Kitas GD, Gabriel SE. Cardiovascular disease in rheumatoid arthritis: state of the art and future perspectives. Ann Rheum Dis. 2011;70:8–14.
Article
PubMed
Google Scholar
Smolen JS, Aletaha D, Bijlsma JW, Breedveld FC, Boumpas D, Burmester G, et al. Treating rheumatoid arthritis to target: recommendations of an international task force. Ann Rheum Dis. 2010;69:631–7.
Article
PubMed
PubMed Central
Google Scholar
Pincus T, Castrejon I, Bergman MJ, Yazici Y. Treat-to-target: not as simple as it appears. Clin Exp Rheumatol. 2012;30:S10–20.
PubMed
Google Scholar
van der Heijde DM, Hof MA V ’t, van Riel PL, Theunisse LA, Lubberts EW, van Leeuwen MA, et al. Judging disease activity in clinical practice in rheumatoid arthritis: first step in the development of a disease activity score. Ann Rheum Dis. 1990;49:916–20.
Article
PubMed
PubMed Central
Google Scholar
Prevoo ML, Hof MA V 't, Kuper HH, van Leeuwen MA, van de Putte LB, van Riel PL. Modified disease activity scores that include twenty-eight-joint counts. Development and validation in a prospective longitudinal study of patients with rheumatoid arthritis. Arthritis Rheum. 1995;38:44–8.
Article
CAS
PubMed
Google Scholar
Smolen JS, Breedveld FC, Schiff MH, Kalden JR, Emery P, Eberl G, et al. A simplified disease activity index for rheumatoid arthritis for use in clinical practice. Rheumatology (Oxford). 2003;42:244–57.
Article
CAS
Google Scholar
Aletaha D, Nell VP, Stamm T, Uffmann M, Pflugbeil S, Machold K, et al. Acute phase reactants add little to composite disease activity indices for rheumatoid arthritis: validation of a clinical activity score. Arthritis Res Ther. 2005;7:R796–806.
Article
CAS
PubMed
PubMed Central
Google Scholar
Foell D, Roth J. Proinflammatory S100 proteins in arthritis and autoimmune disease. Arthritis Rheum. 2004;50:3762–71.
Article
CAS
PubMed
Google Scholar
Odink K, Cerletti N, Bruggen J, Clerc RG, Tarcsay L, Zwadlo G, et al. Two calcium-binding proteins in infiltrate macrophages of rheumatoid arthritis. Nature. 1987;330:80–2.
Article
CAS
PubMed
Google Scholar
Wilkinson MM, Busuttil A, Hayward C, Brock DJ, Dorin JR, Van Heyningen V. Expression pattern of two related cystic fibrosis-associated calcium-binding proteins in normal and abnormal tissues. J Cell Sci. 1988;91:221–30.
CAS
PubMed
Google Scholar
Dale I, Fagerhol MK, Naesgaard I. Purification and partial characterization of a highly immunogenic human leukocyte protein, the L1 antigen. Eur J Biochem. 1983;134:1–6.
Article
CAS
PubMed
Google Scholar
Hetey L, Doring E, Penke B. Influence of cholecystokinin on the synaptosomal dopamine uptake in the nucleus accumbens of rats. Neurochem Int. 1987;10:525–8.
Article
CAS
PubMed
Google Scholar
Johne B, Fagerhol MK, Lyberg T, Prydz H, Brandtzaeg P, Naess-Andresen CF, et al. Functional and clinical aspects of the myelomonocyte protein calprotectin. Mol Pathol. 1997;50:113–23.
Article
CAS
PubMed
PubMed Central
Google Scholar
Berntzen HB, Fagerhol MK, Ostensen M, Mowinckel P, Hoyeraal HM. The L1 protein as a new indicator of inflammatory activity in patients with juvenile rheumatoid arthritis. J Rheumatol. 1991;18:133–8.
CAS
PubMed
Google Scholar
Berntzen HB, Munthe E, Fagerhol MK. A longitudinal study of the leukocyte protein L1 as an indicator of disease activity in patients with rheumatoid arthritis. J Rheumatol. 1989;16:1416–20.
CAS
PubMed
Google Scholar
Brun JG, Haga HJ, Boe E, Kallay I, Lekven C, Berntzen HB, et al. Calprotectin in patients with rheumatoid arthritis: relation to clinical and laboratory variables of disease activity. J Rheumatol. 1992;19:859–62.
CAS
PubMed
Google Scholar
Hammer HB, Kvien TK, Glennas A, Melby K. A longitudinal study of calprotectin as an inflammatory marker in patients with reactive arthritis. Clin Exp Rheumatol. 1995;13:59–64.
CAS
PubMed
Google Scholar
Frosch M, Vogl T, Seeliger S, Wulffraat N, Kuis W, Viemann D, et al. Expression of myeloid-related proteins 8 and 14 in systemic-onset juvenile rheumatoid arthritis. Arthritis Rheum. 2003;48:2622–6.
Article
CAS
PubMed
Google Scholar
Haga HJ, Brun JG, Berntzen HB, Cervera R, Khamashta M, Hughes GR. Calprotectin in patients with systemic lupus erythematosus: relation to clinical and laboratory parameters of disease activity. Lupus. 1993;2:47–50.
CAS
PubMed
Google Scholar
Youssef P, Roth J, Frosch M, Costello P, Fitzgerald O, Sorg C, et al. Expression of myeloid related proteins (MRP) 8 and 14 and the MRP8/14 heterodimer in rheumatoid arthritis synovial membrane. J Rheumatol. 1999;26:2523–8.
CAS
PubMed
Google Scholar
Andres Cerezo L, Mann H, Pecha O, Plestilova L, Pavelka K, Vencovsky J, et al. Decreases in serum levels of S100A8/9 (calprotectin) correlate with improvements in total swollen joint count in patients with recent-onset rheumatoid arthritis. Arthritis Res Ther. 2011;13:R122.
Article
PubMed
PubMed Central
Google Scholar
Hammer HB, Odegard S, Syversen SW, Landewe R, van der Heijde D, Uhlig T, et al. Calprotectin (a major S100 leucocyte protein) predicts 10-year radiographic progression in patients with rheumatoid arthritis. Ann Rheum Dis. 2010;69:150–4.
Article
CAS
PubMed
Google Scholar
Wakefield RJ, Goh E, Conaghan PG, Karim Z, Emery P. Musculoskeletal ultrasonography in Europe: results of a rheumatologist-based survey at a EULAR meeting. Rheumatology (Oxford). 2003;42:1251–3.
Article
CAS
Google Scholar
Backhaus M, Kamradt T, Sandrock D, Loreck D, Fritz J, Wolf KJ, et al. Arthritis of the finger joints: a comprehensive approach comparing conventional radiography, scintigraphy, ultrasound, and contrast-enhanced magnetic resonance imaging. Arthritis Rheum. 1999;42:1232–45.
Article
CAS
PubMed
Google Scholar
Naredo E, Bonilla G, Gamero F, Uson J, Carmona L, Laffon A. Assessment of inflammatory activity in rheumatoid arthritis: a comparative study of clinical evaluation with grey scale and power Doppler ultrasonography. Ann Rheum Dis. 2005;64:375–81.
Article
CAS
PubMed
PubMed Central
Google Scholar
Szkudlarek M, Court-Payen M, Jacobsen S, Klarlund M, Thomsen HS, Ostergaard M. Interobserver agreement in ultrasonography of the finger and toe joints in rheumatoid arthritis. Arthritis Rheum. 2003;48:955–62.
Article
PubMed
Google Scholar
Scire CA, Montecucco C, Codullo V, Epis O, Todoerti M, Caporali R. Ultrasonographic evaluation of joint involvement in early rheumatoid arthritis in clinical remission: power Doppler signal predicts short-term relapse. Rheumatology (Oxford). 2009;48:1092–7.
Article
CAS
Google Scholar
Brown AK, Quinn MA, Karim Z, Conaghan PG, Peterfy CG, Hensor E, et al. Presence of significant synovitis in rheumatoid arthritis patients with disease-modifying antirheumatic drug-induced clinical remission: evidence from an imaging study may explain structural progression. Arthritis Rheum. 2006;54:3761–73.
Article
CAS
PubMed
Google Scholar
Saleem B, Brown AK, Keen H, Nizam S, Freeston J, Wakefield R, et al. Should imaging be a component of rheumatoid arthritis remission criteria? A comparison between traditional and modified composite remission scores and imaging assessments. Ann Rheum Dis. 2011;70:792–8.
Article
PubMed
Google Scholar
Wakefield RJ, Freeston JE, Hensor EM, Bryer D, Quinn MA, Emery P. Delay in imaging versus clinical response: a rationale for prolonged treatment with anti-tumor necrosis factor medication in early rheumatoid arthritis. Arthritis Rheum. 2007;57:1564–7.
Article
PubMed
Google Scholar
Ozgocmen S, Ozdemir H, Kiris A, Bozgeyik Z, Ardicoglu O. Clinical evaluation and power Doppler sonography in rheumatoid arthritis: evidence for ongoing synovial inflammation in clinical remission. South Med J. 2008;101:240–5.
Article
PubMed
Google Scholar
Saleem B, Brown AK, Quinn M, Karim Z, Hensor EM, Conaghan P, et al. Can flare be predicted in DMARD treated RA patients in remission, and is it important? A cohort study. Ann Rheum Dis. 2012;71:1316–21.
Article
PubMed
Google Scholar
Hammer HB, Fagerhol MK, Wien TN, Kvien TK. The soluble biomarker calprotectin (an S100 protein) is associated to ultrasonographic synovitis scores and is sensitive to change in patients with rheumatoid arthritis treated with adalimumab. Arthritis Res Ther. 2011;13:R178.
Article
CAS
PubMed
PubMed Central
Google Scholar
Arnett FC, Edworthy SM, Bloch DA, McShane DJ, Fries JF, Cooper NS, et al. The American Rheumatism Association 1987 revised criteria for the classification of rheumatoid arthritis. Arthritis Rheum. 1988;31:315–24.
Article
CAS
PubMed
Google Scholar
Aletaha D, Neogi T, Silman AJ, Funovits J, Felson DT, Bingham CO 3rd, et al. Rheumatoid arthritis classification criteria: an American College of Rheumatology/European League Against Rheumatism collaborative initiative. Arthritis Rheum. 2010;62:2569–81.
Article
PubMed
Google Scholar
Backhaus M, Ohrndorf S, Kellner H, Strunk J, Backhaus TM, Hartung W, et al. Evaluation of a novel 7-joint ultrasound score in daily rheumatologic practice: a pilot project. Arthritis Rheum. 2009;61:1194–201.
Article
CAS
PubMed
Google Scholar
Backhaus MWS, Ohrndorf S, Alraqi S, Crowther S, Dhillon S, Dhindsa N, et al. Can satisfactory reliability of the 7-joint ultrasound score be attained by inexperienced Readers In a single calibration exercise? results from the biodam program. [abstract]. Arthritis Rheum. 2013;65:1946.
Google Scholar
Scheel AK, Hermann KG, Kahler E, Pasewaldt D, Fritz J, Hamm B, et al. A novel ultrasonographic synovitis scoring system suitable for analyzing finger joint inflammation in rheumatoid arthritis. Arthritis Rheum. 2005;52:733–43.
Article
PubMed
Google Scholar
Landis JR, Koch GG. The measurement of observer agreement for categorical data. Biometrics. 1977;33:159–74.
Article
CAS
PubMed
Google Scholar
Garcia-Arias M, Pascual-Salcedo D, Ramiro S, Ueberschlag ME, Jermann TM, Cara C, et al. Calprotectin in rheumatoid arthritis: association with disease activity in a cross-sectional and a longitudinal cohort. Mol Diagn Ther. 2013;17:49–56.
Article
CAS
PubMed
Google Scholar
Hammer HB, Odegard S, Fagerhol MK, Landewe R, van der Heijde D, Uhlig T, et al. Calprotectin (a major leucocyte protein) is strongly and independently correlated with joint inflammation and damage in rheumatoid arthritis. Ann Rheum Dis. 2007;66:1093–7.
Article
CAS
PubMed
PubMed Central
Google Scholar
Foell D, Frosch M, Schulze zur Wiesch A, Vogl T, Sorg C, Roth J. Methotrexate treatment in juvenile idiopathic arthritis: when is the right time to stop? Ann Rheum Dis. 2004;63:206–8.
Article
CAS
PubMed
PubMed Central
Google Scholar
Foell D, Wulffraat N, Wedderburn LR, Wittkowski H, Frosch M, Gerss J, et al. Methotrexate withdrawal at 6 vs 12 months in juvenile idiopathic arthritis in remission: a randomized clinical trial. JAMA. 2010;303:1266–73.
Article
CAS
PubMed
Google Scholar
Senolt L. Calprotectin (a S100 protein) as a sensitive biomarker for rheumatoid arthritis: new perspectives for an old finding. Int J Clin Rheumatol. 2012;7:127–9.
Article
CAS
Google Scholar
Colebatch AN, Edwards CJ, Ostergaard M, van der Heijde D, Balint PV, D’Agostino MA, et al. EULAR recommendations for the use of imaging of the joints in the clinical management of rheumatoid arthritis. Ann Rheum Dis. 2013;72:804–14.
Article
PubMed
Google Scholar
Naredo E, Rodriguez M, Campos C, Rodriguez-Heredia JM, Medina JA, Giner E, et al. Validity, reproducibility, and responsiveness of a twelve-joint simplified power doppler ultrasonographic assessment of joint inflammation in rheumatoid arthritis. Arthritis Rheum. 2008;59:515–22.
Article
PubMed
Google Scholar
Perricone C, Ceccarelli F, Modesti M, Vavala C, Di Franco M, Valesini G, et al. The 6-joint ultrasonographic assessment: a valid, sensitive-to-change and feasible method for evaluating joint inflammation in RA. Rheumatology (Oxford). 2012;51:866–73.
Article
Google Scholar
Hammer HB, Kvien TK. Comparisons of 7- to 78-joint ultrasonography scores: all different joint combinations show equal response to adalimumab treatment in patients with rheumatoid arthritis. Arthritis Res Ther. 2011;13:R78.
Article
PubMed
PubMed Central
Google Scholar
Hameed B, Pilcher J, Heron C, Kiely PD. The relation between composite ultrasound measures and the DAS28 score, its components and acute phase markers in adult RA. Rheumatology (Oxford). 2008;47:476–80.
Article
CAS
Google Scholar
Senolt L, Cerezo LA, Sumova B, Pecha O, Plestilova L, Forejtova S, et al. High levels of metastasis-inducing S100A4 protein and treatment outcome in early rheumatoid arthritis: data from the PERAC cohort. Biomarkers. 2015;20:47–51.
Article
CAS
PubMed
Google Scholar