scholarly journals Production of IgM rheumatoid factor by normal lymphocytes after stimulation with preparations containing IgM rheumatoid factor from patients with juvenile arthritis.

1991 ◽  
Vol 50 (3) ◽  
pp. 142-146 ◽  
Author(s):  
G Nesher ◽  
T L Moore ◽  
T G Osborn ◽  
R W Dorner
Keyword(s):  
Rheumatoid Factor ◽  
Juvenile Arthritis ◽  
Igm Rheumatoid Factor

scholarly journals Separation and characterization of immune complexes containing 19S IgM rheumatoid factor-IgG in juvenile arthritis

1983 ◽  
Vol 26 (2) ◽  
pp. 165-169 ◽  
Author(s):  
Terry L. Moore ◽  
P. Wayne Sheridan ◽  
Jack Zuckner ◽  
Robert W. Dorner
Keyword(s):  
Rheumatoid Factor ◽  
Immune Complexes ◽  
Juvenile Arthritis ◽  
Igm Rheumatoid Factor

scholarly journals Estimation of the relative avidity of 19S IgM rheumatoid factor secreted by rheumatoid synovial cells for human IgG subclasses

1986 ◽  
Vol 29 (6) ◽  
pp. 722-729 ◽  
Author(s):  
Dick L. Robbins ◽  
Jeffrey Skilling ◽  
William F. Benisek ◽  
Richard Wistar
Keyword(s):  
Rheumatoid Factor ◽  
Igg Subclasses ◽  
Synovial Cells ◽  
Human Igg ◽  
Igm Rheumatoid Factor

scholarly journals Juvenile Idiopathic Arthritis in Adults: Long-Term Observation of Ukrainian Patients

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
Marta Dzhus
Keyword(s):  
Juvenile Idiopathic Arthritis ◽  
Rheumatoid Factor ◽  
Rheumatic Diseases ◽  
Damage Index ◽  
Health Assessment ◽  
Juvenile Arthritis ◽  
Adult Age ◽  
Enthesitis Related Arthritis ◽  
Long Term Observation

The assessment of long-term outcome of functional disability and disease activeness in adult patients with juvenile idiopathic arthritis appears to be complicated due to the absence of a unified approach to the classification and estimation of disease activeness, as well as the loss of supervision over a patient because of remission or his/her transition from pediatric to adult rheumatic service. The objective of the research was to determine how adults with the history of juvenile idiopathic arthritis fulfill the classification criteria for adult rheumatic diseases, as well as to assess activeness of these diseases, the degree of functional disorders, and social activeness of patients in Ukraine. Materials and methods. Patients with juvenile idiopathic arthritis older than 18 years and with more than 3 years of disease duration living in different parts of Ukraine were included into the study. Data regarding sociodemographic features, fulfillment of adult classification criteria, Health Assessment Questionnaire, articular and extra-articular Juvenile Arthritis Damage Index and disease activity were analyzed.Results. We observed 122 adult patients with the history of juvenile idiopathic arthritis irrespective of the presence of active inflammation at the moment of the examination. This group included patients from different regions of Ukraine diagnosed with juvenile idiopathic arthritis during 1984-2013. An adult rheumatologist examined all patients and the diagnosis was revised according to the adult classification of rheumatic diseases. Typical diagnostic criteria for rheumatoid arthritis were estimated in 32.8% of patients, ankylosing spondylitis – in 31.1% of patients, undifferentiated arthritis – in 13.9% of patients, Still’s disease – in 4.9% of patients, psoriatic arthritis – in 0.8% of patients, steady clinical laboratory remission – in 16.5% of patients. Most patients (81.8%) with rheumatoid factor positive polyarticular juvenile idiopathic arthritis fell under rheumatoid arthritis criteria in adulthood, and in 85% of patients with enthesitis-related arthritis as well as 53.8% of patients with extended oligoarthritis ankylosing spondylitis developed in adulthood. 68.8% of patients with systemic juvenile idiopathic arthritis, 68% of patients with rheumatoid factor negative polyarthritic subtype and 55% of patients with enthesitis-related arthritis had disability and incapacitation. Minimal disorders of the patients’ general condition according to the Health Assessment Questionnaire in adult age were found in most subtypes of juvenile idiopathic arthritis classified according to the International League of Associations for Rheumatology (extended and persistent oligoarthritis, rheumatoid factor positive polyarthritis, systemic subtype); moderate disorders of the general condition were found in enthesitis-related arthritis and rheumatoid factor negative polyarthritis. Side effects of juvenile idiopathic arthritis according to the articular Juvenile Arthritis Damage Index included severe articular damage being most frequently found in systemic and rheumatoid factor positive polyarthritis subtypes of juvenile idiopathic arthritis, while side effects of juvenile idiopathic arthritis according to the extra-articular Juvenile Arthritis Damage Index included extra-articular damage being found in systemic and rheumatoid factor negative polyarthritis subtypes of juvenile idiopathic arthritis, that was confirmed by the assessment of physical health according to the Short Form Health Survey-36, which was the worst in patients with systemic (40.3±12.6) and rheumatoid factor negative polyarthritis (38.9±9.4) subtypes of juvenile idiopathic arthritis.Conclusions. Further research of remote consequences of juvenile idiopathic arthritis in adult age and long-term observation of such patients require a detailed study to improve diagnostics and provide adequate treatment of rheumatic diseases with juvenile onset in adult age.

scholarly journals A spontaneous rheumatoid arthritis-like disease in MRL/l mice.

1982 ◽  
Vol 155 (6) ◽  
pp. 1690-1701 ◽  
Author(s):  
L Hang ◽  
A N Theofilopoulos ◽  
F J Dixon
Keyword(s):  
Rheumatoid Arthritis ◽  
Rheumatoid Factor ◽  
Joint Inflammation ◽  
Close Correlation ◽  
Human Rheumatoid Arthritis ◽  
Igm Rheumatoid Factor ◽  
Joint Pathology ◽  
Old Females

MRL/l mice spontaneously develop an arthritis very similar in many respects to human rheumatoid arthritis. A detailed morphologic and serologic analysis of this disease revealed the following: (a) a 75% incidence of synovial and periarticular inflammation, very similar to human rheumatoid arthritis, in 5-6 mo-old females, (b) close associations between presence of joint inflammation and subsynovial and/or periarticular vasculitis, and (c) a close correlation between presence of circulating IgM rheumatoid factor (RF) and demonstrable synovial and/or joint pathology, i.e., 95% of mice with significant levels of IgMRF had synovitis and/or arthritis.

scholarly journals COMPLEMENT FIXATION BY A TWO-COMPONENT ANTIBODY SYSTEM: IMMUNOGLOBULIN G AND IMMUNOGLOBULIN M ANTI-GLOBULIN (RHEUMATOID FACTOR)

1970 ◽  
Vol 132 (4) ◽  
pp. 673-693 ◽  
Author(s):  
Frank R. Schmid ◽  
Ivan M. Roitt ◽  
Maria J. Rocha
Keyword(s):  
Rheumatoid Factor ◽  
Complement Fixation ◽  
Direct Interaction ◽  
Fluid Phase ◽  
Kinetic Studies ◽  
Immunoglobulin M ◽  
Inhibitory Potency ◽  
Cell Agglutination ◽  
Igm Rheumatoid Factor ◽  
Rabbit Igg

Complement-mediated lysis of sheep erythrocytes coated with optimal concentrations of rabbit IgG hemolysin was inhibited by euglobulin fractions from the sera of patients with seropositive rheumatoid arthritis. That this was due to direct interaction with the IgG coat on the red cell rather than a nonspecific reaction with complement in the fluid phase was confirmed by controls using cells coated with IgM hemolysin. The inhibitory activity was recovered in purified IgM rheumatoid factor preparations and could be absorbed out with insoluble aggregated human IgG. The inhibitory potency of the rheumatoid factors correlated well with their sheep cell agglutination titers. Inhibition was not the result of physical aggregation of the erythrocytes by rheumatoid factor. Kinetic studies were consistent with the view that rheumatoid factor displaces C1q from its binding to IgG. Paradoxically, at suboptimal sensitizing concentrations of IgG hemolysin, rheumatoid factor enhances the fixation of complement. These results can be interpreted on the basis of the blockage of complement fixation by IgG and its replacement by a relatively weak direct fixation by the IgM rheumatoid factor. Thus, the interaction of RF with IgG generates only a limited ability to fix complement which, when contrasted with the fixation at suboptimal concentrations of IgG hemolysin alone, appears as net enhancement; when this is contrasted with fixation occurring with optimal concentrations of IgG, it appears as net inhibition.

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