100 results on '"Coblyn, J."'
Search Results
2. Prevalence of labral tears and cartilage loss in patients with mechanical symptoms of the hip: evaluation using MR arthrography
- Author
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Neumann, G., Mendicuti, A.D., Zou, K.H., Minas, T., Coblyn, J., Winalski, C.S., and Lang, P.
- Published
- 2007
- Full Text
- View/download PDF
3. Measuring quality of care for rheumatic diseases using an electronic medical record
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Agnew-Blais, J C, Coblyn, J S, Katz, J N, Anderson, R J, Mehta, J, and Solomon, D H
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- 2009
- Full Text
- View/download PDF
4. Associations between Human leukocyte antigen, PTPN22, CTLA4 genotypes and rheumatoid arthritis phenotypes of autoantibody status, age at diagnosis and erosions in a large cohort study
- Author
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Karlson, E W, Chibnik, L B, Cui, J, Plenge, R M, Glass, R J, Maher, N E, Parker, A, Roubenoff, R, Izmailova, E, Coblyn, J S, Weinblatt, M E, and Shadick, N A
- Published
- 2008
- Full Text
- View/download PDF
5. Opposing effects of the D70 mutation and the shared epitope in HLA-DR4 on disease activity and certain disease phenotypes in rheumatoid arthritis
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Shadick, N A, Heller, J E, Weinblatt, M E, Maher, N E, Cui, J, Ginsburg, G, Coblyn, J, Anderson, R, Solomon, D H, Roubenoff, R, and Parker, A
- Published
- 2007
6. The effects of cyclosporin A on eicosanoid excretion in patients with rheumatoid arthritis
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Weinblatt, M., Helfgott, S., Coblyn, J., Spragg, J., Uedelhoven, W.M., Tumeh, S., Sperling, R., Lorenz, R., Maier, A., and Weber, P.
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Rheumatoid arthritis -- Drug therapy ,Cyclosporine -- Adverse and side effects ,Kidneys ,Health - Abstract
Various studies have shown the effectiveness of the drug cyclosporin A in treating active rheumatoid arthritis, a joint disease characterized by inflammation, stiffness, and swelling of the joints; overgrowth of cartilage tissue; and pain. A frequent side effect of cyclosporin A treatment is nephrotoxicity, or adverse effects on the kidney. The mechanism underlying cyclosporin A-induced nephrotoxicity is not known, but may involve changes in the kidney metabolism of eicosanoids, metabolites of arachidonic acid. Eicosanoids include prostaglandins, thromboxane, and leukotrienes, which are natural factors involved in the regulation of various cell processes. The effects of cyclosporin A on the excretion of eicosanoids by the kidneys were assessed in RA patients who were not being treated with nonsteroidal anti-inflammatory drugs. The blood levels of creatinine, a nonprotein blood factor that increases in advanced kidney disease, were 32 percent above the levels measured at the start of the study. Blood flow through the kidney had decreased by 21 percent, and the glomerular filtration rate, an index of the speed at which blood is processed by the kidney, was decreased by 16 percent. Cyclosporin A treatment was associated with an increase in only one type of eicosanoid, namely 2,3-dinor thromboxane B2. These findings show that cyclosporin A treatment is associated with a specific increase in thromboxane B2 metabolite, which is correlated with decreased blood flow through the kidney. (Consumer Summary produced by Reliance Medical Information, Inc.)
- Published
- 1991
7. The Effect of Cyclosporine on Urinary Kallikrein Excretion in Patients with Rheumatoid Arthritis
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Spragg, J., Coblyn, J. S., Fraser, P. A., Austen, K. F., Weinblatt, M. E., Abe, Keishi, editor, Moriya, Hiroshi, editor, and Fujii, Setsuro, editor
- Published
- 1989
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8. Genome-wide association study meta-analysis identifies seven new rheumatoid arthritis risk loci
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Stahl, E.A., Raychaudhuri, S., Remmers, E.F., Xie, G., Eyre, S., Thomson, B.P., Li, Y.H., Kurreeman, F.A.S., Zhernakova, A., Hinks, A., Guiducci, C., Chen, R., Alfredsson, L., Amos, C.I., Ardlie, K.G., Barton, A., Bowes, J., Brouwer, E., Burtt, N.P., Catanese, J.J., Coblyn, J., Coenen, M.J.H., Costenbader, K.H., Criswell, L.A., Crusius, J.B.A., Cui, J., Bakker, P.I.W. de, Jager, P.L. de, Ding, B., Emery, P., Flynn, E., Harrison, P., Hocking, L.J., Huizinga, T.W.J., Kastner, D.L., Ke, X.Y., Lee, A.T., Liu, X.D., Martin, P., Morgan, A.W., Padyukov, L., Posthumus, M.D., Radstake, T.R.D.J., Reid, D.M., Seielstad, M., Seldin, M.F., Shadick, N.A., Steer, S., Tak, P.P., Thomson, W., Helm-van Mil, A.H.M. van der, Horst-Bruinsma, I.E. van der, Schoot, C.E. van der, Riel, P.L.C.M. van, Weinblatt, M.E., Wilson, A.G., Wolbink, G.J., Wordsworth, B.P., Wijmenga, C., Karlson, E.W., Toes, R.E.M., Vries, N. de, Begovich, A.B., Worthington, J., Siminovitch, K.A., Gregersen, P.K., Klareskog, L., Plenge, R.M., BIRAC Consortium, and YEAR Consortium
- Subjects
systemic-lupus-erythematosus susceptibility loci celiac-disease variants gene common region polymorphisms confirmation replication - Abstract
To identify new genetic risk factors for rheumatoid arthritis, we conducted a genome-wide association study meta-analysis of 5,539 autoantibody-positive individuals with rheumatoid arthritis (cases) and 20,169 controls of European descent, followed by replication in an independent set of 6,768 rheumatoid arthritis cases and 8,806 controls. Of 34 SNPs selected for replication, 7 new rheumatoid arthritis risk alleles were identified at genome-wide significance (P < 5 x 10(-8)) in an analysis of all 41,282 samples. The associated SNPs are near genes of known immune function, including IL6ST, SPRED2, RBPJ, CCR6, IRF5 and PXK. We also refined associations at two established rheumatoid arthritis risk loci (IL2RA and CCL21) and confirmed the association at AFF3. These new associations bring the total number of confirmed rheumatoid arthritis risk loci to 31 among individuals of European ancestry. An additional 11 SNPs replicated at P < 0.05, many of which are validated autoimmune risk alleles, suggesting that most represent genuine rheumatoid arthritis risk alleles.
- Published
- 2010
9. Routinely measuring and reporting pneumococcal vaccination among immunosuppressed rheumatology outpatients: the first step in improving quality
- Author
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Desai, S. P., primary, Turchin, A., additional, Szent-Gyorgyi, L. E., additional, Weinblatt, M., additional, Coblyn, J., additional, Solomon, D. H., additional, and Kachalia, A., additional
- Published
- 2010
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10. Concurrent Oral 3 - Genetics and Epidemiology [OP16-OP23]: OP16. Genetic Variation in the Dream Pain Modulation Pathway is Associated with the Extent of Musculoskeletal Pain
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Holliday, K. L., primary, McBeth, J., additional, Thomson, W., additional, Goodson, N. J., additional, Smith, B. H., additional, Goebel, A., additional, Goulston, L. M., additional, Soni, A., additional, White, K. M., additional, Kiran, A., additional, Javaid, M. K., additional, Hart, D. J., additional, Spector, T. D., additional, Arden, N. K., additional, Stahl, E., additional, Eyre, S., additional, Hinks, A., additional, Barton, A., additional, Flynn, E., additional, Lee, A., additional, Coblyn, J., additional, Xie, G., additional, Padyukov, L., additional, Chen, R., additional, Siminovitch, K., additional, Klareskog, L., additional, Raychaudhuri, S., additional, Gregersen, P., additional, Plenge, R., additional, Worthington, J., additional, Chen, Y., additional, Dawes, P. T., additional, Mattey, D. L., additional, Camacho, E., additional, Farragher, T., additional, Lunt, M., additional, Verstappen, S., additional, Bunn, D., additional, Symmons, D., additional, Mirjafari, H., additional, Verstappen, S. M., additional, Charlton-Menys, V., additional, Marshall, T., additional, Edlin, H., additional, Wilson, P., additional, Symmons, D. P., additional, Bruce, I. N., additional, Moncrieffe, H., additional, Martin, P., additional, Lal, S. D., additional, Ursu, S., additional, Kassoumeri, L., additional, and Wedderburn, L. R., additional
- Published
- 2010
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11. Measuring quality of care for rheumatic diseases using an electronic medical record
- Author
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Agnew-Blais, J C, primary, Coblyn, J S, additional, Katz, J N, additional, Anderson, R J, additional, Mehta, J, additional, and Solomon, D H, additional
- Published
- 2008
- Full Text
- View/download PDF
12. Associations between Human leukocyte antigen, PTPN22, CTLA4 genotypes and rheumatoid arthritis phenotypes of autoantibody status, age at diagnosis and erosions in a large cohort study
- Author
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Karlson, E W, primary, Chibnik, L B, additional, Cui, J, additional, Plenge, R M, additional, Glass, R J, additional, Maher, N E, additional, Parker, A, additional, Roubenoff, R, additional, Izmailova, E, additional, Coblyn, J S, additional, Weinblatt, M E, additional, and Shadick, N A, additional
- Published
- 2007
- Full Text
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13. Co-existing sarcoidosis, systemic lupus erythematosus and the antiphospholipid antibody syndrome.
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Wesemann, D. R., Costenbader, K. H., and Coblyn, J. S.
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SARCOIDOSIS ,SYSTEMIC lupus erythematosus ,PHOSPHOLIPID antibodies ,ANTIPHOSPHOLIPID syndrome ,AUTOIMMUNE diseases - Abstract
Sarcoidosis, systemic lupus erythematosus (SLE) and antiphospholipid antibody syndrome (APS) are chronic conditions of immune dysregulation whose aetiologies remain mysterious. Expression of sarcoidosis and SLE within individuals has been reported in a handful of cases in the last 60 years. In this study, we report two cases of sarcoidosis and SLE occurring together, and each case demonstrated complications associated with the presence of anticardiolipin antibodies. Clinical, serological and pathological findings confirmed the diagnoses in each case and both patients improved with therapy. The association of sarcoidosis, SLE and APS is unique and may present difficult therapeutic options, as well as to shed light on their immunopathogenesis. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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14. Management of glucocorticoid-induced osteoporosis in patients with rheumatoid arthritis: rates and predictors of care in an academic rheumatology practice.
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Solomon DH, Katz JN, Jacobs JP, La Tourette AM, and Coblyn J
- Published
- 2002
15. Bronchiectasis. A late feature of severe rheumatoid arthritis.
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Shadick, N A, Fanta, C H, Weinblatt, M E, O'Donnell, W, and Coblyn, J S
- Published
- 1994
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16. Extended haplotypes of chromosome 6 in adult rheumatoid arthritis.
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Raum, D., Awdeh, Z., Glass, D., Kammer, G., Khan, M. A., Coblyn, J. S., Weinblatt, M., Holdsworth, D., Strong, L., Rossen, R. D., Brewer, E., Yunis, E., and Alper, C. A.
- Published
- 1984
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17. Thrombotic thrombocytopenic purpura and systemic lupus erythematosus.
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Fox, D A, Faix, J D, Coblyn, J, Fraser, P, Smith, B, and Weinblatt, M E
- Abstract
We report two patients with systemic lupus erythematosus who subsequently developed thrombotic thrombocytopenic purpura. In each case the coexistence of these two conditions was confirmed by pathological findings. Both patients responded to treatment, but one eventually died. A review of the literature suggests a possible relationship between the two disorders. [ABSTRACT FROM PUBLISHER]
- Published
- 1986
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18. Cleavage of fibrinogen by the human neutrophil neutral peptide-generating protease.
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Wintroub, B U, Coblyn, J S, Kaempfer, C E, and Austen, K F
- Abstract
The human neutrophil peptide-generating protease, which generates a low molecular weight vasoactive peptide from a plasma protein substrate, is directly fibrinolytic and cleaves human fibrinogen in a manner distinct from plasmin. Fibrinogen was reduced from 340,000 Mr to derivatives of 270,000-325,000 Mr during interaction with the protease at enzyme-to-substrate ratios of 0.3 or 1.0 microgram/1.0 mg. The 310,000-325,000 Mr cleavage fragments exhibited prolonged thrombin-induced clotting activity but were able to be coagulated, whereas the 270,000-290,000 Mr fragments were not able to be coagulated. Anticoagulants were not generated at either enzyme dose. As analyzed by sodium dodecyl sulfate/polyacrylamide gel electrophoresis in 4-30% gradient gels and 10% gels stained for protein and carbohydrate, the diminution to 310,000-325,000 Mr and the prolongation of thrombin-induced clotting time resulted from cleavage of the fibrinogen A alpha chain. The further decrease in size to 270,000-290,000 Mr was associated with B beta-chain and gamma-chain cleavage and an inability to form gamma-gamma dimers. The neutral peptide-generating protease, a distinct human neutrophil neutral protease with fibrinolytic and fibrinogenolytic activities comparable to those of plasmin on a weight basis, cleaves fibrinogen in a manner that is distinct from the action of plasmin, leukocyte elastase, and leukocyte granule extracts. It may be that the concerted action of this neutrophil protease to generate a vasoactive peptide and to digest fibrinogen and fibrin facilitates neutrophil movement through vascular and extravascular sites.
- Published
- 1980
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19. Very late activation antigens on rheumatoid synovial fluid T lymphocytes. Association with stages of T cell activation.
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Hemler, M E, primary, Glass, D, additional, Coblyn, J S, additional, and Jacobson, J G, additional
- Published
- 1986
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20. The Association Between High-Sensitivity Cardiac Troponin T and Major Adverse Cardiovascular Events in Rheumatoid Arthritis.
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Weber BN, Weisenfeld D, Jeffway M, Liu F, McDermott G, Coblyn J, Weinblatt ME, Shadick N, Di Carli M, and Liao KP
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- Humans, Female, Male, Middle Aged, Aged, Arthritis, Rheumatoid blood, Arthritis, Rheumatoid complications, Troponin T blood, Cardiovascular Diseases etiology, Cardiovascular Diseases blood, Biomarkers blood
- Published
- 2024
- Full Text
- View/download PDF
21. Reasons for multiple biologic and targeted synthetic DMARD switching and characteristics of treatment refractory rheumatoid arthritis.
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McDermott GC, DiIorio M, Kawano Y, Jeffway M, MacVicar M, Dahal K, Moon SJ, Seyok T, Coblyn J, Massarotti E, Weinblatt ME, Weisenfeld D, and Liao KP
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- Humans, Female, Male, Middle Aged, Aged, Adult, Arthritis, Rheumatoid drug therapy, Antirheumatic Agents therapeutic use, Drug Substitution, Biological Products therapeutic use
- Abstract
Objective: Switching biologic and targeted synthetic DMARD (b/tsDMARD) medications occurs commonly in RA patients, however data are limited on the reasons for these changes. The objective of the study was to identify and categorize reasons for b/tsDMARD switching and investigate characteristics associated with treatment refractory RA., Methods: In a multi-hospital RA electronic health record (EHR) cohort, we identified RA patients prescribed ≥1 b/tsDMARD between 2001 and 2017. Consistent with the EULAR "difficult to treat" (D2T) RA definition, we further identified patients who discontinued ≥2 b/tsDMARDs with different mechanisms of action. We performed manual chart review to determine reasons for medication discontinuation. We defined "treatment refractory" RA as not achieving low disease activity (<3 tender or swollen joints on <7.5 mg of daily prednisone equivalent) despite treatment with two different b/tsDMARD mechanisms of action. We compared demographic, lifestyle, and clinical factors between treatment refractory RA and b/tsDMARD initiators not meeting D2T criteria., Results: We identified 6040 RA patients prescribed ≥1 b/tsDMARD including 404 meeting D2T criteria. The most common reasons for medication discontinuation were inadequate response (43.3 %), loss of efficacy (25.8 %), and non-allergic adverse events (13.7 %). Of patients with D2T RA, 15 % had treatment refractory RA. Treatment refractory RA patients were younger at b/tsDMARD initiation (mean 47.2 vs. 55.2 years, p < 0.001), more commonly female (91.8% vs. 76.1 %, p = 0.006), and ever smokers (68.9% vs. 49.9 %, p = 0.005). No RA clinical factors differentiated treatment refractory RA patients from b/tsDMARD initiators., Conclusions: In a large EHR-based RA cohort, the most common reasons for b/tsDMARD switching were inadequate response, loss of efficacy, and nonallergic adverse events (e.g. infections, leukopenia, psoriasis). Clinical RA factors were insufficient for differentiating b/tsDMARD responders from nonresponders., Competing Interests: Declaration of competing interest MEW reports research support from Bristol Myers Squibb, Aqtual, Abbvie, and Janssen; consultancy for Abbvie, Aclaris, Amgen, Aqtual, Bristol Myers Squibb, CorEvitas, Glaxo Smith Kline, Gilead, Horizon, Johnson & Johnson, Lilly, Pfizer, Rani, Revolo, Saniofi, Scipher, Sci Rhom, Set Point, and Tremeau; and stock or stock options from Canfite, Inmedix, Scipher. Other authors report no competing interests., (Copyright © 2024. Published by Elsevier Inc.)
- Published
- 2024
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22. Pregnancy Intention Screening in Patients With Systemic Rheumatic Diseases: Pilot Testing a Standardized Assessment Tool.
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Pryor KP, Albert B, Desai S, Ritter SY, Tarter L, Coblyn J, Bermas BL, Santacroce LM, Dutton C, Braaten KP, Pace LE, Rexrode K, Janiak E, and Feldman CH
- Abstract
Objective: Systemic rheumatic conditions affect reproductive-aged patients and often require potentially teratogenic medications. We assessed the feasibility and impact of a standardized pregnancy intention screening question (One Key Question [OKQ]) in a large academic rheumatology practice., Methods: This 6-month pilot quality improvement initiative prompted rheumatologists to ask female patients aged 18 to 49 years about their pregnancy intentions using OKQ. We administered surveys to assess rheumatologists' barriers to and comfort with reproductive health issues. We performed chart reviews to assess uptake and impact on documentation, comparing charts with OKQ documented with 100 randomly selected charts eligible for pregnancy intention screening but without OKQ documented., Results: When we compared 32 of 43 preimplementation responses with 29 of 41 postimplementation responses, the proportion of rheumatologists who reported they were very comfortable with assessing their patients' reproductive goals increased (31%-38%) and the proportion reporting obstetrics and gynecology (OB/GYN) referral challenges as barriers to discussing reproductive goals decreased (41%-21%). During the implementation period, 83 of 957 (9%) eligible patients had OKQ documented in their chart. Female providers were more likely to screen than male providers (odds ratio 2.42, 95% confidence interval 1.21-4.85). Screened patients were more likely to have their contraceptive method documented (P < 0.001) and more likely to have been referred to OB/GYN for follow-up (P = 0.003) compared with patients who were not screened with OKQ., Conclusion: Although uptake was low, this tool improved provider comfort with assessing reproductive goals, the quality of documentation, and the likelihood of OB/GYN referral. Future studies should examine whether automated medical record alerts to prompt screening increase uptake., (© 2022 The Authors. ACR Open Rheumatology published by Wiley Periodicals LLC on behalf of American College of Rheumatology.)
- Published
- 2022
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23. Divergence of Cardiovascular Biomarkers of Lipids and Subclinical Myocardial Injury Among Rheumatoid Arthritis Patients With Increased Inflammation.
- Author
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Weber B, He Z, Yang N, Playford MP, Weisenfeld D, Iannaccone C, Coblyn J, Weinblatt M, Shadick N, Di Carli M, Mehta NN, Plutzky J, and Liao KP
- Subjects
- Aged, Apolipoprotein A-I metabolism, Apolipoproteins B metabolism, Asymptomatic Diseases, C-Reactive Protein metabolism, Cardiovascular Diseases metabolism, Cholesterol metabolism, Female, Heart Disease Risk Factors, Humans, Interleukin-6 metabolism, Male, Middle Aged, Prospective Studies, Receptors, Tumor Necrosis Factor, Type II metabolism, Risk Assessment, Triglycerides metabolism, Arthritis, Rheumatoid metabolism, Cholesterol, LDL metabolism, Heart Diseases metabolism, Inflammation metabolism, Myocardium metabolism, Natriuretic Peptide, Brain metabolism, Peptide Fragments metabolism, Troponin T metabolism
- Abstract
Objective: Patients with rheumatoid arthritis (RA) are 1.5 times more likely to develop cardiovascular disease (CVD) attributed to chronic inflammation. A decrease in inflammation in patients with RA is associated with increased low-density lipoprotein (LDL) cholesterol. This study was undertaken to prospectively evaluate the changes in lipid levels among RA patients experiencing changes in inflammation and determine the association with concomitant temporal patterns in markers of myocardial injury., Methods: A total of 196 patients were evaluated in a longitudinal RA cohort, with blood samples and high-sensitivity C-reactive protein (hsCRP) levels measured annually. Patients were stratified based on whether they experienced either a significant increase in inflammation (an increase in hsCRP of ≥10 mg/liter between any 2 time points 1 year apart; designated the increased inflammation cohort [n = 103]) or decrease in inflammation (a decrease in hsCRP of ≥10 mg/liter between any 2 time points 1 year apart; designated the decreased inflammation cohort [n = 93]). Routine and advanced lipids, markers of inflammation (interleukin-6, hsCRP, soluble tumor necrosis factor receptor II), and markers of subclinical myocardial injury (high-sensitivity cardiac troponin T [hs-cTnT], N-terminal pro-brain natriuretic peptide) were measured., Results: Among the patients in the increased inflammation cohort, the mean age was 59 years, 81% were women, and the mean RA disease duration was 17.9 years. The average increase in hsCRP levels was 36 mg/liter, and this increase was associated with significant reductions in LDL cholesterol, triglycerides, total cholesterol, apolipoprotein (Apo B), and Apo A-I levels. In the increased inflammation cohort at baseline, 45.6% of patients (47 of 103) had detectable circulating hs-cTnT, which further increased during inflammation (P = 0.02). In the decreased inflammation cohort, hs-cTnT levels remained stable despite a reduction in inflammation over follow-up. In both cohorts, hs-cTnT levels were associated with the overall estimated risk of CVD., Conclusion: Among RA patients who experienced an increase in inflammation, a significant decrease in routinely measured lipids, including LDL cholesterol, and an increase in markers of subclinical myocardial injury were observed. These findings highlight the divergence in biomarkers of CVD risk and suggest a role in future studies examining the benefit of including hs-cTnT for CVD risk stratification in RA., (© 2020, American College of Rheumatology.)
- Published
- 2021
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24. The Impact of Exercise, Lifestyle, and Clinical Factors on Perceived Cognitive Function in Patients with Rheumatoid Arthritis: Results from a Prospective Cohort Study.
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Shadick NA, Katz P, Iannaccone CI, Maica G, Coblyn J, Weinblatt ME, and Cui J
- Abstract
Objective: Lifestyle factors, such as inactivity and obesity, contribute to cognitive decline in the general population, but little is known about how these factors may affect individuals with a chronic inflammatory condition such as rheumatoid arthritis (RA). We studied the clinical and functional risk factors related to a worsening of perceived cognitive function in patients with RA., Methods: We collected clinical and functional questionnaire data over 10 years in a prospective RA cohort including yearly self-reported memory, concentration, and word-finding difficulties graded from "never" to "often." Generalized estimating equation models examined the role of exercise (defined as those meeting the Department of Health and Human Services physical activity guidelines of 75 minutes of vigorous or 150 minutes of moderate aerobic activity per week), body mass index (BMI), sleep, depression (Mental Health Index-Depression), Disease Activity Score (DAS)28-c-reactive protein (CRP)3 score, disease-modifying antirheumatic drug, and corticosteroid use from the previous year as predictors of cognitive complaints that progressed to "often" compared with the previous year (the first year ( T
i ) progressed to "often" 1 year later ( Ti +1 ))., Results: Of 1219 RA subjects, 127 (10.4%) described either poor memory, concentration, or word-finding difficulties as affecting them "often" at study entry. RA patients (n = 1092, mean age = 56.5 years, 82% female, 58% college educated) were less likely to report word-finding difficulties, poor memory, and concentration as "often" if they were physically active ( p = 0.0001, P = 0.01, P < 0.0001, respectively). Female RA patients developed more concentration complaints compared with males ( P = 0.03); patients taking an anti-tumor necrosis factor therapy were less likely to complain of poor memory ( P = 0.01). Sleep, BMI, fatigue, depression, DAS28-CRP3, methotrexate, and corticosteroid use were not independently associated with a worsening of any cognitive complaints., Conclusion: RA patients who are physically active are less likely to report cognitive difficulties. Our study suggests potential modifiable risk factors for the prevention of cognitive dysfunction in RA., (© 2019 The Authors. ACR Open Rheumatology published by Wiley Periodicals, Inc. on behalf of American College of Rheumatology.)- Published
- 2019
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25. Impact of Changes in Inflammation on Estimated Ten-Year Cardiovascular Risk in Rheumatoid Arthritis.
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Yu Z, Yang N, Everett BM, Frits M, Iannaccone C, Coblyn J, Weinblatt M, Shadick N, Solomon DH, and Liao KP
- Subjects
- Arthritis, Rheumatoid complications, Biomarkers blood, Female, Humans, Inflammation, Male, Middle Aged, Natriuretic Peptide, Brain blood, Peptide Fragments blood, Prospective Studies, Risk Assessment methods, Risk Factors, Time Factors, Arthritis, Rheumatoid blood, C-Reactive Protein analysis, Cardiovascular Diseases etiology, Risk Assessment statistics & numerical data
- Abstract
Objective: Current validated cardiovascular (CV) risk estimates were developed in populations with relatively stable levels of inflammation, whereas patients with rheumatoid arthritis (RA) routinely experience significant changes in inflammation. This study was undertaken to test whether changes in inflammation affect estimated CV risk as measured using validated population-based risk calculators., Methods: Participants in a prospective RA cohort who experienced a decrease or an increase of ≥10 mg/liter in the C-reactive protein (CRP) level at 2 consecutive time points 1 year apart (CRP decrease group and CRP increase group, respectively) were included in this study. We estimated 10-year CV risk using the following calculators: Framingham Risk Score, 2013 American College of Cardiology/American Heart Association Atherosclerotic Cardiovascular Disease Risk Score, Reynolds Risk Score (RRS), and QRISK2. Of these calculators, only the RRS includes a variable addressing the CRP level. Paired t-tests were performed to compare risk scores at baseline and 1-year follow-up. We calculated the correlations between the changes in risk scores and changes in pro-B-type natriuretic peptide (pro BNP), a surrogate marker of CV risk., Results: One hundred eighty RA patients were included in the study (mean age 57.8 years, 84% female, 80% seropositive). Of the calculators studied, only the RRS was sensitive to changes in inflammation; an increase in inflammation was associated with increased estimated CV risk (P < 0.0001), and only the RRS was correlated with changes in proBNP (r = 0.17, P = 0.03)., Conclusion: Our data showed no significant change in CV risk estimated using validated general population CV risk calculators except for the RRS. These findings suggest that CV risk may be modulated by changes in inflammation in RA, which is not typically considered when using existing CV risk calculators., (© 2018, American College of Rheumatology.)
- Published
- 2018
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26. Fibromyalgia and the Prediction of Two-Year Changes in Functional Status in Rheumatoid Arthritis Patients.
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Kim H, Cui J, Frits M, Iannaccone C, Coblyn J, Shadick NA, Weinblatt ME, and Lee YC
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- Aged, Arthritis, Rheumatoid physiopathology, Arthritis, Rheumatoid psychology, Disease Progression, Female, Fibromyalgia physiopathology, Fibromyalgia psychology, Health Status, Humans, Linear Models, Male, Middle Aged, Multivariate Analysis, Prognosis, Prospective Studies, Severity of Illness Index, Surveys and Questionnaires, Time Factors, Arthritis, Rheumatoid diagnosis, Fibromyalgia diagnosis, Pain Measurement
- Abstract
Objective: Previous cross-sectional studies have shown that rheumatoid arthritis (RA) patients with fibromyalgia (FM) have higher disease activity, greater medical costs, and worse quality of life compared to RA patients without FM. We determined the impact of FM on 2-year changes in the functional status of RA patients in a prospective study., Methods: Subjects included participants in the Brigham Rheumatoid Arthritis Sequential Study who were enrolled in a substudy of the effects of pain in RA. Subjects completed questionnaires, including the Multi-Dimensional Health Assessment Questionnaire (MDHAQ) and Polysymptomatic Distress (PSD) scale, semiannually, and underwent physical examination and laboratory tests yearly., Results: Of the 156 included RA subjects, 16.7% had FM, while 83.3% did not. In a multivariable linear regression model adjusted for age, sex, race, baseline MDHAQ score, disease duration, rheumatoid factor/cyclic citrullinated peptide antibody seropositivity, disease activity, and psychological distress, RA patients with FM had a 0.14 greater 2-year increase in MDHAQ score than RA patients without FM (P = 0.021). In secondary analyses examining the association between continuous PSD scale score and change in MDHAQ, higher PSD scale scores were significantly associated with greater 2-year increases in MDHAQ score (β coefficient 0.013, P = 0.011)., Conclusion: Both the presence of FM and increasing number of FM symptoms predicted worsening of functional status among individuals with RA. Among individuals with RA and FM, the magnitude of the difference in changes in MDHAQ was 4- to 7-fold higher than typical changes in MDHAQ score among individuals with established RA., (© 2017, American College of Rheumatology.)
- Published
- 2017
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27. Ambulatory Medication Reconciliation: Using a Collaborative Approach to Process Improvement at an Academic Medical Center.
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Keogh C, Kachalia A, Fiumara K, Goulart D, Coblyn J, and Desai SP
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- Electronic Health Records, Humans, Inservice Training, Medicine, Primary Health Care, Academic Medical Centers organization & administration, Ambulatory Care organization & administration, Medication Reconciliation organization & administration, Quality Improvement organization & administration
- Abstract
Background: Incomplete medication reconciliation has been identified as a source of adverse drug events and a threat to patient safety. How best to measure and improve rates of medication reconciliation in ambulatory care remains unknown., Methods: An institutional collaborative improvement effort to develop and implement medication reconciliation processes was designed and facilitated across all 148 Brigham and Women's Hospital (Boston) ambulatory specialty practices: 63 underwent a more rigorous approach, a modified approach was undertaken in another 71 specialty practices, and a less intensive approach took place in the 14 primary care practices. The level of intervention varied on the basis of preexisting improvement infrastructure and practice prescription rates. Two electronically measured metrics were created to evaluate ambulatory visits to a provider in which there was a medication change: (1) Measure 1: the percentage of active medications prescribed by that provider that were reconciled; and (2) Measure 2: how often all the medications prescribed by that provider were reconciled. After the collaborative was completed, performance data were routinely shared with frontline staff and hospital leadership, and medication reconciliation rates became part of an institutional financial incentive program., Results: For Measure 1, specialty practices improved from 71% to 90% (September 2012-August 2014; 24-month period). Primary care practice performance improved from 62% to 91% (December 2012-August 2014; 20-month period). For Measure 2, overall performance across all ambulatory practices increased from 81% to 90% during the first 12 months of the financial incentive program (October 2013- September 2014)., Conclusion: A collaborative model of process improvement paired with financial incentives can successfully increase rates of ambulatory medication reconciliation.
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- 2016
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28. Improving Influenza and Pneumococcal Vaccination Rates in Ambulatory Specialty Practices.
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Pennant KN, Costa JJ, Fuhlbrigge AL, Sax PE, Szent-Gyorgyi LE, Coblyn J, and Desai SP
- Abstract
Background. Influenza and pneumococcal vaccinations are recommended for elderly and high-risk patients; however, rates of adherence are low. We sought to implement influenza and pneumococcal vaccine initiatives in 4 different ambulatory specialty practices, using 3 unique approaches. Methods. Four specialties with high-risk patient populations were selected for intervention: allergy (asthma), infectious disease (ID) (human immunodeficiency virus), pulmonary (chronic lung disease), and rheumatology (immunocompromised). Allergy and ID focused on influenza vaccination, and pulmonary and rheumatology focused on pneumococcal vaccination. We used 3 strategies for quality improvement: physician reminders, patient letters, and a nurse-driven model. Physicians were provided their performance data on a monthly basis and presented trended data on a quarterly basis at staff meetings. Results. All 4 specialties developed processes for improving vaccination rates with all showing some increase. Higher rates were achieved with pneumococcal vaccine than influenza. Pneumococcal vaccine rates showed steady improvement from year to year while influenza vaccine rates remained relatively constant. Allergy's influenza rate was 59% in 2011 and 64% in the 2014 flu season. Infectious disease influenza rates moved from 74% in the 2011 flu season to 86% for the 2014 season. Pneumococcal vaccine in pulmonary patients' rate was 52% at the start of intervention in February 2009 and 79% as of January 2015. Rheumatology rates rose from 50% in February 2009 to 87% in January 2015. Conclusions. Integrated routine workflow and performance data sharing can effectively engage specialists and staff in vaccine adherence improvement. Influenza vaccination may require other approaches to achieve the rates seen with pneumococcal vaccine.
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- 2015
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29. Rheumatoid arthritis quality measures and radiographic progression.
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Desai SP, Liu CC, Tory H, Norton T, Frits M, Lillegraven S, Weinblatt M, Coblyn J, Yazdany J, Shadick N, and Solomon DH
- Subjects
- Adult, Aged, Arthritis, Rheumatoid drug therapy, Disease Progression, Female, Humans, Male, Middle Aged, Quality Indicators, Health Care, Quality of Health Care, Radiography, Severity of Illness Index, Antirheumatic Agents therapeutic use, Arthritis, Rheumatoid diagnostic imaging
- Abstract
Objective: Documentation of quality measures (QMs) in rheumatoid arthritis (RA) is used as a surrogate for measure of quality of care, but the association of this documentation with radiographic outcomes is uncertain. We examined documentation of RA QMs, for disease activity and functional status and the association with radiographic outcomes., Methods: Data were analyzed for 438 RA patients in a longitudinal cohort with complete data on van der Heijde-modified Total Sharp Score (TSS). All rheumatologist (N = 18) notes in the electronic medical record during a 24-month period were reviewed for RA QMs. Any mention of disease activity categorized as low, moderate, or high was considered documentation of the QM for disease activity. Functional status QM documentation included any mention of the impact of RA on function. Change in TSS was quantified with progression defined as ≥1 unit per year. We compared percent of visits with an RA QM documented and mean change in TSS., Results: The mean age in the cohort was 56.9 years, disease duration was 10.8 years, baseline DAS28 score was 3.8 (±1.6), 67.7% were seropositive, and 33.9% used a biologic DMARD. Radiographic progression was observed in 28.5%. Disease activity was documented for 29.0% of patient visits and functional status in 74.7%; neither had any significant relationship to mean TSS change (both P > 0.10)., Conclusion: The documentation of RA QMs was infrequent and not associated with radiographic outcomes over 24 months., (Copyright © 2014 Elsevier Inc. All rights reserved.)
- Published
- 2014
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30. Increasing pneumococcal vaccination for immunosuppressed patients: a cluster quality improvement trial.
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Desai SP, Lu B, Szent-Gyorgyi LE, Bogdanova AA, Turchin A, Weinblatt M, Coblyn J, Greenberg JO, Kachalia A, and Solomon DH
- Subjects
- Aged, Female, Humans, Male, Middle Aged, Proportional Hazards Models, Rheumatology, Immunocompromised Host immunology, Pneumococcal Infections prevention & control, Pneumococcal Vaccines administration & dosage, Point-of-Care Systems, Quality Improvement
- Abstract
Objective: Pneumococcal vaccination is important for patients taking immunosuppressive medications, but prior studies suggest that most patients do not undergo vaccination. The aim of this study was to evaluate the effects of a point-of-care paper reminder form as a quality improvement (QI) strategy to increase the numbers of immunosuppressed patients being kept up-to-date with pneumococcal vaccination in a rheumatology practice., Methods: Selected rheumatologists at 5 ambulatory practice sites received a point-of-care paper reminder form to be applied to patients who were not up-to-date with pneumococcal vaccination. Interrupted time-series analyses were used to measure the effect of the intervention on the pneumococcal vaccination rates among patients, comparing the rates in the intervention group with those in a control group of rheumatologists who did not receive the intervention. Adjusted Cox proportional hazards models were examined to identify independent predictors of being up-to-date with pneumococcal vaccination., Results: We evaluated a total of 3,717 patients (66.0% with rheumatoid arthritis) who were taking immunosuppressive medications (74.1% women, mean age 53.7 years). Rheumatologists who received the intervention had a significant increase in the rate of patients who were up-to-date with pneumococcal vaccination, from 67.6% to 80.0% (P=0.006), in the time period following the intervention, compared to a rate that remained stable, from 52.3% to 52.0% (P=0.90), among patients in the nonintervention control group during this same time period. In regression models, positive predictors of being up-to-date with pneumococcal vaccination at the patient level included the following: having received the intervention (hazard ratio [HR] 3.58, 95% confidence interval [95% CI] 2.46-5.20), having a primary care physician affiliated with Brigham and Women's Hospital (HR 1.68, 95% CI 1.44-1.97), having a diagnosis of diabetes mellitus (HR 1.57, 95% CI 1.02-2.41), and being age 56-65 years at baseline, compared to age≤45 years (HR 1.24, 95% CI 1.01-1.51)., Conclusion: A QI strategy involving a simple point-of-care paper reminder form significantly increased the rate of being up-to-date with pneumococcal vaccination among patients receiving immunosuppressive medications in our rheumatology practices over a 6-month period., (Copyright © 2013 by the American College of Rheumatology.)
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- 2013
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31. Building a departmental quality program: a patient-based and provider-led approach.
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Szent-Gyorgyi LE, Coblyn J, Turchin A, Loscalzo J, and Kachalia A
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- Female, Humans, Models, Organizational, Patient-Centered Care organization & administration, Physician's Role, Program Development, Academic Medical Centers organization & administration, Hospital Departments organization & administration, Quality Assurance, Health Care organization & administration, Quality Improvement organization & administration
- Abstract
Quality improvement in health care today requires a comprehensive approach. Improvement efforts led by patients, payers, regulators, or health care providers face many barriers. Obstacles include selecting measures with clinical value, building physician acceptance, establishing routine and efficient measurement, and resolving competing clinical demands and work flow impediments. To meet these challenges, the Brigham and Women's Hospital Department of Medicine created a grassroots quality program guided by four main principles: improvement is led by frontline clinicians who select measures important to their patients, performance measurement is automated and accurate, appropriate resources are provided, and interventions are system based and without financial incentives for individual providers. The quality program has engaged the department's physicians from the start. Given the flexibility to define their own metrics according to their patients' needs, clinicians have selected measures related to prevention and wellness, which are often based on national standards. The central quality team facilitates measurement and reporting while providers focus on patient care. The subsequent production of meaningful, actionable data has been instrumental in building physician acceptance and in providing clinicians the opportunity to evaluate and monitor performance. The program's largest challenges have been in capturing meaningful data from electronic systems. The program's system-based focus encourages providers to develop solutions within the existing framework of clinic resources, primarily targeting work flows and processes, while minimizing large expenditures on additional staffing.
- Published
- 2011
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32. Routinely measuring and reporting pneumococcal vaccination among immunosuppressed rheumatology outpatients: the first step in improving quality.
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Desai SP, Turchin A, Szent-Gyorgyi LE, Weinblatt M, Coblyn J, Solomon DH, and Kachalia A
- Subjects
- Centers for Disease Control and Prevention, U.S., Female, Humans, Immunosuppressive Agents immunology, Male, Middle Aged, Outpatients, Pneumococcal Vaccines immunology, Quality of Health Care, Rheumatic Diseases drug therapy, Rheumatic Diseases immunology, United States, Immunocompromised Host immunology, Immunosuppressive Agents therapeutic use, Pneumococcal Infections prevention & control, Pneumococcal Vaccines therapeutic use, Rheumatic Diseases therapy
- Abstract
Objective: The Centers for Disease Control (CDC) recommends pneumococcal vaccination for immunocompromised patients. Data suggest that rates of vaccination in this population are not optimal. To support continuous quality improvement efforts, we electronically measured vaccination status among rheumatology outpatients over time., Methods: Using data from administrative (billing) and electronic health record sources, we identified rheumatology clinic patients seen between 1 February 2008 and 31 January 2010 and prescribed an immunosuppressive medication. CDC recommendations for pneumococcal vaccination were applied. We calculated the proportion of eligible patients who were up-to-date with pneumococcal vaccination: (i) while on an immunosuppressive medication and (ii) before newly starting an immunosuppressive medication in the last 12 months., Results: We identified 2763 rheumatology clinic patients on immunosuppressive medications, with 568 initiated in the last 12 months. The mean age was 57 years, 75% were female and 77% were Caucasian. The most frequent disease was RA (50%) and the most common immunosuppressive medication was MTX (59%). Of patients on immunosuppressive medications, 1491/2763 (54%) were up to date with pneumococcal vaccination. Among new initiators of immunosuppressive medications, 258/568 (45%) were vaccinated before starting the immunosuppressive medication. Patients treated by rheumatologists in practice for ≤10 years were more likely to be up to date with pneumococcal vaccination (72%) than those with providers in practice >10 years (52%, P < 0.001)., Conclusion: The proportion of patients who are up to date with documented pneumococcal vaccination was suboptimal in our rheumatology practice. The ability to continuously repeat electronic measurement permits us to initiate continuous quality improvement efforts.
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- 2011
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33. Defining quality of care in rheumatology: the American College of Rheumatology white paper on quality measurement.
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Saag KG, Yazdany J, Alexander C, Caplan L, Coblyn J, Desai SP, Harrington T Jr, Liu J, McNiff K, Newman E, and Olson R
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- Humans, Quality of Health Care trends, Rheumatology trends, Societies, Medical trends, United States, Quality of Health Care standards, Rheumatic Diseases therapy, Rheumatology standards, Societies, Medical standards
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- 2011
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34. Genome-wide association study meta-analysis identifies seven new rheumatoid arthritis risk loci.
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Stahl EA, Raychaudhuri S, Remmers EF, Xie G, Eyre S, Thomson BP, Li Y, Kurreeman FA, Zhernakova A, Hinks A, Guiducci C, Chen R, Alfredsson L, Amos CI, Ardlie KG, Barton A, Bowes J, Brouwer E, Burtt NP, Catanese JJ, Coblyn J, Coenen MJ, Costenbader KH, Criswell LA, Crusius JB, Cui J, de Bakker PI, De Jager PL, Ding B, Emery P, Flynn E, Harrison P, Hocking LJ, Huizinga TW, Kastner DL, Ke X, Lee AT, Liu X, Martin P, Morgan AW, Padyukov L, Posthumus MD, Radstake TR, Reid DM, Seielstad M, Seldin MF, Shadick NA, Steer S, Tak PP, Thomson W, van der Helm-van Mil AH, van der Horst-Bruinsma IE, van der Schoot CE, van Riel PL, Weinblatt ME, Wilson AG, Wolbink GJ, Wordsworth BP, Wijmenga C, Karlson EW, Toes RE, de Vries N, Begovich AB, Worthington J, Siminovitch KA, Gregersen PK, Klareskog L, and Plenge RM
- Subjects
- Autoantibodies administration & dosage, Genome-Wide Association Study, Humans, Polymorphism, Single Nucleotide, Risk Factors, Arthritis, Rheumatoid genetics, Genetic Loci, Genetic Predisposition to Disease
- Abstract
To identify new genetic risk factors for rheumatoid arthritis, we conducted a genome-wide association study meta-analysis of 5,539 autoantibody-positive individuals with rheumatoid arthritis (cases) and 20,169 controls of European descent, followed by replication in an independent set of 6,768 rheumatoid arthritis cases and 8,806 controls. Of 34 SNPs selected for replication, 7 new rheumatoid arthritis risk alleles were identified at genome-wide significance (P < 5 x 10(-8)) in an analysis of all 41,282 samples. The associated SNPs are near genes of known immune function, including IL6ST, SPRED2, RBPJ, CCR6, IRF5 and PXK. We also refined associations at two established rheumatoid arthritis risk loci (IL2RA and CCL21) and confirmed the association at AFF3. These new associations bring the total number of confirmed rheumatoid arthritis risk loci to 31 among individuals of European ancestry. An additional 11 SNPs replicated at P < 0.05, many of which are validated autoimmune risk alleles, suggesting that most represent genuine rheumatoid arthritis risk alleles.
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- 2010
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35. Development and initial validation of a self-assessed lupus organ damage instrument.
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Costenbader KH, Khamashta M, Ruiz-Garcia S, Perez-Rodriguez MT, Petri M, Elliott J, Manzi S, Karlson EW, Turner-Stokes T, Bermas B, Coblyn J, Massarotti E, Schur P, Fraser P, Navarro I, Hanly JG, Shaver TS, Katz RS, Chakravarty E, Fortin PR, Sanchez ML, Liu J, Michaud K, Alarcón GS, and Wolfe F
- Subjects
- Adult, Aged, Female, Humans, Lupus Erythematosus, Systemic complications, Male, Middle Aged, Quality of Life, Sensitivity and Specificity, Lupus Erythematosus, Systemic diagnosis, Severity of Illness Index, Surveys and Questionnaires
- Abstract
Objective: The Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index (SDI) is a validated instrument for assessing organ damage in systemic lupus erythematosus (SLE). Trained physicians must complete it, thus limiting utility where this is impossible., Methods: We developed and pilot tested a self-assessed organ damage instrument, the Lupus Damage Index Questionnaire (LDIQ), in 37 SLE subjects and 7 physicians. After refinement, 569 English-speaking SLE subjects and 14 rheumatologists from 11 international SLE clinics participated in validation. Subjects and physicians completed the instruments separately. We calculated sensitivity, specificity, Spearman's correlations, and agreement using the SDI as the gold standard. Six hundred five SLE participants in the community-based National Data Bank for Rheumatic Diseases (NDB) study completed the LDIQ and we assessed correlations with outcome and disability measures., Results: The mean LDIQ score was 3.3 (range 0-16) and the mean SDI score was 1.5 (range 0-9). The LDIQ had a moderately high correlation with the SDI (Spearman's r = 0.50, P < 0.001). Specificities of individual LDIQ items were >80%, except for neuropathy. Sensitivities were variable and lowest for damage, with <1% prevalence. Agreement between the SDI and LDIQ was >85% for all but neuropathy, reduced renal function, deforming arthritis, and alopecia. In the NDB, the LDIQ correlated well with the comorbidity index (r = 0.45), the Short Form 36 physical component scale (r = 0.43), the Medical Research Council dyspnea scale (r = 0.40), disability (r = 0.37), and the Systemic Lupus Erythematosus Activity Questionnaire score (r = 0.37)., Conclusion: The metric properties of the LDIQ are good compared with the SDI. It has construct validity and correlations with health assessments similar to the SDI. The LDIQ should allow expansion of SLE research. Its ultimate value will be determined in longitudinal studies.
- Published
- 2010
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36. Genetic variants at CD28, PRDM1 and CD2/CD58 are associated with rheumatoid arthritis risk.
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Raychaudhuri S, Thomson BP, Remmers EF, Eyre S, Hinks A, Guiducci C, Catanese JJ, Xie G, Stahl EA, Chen R, Alfredsson L, Amos CI, Ardlie KG, Barton A, Bowes J, Burtt NP, Chang M, Coblyn J, Costenbader KH, Criswell LA, Crusius JB, Cui J, De Jager PL, Ding B, Emery P, Flynn E, Harrison P, Hocking LJ, Huizinga TW, Kastner DL, Ke X, Kurreeman FA, Lee AT, Liu X, Li Y, Martin P, Morgan AW, Padyukov L, Reid DM, Seielstad M, Seldin MF, Shadick NA, Steer S, Tak PP, Thomson W, van der Helm-van Mil AH, van der Horst-Bruinsma IE, Weinblatt ME, Wilson AG, Wolbink GJ, Wordsworth P, Altshuler D, Karlson EW, Toes RE, de Vries N, Begovich AB, Siminovitch KA, Worthington J, Klareskog L, Gregersen PK, Daly MJ, and Plenge RM
- Subjects
- Case-Control Studies, Genetic Predisposition to Disease, Genotype, Humans, Polymorphism, Single Nucleotide, Positive Regulatory Domain I-Binding Factor 1, Risk Factors, Arthritis, Rheumatoid genetics, CD2 Antigens genetics, CD28 Antigens genetics, CD58 Antigens genetics, Genetic Variation, Repressor Proteins genetics
- Abstract
To discover new rheumatoid arthritis (RA) risk loci, we systematically examined 370 SNPs from 179 independent loci with P < 0.001 in a published meta-analysis of RA genome-wide association studies (GWAS) of 3,393 cases and 12,462 controls. We used Gene Relationships Across Implicated Loci (GRAIL), a computational method that applies statistical text mining to PubMed abstracts, to score these 179 loci for functional relationships to genes in 16 established RA disease loci. We identified 22 loci with a significant degree of functional connectivity. We genotyped 22 representative SNPs in an independent set of 7,957 cases and 11,958 matched controls. Three were convincingly validated: CD2-CD58 (rs11586238, P = 1 x 10(-6) replication, P = 1 x 10(-9) overall), CD28 (rs1980422, P = 5 x 10(-6) replication, P = 1 x 10(-9) overall) and PRDM1 (rs548234, P = 1 x 10(-5) replication, P = 2 x 10(-8) overall). An additional four were replicated (P < 0.0023): TAGAP (rs394581, P = 0.0002 replication, P = 4 x 10(-7) overall), PTPRC (rs10919563, P = 0.0003 replication, P = 7 x 10(-7) overall), TRAF6-RAG1 (rs540386, P = 0.0008 replication, P = 4 x 10(-6) overall) and FCGR2A (rs12746613, P = 0.0022 replication, P = 2 x 10(-5) overall). Many of these loci are also associated to other immunologic diseases.
- Published
- 2009
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37. Use of the T-SPOT.TB assay to detect latent tuberculosis infection among rheumatic disease patients on immunosuppressive therapy.
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Behar SM, Shin DS, Maier A, Coblyn J, Helfgott S, and Weinblatt ME
- Subjects
- Adult, Aged, Antirheumatic Agents adverse effects, Female, Humans, Immunoassay, Immunosuppressive Agents adverse effects, Interferon-gamma analysis, Male, Middle Aged, Reagent Kits, Diagnostic, Rheumatic Diseases complications, Rheumatic Diseases drug therapy, Tuberculosis immunology, Antirheumatic Agents therapeutic use, Immunocompromised Host, Immunosuppressive Agents therapeutic use, Rheumatic Diseases immunology, Tuberculosis diagnosis, Tumor Necrosis Factor-alpha antagonists & inhibitors
- Abstract
Objective: We evaluated the T-SPOT.TB assay to identify latent tuberculosis infection (LTBI) in patients with rheumatic disease receiving immunosuppressive medication including tumor necrosis factor (TNF) antagonists., Methods: A total of 200 patients seen in the Arthritis Center at Brigham and Women's Hospital were enrolled for study. Most patients were US-born women with rheumatoid arthritis. A medical history was obtained using a questionnaire, whole blood was drawn for the T-SPOT.TB assay, and tuberculin skin testing (TST) was performed., Results: Both tests were performed on 179 subjects, who had no history of a positive TST. All subjects had a strong response to the T-SPOT.TB test positive control, and there were no indeterminate results. Among these 179 subjects, 2 had a positive TST and 10 had a positive T-SPOT.TB test. No subject was positive for both tests. Patients with a positive T-SPOT.TB test did not have typical risk factors for LTBI based on clinical evaluation., Conclusion: The lack of concordance between the TST and the T-SPOT.TB assay may indicate that the immunoassay is more sensitive, particularly in a patient population taking immunosuppressive medications. It is equally likely that the low prevalence of LTBI in this low-risk population led to an increase in the false-positive rate despite the high sensitivity and specificity of the T-SPOT.TB assay. In the context of our patient population, the T-SPOT.TB assay is likely to be most useful in evaluation of patients with a positive TST, since these patients have a higher pretest probability of having LTBI.
- Published
- 2009
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38. Common variants at CD40 and other loci confer risk of rheumatoid arthritis.
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Raychaudhuri S, Remmers EF, Lee AT, Hackett R, Guiducci C, Burtt NP, Gianniny L, Korman BD, Padyukov L, Kurreeman FA, Chang M, Catanese JJ, Ding B, Wong S, van der Helm-van Mil AH, Neale BM, Coblyn J, Cui J, Tak PP, Wolbink GJ, Crusius JB, van der Horst-Bruinsma IE, Criswell LA, Amos CI, Seldin MF, Kastner DL, Ardlie KG, Alfredsson L, Costenbader KH, Altshuler D, Huizinga TW, Shadick NA, Weinblatt ME, de Vries N, Worthington J, Seielstad M, Toes RE, Karlson EW, Begovich AB, Klareskog L, Gregersen PK, Daly MJ, and Plenge RM
- Subjects
- Arthritis, Rheumatoid pathology, Case-Control Studies, Chromosome Mapping, Genetic Linkage, Genome, Human, Humans, Arthritis, Rheumatoid genetics, CD40 Antigens genetics, Chromosomes, Human genetics, Genetic Predisposition to Disease genetics, Haplotypes genetics, Polymorphism, Single Nucleotide genetics
- Abstract
To identify rheumatoid arthritis risk loci in European populations, we conducted a meta-analysis of two published genome-wide association (GWA) studies totaling 3,393 cases and 12,462 controls. We genotyped 31 top-ranked SNPs not previously associated with rheumatoid arthritis in an independent replication of 3,929 autoantibody-positive rheumatoid arthritis cases and 5,807 matched controls from eight separate collections. We identified a common variant at the CD40 gene locus (rs4810485, P = 0.0032 replication, P = 8.2 x 10(-9) overall, OR = 0.87). Along with other associations near TRAF1 (refs. 2,3) and TNFAIP3 (refs. 4,5), this implies a central role for the CD40 signaling pathway in rheumatoid arthritis pathogenesis. We also identified association at the CCL21 gene locus (rs2812378, P = 0.00097 replication, P = 2.8 x 10(-7) overall), a gene involved in lymphocyte trafficking. Finally, we identified evidence of association at four additional gene loci: MMEL1-TNFRSF14 (rs3890745, P = 0.0035 replication, P = 1.1 x 10(-7) overall), CDK6 (rs42041, P = 0.010 replication, P = 4.0 x 10(-6) overall), PRKCQ (rs4750316, P = 0.0078 replication, P = 4.4 x 10(-6) overall), and KIF5A-PIP4K2C (rs1678542, P = 0.0026 replication, P = 8.8 x 10(-8) overall).
- Published
- 2008
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39. Two independent alleles at 6q23 associated with risk of rheumatoid arthritis.
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Plenge RM, Cotsapas C, Davies L, Price AL, de Bakker PI, Maller J, Pe'er I, Burtt NP, Blumenstiel B, DeFelice M, Parkin M, Barry R, Winslow W, Healy C, Graham RR, Neale BM, Izmailova E, Roubenoff R, Parker AN, Glass R, Karlson EW, Maher N, Hafler DA, Lee DM, Seldin MF, Remmers EF, Lee AT, Padyukov L, Alfredsson L, Coblyn J, Weinblatt ME, Gabriel SB, Purcell S, Klareskog L, Gregersen PK, Shadick NA, Daly MJ, and Altshuler D
- Subjects
- Case-Control Studies, Female, Genome, Human, Humans, Male, Polymorphism, Single Nucleotide, Alleles, Arthritis, Rheumatoid genetics, Chromosomes, Human, Pair 6, Genetic Predisposition to Disease
- Abstract
To identify susceptibility alleles associated with rheumatoid arthritis, we genotyped 397 individuals with rheumatoid arthritis for 116,204 SNPs and carried out an association analysis in comparison to publicly available genotype data for 1,211 related individuals from the Framingham Heart Study. After evaluating and adjusting for technical and population biases, we identified a SNP at 6q23 (rs10499194, approximately 150 kb from TNFAIP3 and OLIG3) that was reproducibly associated with rheumatoid arthritis both in the genome-wide association (GWA) scan and in 5,541 additional case-control samples (P = 10(-3), GWA scan; P < 10(-6), replication; P = 10(-9), combined). In a concurrent study, the Wellcome Trust Case Control Consortium (WTCCC) has reported strong association of rheumatoid arthritis susceptibility to a different SNP located 3.8 kb from rs10499194 (rs6920220; P = 5 x 10(-6) in WTCCC). We show that these two SNP associations are statistically independent, are each reproducible in the comparison of our data and WTCCC data, and define risk and protective haplotypes for rheumatoid arthritis at 6q23.
- Published
- 2007
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40. Strategies for the prevention and treatment of osteoporosis in patients with rheumatoid arthritis.
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Phillips K, Aliprantis A, and Coblyn J
- Subjects
- Accidental Falls prevention & control, Adrenal Cortex Hormones adverse effects, Adrenal Cortex Hormones therapeutic use, Aged, Aged, 80 and over, Antirheumatic Agents therapeutic use, Bone Density Conservation Agents therapeutic use, Calcitonin therapeutic use, Calcium therapeutic use, Diphosphonates therapeutic use, Estrogen Replacement Therapy, Exercise, Female, Humans, Male, Osteoporosis etiology, Risk Factors, Risk Reduction Behavior, Vitamin D therapeutic use, Arthritis, Rheumatoid complications, Osteoporosis drug therapy, Osteoporosis prevention & control
- Abstract
Rheumatoid arthritis (RA) is a chronic disease that affects millions of patients worldwide. As better therapies emerge for treatment of this condition, patients with RA are living longer and are more likely to experience diseases associated with aging such as osteoporosis. The aetiology of osteoporosis in patients with RA is multifactorial, with some bone loss attributable to the underlying inflammatory disease. Patients may also experience bone loss that is a consequence of therapy with corticosteroids. Progress in the diagnosis and evaluation of osteoporosis has led to a greater awareness of this major health problem. There have also been many advances in our understanding of the pathophysiology of RA. However, recent studies have suggested that, despite our growing understanding of these diseases, therapies for preventing bone loss in this patient population are underutilised. Patients with RA, especially those taking corticosteroids or with persistent disease activity, must have their bone mass assessed with bone mineral density testing. RA patients with documented osteoporosis or those at high risk for the development of this potentially devastating complication should receive calcium and vitamin D supplementation as well as an anti-resorptive agent.
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- 2006
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41. Primary care compensation at an academic medical center: a model for the mixed-payer environment.
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Sussman AJ, Fairchild DG, Coblyn J, and Brennan TA
- Subjects
- Boston, Humans, Quality of Health Care, Salaries and Fringe Benefits economics, Academic Medical Centers economics, Physicians, Family economics, Reimbursement, Incentive
- Abstract
The authors' academic medical center, Brigham and Women's Hospital, Boston, Massachusetts, developed a primary care physician (PCP) salary incentive program for employed academic physicians. This program, first implemented in 1999, was needed to meet the financial imperatives placed on the institution by managed care and the Balanced Budget Act of 1997; its goal was to create a set of incentives for PCPs that is consistent with the mission of the academic center and helps motivate and reward PCP's work. The program sought to simultaneously increase productivity while optimizing resource utilization in a mixed-payer environment. The salary incentive program uses work relative-value units (wRVUs) as the measure of productivity. In addition to productivity-derived base pay, bonus incentives are added for efficient medical management, quality of care, teaching, and seniority. The authors report that there was significant concern from several members of the physician staff before the plan was implemented; they felt that the institution's PCPs were already operating at maximum clinical capacity. However, after the first year of operation of this plan, there was an overall 20% increase in PCP productivity. Increases were observed in all PCP subgroups when stratified by professional experience, clinical time commitment, and practice location. The authors conclude that the program has succeeded in giving incentives for academic PCPs to achieve under the growing demands for revenue self-sufficiency, managed care performance, quality of care, and academic commitment.
- Published
- 2001
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42. Leflunomide-associated weight loss in rheumatoid arthritis.
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Coblyn JS, Shadick N, and Helfgott S
- Subjects
- Aged, Arthritis, Rheumatoid metabolism, Female, Humans, Leflunomide, Male, Middle Aged, Oxidative Phosphorylation drug effects, Anti-Inflammatory Agents, Non-Steroidal adverse effects, Arthritis, Rheumatoid drug therapy, Isoxazoles adverse effects, Weight Loss drug effects
- Abstract
Objective: To determine the frequency of weight loss in patients treated with leflunomide for rheumatoid arthritis at an arthritis referral center., Methods: We queried 35 rheumatologists at the Robert Breck Brigham Arthritis Center to determine if weight loss had occurred as an adverse event in patients treated with leflunomide between November 1998 and January 2000. Five such patients were identified and their clinical course was reviewed., Results: Five of 70 patients who had begun leflunomide therapy had significant weight loss that could not be linked to other identifiable etiologies. The amount of weight loss was substantial in this group of patients, ranging from 19 pounds to 53 pounds. All patients had normal levels of thyroid-stimulating hormone and no other gastrointestinal complaints; evaluation revealed no other cause for the weight loss. Despite the significant weight loss, 4 of the 5 patients continued to take the drug due to its efficacy., Conclusion: Significant weight loss is a potential adverse event in patients with rheumatoid arthritis treated with leflunomide. Awareness of this may obviate the need for extensive medical evaluations.
- Published
- 2001
- Full Text
- View/download PDF
43. Hydroxychloroquine retinopathy despite regular ophthalmologic evaluation: a consecutive series.
- Author
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Bienfang D, Coblyn JS, Liang MH, and Corzillius M
- Subjects
- Aged, Color Perception drug effects, Female, Humans, Middle Aged, Ophthalmology methods, Physical Examination, Retinal Diseases physiopathology, Vision, Ocular drug effects, Antirheumatic Agents adverse effects, Hydroxychloroquine adverse effects, Retinal Diseases chemically induced
- Abstract
We describe a consecutive series of patients with hydroxychloroquine (HCQ) retinopathy. Their clinical features illustrate that with normal renal function there is no threshold for total dosage for HCQ toxicity; that color vision testing is important; that almost all patients complain of altered central vision as their first symptom; and that a normal optic fundus does not exclude the diagnosis. Finally, HCQ retinopathy may progress even when the agent is stopped.
- Published
- 2000
44. Pharmacokinetics, safety, and efficacy of combination treatment with methotrexate and leflunomide in patients with active rheumatoid arthritis.
- Author
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Weinblatt ME, Kremer JM, Coblyn JS, Maier AL, Helfgott SM, Morrell M, Byrne VM, Kaymakcian MV, and Strand V
- Subjects
- Adult, Alanine Transaminase blood, Anti-Inflammatory Agents, Non-Steroidal administration & dosage, Aspartate Aminotransferases blood, Diarrhea chemically induced, Drug Therapy, Combination, Female, Humans, Isoxazoles administration & dosage, Isoxazoles pharmacokinetics, Leflunomide, Liver enzymology, Male, Methotrexate administration & dosage, Methotrexate pharmacokinetics, Middle Aged, Nausea chemically induced, Patient Compliance, Treatment Outcome, Anti-Inflammatory Agents, Non-Steroidal therapeutic use, Arthritis, Rheumatoid drug therapy, Isoxazoles therapeutic use, Methotrexate therapeutic use
- Abstract
Objective: To examine the safety and pharmacokinetics of and clinical response to leflunomide, a de novo pyrimidine synthesis inhibitor, when administered to patients with active rheumatoid arthritis (RA) who have been receiving long-term methotrexate therapy., Methods: This was an open-label, 52-week study in which 30 patients with RA that remained active despite therapy with methotrexate at 17+/-4 mg/week (mean +/- SD) for > or =6 months were given leflunomide, 10-20 mg/day. Patients were assessed for adverse effects, pharmacokinetic measurements of leflunomide and methotrexate, and clinical response by American College of Rheumatology (ACR) 20% response criteria., Results: Twenty-three patients completed 1 year of treatment. No significant pharmacokinetic interactions between leflunomide and methotrexate were noted. This combination therapy was generally well tolerated clinically, with the exception of elevations of liver enzyme levels. Seven patients withdrew from the treatment regimen: 2 withdrawals were voluntary, 3 were due to persistent elevation of plasma transaminase levels, and 2 were due to lack of efficacy. Of the patients, 16 (53%) met ACR 20% response criteria. Two met ACR criteria for remission after 1 year., Conclusion: The combination of methotrexate and leflunomide has therapeutic potential in RA.
- Published
- 1999
- Full Text
- View/download PDF
45. Longterm prospective study of methotrexate in rheumatoid arthritis: conclusion after 132 months of therapy.
- Author
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Weinblatt ME, Maier AL, Fraser PA, and Coblyn JS
- Subjects
- Biopsy, Cross-Over Studies, Drug Therapy, Combination, Humans, Liver pathology, Longitudinal Studies, Methotrexate administration & dosage, Methotrexate adverse effects, Middle Aged, Prednisone administration & dosage, Prospective Studies, Treatment Outcome, Arthritis, Rheumatoid drug therapy, Methotrexate therapeutic use
- Abstract
Objective: To conclude observations of efficacy of longterm methotrexate (MTX) treatment of rheumatoid arthritis (RA)., Methods: Twenty-six patients with RA entered a prospective study of MTX in 1983. The study was completed after 132 months of therapy., Results: Significant improvement (p < 0.001) was noted in the number of painful joints, swollen joints, and physician and patient global assessments. There was 50% improvement in the joint pain index and joint swelling index in > 65% of the patients. A significant reduction in prednisone dose was achieved. Sixteen patients withdrew from the study. Toxicity led to 3 drug related withdrawals of study patients (alopecia 1; pneumonitis 2). At 132 months, 10 patients (38%) had completed the study; 3 patients (11%) discontinued due to MTX toxicity., Conclusion: MTX was an effective treatment for RA in this 132 month prospective study.
- Published
- 1998
46. N-[4-hydroxyphenyl] retinamide in rheumatoid arthritis: a pilot study.
- Author
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Gravallese EM, Handel ML, Coblyn J, Anderson RJ, Sperling RI, Karlson EW, Maier A, Ruderman EM, Formelli F, and Weinblatt ME
- Subjects
- Antineoplastic Agents adverse effects, Antineoplastic Agents pharmacology, Arthritis, Rheumatoid complications, Collagenases metabolism, Drug Administration Schedule, Female, Fenretinide adverse effects, Fenretinide pharmacology, Humans, Matrix Metalloproteinase 3, Metalloendopeptidases metabolism, Middle Aged, Pilot Projects, RNA, Messenger metabolism, Synovial Membrane enzymology, Treatment Outcome, Antineoplastic Agents administration & dosage, Arthritis, Rheumatoid drug therapy, Collagenases drug effects, Fenretinide administration & dosage, Metalloendopeptidases drug effects, RNA, Messenger drug effects, Synovial Membrane drug effects
- Abstract
Objective: To evaluate the efficacy and tolerability of N-[4 hydroxyphenyl] retinamide (4-HPR), a synthetic retinoid, in the treatment of rheumatoid arthritis (RA)., Methods: An uncontrolled, open clinical trial with synovial biopsy pre- and postmedication to evaluate the clinical effects of 4-HPR as well as its effects on metalloproteinase gene expression., Results: Twelve patients with severe, longstanding RA were enrolled in this study. Six patients withdrew before study completion, 2 because of drug toxicity, 2 because of a flare of RA, and 2 because of intercurrent medical problems. No patient met predetermined Paulus criteria treatment response, and there was no improvement in the laboratory parameters, except for a modest decrease in C-reactive protein. No decrease in messenger RNA for the metalloproteinases collagenase and stromelysin was seen in the 2 patients in whom paired synovial biopsies were obtained., Conclusion: No beneficial clinical effect was observed with the retinoid 4-HPR in the treatment of severe, longstanding RA at the 300 mg/day dosage studied. The use of higher dosages is precluded by the observed toxicities. The effect of this drug in patients with early or mild disease was not studied. Although this particular retinoid was not effective in this pilot study, the use of other retinoids in RA should still be considered.
- Published
- 1996
- Full Text
- View/download PDF
47. CAMPATH-1H, a humanized monoclonal antibody, in refractory rheumatoid arthritis. An intravenous dose-escalation study.
- Author
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Weinblatt ME, Maddison PJ, Bulpitt KJ, Hazleman BL, Urowitz MB, Sturrock RD, Coblyn JS, Maier AL, Spreen WR, and Manna VK
- Subjects
- Adult, Alemtuzumab, Antibodies, Monoclonal adverse effects, Antibodies, Monoclonal therapeutic use, Antibodies, Monoclonal, Humanized, Cohort Studies, Dose-Response Relationship, Immunologic, Drug Tolerance, Humans, Injections, Intravenous, Antibodies, Monoclonal administration & dosage, Antibodies, Monoclonal immunology, Antibodies, Neoplasm, Arthritis, Rheumatoid therapy
- Abstract
Objective: To evaluate the biologic response, tolerability, and potential clinical effect of a humanized antilymphocyte monoclonal antibody, CAMPATH-1H, in patients with rheumatoid arthritis (RA)., Methods: Forty adult patients with active, refractory RA were treated with CAMPATH-1H, given intravenously, in a multicenter, open, single-dose-escalation study. Patients were assigned to dose groups of 1, 3, 10, 30, 60, and 100 mg CAMPATH-1H., Results: There was a profound, immediate, and sustained reduction of the peripheral lymphocyte count; the most susceptible were the levels of CD4+ and CD8+ cells, which remained depressed during the study period. Sixty-three percent of patients developed antibodies to CAMPATH-1H. Side effects occurred frequently throughout the first 24 hours following infusion, and included fever, headache, nausea, vomiting, and hypotension. All of the immediate drug toxicities resolved within the initial 24-hour postdosing period. One patient developed a reactivation of Mycobacterium xenopi infection 10 weeks following infusion. Sixty-five percent of patients developed a clinical response; the mean duration of response was 2 weeks., Conclusion: CAMPATH-1H is a lymphocyte-depleting antibody that is biologically potent even after single-dose therapy. There was no correlation between biologic effect and clinical response. Sustained lymphocyte suppression was observed. Acute infusion toxicities were observed in most patients. The role of depleting monoclonal antibodies in the treatment of RA should be reevaluated.
- Published
- 1995
- Full Text
- View/download PDF
48. Lack of a renal-protective effect of misoprostol in rheumatoid arthritis patients receiving cyclosporin A. Results of a randomized, placebo-controlled trial.
- Author
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Weinblatt ME, Germain BF, Kremer JM, Wall BA, Weisman MH, Maier AL, and Coblyn JS
- Subjects
- Adult, Aged, Cyclosporine adverse effects, Female, Gastrointestinal Diseases chemically induced, Humans, Hypertension chemically induced, Kidney Diseases chemically induced, Male, Middle Aged, Misoprostol adverse effects, Placebos, Prospective Studies, Arthritis, Rheumatoid drug therapy, Cyclosporine therapeutic use, Kidney drug effects, Misoprostol therapeutic use
- Abstract
Objective: To assess whether the synthetic prostaglandin misoprostol is renal protective in rheumatoid arthritis (RA) patients who are beginning cyclosporin A (CSA) therapy., Methods: In this randomized, placebo-controlled, multicenter trial, 50 patients with active RA were randomized to receive either misoprostol (800 micrograms/day) or placebo for 16 weeks. After 2 weeks of pretreatment with misoprostol or placebo, all patients concomitantly received CSA at an initial and maximum dosage of 5 mg/kg/day for 12 weeks., Results: A significant increase in the serum creatinine level was observed in both treatment groups, with no difference noted between groups. There was a high withdrawal rate in both groups, primarily due to adverse events., Conclusion: A renal-protective effect was not demonstrated for misoprostol compared with placebo in RA patients who are beginning CSA therapy.
- Published
- 1994
- Full Text
- View/download PDF
49. Low dose leucovorin does not interfere with the efficacy of methotrexate in rheumatoid arthritis: an 8 week randomized placebo controlled trial.
- Author
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Weinblatt ME, Maier AL, and Coblyn JS
- Subjects
- Aged, Double-Blind Method, Drug Therapy, Combination, Female, Humans, Leucovorin adverse effects, Male, Methotrexate adverse effects, Methotrexate antagonists & inhibitors, Middle Aged, Arthritis, Rheumatoid drug therapy, Leucovorin administration & dosage, Methotrexate administration & dosage
- Abstract
Objective: To determine if simultaneously administered low dose leucovorin interferes with the efficacy of methotrexate (MTX)., Methods: An 8-week double blind placebo controlled study of leucovorin (1 mg) in 16 patients with rheumatoid arthritis receiving chronic MTX was performed at a single academic center., Results: A flare of disease activity was not observed. Clinical variables of arthritis activity did not change in the leucovorin treated population., Conclusions: Low dose leucovorin when taken simultaneously with MTX did not interfere with the efficacy of MTX in a short term 8 week trial.
- Published
- 1993
50. Zileuton, a 5-lipoxygenase inhibitor in rheumatoid arthritis.
- Author
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Weinblatt ME, Kremer JM, Coblyn JS, Helfgott S, Maier AL, Petrillo G, Henson B, Rubin P, and Sperling R
- Subjects
- Adult, Aged, Anti-Inflammatory Agents, Non-Steroidal adverse effects, Arthritis, Rheumatoid enzymology, Arthritis, Rheumatoid metabolism, Double-Blind Method, Female, Humans, Hydroxyurea adverse effects, Hydroxyurea therapeutic use, Leukotriene B4 metabolism, Male, Middle Aged, Time Factors, Anti-Inflammatory Agents, Non-Steroidal therapeutic use, Arthritis, Rheumatoid drug therapy, Hydroxyurea analogs & derivatives, Lipoxygenase Inhibitors adverse effects, Lipoxygenase Inhibitors therapeutic use
- Abstract
The effects of zileuton, a new 5-lipoxygenase inhibitor, on leukotriene generation and clinical response in rheumatoid arthritis (RA) was studied in a 4-week randomized double blind placebo controlled study at 2 academic rheumatology centers. Zileuton decreased the mean (+/- SEM) ionophore induced synthesis of leukotriene B4 at Week 1 by 70% from 191.2 +/- 28.5 to 57.5 +/- 17.0 ng/ml. A parallel suppression of all major 5-lipoxygenase pathway products was observed. An improvement in clinical variables was observed in the zileuton and placebo treated population. No unique toxicity was identified in this study. Zileuton inhibited 5-lipoxygenase in RA with a suggestion of clinical response with limited toxicity.
- Published
- 1992
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