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Scandinavian Journal of Rheumatology, 1995 In rheumatoid arthritis (RA) seropositivity has been associated with poor prognosis including bone erosions and extra-articular manifestations. However, findings have been conflicting on the association between individual rheumatoid factor (RF) isotypes and extra-articular manifestations.
T, Jónsson +6 more
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Clinical relevance of IgA rheumatoid factor (RF) in children with juvenile rheumatoid arthritis
Rheumatology International, 1999 This study proposed to investigate the prevalence and clinical relevance of serum immunoglobulin A (IgA) rheumatoid factor (RF) in juvenile rheumatoid arthritis (JRA) as published reports vary in their conclusion. Sera of 82 children with JRA and 25-age and sex-matched healthy children were measured for IgA RF by an enzyme linked immunoassay using ...
A, Bharadwaj, A, Aggarwal, R, Misra
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Rheumatoid factor (RF) distribution in periodontal disease
Journal of Clinical Immunology, 1991This study investigated the occurrence of an autoantibody, IgM rheumatoid factor, that may result from the chronic inflammation noted in periodontal disease and rheumatoid arthritis. In order to detect IgM-RF, a biotin-avidin ELISA was developed. This assay was found to be sensitive and accurate by testing a rheumatoid arthritis population.
J, Thé, J L, Ebersole
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Quality Control of Rheumatoid Factor (RF) Testing in Finland
Scandinavian Journal of Rheumatology, 1988RF has been on the national laboratory quality control program since 1981. A pilot study had showed that most participants would be small laboratories performing qualitative slide latex tests only. Since we nevertheless wanted to be able to extrapolate test sensitivity data for each laboratory, we have sent out sets of 5-6 coded samples that in fact ...
R, von Essen, M V, Lehtinen
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Scandinavian Journal of Immunology, 1995
The synovial fluid of patients with rheumatoid arthritis (RA) was found to contain IgG and /or IgG‐containing immune complexes (ICs) that stimulated an intense antibody formation when injected into mice of certain strains, notably of NZ background. The response was characterized by high and sustained levels of IgG1 antibodies with rheumatoid factor (RF)
M. ABEDI‐VALUGERDI +3 more
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The synovial fluid of patients with rheumatoid arthritis (RA) was found to contain IgG and /or IgG‐containing immune complexes (ICs) that stimulated an intense antibody formation when injected into mice of certain strains, notably of NZ background. The response was characterized by high and sustained levels of IgG1 antibodies with rheumatoid factor (RF)
M. ABEDI‐VALUGERDI +3 more
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Rheumatology International, 2006
The prevalence and clinical relevance of IgM and IgA RF detected by ELISA were studied in 91 patients with juvenile rheumatoid arthritis (JRA) and 45 healthy children. IgM and IgA RF were detected, respectively, in 33 and 44% of the patients, compared to 6.7 and 15.6% of the healthy children (p = 0.001 and 0.0006, respectively). The frequency of IgM RF
Rosa A, Ferreira +6 more
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The prevalence and clinical relevance of IgM and IgA RF detected by ELISA were studied in 91 patients with juvenile rheumatoid arthritis (JRA) and 45 healthy children. IgM and IgA RF were detected, respectively, in 33 and 44% of the patients, compared to 6.7 and 15.6% of the healthy children (p = 0.001 and 0.0006, respectively). The frequency of IgM RF
Rosa A, Ferreira +6 more
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INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH, 2021
INTRODUCTION: Rheumatoid arthritis (RA) is a chronic, systemic, inammatory autoimmune disease that initially affects small joints, progressing to larger joints, and eventually the skin, eyes, heart, kidneys, and lungs. This study was conducted to determine the usefulness of antiCCP antibodies and Rheumatoid Factor (RF) in diagnosis of Rheumatoid ...
Rahul Ranjan, Md Shoeb Alam, V N Jha
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INTRODUCTION: Rheumatoid arthritis (RA) is a chronic, systemic, inammatory autoimmune disease that initially affects small joints, progressing to larger joints, and eventually the skin, eyes, heart, kidneys, and lungs. This study was conducted to determine the usefulness of antiCCP antibodies and Rheumatoid Factor (RF) in diagnosis of Rheumatoid ...
Rahul Ranjan, Md Shoeb Alam, V N Jha
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1992
The rheumatoid factors have been investigated in three different phases. The first detection of rheumatid factors and the establishment of the relationship between rheumatoid factors and clinical symptoms of rheumatoid arthritis (RA) occurred 50 years ago [53]. The pioneering phase between 1940 and 1950 included the confirmation of Waaler’s findings by
J. B. Natvig +3 more
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The rheumatoid factors have been investigated in three different phases. The first detection of rheumatid factors and the establishment of the relationship between rheumatoid factors and clinical symptoms of rheumatoid arthritis (RA) occurred 50 years ago [53]. The pioneering phase between 1940 and 1950 included the confirmation of Waaler’s findings by
J. B. Natvig +3 more
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Clinical Rheumatology, 1995
The efficacy and tolerability of sulphasalazine (SASP) was examined in a double blind, placebo-controlled 24-week study of 32 patients with rheumatoid factor (RF)-negative RA. Twelve patients (75%) of the SASP group completed the study; 4 patients were withdrawn because of an adverse event. Ten patients (62.5%) in the placebo group completed the study;
M, Farr +5 more
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The efficacy and tolerability of sulphasalazine (SASP) was examined in a double blind, placebo-controlled 24-week study of 32 patients with rheumatoid factor (RF)-negative RA. Twelve patients (75%) of the SASP group completed the study; 4 patients were withdrawn because of an adverse event. Ten patients (62.5%) in the placebo group completed the study;
M, Farr +5 more
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2018
Rheumatoid arthritis is a chronic autoimmune disease associated with autoantibodies known as rheumatoid factor (RF). RF is produced by autoreactive B cells against self-IgG Fc regions. Therefore, RF is wieldy used in clinical laboratories as a biomarker for rheumatoid arthritis.
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Rheumatoid arthritis is a chronic autoimmune disease associated with autoantibodies known as rheumatoid factor (RF). RF is produced by autoreactive B cells against self-IgG Fc regions. Therefore, RF is wieldy used in clinical laboratories as a biomarker for rheumatoid arthritis.
openaire +1 more source