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Bombardier C, Hazlewood GS, Akhavan P, Schieir O, Dooley A, Haraoui B, Khraishi M, Leclercq SA, Légaré J, Mosher DP, Pencharz J, Pope JE, Thomson J, Thorne C, Zummer M, Gardam MA, Askling J, Bykerk V. Canadian Rheumatology Association recommendations for the pharmacological management of rheumatoid arthritis with traditional and biologic disease-modifying antirheumatic drugs: part II safety. J Rheumatol 2012; 39:1583-602. [PMID: 22707613 DOI: 10.3899/jrheum.120165] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE The Canadian Rheumatology Association (CRA) has developed recommendations for the pharmacological management of rheumatoid arthritis (RA) with traditional and biologic disease-modifying antirheumatic drugs (DMARD) in 2 parts. Part II, focusing on specific safety aspects of treatment with traditional and biologic DMARD in patients with RA, is reported here. METHODS Key questions were identified a priori based on results of a national needs-assessment survey. A systematic review of all clinical practice guidelines and consensus statements regarding treatment with traditional and biologic DMARD in patients with RA published between January 2000 and June 2010 was performed in Medline, Embase, and CINAHL databases, and was supplemented with a "grey literature" search including relevant public health guidelines. Systematic reviews of postmarketing surveillance and RA registry studies were performed to update included guideline literature reviews as appropriate. Guideline quality was independently assessed by 2 reviewers. Guideline characteristics, recommendations, and supporting evidence from observational studies and randomized trials were synthesized into evidence tables. The working group voted on recommendations using a modified Delphi technique. RESULTS Thirteen recommendations addressing perioperative care, screening for latent tuberculosis infection prior to the initiation of biologic DMARD, optimal vaccination practices, and treatment of RA patients with active or a history of malignancy were developed for rheumatologists, other primary prescribers of RA drug therapies, and RA patients. CONCLUSION These recommendations were developed based on a synthesis of international RA and public health guidelines, supporting evidence, and expert consensus in the context of the Canadian health system. They are intended to help promote best practices and improve healthcare delivery for persons with RA.
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Affiliation(s)
- Claire Bombardier
- The Rebecca MacDonald Centre for Arthritis and Autoimmune Disease, Mount Sinai Hospital, Toronto, Canada.
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Gaujoux-Viala C, Paternotte S, Combe B, Dougados M. Evidence of the symptomatic and structural efficacy of methotrexate in daily practice as the first disease-modifying drug in rheumatoid arthritis despite its suboptimal use: results from the ESPOIR early synovitis cohort. Rheumatology (Oxford) 2012; 51:1648-54. [PMID: 22661552 DOI: 10.1093/rheumatology/kes135] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE To describe the use of MTX in early arthritis (EA) in daily clinical practice and to evaluate its 6-month symptomatic efficacy and 12-month structural efficacy. METHODS Patients included in the French observational ESPOIR cohort were assessed. Evaluation of the symptomatic and structural efficacy was performed by generalized linear regression after adjustment on propensity score (PS) in the group of patients receiving at least 3 months of MTX vs the ones receiving any other treatment except LEF, SSZ or TNF inhibitors. RESULTS Within the first 6 months of follow-up of 777 EA patients, 59% received a DMARD, which was MTX in 68% (N = 313) of patients. The mean dose of MTX was 12.7 ± 3.8 mg/week. Only 53.7% of the patients received folic acid supplementation. MTX was initiated in patients with more active and severe disease. At 6 months, in unadjusted analysis, patients starting MTX had a significantly higher DAS-28 (3.58 vs 3.23; P = 0.001) and a significantly higher HAQ (0.60 vs. 0.48; P = 0.01) compared with controls. After adjustment by PS, there were no significant differences. Adjustment for the PS also revealed a statistically significant decrease in the radiological progression at 12 months in the MTX group [total Sharp-van der Heijde score (SHS), 1.05 ± 0.29 vs 2.02 ± 0.29, P = 0.025]. CONCLUSION This study confirms the symptomatic and structural efficacy of MTX in EA in daily practice despite the non-optimal use of MTX, including low doses and infrequent concomitant folic acid supplementation.
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Affiliation(s)
- Cécile Gaujoux-Viala
- Groupe hospitalier Pitié-Salpêtrière, Service de Rhumatologie, 83 boulevard de l'Hôpital, Paris cedex 13, France.
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Gheorghe KR, Sadique S, Leclerc P, Idborg H, Wobst I, Catrina AI, Jakobsson PJ, Korotkova M. Limited effect of anti-rheumatic treatment on 15-prostaglandin dehydrogenase in rheumatoid arthritis synovial tissue. Arthritis Res Ther 2012; 14:R121. [PMID: 22616846 PMCID: PMC3446502 DOI: 10.1186/ar3851] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 04/20/2012] [Accepted: 05/22/2012] [Indexed: 01/22/2023] Open
Abstract
Introduction Rheumatoid arthritis (RA) is a chronic inflammatory disease in which prostaglandin E2 (PGE2) displays an important pathogenic role. The enzymes involved in its synthesis are highly expressed in the inflamed synovium, while little is known about 15- prostaglandin dehydrogenase (15-PGDH) that metabolizes PGE2. Here we aimed to evaluate the localization of 15-PGDH in the synovial tissue of healthy individuals or patients with inflammatory arthritis and determine the influence of common RA therapy on its expression. Methods Synovial tissue specimens from healthy individuals, psoriatic arthritis, ostheoarthritis and RA patients were immunohistochemically stained to describe the expression pattern of 15-PGDH. In addition, the degree of enzyme staining was evaluated by computer analysis on stained synovial biopsies from two groups of RA patients, before and after RA specific treatment with either intra-articular glucocorticoids or oral methotrexate therapy. Prostaglandins derived from the cyclooxygenase (COX) pathway were determined by liquid-chromatography mass spectrometry in supernatants from interleukin (IL) 1β-activated fibroblast-like synoviocytes (FLS) treated with methotrexate. Results 15-PGDH was present in healthy and inflamed synovial tissue, mainly in lining macrophages, fibroblasts and vessels. Intra-articular glucocorticoids showed a trend towards reduced 15-PGDH expression in RA synovium (p = 0.08) while methotrexate treatment left the PGE2 pathway unaltered both in biopsies ex vivo and in cultured FLS. Conclusions Early methotrexate therapy has little influence on the expression of 15-PGDH and on any of the PGE2 synthesizing enzymes or COX-derived metabolites. Thus therapeutic strategies involving blocking induced PGE2 synthesis may find a rationale in additionally reducing local inflammatory mediators.
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Affiliation(s)
- Karina Roxana Gheorghe
- Department of Medicine, Rheumatology Unit, Karolinska Institute/Karolinska University Hospital Solna, Stockholm, 171 76 Sweden
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Fertility in male patients with seronegative spondyloarthropathies treated with infliximab. Joint Bone Spine 2012; 80:34-7. [PMID: 22575067 DOI: 10.1016/j.jbspin.2012.03.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Accepted: 03/12/2012] [Indexed: 02/08/2023]
Abstract
OBJECTIVES The majority of patients with ankylosing spondylitis (AS) and psoriatic arthritis (PsA) are affected during their peak reproductive years. Tumor necrosis factor (TNF)α plays a pivotal role in the pathogenesis of both diseases. Today, anti-TNFα blockers are an essential treatment for these patients. To identify male patients who achieved pregnancy development during their management with anti-TNFα blockers (infliximab). METHODS We reviewed the data of 65 patients with AS and 30 patients with PsA who were followed-up in our rheumatology outpatients clinic and they were on infliximab therapy between January 2001 and December 2010. RESULTS We identified overall seven male patients with AS and three male patients with PsA who had fathered 14 healthy infants. Moreover, we recognized one man with PsA who was on infliximab and on concomitant therapy with MTX at the time of conception, whose wife had to proceed to therapeutic abortion due to congenital abnormalities of the fetus (hydrocephalia), while she was on the first trimester of pregnancy. CONCLUSIONS We described male patients with AS and PsA who demonstrated no fertility problems while they were on infliximab treatment. The data designated in this report provide some supportive evidence for the safe use of infliximab in male patients who are affected of those inflammatory diseases during their peak reproductive years.
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Dougados M, Kissel K, Sheeran T, Tak PP, Conaghan PG, Mola EM, Schett G, Amital H, Navarro-Sarabia F, Hou A, Bernasconi C, Huizinga TWJ. Adding tocilizumab or switching to tocilizumab monotherapy in methotrexate inadequate responders: 24-week symptomatic and structural results of a 2-year randomised controlled strategy trial in rheumatoid arthritis (ACT-RAY). Ann Rheum Dis 2012; 72:43-50. [PMID: 22562983 PMCID: PMC3551223 DOI: 10.1136/annrheumdis-2011-201282] [Citation(s) in RCA: 217] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Objective In patients with active rheumatoid arthritis (RA) despite methotrexate, to compare the efficacy of adding tocilizumab to that of switching to tocilizumab monotherapy. Methods Double-blind, 2-year study in which adults with active RA (DAS28 >4.4) despite methotrexate were randomly assigned either to continue methotrexate with the addition of tocilizumab (MTX+TCZ) 8 mg/kg every 4 weeks or switch to tocilizumab and placebo (TCZ+PBO). The primary endpoint was the DAS28–erythrocyte sedimentation rate (ESR) remission rate at week 24. Secondary objectives included other symptomatic outcomes, quality of life and progression of structural damage. Results Of 556 randomly assigned patients, 512 (92%) completed 24 weeks. DAS28–ESR remission rates were 40.4% for TCZ+MTX and 34.8% for TCZ+PBO (p=0.19); American College of Rheumatology 20/50/70/90 rates were 71.5%/45.5%/24.5%/5.8% (TCZ+MTX) and 70.3%/40.2%/25.4%/5.1% (TCZ+PBO; differences not significant). A significant difference between groups was seen for low DAS28 (61.7% vs 51.4%). Radiographic progression was small and not different between groups (Genant–Sharp score progression ≤ smallest detectable change in 91% (TCZ+MTX) and 87% (TCZ+PBO)). Rates per 100 patient-years of serious adverse events and serious infections were 21 and six, respectively, for TCZ+MTX and 18 and six, respectively, for TCZ+PBO. Alanine aminotransferase elevations greater than threefold the upper limit of normal occurred in 7.8% and 1.2% of TCZ+MTX and TCZ+PBO patients, respectively. Conclusion No clinically relevant superiority of the TCZ+MTX add-on strategy over the switch to tocilizumab monotherapy strategy was observed. The combination was more commonly associated with transaminase increases. Meaningful clinical and radiographic responses were achieved with both strategies, suggesting that tocilizumab monotherapy might be a valuable treatment strategy in suitable RA patients.
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Reich K, Domm S, Mrowietz U. Methotrexate therapy in dermatology. J Dtsch Dermatol Ges 2012; 10:363-70. [DOI: 10.1111/j.1610-0387.2012.07926.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tugnet N, Cooper SC, Douglas KM. Methotrexate therapy, rheumatoid arthritis, and life-threatening liver complications: should we be monitoring more closely? Scand J Rheumatol 2012; 41:163-4. [DOI: 10.3109/03009742.2012.657234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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260
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Stamp LK, Roberts RL. Effect of genetic polymorphisms in the folate pathway on methotrexate therapy in rheumatic diseases. Pharmacogenomics 2012; 12:1449-63. [PMID: 22008049 DOI: 10.2217/pgs.11.86] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Methotrexate (MTX) is the first-line treatment for rheumatoid arthritis and is frequently used in the management of other forms of inflammatory arthritis. It is currently challenging to predict which patients will achieve adequate disease control and which patients will develop adverse effects while taking MTX. As an analog of dihydrofolic acid, MTX enters cells through the reduced folate carrier-1 protein, and is polyglutamated. MTX polyglutamates inhibit key enzymes in the folate pathway to produce an anti-inflammatory effect. It has been suggested that genetic polymorphisms in the folate pathway may influence intracellular folate and MTX polyglutamates pools, and thus MTX response. However, studies to identify genetic predictors have yielded inconclusive results. Nonreplication across studies has been attributed to insufficient statistical power as well as pharmacological and clinical confounders. Prospective studies, standardizing the definitions of response and toxicity, and application of genome-wide approaches may advance the search for genetic predictors of MTX response.
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Affiliation(s)
- Lisa K Stamp
- Department of Biochemistry, University of Otago, Dunedin 9054, New Zealand.
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261
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Arena U, Stasi C, Mannoni A, Benucci M, Maddali-Bongi S, Cammelli D, Assarat A, Marra F, Pinzani M. Liver stiffness correlates with methotrexate cumulative dose in patients with rheumatoid arthritis. Dig Liver Dis 2012; 44:149-53. [PMID: 21930442 DOI: 10.1016/j.dld.2011.08.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Revised: 08/03/2011] [Accepted: 08/14/2011] [Indexed: 12/11/2022]
Abstract
BACKGROUND Liver stiffness values were recently proposed to identify patients with methotrexate-induced liver fibrosis. Aim of this study was to assess the clinical and laboratory determinants of the association between liver stiffness, measured by transient elastography, and methotrexate treatment in patients with rheumatoid arthritis in the absence of other factors contributing to liver damage and fibrosis. METHODS 100 patients with rheumatoid arthritis, with a cumulative methotrexate dose ranging from 1530 to 13,000 mg over a mean period of 7.07±3.89 yrs, were retrospectively evaluated. RESULTS The average liver stiffness value in the whole population was 4.93±1.8 kPa, excluding the presence of significant fibrosis. At univariate analysis, a significant correlation was found between liver stiffness and methotrexate cumulative dose, duration of treatment, alanine transaminases levels, body mass index, gamma glutamyl-transpeptidase and the presence of steatosis. At multivariate analysis, a significant association was detected only between liver stiffness and methotrexate cumulative dose. Out of 11 patients with liver stiffness >7.0 kPa, five were subjected to liver biopsy and mild or moderate perisinusoidal fibrosis was detected in two patients with a cumulative dose >4000 mg and liver stiffness >9 kPa. CONCLUSIONS Chronic methotrexate treatment induces a progressive increase in liver stiffness corresponding to mild or moderate perisinusoidal fibrosis for values >9 kPa.
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Affiliation(s)
- Umberto Arena
- Dipartimento di Medicina Interna, Università degli Studi di Firenze/Azienda Ospedaliero Universitaria Careggi (AOUC), Firenze, Italy
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Khan N, Abbas AM, Whang N, Balart LA, Bazzano LA, Kelly TN. Incidence of liver toxicity in inflammatory bowel disease patients treated with methotrexate: a meta-analysis of clinical trials. Inflamm Bowel Dis 2012; 18:359-67. [PMID: 21751301 DOI: 10.1002/ibd.21820] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Accepted: 06/08/2011] [Indexed: 01/22/2023]
Abstract
BACKGROUND Crohn's disease and ulcerative colitis are chronic debilitating diseases for which there are multiple treatment options. There are limited data on methotrexate's efficacy and safety profile. Our aim was to estimate the hepatotoxicity associated with its use in inflammatory bowel diseases (IBDs). METHODS We systematically searched the Medline, Cochrane Library, Web of Science, and EMBASE databases and manually examined references in selected articles for trials that used methotrexate as a treatment for IBDs. Thirteen trials that fulfilled the inclusion and exclusion criteria were included in the meta-analysis. Information on trial and patient characteristics, use of methotrexate as well as other treatments or placebo, and levels of hepatic aminotransferase enzymes were abstracted by two independent investigators using a standardized form. A random effects model was used to pool the incidence rates of reported abnormalities in hepatic aminotransferases. RESULTS The pooled incidence rate of abnormal hepatic aminotransferase levels (defined as up to a 2-fold increase over the upper limit of the normal range) in patients treated with methotrexate for IBD was 1.4 per 100 person-months, while the rate of hepatotoxicity (defined as greater than a 2-fold over the upper limit of the normal range) was 0.9 per 100 person-months. The rate of withdrawal from treatment due to these abnormalities was 0.8 per 100 person-months. CONCLUSIONS The incidence of methotrexate-related hepatotoxicity as measured by elevation in transaminases and drug withdrawal secondary to elevated transaminases is relatively low.
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Affiliation(s)
- Nabeel Khan
- Section of Gastroenterology and Hepatology at Tulane University Health Sciences Center, New Orleans, Louisiana 70112, USA.
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263
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Hernandez-Baldizon S. ¿Cómo hacer buen uso del metotrexato en artritis reumatoide? ACTA ACUST UNITED AC 2012; 8:42-5. [DOI: 10.1016/j.reuma.2011.01.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Revised: 01/25/2011] [Accepted: 01/27/2011] [Indexed: 10/17/2022]
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Spezielle Arzneimitteltherapie in der Schwangerschaft. ARZNEIMITTEL IN SCHWANGERSCHAFT UND STILLZEIT 2012. [PMCID: PMC7271212 DOI: 10.1016/b978-3-437-21203-1.10002-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Rath T, Sander O, Rubbert A. Conventional disease-modifying antirheumatic drugs to treat rheumatoid arthritis. Drug Dev Res 2011. [DOI: 10.1002/ddr.20475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lie E, Uhlig T, van der Heijde D, Rødevand E, Kalstad S, Kaufmann C, Mikkelsen K, Kvien TK. Effectiveness of sulfasalazine and methotrexate in 1102 DMARD-naive patients with early RA. Rheumatology (Oxford) 2011; 51:670-8. [PMID: 22157597 DOI: 10.1093/rheumatology/ker356] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE To compare baseline characteristics, responses and drug survival in patients with early RA starting SSZ or MTX in a real-life setting. METHODS The analyses included DMARD-naïve patients with RA (disease duration ≤ 1 year) starting SSZ or MTX. Three- and 6-month effectiveness was compared by unadjusted analysis and with adjustment for propensity score quintile. In addition, effectiveness in SSZ- and MTX-treated patients matched for RF status and baseline DAS-28 was compared. RESULTS SSZ-treated patients (n = 175) had lower baseline disease activity than patients treated with MTX (n = 927) [mean 28-joint DAS (DAS-28) 4.4 vs 5.0, P < 0.001], and were less often RF positive (50 vs 61%, P = 0.006). Six-month mean ΔDAS-28 was smaller with SSZ than MTX (-1.0 vs -1.5, P = 0.003); the difference was not significant after adjustment for propensity score quintile (P = 0.36). For SSZ/MTX, 3-month ACR50 and European League Against Rheumatism (EULAR) good responses were 9/23% (P < 0.001) and 24/31% (P = 0.14), respectively. Three-year drug survival was superior for MTX (P < 0.001) and estimated 1-year survival rates were 42/75% for SSZ/MTX. In patients matched for baseline DAS-28 and RF, mean ΔDAS-28 (MTX -1.2, P = 0.55 vs SSZ) and EULAR good responses (39 vs 37%, P = 0.74) were similar at 6 months; drug survival was superior for MTX (P < 0.001). CONCLUSION Patients treated with SSZ as first DMARD were more often RF negative and had lower baseline disease activity. Drug survival was superior for MTX, and effectiveness was greater with MTX than with SSZ although the difference was reduced when adjusting for differences in baseline characteristics.
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Affiliation(s)
- Elisabeth Lie
- Department of Rheumatology, Diakonhjemmet Hospital, PO Box 23 Vinderen, N-0319 Oslo, Norway.
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268
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Suzuki Y, Chinen N. [Treatment of rheumatic diseases: current status and future prospective. Topics: II. Immunosuppressant/antirheumatic drugs; 1. Methotrexate]. NIHON NAIKA GAKKAI ZASSHI. THE JOURNAL OF THE JAPANESE SOCIETY OF INTERNAL MEDICINE 2011; 100:2902-2909. [PMID: 22175129 DOI: 10.2169/naika.100.2902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Affiliation(s)
- Yasuo Suzuki
- Tokai University School of Medicine, Department of Medicine, Division of Rheumatology, Japan
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Stamp LK, Barclay ML, O'Donnell JL, Zhang M, Drake J, Frampton C, Chapman PT. Effects of changing from oral to subcutaneous methotrexate on red blood cell methotrexate polyglutamate concentrations and disease activity in patients with rheumatoid arthritis. J Rheumatol 2011; 38:2540-7. [PMID: 21965639 DOI: 10.3899/jrheum.110481] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To determine the effects of changing from oral to subcutaneous (SC) methotrexate (MTX) in patients with rheumatoid arthritis (RA) on red blood cell MTX polyglutamate (RBC MTXGlu(n)) concentrations, disease activity, and adverse effects. METHODS Thirty patients were changed from oral to SC MTX. Trough RBC MTXGlu(n) concentrations were measured for 24 weeks and concentrations fitted to a first-order accumulation model. Disease activity was assessed by 28-joint Disease Activity Score (DAS28). RESULTS MTXGlu(3), MTXGlu(4), and MTXGlu(5) concentrations, but not MTXGlu(1) and MTXGlu(2), increased significantly over 24 weeks, reaching 90% of new steady-state concentrations by about 40 weeks. A decrease in DAS28 was associated with increased RBC MTXGlu(5) (p = 0.035) and RBC MTXGlu(3-5) (p = 0.032). No change in adverse effect frequency occurred. CONCLUSION Changing to SC MTX results in increased long-chain MTXGlu(n). However, it takes at least 6 months for RBC steady-state concentrations to be achieved. Increased long-chain MTXGlu(n) concentrations were significantly associated with reduced disease activity.
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Affiliation(s)
- Lisa K Stamp
- Department of Medicine, University of Otago, Christchurch, New Zealand.
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270
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Bykerk VP, Akhavan P, Hazlewood GS, Schieir O, Dooley A, Haraoui B, Khraishi M, Leclercq SA, Légaré J, Mosher DP, Pencharz J, Pope JE, Thomson J, Thorne C, Zummer M, Bombardier C. Canadian Rheumatology Association recommendations for pharmacological management of rheumatoid arthritis with traditional and biologic disease-modifying antirheumatic drugs. J Rheumatol 2011; 39:1559-82. [PMID: 21921096 DOI: 10.3899/jrheum.110207] [Citation(s) in RCA: 177] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The Canadian Rheumatology Association (CRA) has developed recommendations for the pharmacological management of rheumatoid arthritis (RA) with traditional and biologic disease-modifying antirheumatic drugs (DMARD) in 2 parts. Part 1 is reported here. METHODS The CRA Therapeutics Committee assembled a national working group of RA clinical experts, researchers, patient consumers, and a general practitioner. Treatment questions were developed a priori based on results of a national needs assessment survey. A systematic review of all clinical practice guidelines and consensus statements regarding treatment with traditional and biologic DMARD in patients with RA published between January 2000 and June 2010 was performed in Medline, Embase, and CINAHL databases, and the grey literature. Guideline quality was assessed by 2 independent reviewers, and guideline characteristics, recommendations, and supporting evidence from observational studies and randomized controlled trials were synthesized into evidence tables. The full working group reviewed the evidence tables and developed recommendations using a modified Delphi technique. RESULTS Five overarching principles and 26 recommendations addressing general RA management strategies and treatment with glucocorticoids and traditional and biologic DMARD were developed for rheumatologists, other primary prescribers of RA drug therapies, and patients with RA. CONCLUSION These recommendations were developed based on a synthesis of international guidelines, supporting evidence, and expert consensus considering the Canadian healthcare context with the intention of promoting best practices and improving healthcare delivery for persons with RA.
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Affiliation(s)
- Vivian P Bykerk
- Mount Sinai Hospital, The Rebecca McDonald Centre for Arthritis and Autoimmune Disease, Toronto, Canada.
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Perioperative care of the patient with rheumatoid arthritis. AORN J 2011; 94:290-7; quiz 298-300. [PMID: 21884850 DOI: 10.1016/j.aorn.2011.05.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2011] [Accepted: 05/17/2011] [Indexed: 11/20/2022]
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Kumar A, Auron M, Aneja A, Mohr F, Jain A, Shen B. Inflammatory bowel disease: perioperative pharmacological considerations. Mayo Clin Proc 2011; 86:748-57. [PMID: 21803957 PMCID: PMC3146375 DOI: 10.4065/mcp.2011.0074] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The perioperative management of patients with inflammatory bowel disease is challenging given the altered immune system that results from a variety of biologic and immunomodulator therapies. Clinicians are often faced with challenges and complicated equations when deciding on the type and dose of medication. To understand the effect of these medications and review the evidence regarding the management of these medications in the perioperative setting, a PubMed-based literature search (January 1, 1960, through April 1, 2011) was conducted using the following search terms: perioperative management, risk, outcome, inflammatory bowel disease, ulcerative colitis, Crohn's disease, aminosalicylates, glucocorticoids, purine analogues, cyclosporine, methotrexate, biologic therapy, infliximab, and thromboembolism. The 414 articles identified were manually sorted to exclude those that did not address perioperative risk, outcomes, and medications in the abstracts, yielding 84 articles for review. Additional references were obtained from the citations within the retrieved articles. This review surveys the findings of the selected articles and presents guidelines and resources for perioperative medication management for patients with inflammatory bowel disease undergoing surgery.
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Affiliation(s)
- Ajay Kumar
- Department of Hospital Medicine, Cleveland Clinic, Cleveland, OH, USA.
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273
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KARSH JACOB, KEYSTONE EDWARDC, HARAOUI BOULOS, THORNE JCARTER, POPE JANETE, BYKERK VIVIANP, MAKSYMOWYCH WALTERP, ZUMMER MICHEL, BENSEN WILLIAMG, KRAISHI MAJEDM. Canadian Recommendations for Clinical Trials of Pharmacologic Interventions in Rheumatoid Arthritis: Inclusion Criteria and Study Design: Table 1. J Rheumatol 2011; 38:2095-104. [DOI: 10.3899/jrheum.110188] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Objective.Current clinical trial designs for pharmacologic interventions in rheumatoid arthritis (RA) do not reflect the innovations in RA diagnosis, treatment, and care in countries where new drugs are most often used. The objective of this project was to recommend revised entry criteria and other study design features for RA clinical trials.Methods.Recommendations were developed using a modified nominal group consensus method. Canadian Rheumatology Research Consortium (CRRC) members were polled to rank the greatest challenges to clinical trial recruitment in their practices. Initial recommendations were developed by an expert panel of rheumatology trialists and other experts. A scoping study methodology was then used to examine the evidence available to support or refute each initial recommendation. The potential influence of CRRC recommendations on primary outcomes in future trials was examined. Recommendations were finalized using a consensus process.Results.Recommendations for clinical trial inclusion criteria addressed measures of disease activity [Disease Activity Score 28 using erythrocyte sedimentation rate (DAS28-ESR) > 3.2 PLUS ≥ 3 tender joints using 28-joint count (TJC28) PLUS ≥ 3 swollen joint (SJC28) OR C-reactive protein (CRP) or ESR > upper limit of normal PLUS ≥ 3 TJC28 PLUS ≥ 3 SJC28], functional classification, disease classification and duration, and concomitant RA treatments. Additional recommendations regarding study design addressed rescue strategies and longterm extension.Conclusion.There is an urgent need to modify clinical trial inclusion criteria and other study design features to better reflect the current characteristics of people living with RA in the countries where the new drugs will be used.
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KEYSTONE EDWARDC, SHIRINSKY VALERYS, SIMON LEES, PEDDER SIMON, HEWITT LARTHUR. Efficacy and Safety of CH-1504, a Metabolically Stable Antifolate, in Patients with Active Rheumatoid Arthritis: Results of a Phase II Multicenter Randomized Study. J Rheumatol 2011; 38:1875-83. [DOI: 10.3899/jrheum.101038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Objective.To investigate the potential efficacy, safety, and tolerability of daily use of CH-1504 in patients with active rheumatoid arthritis (RA). US National Institutes of Health database no. NCT00658047.Methods.In our phase II randomized double-blind double-dummy study, patients naive to methotrexate (MTX; n = 201) and having moderate to severe RA received either CH-1504 (0.25 mg, 0.5 mg, or 1.0 mg once-daily oral doses) or MTX (titrated to 20.0 mg once-weekly oral doses). All received weekly 10-mg folate supplementation. Efficacy and safety were assessed at 2, 4, 8, and 12 weeks, with a treatment-free followup at 16 weeks. Safety and tolerability were assessed. Primary efficacy endpoint was proportion of patients achieving ACR20 response at Week 12. Secondary endpoints included difference from baseline in the 28-joint Disease Activity Score (DAS28) and individual components of the American College of Rheumatology (ACR) composite index.Results.Demographic characteristics were similar in all treatment groups: mean age 54.3 ± 11.4 years, female sex 87%, mean baseline DAS28 6.6 ± 0.9. At Week 12, CH-1504 demonstrated comparable efficacy compared to MTX as measured by ACR20, DAS28, and ACR composite core-set measures, including tender and swollen joints. No dose-response relationship was observed. Adverse events across treatment groups were mild. Liver enzyme levels increased from baseline to Week 16 in the MTX group, with qualitatively lesser increases in the CH-1504 groups. Two patients in the MTX group withdrew because of gastrointestinal-related adverse events. CH-1504 appeared safe and well tolerated at all dose levels.Conclusion.CH-1504 has comparable efficacy to MTX and is safe and well tolerated. Metabolically stable antifolates are a promising therapeutic option that warrants further study.
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Bulatović M, Heijstek MW, Verkaaik M, van Dijkhuizen EHP, Armbrust W, Hoppenreijs EPA, Kamphuis S, Kuis W, Egberts TCG, Sinnema G, Rademaker CMA, Wulffraat NM. High prevalence of methotrexate intolerance in juvenile idiopathic arthritis: Development and validation of a methotrexate intolerance severity score. ACTA ACUST UNITED AC 2011; 63:2007-13. [DOI: 10.1002/art.30367] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Methotrexate attenuates the Th17/IL-17 levels in peripheral blood mononuclear cells from healthy individuals and RA patients. Rheumatol Int 2011; 32:2415-22. [PMID: 21691744 DOI: 10.1007/s00296-011-1867-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2010] [Accepted: 02/18/2011] [Indexed: 01/23/2023]
Abstract
To investigate whether the inhibition of Th17/interleukin (IL)-17 contributes to the beneficial effects of methotrexate (MTX) in the treatment of rheumatoid arthritis (RA). Peripheral blood mononuclear cells (PBMCs) from healthy donors and RA patients were collected. The cells were stimulated with monoclonal antibodies to CD3 and CD28 in the absence or presence of MTX. After coincubation, IL-17 production was detected at both the mRNA and protein levels, and the percentage of cells positive for both CD4 and IL-17 in PBMCs was analyzed by flow cytometry. PBMCs of healthy donors and RA patients were stimulated with CD3 and CD28 monoclonal antibodies to produce high levels of IL-17. The augmentation of IL-17 at the mRNA and protein levels was significantly inhibited when PBMC cultures were preincubated with MTX. Compared with PBMCs of healthy donors, PBMCs of RA patients produced higher levels of IL-17, and this increase in IL-17 levels was more inhibited by MTX pretreatment. MTX inhibited IL-17 at the mRNA level in a dose-dependent manner, but not at the protein level, in both PBMCs of healthy donors and RA patients. MTX did not affect the percentage of CD4- and IL-17-positive cells in PBMCs. MTX dose dependently suppressed the production of IL-17 at the mRNA level by PBMCs from healthy donors and RA patients. Suppression of IL-17 by MTX may contribute to its potent anti-inflammatory role in RA therapy.
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Abstract
Methotrexate (MTX) is the most frequently used drug in combination treatment with disease-modifying antirheumatic drugs (DMARDs) and biologics in rheumatoid arthritis. DMARD combinations are usually the second step after unsuccessful MTX monotherapy. Evidence-based combinations of MTX+leflunomide, MTX+cyclosporine and triple combination MTX+sulphasalazine+hydroxychloroquine (complemented by glucocorticoids) showed the best results.In the case of insufficient response to the DMARD combination, MTX should be used in combination with a biologic. To date, the most frequent biologic treatment is with TNF inhibitors, but studies have shown that all biologics (with the exception of Anakinra) have comparable success rates. The combination of MTX plus abatacept, MTX plus rituximab and MTX plus tocilizumab are very promising, both clinically and in terms of blocking radiological progression. The efficacy of biological therapy is generally better using MTX combination than monotherapy.The safety of MTX combination treatment with DMARDs is not significantly lower than that of the individual substances; therefore, the required safety controls are also the same.
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Mulleman D, Lauféron F, Wendling D, Ternant D, Ducourau E, Paintaud G, Goupille P. Infliximab in ankylosing spondylitis: alone or in combination with methotrexate? A pharmacokinetic comparative study. Arthritis Res Ther 2011; 13:R82. [PMID: 21639907 PMCID: PMC3218893 DOI: 10.1186/ar3350] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Revised: 03/21/2011] [Accepted: 06/03/2011] [Indexed: 12/19/2022] Open
Abstract
INTRODUCTION Methotrexate (MTX) has been shown to modify infliximab pharmacokinetics in rheumatoid arthritis. However, its combination with infliximab in the treatment of ankylosing spondylitis (AS) is not recommended. The objective of this study was to examine the influence of MTX on infliximab exposure in patients with AS. METHODS Patients with AS patients who had predominantly axial symptoms were randomised to receive infliximab alone (infusions of 5 mg/kg at weeks 0, 2, 6, 12 and 18) or infliximab combined with MTX (10 mg/week). Infliximab concentrations were measured before and 2 hours after each infusion and at 1, 3, 4, 5, 8, 10, 14 and 18 weeks. We estimated individual cumulative area under the concentration versus time curves (AUC) for infliximab concentration between baseline and week 18 (AUC(0-18)). Clinical and laboratory evaluations were performed at each visit. The Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) score was the primary end point for clinical response. RESULTS Twenty-six patients were included (infliximab group: n = 12, infliximab + MTX group: n = 14), and 507 serum samples were available for measurement of infliximab concentration. The two groups did not differ with regard to AUC(0-18) or evolution of BASDAI scores and biomarkers of inflammation. CONCLUSIONS The combination of MTX and infliximab does not increase the exposure to infliximab over infliximab alone in patients with AS. TRIAL REGISTRATION ClinicalTrials.gov: NCT00507403.
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Affiliation(s)
- Denis Mulleman
- Université François-Rabelais de Tours, Centre National de la Recherche Scientifique UMR 6239 GICC (Génétique Immunothérapie Chimie et Cancer), 3 rue des Tanneurs, F-37041 Tours Cedex 1, France
- Service de Rhumatologie, Centre Hospitalier Régional et Universitaire de Tours, avenue de la République, F-37044 Tours Cedex 9, France
| | - Francine Lauféron
- Université François-Rabelais de Tours, Centre National de la Recherche Scientifique UMR 6239 GICC (Génétique Immunothérapie Chimie et Cancer), 3 rue des Tanneurs, F-37041 Tours Cedex 1, France
- Service de Rhumatologie, Centre Hospitalier Régional et Universitaire de Tours, avenue de la République, F-37044 Tours Cedex 9, France
| | - Daniel Wendling
- Université de Franche-Comté, EA 4266 API (Agents Pathogènes et Inflammation), Hôpital Saint Jacques, 2 place Saint-Jacques, F-25030 Besançon Cedex, Besançon, France
- Service de Rhumatologie, Centre Hospitalier Régional et Universitaire de Besançon, Hôpital Jean Minjoz, 3 boulevard Alexander Fleming, F-25030 Besançon Cedex, Besançon, France
| | - David Ternant
- Université François-Rabelais de Tours, Centre National de la Recherche Scientifique UMR 6239 GICC (Génétique Immunothérapie Chimie et Cancer), 3 rue des Tanneurs, F-37041 Tours Cedex 1, France
- Laboratoire de Pharmacologie-Toxicologie, Centre Hospitalier Régional et Universitaire de Tours, 2 boulevard Tonnellé, F-37044 Tours Cedex 9, France
| | - Emilie Ducourau
- Université François-Rabelais de Tours, Centre National de la Recherche Scientifique UMR 6239 GICC (Génétique Immunothérapie Chimie et Cancer), 3 rue des Tanneurs, F-37041 Tours Cedex 1, France
- Service de Rhumatologie, Centre Hospitalier Régional et Universitaire de Tours, avenue de la République, F-37044 Tours Cedex 9, France
| | - Gilles Paintaud
- Université François-Rabelais de Tours, Centre National de la Recherche Scientifique UMR 6239 GICC (Génétique Immunothérapie Chimie et Cancer), 3 rue des Tanneurs, F-37041 Tours Cedex 1, France
- Laboratoire de Pharmacologie-Toxicologie, Centre Hospitalier Régional et Universitaire de Tours, 2 boulevard Tonnellé, F-37044 Tours Cedex 9, France
| | - Philippe Goupille
- Université François-Rabelais de Tours, Centre National de la Recherche Scientifique UMR 6239 GICC (Génétique Immunothérapie Chimie et Cancer), 3 rue des Tanneurs, F-37041 Tours Cedex 1, France
- Service de Rhumatologie, Centre Hospitalier Régional et Universitaire de Tours, avenue de la République, F-37044 Tours Cedex 9, France
- Institut National de la Santé et de la Recherche Médicale CIC 202, 2 boulevard Tonnellé, F-37044 Tours Cedex 9, Tours, France
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Polido-Pereira J, Vieira-Sousa E, Fonseca JE. Rheumatoid arthritis: what is refractory disease and how to manage it? Autoimmun Rev 2011; 10:707-13. [PMID: 21570496 DOI: 10.1016/j.autrev.2011.04.023] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Despite the enthusiastic progresses in the field of rheumatoid arthritis pharmacotherapy the presence of prognostic factors associated with an unfavorable outcome and the inappropriate and/or delayed initiation of DMARDs can diminish the likelihood of achieving remission and increase the probability of refractoriness to treatment. During the last decade we have experience exciting developments regarding the approval of new treatment options but few patients are reaching sustained remission and refractory patients continue to be a problem. Thus, it is critical to understand how clinicians can decrease the risk of refractoriness by close monitoring disease activity, using well defined and accepted composite measures, and by early and optimized use of DMARDs, including biologics. The goal of this review paper is to offer an evidence based roadmap to prevent and to deal with refractory RA.
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Blanco FJ, Ballina J, Carbonell J, Martín-Mola E, Tornero J, Ramírez E, Galván J. Estudio descriptivo de la utilización de los FAMES en los pacientes con artritis reumatoide o artritis persistente que inician tratamiento farmacológico en España. (ESTUDIO FIRST). ACTA ACUST UNITED AC 2011; 7:88-93. [DOI: 10.1016/j.reuma.2010.03.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2009] [Revised: 03/03/2010] [Accepted: 03/16/2010] [Indexed: 01/24/2023]
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Abstract
Rheumatologic diseases such as rheumatoid arthritis, systemic lupus erythematosus, Sjögren syndrome, and scleroderma are immunologically mediated disorders that typically have multisystem involvement. Although clinically significant liver involvement is rare, liver enzyme abnormalities may be observed in up to 43% of patients. The biochemical abnormalities are typically mild and transient and the histologic abnormalities are usually nonprogressive. Such biochemical and histologic findings are typically ascribed to the primary rheumatologic condition and require no specific management. In a subset of patients with rheumatologic conditions and liver test abnormalities, further evaluation identifies a coexisting, primary liver disease or medication-related liver toxicity as the cause of the biochemical abnormality. Liver test abnormalities in patients with a coexisting primary liver disease are more likely to be persistent. In such cases, further workup using serologic tests, appropriate imaging studies and liver biopsy may be needed to accurately identify the cause of liver test abnormalities. This article reviews the spectrum of liver-related abnormalities associated with several rheumatologic diseases. Hepatotoxicity related to medications commonly prescribed in such conditions is also discussed.
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Affiliation(s)
- Christine Schlenker
- Department of Medicine, University of Washington, 1959 NE Pacific Street, UW Box Number 356424, Seattle, WA 98195, USA
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Smolen JS, Boers M, Abadie EC, Breedveld FC, Emery P, Bardin T, Goel N, Ethgen DJ, Avouac BP, Dere WH, Durez P, Matucci-Cerinic M, Flamion B, Laslop A, Lekkerkerker FJ, Miossec P, Mitlak BH, Ormarsdóttir S, Paolozzi L, Rao R, Reiter S, Tsouderos Y, Reginster JY. Recommendations for an update of 2003 European regulatory requirements for registration of drugs to be used in the treatment of RA. Curr Med Res Opin 2011; 27:315-25. [PMID: 21142618 DOI: 10.1185/03007995.2010.542135] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Since 2003, the European Medicines Agency (EMA) document, 'Points to consider on clinical investigation of medicinal products other than NSAIDs (nonsteroidal anti-inflammatory drugs) for the treatment of rheumatoid arthritis' has provided guidance for the clinical development of both biologic and non-biologic disease-modifying antirheumatic drugs (DMARDs). In the last few years, several new products have been developed or are in development for the treatment of RA, which offer significant efficacy with regard to disease control, including prevention of structural damage and disability. Concurrently, novel insights have been gained with respect to the assessment of disease activity, joint damage and disability. New treatment strategies have been established which relate to early therapy, tight control and rapid switching of medication. Accordingly, several new EULAR/ACR recommendations have been or are being developed. Several important additions and changes are needed in the 2003 guidance to incorporate the current scientific knowledge into clinical trial design for the development of future products. Under the auspices of the Group for the Respect of Ethics and Excellence in Science (GREES), a group of experts in the field of RA and clinical trial design met to provide a consensus recommendation for an update to the 2003 EMA guidance document.
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283
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Heldmann F, Dybowski F, Baraliakos X, Braun J. [Perioperative use of biologicals in rheumatoid arthritis]. Z Rheumatol 2011; 70:14-20. [PMID: 21267736 DOI: 10.1007/s00393-010-0680-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The high prevalence of patients with rheumatoid arthritis (RA) treated with biologics and the high proportion of RA patients requiring elective orthopaedic surgery indicates that the question of whether to continue or to interrupt biologic therapy in the context of a surgical procedure is a clinically relevant problem. Few data are available and the quality of the studies performed is somewhat limited. Thus, a straightforward recommendation on how this problem should be handled cannot be given on this basis. Therefore, individualized management based on risk stratification for postoperative complications seems currently to be the best solution.
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Affiliation(s)
- F Heldmann
- Rheumazentrum Ruhrgebiet, Landgrafenstr. 15, 44652, Herne.
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Assessment of liver fibrosis with transient elastography and FibroTest in patients treated with methotrexate for chronic inflammatory diseases: a case-control study. J Hepatol 2010; 53:1035-40. [PMID: 20801541 DOI: 10.1016/j.jhep.2010.04.043] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2010] [Revised: 04/03/2010] [Accepted: 04/18/2010] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Although methotrexate (MTX) is used in the effective treatment of inflammatory disorders, its use is hampered by the risk of liver fibrosis. Non-invasive methods for the diagnosis of liver fibrosis, such as transient elastography (FibroScan) and FibroTest could be useful for monitoring MTX-liver toxicity. The aim of this case-control study was to determine factors associated with liver fibrosis in a large cohort of patients requiring MTX. METHODS Consecutive adults with various benign inflammatory diseases were prospectively assessed using FibroScan and FibroTest when they were treated with MTX (cases) or before beginning treatment (controls). RESULTS Among 518 included patients, 44 patients (8.5%) had FibroScan and/or FibroTest results suggesting severe liver fibrosis. In a multivariate analysis, factors associated with abnormal markers of liver fibrosis were the body mass index >28 kg/m(2) and high alcohol consumption. Neither long MTX duration nor cumulative doses were associated with elevated FibroScan or FibroTest results. CONCLUSIONS Severe liver fibrosis is a rare event in patients treated with MTX and is probably unrelated to the total dose. Patients with other risk factors for liver disease should be closely monitored with non-invasive methods before and during MTX treatment.
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285
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Verstappen SMM, Hyrich KL. Methotrexate for rheumatoid arthritis: a guide from Canada. J Rheumatol 2010; 37:1374-6. [PMID: 20595290 DOI: 10.3899/jrheum.100187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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286
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Methotrexate safety improvement in nursing home residents. J Am Med Dir Assoc 2010; 13:69-74. [PMID: 21450205 DOI: 10.1016/j.jamda.2010.08.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2010] [Revised: 08/15/2010] [Accepted: 08/16/2010] [Indexed: 11/23/2022]
Abstract
OBJECTIVE Improve the safety of methotrexate use in nursing home residents by reducing methotrexate errors. DESIGN Concurrent cohort analysis. SETTING Long term care facilities. PARTICIPANTS Residents who received methotrexate from January 1, 2007, to December 31, 2009. INTERVENTION A 3-pronged approach involving modification to dispensing systems and practices, mandatory staff training, and measurement was implemented in June 2008 and monitored through December 2009. Software programming to the pharmacy operating systems occurred forcing a mandatory second clinical review of all methotrexate orders during the pharmacist verification process, before dispensing. Pharmacists were required to call and clarify orders that failed to fulfill prespecified safety criteria before approving the prescription for dispensing. All pharmacists were required to complete a brief, concise, focused, mandatory training program that emphasized the proper use, adverse effects, boxed warnings, appropriate dosing schedules, and new dispensing requirements for methotrexate. MEASUREMENTS On a daily basis, methotrexate orders from the previous day were summarized and forwarded to a Clinical Intervention Center for analysis and measurement. Prescriptions that triggered preestablished safety concerns were triaged back to their respective pharmacies for verification or modification. The results of the Methotrexate Safety Program were measured by tracking the number of prescriptions filled, number of patients treated, number of sentinel events, and number of safety variances identified. RESULTS All assigned pharmacists (n = 2293) completed the mandatory training between June and December 2008. In 2009, a total of 369 new employees completed the training. The prescriptions per year and patients treated per year remained comparable, whereas the number of sentinel events decreased from 3 in 2007 and 4 in 2008 to 0 following program implementation. The most prevalent variance was daily dosing of methotrexate when weekly was intended. The measurement process detected and averted 497 variances in 2008 and 693 variances in 2009 that could have resulted in sentinel events. CONCLUSION Implementation of intensification of dispensing practices, mandatory training, and measurement eradicated sentinel events associated with methotrexate in nursing homes.
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Paul C, Gourraud PA, Bronsard V, Prey S, Puzenat E, Aractingi S, Aubin F, Bagot M, Cribier B, Joly P, Jullien D, Le Maitre M, Richard-Lallemand MA, Ortonne JP. Evidence-based recommendations to assess psoriasis severity: systematic literature review and expert opinion of a panel of dermatologists. J Eur Acad Dermatol Venereol 2010; 24 Suppl 2:2-9. [PMID: 20443994 DOI: 10.1111/j.1468-3083.2009.03561.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Severity of psoriasis appears to be multidimensional and its assessment in everyday clinical practice requires a complex holistic approach. OBJECTIVES To develop evidence-based recommendations to assess severity of plaque-type psoriasis in adult patients in everyday clinical practice. METHODS A scientific committee (10 members identified on the basis of their expertise in psoriasis) using Delphi methodology selected eight questions in three domains: severity, health-related quality of life (HR-QoL) and comorbidities. Three systematic literature reviews (one per domain) of all studies published between January 1980 and June 2009 were performed based on Pub-Med, Cochrane and Embase database. Selected articles were systematically reviewed and evidence appraised according to the Oxford Levels of Evidence. On June 2009, a group of 44 French dermatologists both hospital and office based participated in a meeting including three separate rounds of discussions, plenary sessions, and modified Delphi technique votes. Recommendations for clinical practice based on systematic review and clinical experience were formulated by the group. Subsequently, agreements among the participants regarding these recommendations as well as potential impact on clinical practice were evaluated. RESULTS A total of 10 642 references were identified, of which 154 articles were analysed. Ten key recommendations on the assessment of psoriasis severity were formulated: three recommendations relating to severity assessment, three recommendations relating to HR-QoL (including the use of the Dermatology Life Quality Index [DLQI] in clinical practice) and four recommendations relating to comorbidities (including systematic screening for peripheral or axial inflammatory joint damage, regardless of psoriasis severity). CONCLUSIONS Ten recommendations to assess the severity of plaque-type psoriasis in adult patients in daily practice were developed. The recommendations are based on systematic appraisal of available evidence. They were developed and supported by a panel of dermatologists, which enhances their validity and practical relevance.
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Affiliation(s)
- C Paul
- Dermatology Department, Paul Sabatier University, Toulouse, France.
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Zrour-Hassen S, Jguirim M, Aouam K, Korbaa W, Younes M, Bejia I, Touzi M, Bergaoui N. Sécurité des médicaments à usage rhumatologique en âge de procréation. Therapie 2010; 65:465-73. [DOI: 10.2515/therapie/2010061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Accepted: 07/06/2010] [Indexed: 12/16/2022]
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Machado P, Castrejon I, Katchamart W, Koevoets R, Kuriya B, Schoels M, Silva-Fernández L, Thevissen K, Vercoutere W, Villeneuve E, Aletaha D, Carmona L, Landewé R, van der Heijde D, Bijlsma JWJ, Bykerk V, Canhão H, Catrina AI, Durez P, Edwards CJ, Mjaavatten MD, Leeb BF, Losada B, Martín-Mola EM, Martinez-Osuna P, Montecucco C, Müller-Ladner U, Østergaard M, Sheane B, Xavier RM, Zochling J, Bombardier C. Multinational evidence-based recommendations on how to investigate and follow-up undifferentiated peripheral inflammatory arthritis: integrating systematic literature research and expert opinion of a broad international panel of rheumatologists in the 3E Initiative. Ann Rheum Dis 2010; 70:15-24. [PMID: 20724311 PMCID: PMC3002765 DOI: 10.1136/ard.2010.130625] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Objective To develop evidence-based recommendations on how to investigate and follow-up undifferentiated peripheral inflammatory arthritis (UPIA). Methods 697 rheumatologists from 17 countries participated in the 3E (Evidence, Expertise, Exchange) Initiative of 2008–9 consisting of three separate rounds of discussions and modified Delphi votes. In the first round 10 clinical questions were selected. A bibliographic team systematically searched Medline, Embase, the Cochrane Library and ACR/EULAR 2007–2008 meeting abstracts. Relevant articles were reviewed for quality assessment, data extraction and synthesis. In the second round each country elaborated a set of national recommendations. Finally, multinational recommendations were formulated and agreement among the participants and the potential impact on their clinical practice was assessed. Results A total of 39 756 references were identified, of which 250 were systematically reviewed. Ten multinational key recommendations about the investigation and follow-up of UPIA were formulated. One recommendation addressed differential diagnosis and investigations prior to establishing the operational diagnosis of UPIA, seven recommendations related to the diagnostic and prognostic value of clinical and laboratory assessments in established UPIA (history and physical examination, acute phase reactants, autoantibodies, radiographs, MRI and ultrasound, genetic markers and synovial biopsy), one recommendation highlighted predictors of persistence (chronicity) and the final recommendation addressed monitoring of clinical disease activity in UPIA. Conclusions Ten recommendations on how to investigate and follow-up UPIA in the clinical setting were developed. They are evidence-based and supported by a large panel of rheumatologists, thus enhancing their validity and practical use.
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Affiliation(s)
- P Machado
- Department of Rheumatology, Coimbra University Hospital, Coimbra, Portugal.
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Malaviya AN, Sharma A, Agarwal D, Kapoor S, Garg S, Sawhney S. Low-dose and high-dose methotrexate are two different drugs in practical terms. Int J Rheum Dis 2010; 13:288-93. [PMID: 21199463 DOI: 10.1111/j.1756-185x.2010.01564.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Methotrexate (MTX) was originally synthesised as an anti-cancer drug. Soon it was also used in immunoinflammatory diseases, mainly in the field of rheumatology. However, the dose used in oncology is several-fold higher as compared to the dose used in systemic immunoinflammatory rheumatological diseases. This led to the use of terms 'low-dose MTX' (LD-MTX) and 'high-dose MTX' (HD-MTX) respectively for its use in immunoinflammatory rheumatological diseases as against its use in oncology. Extensive studies have demonstrated that therapeutic action, clinical indications, adverse effects and mechanisms of action of LD-MTX and HD-MTX are quite different. It is somewhat akin to low-dose aspirin versus high-dose aspirin with entirely different spectra of therapeutic action and adverse effects. It is important to understand this difference. This would help in allaying unfounded fear of adverse effects of LD-MTX that is often mistakenly considered the same as that of HD-MTX used in oncology.
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Affiliation(s)
- Anand N Malaviya
- Department of Rheumatology, ISIC Superspeciality Hospital, Vasant Kunj, New Delhi, India.
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291
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Tarner IH, Müller-Ladner U. [Multinational evidence-based recommendations for the use of methotrexate in rheumatic disorders with the focus on rheumatoid arthritis. Integration of a systematic literature research with the expert opinion of a large international panel of rheumatologists within the framework of the 3e initiative]. Z Rheumatol 2010; 69:250-2. [PMID: 19756660 DOI: 10.1007/s00393-009-0540-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- I H Tarner
- Lehrstuhl für Innere Medizin mit Schwerpunkt Rheumatologie, Justus-Liebig-Universität Giessen, Abteilung für Rheumatologie und klinische Immunologie, Kerckhoff-Klinik, Benekestrasse 2-8, 61231 Bad Nauheim, Deutschland.
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Herfarth HH, Osterman MT, Isaacs KL, Lewis JD, Sands BE. Efficacy of methotrexate in ulcerative colitis: failure or promise. Inflamm Bowel Dis 2010; 16:1421-30. [PMID: 20186931 PMCID: PMC2906638 DOI: 10.1002/ibd.21246] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Low-dose methotrexate is a widely used and efficacious therapy in chronic inflammatory disorders such as psoriasis and rheumatoid arthritis. Prospective randomized controlled trials have demonstrated the efficacy of parenteral methotrexate in Crohn's disease (CD). We performed a systematic review of the efficacy of methotrexate in ulcerative colitis (UC) and discuss the results in the context of the known pharmacokinetics and adverse events of methotrexate therapy in inflammatory bowel diseases and other inflammatory conditions. MATERIALS AND METHODS We performed a systematic review of the literature in Medline, Embase, and Web of Science. All publications describing patients with UC treated with methotrexate were included. RESULTS We identified 12 studies or retrospective case series and 5 meeting abstracts that met the inclusion criteria. Only 1 study reported a prospective randomized placebo-controlled trial using methotrexate at a dose of 12.5 mg orally with no significant clinical benefit. However, the majority of uncontrolled retrospective analyses suggest a clinical response to methotrexate therapy in a range of 30%-80% when the drug is applied by parenteral route in doses between 20-25 mg. CONCLUSIONS The only randomized controlled trial of methotrexate in UC employed oral dosing and doses lower than those shown to be effective in CD and did not demonstrate efficacy, whereas uncontrolled, retrospective studies using doses and routes of administration similar to those employed in CD suggest benefit. Well-designed, prospective, placebo-controlled trials of methotrexate in UC are needed.
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Affiliation(s)
- Hans H. Herfarth
- Division of Gastroenterology and Hepatology, University of North Carolina, Chapel Hill, North Carolina
| | - Mark T. Osterman
- Division of Gastroenterology and the Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Kim L. Isaacs
- Division of Gastroenterology and Hepatology, University of North Carolina, Chapel Hill, North Carolina
| | - James D. Lewis
- Division of Gastroenterology and the Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Bruce E. Sands
- MGH Crohn’s and Colitis Center and Gastrointestinal Unit, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
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Quintin E, Scoazec JY, Marotte H, Miossec P. Rare incidence of methotrexate-specific lesions in liver biopsy of patients with arthritis and elevated liver enzymes. Arthritis Res Ther 2010; 12:R143. [PMID: 20637063 PMCID: PMC2945037 DOI: 10.1186/ar3085] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 05/25/2010] [Accepted: 07/16/2010] [Indexed: 12/03/2022] Open
Abstract
Introduction The present study objective was to evaluate the incidence of methotrexate (MTX)-specific liver lesions from the analysis of a liver biopsy of inflammatory arthritis patients with elevated liver enzymes. Methods A case-control study was performed with 1,571 arthritis patients on long-term low-dose MTX therapy. Results of liver biopsy were analyzed in 41 patients with elevated liver enzymes. The expression of autoimmune markers was also assessed. This population was compared with 41 disease control subjects obtained from the same database, also on MTX but without elevated liver enzymes, matched for age, sex and rheumatic disease. Results Compared with the disease controls, patients with liver biopsy showed lower disease duration and lower MTX exposure, weekly and cumulative doses, reflecting shorter treatment duration due to liver abnormalities. Liver biopsies showed 17 autoimmune hepatitis-like (AIH-like) lesions, 13 nonalcoholic steatohepatitis-like lesions, seven limited liver lesions, and two primary biliary cirrhoses. However, MTX-specific lesions with dystrophic nuclei in hepatocytes were seen in only two cases. Liver biopsy lesions were associated with autoimmune markers (P = 0.007); notably, AIH-like lesions were associated with rheumatoid arthritis and with the presence of the HLA-DR shared epitope. Conclusions MTX-specific liver lesions are rarely observed in arthritis patients under long-term MTX therapy and elevated liver enzymes.
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Affiliation(s)
- Emilie Quintin
- Departments of Immunology and Rheumatology, Edouard Herriot hospital, Place d'Arsonval, 69437 Lyon, France.
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Barra L, Pope J, Bessette L, Haraoui B, Bykerk V. Lack of seroconversion of rheumatoid factor and anti-cyclic citrullinated peptide in patients with early inflammatory arthritis: a systematic literature review. Rheumatology (Oxford) 2010; 50:311-6. [PMID: 20621983 DOI: 10.1093/rheumatology/keq190] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE Serological markers are thought to be useful in predicting which patients with early inflammatory arthritis (EIA) will progress to RA. The objective of this study is to determine the per cent RF and anti-CCP seroconversion in EIA patients at 1-5 years of follow-up: 80% of established RA is RF or CCP positive. METHODS We conducted a systematic literature review of all English publications and recent abstracts from ACR and EULAR. Patients ≥16 years of age with at least one swollen joint and symptoms < 2 years were included. RESULTS Twelve publications met the criteria: 10 studies included data on RF, while only 5 addressed anti-CCP. Sample sizes ranged from 15 to 395 and follow-up was 6-60 months. There was marked heterogeneity between studies; therefore, results could not be pooled for a meta-analysis. Baseline RF and anti-CCP positivity was also highly variable: 8-55 and 4-45%, respectively. Seroconversion rates for EIA were 1.9-5.0% at up to 30 months follow-up for RF and 1.3-8.9% at up to 60 months follow-up for anti-CCP. CONCLUSION There is minimal change in RF or anti-CCP positivity up to 5 years of follow-up. Prevalence data for RF in established RA is significantly higher than the baseline values reported here. The low rates of seroconversion would suggest a lower prevalence in EIA and the reason for this difference remains unknown. It is unclear whether antibody-negative patients are more likely to remit and be lost to follow-up in established RA populations.
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Hayashi T, Ito S, Goto D, Matsumoto I, Sumida T. Elevated level of serum cystatin-C concentration is a useful predictor for myelosuppression induced by methotrexate for treatment of rheumatoid arthritis. Mod Rheumatol 2010; 20:548-55. [PMID: 20574650 DOI: 10.1007/s10165-010-0315-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2010] [Accepted: 04/28/2010] [Indexed: 11/24/2022]
Abstract
Methotrexate (MTX) is indispensable for the treatment of rheumatoid arthritis (RA). However, a small number of patients treated with MTX occasionally encounter some life-threatening events, including myelosuppression. Renal insufficiency, one of risk factors for these events, is difficult to assess because the serum creatinine concentration level and estimated glomerular filtration rate are sometimes inaccurately determined in aged RA patients. As a better indicator to evaluate this pathology, we measured the serum cystatin-C (Cys-C) level in 78 RA patients ≥ 50 years who were treated with MTX and observed for a year. The measurement achieved successful screening of two patients with leukocytopenia, one with interstitial lung disease (ILD), and two with liver dysfunction. An additional four referral inpatients with MTX-induced adverse events (three with pancytopenia, one with ILD) were enrolled for analysis, amounting to 82 patients. The logistic regression analysis showed that a correlation was observed between myelotoxicity and serum Cys-C level (elevation per 0.1 mg/dl; odds ratio 2.34, 95% confidence interval 1.08-5.09, p = 0.03). In conclusion, elderly RA patients potentially have subclinical renal insufficiency detected by the serum Cys-C concentration level. The elevated level of serum Cys-C is a more sensitive indicator to predict MTX-induced myelotoxicity than that of serum creatinine.
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Affiliation(s)
- Taichi Hayashi
- Doctoral Program in Clinical Sciences, Division of Clinical Immunology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan.
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Polymorphisms within the folate pathway predict folate concentrations but are not associated with disease activity in rheumatoid arthritis patients on methotrexate. Pharmacogenet Genomics 2010; 20:367-76. [DOI: 10.1097/fpc.0b013e3283398a71] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Katchamart W, Bourré-Tessier J, Donka T, Drouin J, Rohekar G, Bykerk VP, Haraoui B, Leclerq S, Mosher DP, Pope JE, Shojania K, Thomson J, Thorne JC, Bombardier C. Canadian recommendations for use of methotrexate in patients with rheumatoid arthritis. J Rheumatol 2010; 37:1422-30. [PMID: 20516029 DOI: 10.3899/jrheum.090978] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To develop recommendations for the use of methotrexate (MTX) in patients with rheumatoid arthritis. METHODS Canadian rheumatologists who participated in the international 3e Initiative in Rheumatology (evidence, expertise, exchange) in 2007-2008 formulated 5 unique Canadian questions. A bibliographic team systematically reviewed the relevant literature on these 5 topics. An expert committee consisting of 26 rheumatologists from across Canada was convened, and a set of recommendations was proposed based on the results of systematic reviews combined with expert opinions using a nominal group consensus process. RESULTS The 5 questions addressed drug interactions, predictors of response, strategies to reduce non-serious side effects, variables to assess clinical response, and incorporating patient preference into decision-making. The systematic review retrieved 93 pertinent articles; this evidence was presented to the expert committee during the interactive workshop. After extensive discussion and voting, a total of 9 recommendations were formulated: 2 on drug interactions, 1 on predictors of response, 2 on strategies to reduce non-serious side effects, 3 on variables to assess clinical response, and 1 on incorporating patient preferences into decision-making. The level of evidence and the strength of recommendations are reported. Agreement among panelists ranged from 85% to 100%. CONCLUSION Nine recommendations pertaining to the use of MTX in daily practice were developed using an evidence-based approach followed by expert/physician consensus with high level of agreement.
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Bourré-Tessier J, Haraoui B. Methotrexate drug interactions in the treatment of rheumatoid arthritis: a systematic review. J Rheumatol 2010; 37:1416-21. [PMID: 20436072 DOI: 10.3899/jrheum.090153] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Patients with rheumatoid arthritis (RA) often have comorbidities that require multiple medications. Several of these medications may alter the efficacy or increase the toxicity of methotrexate (MTX). The purpose of our study was to determine which drugs used in combination with MTX (excluding disease modifying antirheumatic drugs, folic and folinic acid, corticosteroids, and biologic agents) enhance side effects or toxicity of MTX or lower its efficacy. METHODS A systematic literature search was performed with Medline, Embase, Cochrane Register and Database, and abstracts from the 2006/2007 annual congresses of the American College of Rheumatology and the European League Against Rheumatism. A manual search of the citation lists of retrieved publications was performed. RESULTS Of the 1172 articles identified, 67 were included: 21 pharmacokinetics studies, 5 observational studies, and 78 case reports. Most medications do not significantly affect the pharmacokinetics profile of MTX. Among the clinical studies, cytopenia and elevation of liver enzymes were the main reported toxicities. The use of trimethoprim-sulfamethoxazole (TMP-SMX) was mentioned as a risk factor for developing cytopenia in one observational study and in 17 case reports. Thirty case reports of cytopenia were attributed to the use of concomitant nonsteroidal antiinflammatory drugs, including acetylsalicylic acid. Two studies described mild abnormalities of liver enzymes with the use of isoniazid, and one study with the use of high-dose ASA. CONCLUSION Based on the published literature, MTX has limited drug interactions, with the exception of TMP-SMX and high-dose ASA, which can exacerbate toxicity of MTX. The clinical significance of these interactions has not been substantiated by extensive clinical observations.
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Affiliation(s)
- Josiane Bourré-Tessier
- Department of Medicine, Centre Hospitalier de l'Université de Montréal, Université de Montréal,Montréal, Québec, Canada.
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