about the disease and levels of depression and showed that the use of dysfunctional coping strategies mediates the relationship between the following elements of the representation of the disease: illness coherence, emotional representation, psychological attribution, risk factors, and the level of depression.
24340522 Osteoporosis in rheumatoid arthritis. 2013 Apr Osteoporosis (OP) is a disease of great medical and social importance and it is reported frequently and precociously in rheumatoid arthritis (RA) patients. MATERIAL AND METHODS: A retrospective study was conducted on a random sample of 180 patients admitted in the period 2011-2012 to the Rheumatology Clinic of the lasi Rehabilitation Hospital. The patients were diagnosed with RA and osteoporosis and some clinical and biological parameters were analyzed. Patients were divided into two groups for a comparative study: group I--seropositive = 115 cases (63.89%); group II-- seronegative = 65 cases (36.11%). RESULTS AND DISCUSSION: The 180 patients diagnosed with RA and osteoporoses were randomized into other two groups. The serum rheumatoid factor (RF) in RA and osteoporosis patients was determined by Latex and Waaler Rose reaction. The radiological examination showed that 23.47% of patients in group I and 9.23% of patients in group II have experienced at least one fracture. DXA (Dual X-Ray Absorptiometry) testing showed a value of <-3.5 in group I (13,04%) and in group II ( 9.23%), these results indicating a high risk of fracture, particularly in group I (seropositive). CONCLUSIONS: The results confirm that RA patients are at increased risk ofosteoporosis, and the additional risk of disability and serious socioeconomic implications negatively affect the prevention and development of the disease.
23661495 Long-term outcome of rheumatoid arthritis defined according to the 2010-classification cri 2014 Feb OBJECTIVE: The 2010 American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) criteria for rheumatoid arthritis (RA) have been thoroughly studied for the test characteristics but it is unclear whether '2010 RA' has a different phenotype than '1987 RA' when assessing the severity of the disease course. Therefore this study compared two long-term disease outcomes. METHODS: 1502 early arthritis patients that had no other diagnoses than RA or undifferentiated arthritis (UA) were studied on fulfilling the 1987 ACR criteria, 2010 criteria or both. The severity of joint damage was studied with yearly radiographs over 7 years. Achieving disease-modifying anti-rheumatic drug (DMARD)-free sustained remission was assessed over 10-years follow-up. Multivariate normal regression and Cox-proportional hazard regression were used, adjusting for age, gender and treatment. RESULTS: 550 patients fulfilled the 1987 criteria, 788 patients the 2010 criteria and 489 both criteria sets. Patients fulfilling the 2010 criteria developed less severe radiological joint damage (p=0.023) and achieved DMARD-free sustained remission more often (HR=1.18 (0.93-1.50)) than patients fulfilling the 1987 criteria, though the latter was not statistically significant. All 1987+2010- patients were anti-citrullinated peptide antibody (ACPA)-negative. When also applying the radiologic criterion of the 2010-criteria, half of the 1987+2010- patients became 2010 criteria positive, but results on the long-term outcome remained similar. CONCLUSIONS: '2010 RA' has a milder disease course than '1987 RA'. This may have important implications for basic scientific studies and clinical trials in RA.
23414961 Upper cervical instability associated with rheumatoid arthritis: what to 'know' and what t 2013 Dec This case report describes a patient who presented with cervical spinal pain and headaches associated with atlanto-axial subluxation (AAS) secondary to rheumatoid arthritis (RA). For physiotherapists, especially less experienced clinicians, the significant risks associated with using manual assessment and treatment techniques in such a patient require careful consideration right at the start of a consultation. The focus of the case is therefore on the recognition of AAS in this patient with RA, highlighting the clinical findings that alert clinicians to this possibility and explaining the requisite knowledge and skills required to safely and effectively manage this patient. The use of screening tools to help clinicians identify possible RA in its pre-diagnosis stage and the clinical signs and symptoms that raise the index of suspicion for AAS, are discussed. The relevant contraindications and precautions associated with manual treatments directed at the upper cervical spine, and which may have potentially serious negative consequences, including quadriplegia and mortality, are addressed. Finally, the implications for the use of manual assessment and treatment of patients with RA and co-morbid AAS are addressed.
24661635 Two elderly cases of familial mediterranean fever with rheumatoid arthritis. 2018 Oct Familial Mediterranean fever (FMF) is a genetic autoinflammatory disorder that usually develops before 20 years of age and is characterized by periodic fever with serositis and arthritis. Both FMF and rheumatoid arthritis (RA) involve arthritis; however, their coexistence is rare. We describe two RA patients with an MEFV mutation in exon 2, who were diagnosed with FMF at an age of over 50 years. We also discuss the possibility that MEFV mutations could modulate RA disease activity.
23639595 Concordance between clinical and ultrasound findings in rheumatoid arthritis. 2013 Dec BACKGROUND: Clinical joint examination is less time-consuming than ultrasound in rheumatoid arthritis. Knowledge of clinical and ultrasound concordance of joints groups could help in selecting joints for a best ultrasonographic assessment. OBJECTIVE: To evaluate concordance between clinical examination and ultrasound of joints in a heterogeneous group of patients with rheumatoid arthritis. METHOD: Forty patients were included in a prospective, transversal, single-center study, whatever disease activity, duration or treatment. In each patient, 40 joints were evaluated for a total of 1600 joints. Synovitis was scored using clinical examination, B-mode, power Doppler and both B-mode and power Doppler. Concordance between swelling joint by clinical examination, synovitis thickening by B-mode (grade 1 or higher) and inflammation by power Doppler (grade 1 or higher) was assessed by computing the kappa coefficient. RESULTS: Clinical joint examination and ultrasound concordance was very low at the shoulders and metatarsophalangeal joints (κ < 0.1) and was low at wrists (κ: 0.23 to 0.30). B-mode and power Doppler found 2.4 and 1.4 more synovitis than swollen joint count using clinical examination and up to 30 times more at metatarsophalangeal joints. Concordance was strong at tibio-talar joints (κ: 0.65 to 0.82) and moderate at others joints sites (κ: 0.4 to 0.6). CONCLUSION: Assessment of a heterogeneous group showed that ultrasound adds information to clinical examination, most notably at the shoulders, wrists and metatarsophalangeal joints. Concordance was moderate to strong at other joint sites.
23401491 Potential classification criteria for rheumatoid arthritis after two years: results from a 2013 Aug OBJECTIVE: To determine agreement among the 2010 American College of Rheumatology (ACR)/European League Against Rheumatism (EULAR) criteria, a diagnosis of rheumatoid arthritis (RA) by a rheumatologist, and other criteria previously used to classify arthritis. METHODS: We used a nationwide longitudinal prospective cohort of patients with recent-onset arthritis. After 2 years, the patients were classified as receiving disease-modifying antirheumatic drugs (DMARDs), having synovitis, having joint erosions typical of RA, having a rheumatologist diagnosis of RA with >50.0% certainty, having a no better alternative diagnosis with >50.0% certainty, and having a diagnosis of RA using the 1987 ACR criteria and the 2010 ACR/EULAR criteria. Agreement among these criteria was assessed based on Cohen's kappa coefficient, where ≥0.80 = excellent, 0.60-0.79 = good, 0.40-0.59 = moderate, and <0.40 = poor. RESULTS: Of the 692 evaluated patients, 544 (78.6%) had persistent arthritis (defined as synovitis, ongoing DMARD treatment, or both) after 2 years. Among these 544 patients, 496 (91.2%) were receiving DMARDs. Agreement among all criteria was poor (estimated κ = 0.09-0.43), except when including a rheumatologist diagnosis of RA with >50.0% certainty or a no better alternative diagnosis with >50.0% certainty (estimated κ = 0.69-0.81). The strongest associations with a rheumatologist diagnosis of RA with >50.0% certainty were the 2010 ACR/EULAR criteria and the combination of no better alternative diagnosis, persistent arthritis, 1987 ACR criteria, and positive anti-citrullinated protein antibody. CONCLUSION: Rheumatologist diagnosis of RA with >50.0% certainty after 2 years agreed well with the 2010 ACR/EULAR criteria or a combination of items including no better alternative diagnosis, confirming high value as classification criteria after 2 years of followup.
24006166 [Chronic inflammation and atherosclerosis]. 2013 Sep The increasing gain of knowledge regarding the mechanistic details of the pathogenesis of chronic inflammatory diseases e. g. of rheumatic origin, chronic viral infections and atherosclerosis have revealed in conjunction with detailed insights in acute inflammation interesting similarities and differences. Cytokines such as IL-1 and tumour necrosis factor-α are proximal components of inflammatory cascades of systemic mediators activating the endothelium which leads to an endothelial dysfunction and moreover alter the balance within lymphocytic subpopulations containing distinct arsenals of secretory mediators such as interferons, interleukins and chemokines. Proinflammatory lymphocyte subtypes are TH1 und TH17 cells whereas Treg and TH2 cells are anti-inflammatory opponents. Since several years, interleukin-1- and TNF-antagonists have expanded the spectrum of drugs against rheumatic diseases and are currently studied in the setting of cardiovascular prevention with positive results on surrogate parameters. On the other hand efforts are undertaken to test the hypothesis if the pleiotropic effects of statins may have a positive influence on rheumatoid arthritis.
22930442 Anatomy of hallux valgus in rheumatoid arthritis: radiographic analysis using a two-dimens 2013 Jul OBJECTIVE: The purpose of this study is to compare the anatomy of rheumatoid hallux valgus with that of idiopathic hallux valgus from the standpoint of joint-preserving surgery. METHODS: One hundred forty-eight feet of 81 rheumatoid patients were included. Feet with idiopathic hallux valgus and normal feet were compared as controls. Weight-bearing dorsoplantar radiographs of the feet were taken of each patient. A two-dimensional coordinate system was defined on the radiographic image, and 19 anatomic points of the forefoot were measured. RESULTS: In rheumatoid hallux valgus, the first metatarsal head shifted medially as hallux valgus angle increased, which was similar to the deformity of idiopathic hallux valgus. Proximal deviation of the tips of the lesser toes, caused by clawing and dislocations of the metatarsophalangeal joints, occurred in rheumatoid hallux valgus. Specifically the tips of the second toes in rheumatoid hallux valgus were located more proximally than those in idiopathic hallux valgus irrespective of the severity of hallux valgus. CONCLUSIONS: Corrective osteotomy of the first metatarsal is a reasonable procedure for rheumatoid hallux valgus. Additionally, correction of the second toe deformity to make a stable lateral support on the hallux may be another important factor for successful joint-preserving surgery.
23188915 A preliminary investigation of cognitive function in rheumatoid arthritis patients on long 2013 Oct Some studies suggest that cognitive function is impaired in rheumatoid arthritis patients. One possible influence may be commonly used rheumatoid arthritis treatment, methotrexate. This study examined cognitive function in long-term methotrexate users with rheumatoid arthritis and, using a 24-hour pre- and post-methotrexate dose administration, investigated whether there may be transient cognitive function changes. Rheumatoid arthritis patients (n = 35) were assessed immediately before taking methotrexate and 24 hours later. Low and high methotrexate dose groups were then compared. Cognitive performance was unchanged across two assessment points and was within the normal range, although lower in high methotrexate dose group.