Trial reportFrontiers in immunology2020
Complement Expression and Activation in Osteoarthritis Joint Compartments.
Trial report in Frontiers in immunology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.
What it found
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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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
33 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.
- An Evidence-Based Systematic Review of Human Knee Post-Traumatic Osteoarthritis (PTOA): Timeline of Clinical Presentation and Disease Markers, Comparison of Knee Joint PTOA Models and Early Disease Implications.International journal of molecular sciences · 2021Pooled it
- Integrative Proteome-Wide Mendelian Randomization and Multi-Omics Analysis Identify ADM and CFH as Candidate Genes for Osteoarthritis.Biomedicines · 2026Article
- Selenium, Selenoprotein P, and Gut Dysbiosis are Associated with Cartilage Damage in Osteoarthritis Patients.Biological trace element research · 2026Article
- Shifting From Systemic to Precision-Targeted Complement Therapies: Opportunities and Hurdles.European journal of immunology · 2026Review
- Vasoactive intestinal peptide advances chondrogenesis and modulates pathogenic mediators in human osteoarthritis.Journal of molecular medicine (Berlin, Germany) · 2026Article
- Complement factor D (adipsin) mediates pressure-pain hypersensitivity post destabilization of medial meniscus injury.Arthritis research & therapy · 2025Article
- Molecular Dynamics Modeling of Potential Osteoarthritic Biomarkers.Life (Basel, Switzerland) · 2025Article
- COMP Is a Biomarker of Cartilage Destruction, Extracellular Matrix and Vascular Remodeling and Tissue Repair.International journal of molecular sciences · 2025Review
- Identification the correlation between hip and knee osteoarthritis and their causal relationship with immune traits.BMC musculoskeletal disorders · 2025Article
- Loosening the Lid on Shoulder Osteoarthritis: How the Transcriptome and Metabolic Syndrome Correlate with End-Stage Disease.International journal of molecular sciences · 2025Article
- Individual Genomic Loci, Transcript Level and Serum Profile of Immune, Antioxidant and Hormonal Markers Associated with Sheep Arthritis.Veterinary sciences · 2025Article
- Discovery and experimentally mice model validation of CFI, a natural killer T cell-related gene, as a key biomarker in osteoarthritis.Clinical and experimental immunology · 2025Article
- Identification of key genes CCL5, PLG, LOX and C3 in clear cell renal cell carcinoma through integrated bioinformatics analysis.Frontiers in molecular biosciences · 2025Article
- Peripheral blood immune inflammatory markers in neuromyelitis optica spectrum disorders.Frontiers in neurology · 2025Review
- 'QuickDASH' to find unique genes and biological processes associated with shoulder osteoarthritis: a prospective case-control study.BMC research notes · 2024Article
- Optimization of glycopeptide enrichment techniques for the identification of clinical biomarkers.Expert review of proteomics · 2024Review
- In Vitro Investigation of Pulsed Electromagnetic Field Stimulation (PEMF) with MAGCELLJournal of personalized medicine · 2024Article
- Inhibition of complement C3 prevents osteoarthritis progression in guinea pigs by blocking STAT1 activation.Communications biology · 2024Article
- Review
- The Role of Innate Immunity in Osteoarthritis and the Connotation of "Immune-joint" Axis: A Narrative Review.Combinatorial chemistry & high throughput screening · 2024Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Objective: To investigate complement(C) factors(F) and their activation fragments expression in OA joint tissues. Design: Immunohistochemistry and quantitative imaging were performed to analyze C3, C4, and CF (factor) B expression on osteochondral biopsies (43 patients) collected during arthroplasty. Isolated chondrocytes and synoviocytes, cartilage and synovial tissues obtained from surgical specimens of OA patients (15 patients) were cultured with or without IL-1β. Real time PCR for CFB, C3, and C4 was performed. Culture supernatants were analyzed for C3a, C5a, CFBa, and terminal complement complex (TCC) production. Results: In osteochondral biopsies, C factor expression was located in bone marrow, in a few subchondral bone cells and chondrocytes. C3 was the most expressed while factor C4 was the least expressed factor. Gene expression showed that all C factors analyzed were expressed both in chondrocytes and synoviocytes. In chondrocyte cultures and cartilage explants, CFB expression was significantly higher than C3 and C4. Furthermore, CFB, but not C3 and C4 expression was significantly induced by IL-1β. As to C activation factors, C3a was the most produced and CFBa was induced by IL-1β in synovial tissue. TCC production was undetectable in isolated chondrocytes and synoviocytes cell culture supernatants, whereas it was significantly augmented in cartilage explants. Conclusion: C factors were locally produced and activated in OA joint with the contribution of all tissues (cartilage, bone, and synovium). Our results support the involvement of innate immunity in OA and suggest an association between some C alternative pathway component and joint inflammation.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.