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Background: CD146 (MCAM-melanoma cell adhesion molecule) is a cell surface adhesion molecule for Laminin 411. T cells expressing MCAM are mainly responsible for IL-17 production. IL-17 secreting T helper cells (Th17 cells) are critical for the pathogenesis of psoriatic arthritis (PsA). Here we hypothesized enrichment of CD146IL-17 memory T cells in PsA synovium and studied the association of CD146 expression and CD4IL-17 activated memory (CD11aCD45RO) T cells in synovial fluid and blood of PSA, rheumatoid arthritis (RA, a positive control) and osteoarthritis (OA) patients.
Methods: Hi-D FACS studies were done to identify IL-17 in CD4CD146CD45RO and CD8CD146CD45RO T cells.
Results: We observed that effector CD146(MCAM) T cells are enriched at the synovial inflammation site in PsA.
Conclusion: As CD146 T cells are a key resource for IL-17 it is likely that the enrichment of these MCAM pathologic cells are critical for the disease process of PsA.
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http://dx.doi.org/10.1007/s11033-021-06678-2 | DOI Listing |
JAMA Netw Open
September 2025
Department of Psychiatry, Psychosomatics, and Psychotherapy, University of Lübeck, Lübeck, Germany.
Importance: Patients with inflammatory rheumatic diseases (IRDs) frequently experience psychological distress; however, access to psychological support remains limited.
Objective: To investigate the effectiveness of a digital psychological intervention for individuals with IRDs.
Design, Setting, And Participants: Participants aged 18 years or older were recruited across Germany between February 22 and June 4, 2024, if they had been diagnosed with rheumatoid arthritis, psoriatic arthritis, or systemic lupus erythematosus and reported psychological distress and reduced quality of life.
Rheumatol Int
September 2025
Division of Rheumatology and Immunology, Department of PMR, , Sakarya University School of Medicine, Sakarya, Turkey.
To identify clinical and demographic predictors associated with the timing of transition from psoriasis (PsO) to psoriatic arthritis (PsA), and to compare the characteristics of patients with concurrent PsO-PsA onset versus those with prolonged transition. A multi-center, observational study was conducted using data from the Turkish League Against Rheumatism (TLAR) network including PsA patients fulfilling CASPAR criteria. Patients were categorized into two groups: Group 1 (concurrent PsO and PsA onset within ± 1 year) and Group 2 (prolonged transition to PsA, > 1 year after PsO).
View Article and Find Full Text PDFMedicine (Baltimore)
September 2025
Department of Health Statistics, School of Public Health, Shandong Second Medical University, Weifang, Shandong, China.
Both psoriasis and autoimmune thyroid diseases are characterized by chronic inflammation. The previous studies indicated a potential association between psoriasis and autoimmune thyroid diseases. However, the direction and nature of these relationships remain unclear.
View Article and Find Full Text PDFMedicine (Baltimore)
September 2025
Jingjiang People's Hospital Affiliated to Yangzhou University, Taizhou, Jiangsu, China.
Previous epidemiological research has shown that immune cells have a significant impact on the progression and development of psoriatic arthritis (PsA). However, the causal relationship between immune cell characteristics and PsA remains uncertain. A bidirectional 2-sample Mendelian randomization analysis was conducted, using data from publicly available genome-wide association studies.
View Article and Find Full Text PDFReumatol Clin (Engl Ed)
September 2025
Rheumatology Unit, Hospital Universitari Vall Hebron, Spain.
Background: Psoriatic arthritis (PsA) affects joints and entheses. The objective is to use ultrasound (US) to see inflammatory changes in joints and entheses in patients with active PsA starting Apremilast.
Primary Objective: 20% reduction in the US index (UIC) at 12 months.