ArticleClinical and experimental immunology2001
Reduced systemic IgG levels against peptidoglycan in rheumatoid arthritis (RA) patients.
Article in Clinical and experimental immunology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 27 citations in OpenAlex.
- Synthetic High-Throughput Microarrays of Peptidoglycan Fragments as a Novel Sero-Diagnostic Tool for Patient Antibody Profiling.Angewandte Chemie (International ed. in English) · 2025Article
- Microbiota-induced active translocation of peptidoglycan across the intestinal barrier dictates its within-host dissemination.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Article
- Immunoglobulin G and A antibody responses to Bacteroides forsythus and Prevotella intermedia in sera and synovial fluids of arthritis patients.Clinical and diagnostic laboratory immunology · 2003Article
Corrections and comments
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Authors and funding
8 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The gut flora is believed to play a role in the pathogenesis of RA. Peptidoglycan, a major cell wall component of Gram-positive bacteria, is a candidate antigen because of its capability to trigger production of proinflammatory cytokines, to induce arthritis in rodents, and because of its presence in antigen-presenting cells in RA joints. We investigated whether the systemic and local antibody levels against a peptidoglycan-polysaccharide (PG-PS) are related to the presence and disease activity of RA. Significantly lower levels of systemic IgG directed against PG-PS were found in healthy females compared with healthy males, and systemic IgA levels specific for PG-PS were negatively correlated with age. Levels of systemic IgG directed against PG-PS were significantly reduced in RA patients compared with sex- and age-matched healthy controls. Local (synovial fluid) levels of IgG did not correlate with disease activity whereas synovial fluid levels of IgA correlated positively with disease activity. These data suggest that IgG in healthy people mediates protection against spreading of PG to non-mucosal sites.
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Registered trials
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