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- Title
Analysis of Ana/Dfs70 Pattern in a Large Cohort of Autoimmune/Autoinflammatory Diseases Compared with First Degree Relatives and Healthy Controls Evaluated from Colombia.
- Authors
Romero-Sánchez, Consuelo; Calixto, Omar-Javier; Romero-Alvarez, Veronica; Vargas-Martin, Alejandra; Castro, Luis; Amador, Julio; Marín-Acevedo, Daniela; Acevedo-Godoy, Mónica; Rincón-Riaño, Diana; Bello-Gualtero, Juan Manuel
- Abstract
Background: The presence of Antinuclear antibodies/Dense Fine Speckled 70 (ANA/DFS70) has been proposed as a negative biomarker in the process of exclusion of systemic autoimmune/autoinflammatory rheumatic diseases (SARD). The purpose was to evaluate and characterize ANA/DFS70 patients in a large Colombian population with SARD; rheumatoid arthritis (RA), Psoriasis (PsO), Undifferentiated connective tissue disease (UCTD), first-degree relatives of (FDR), and healthy controls (HC). Methods: ANA determination was performed using indirect immunofluorescence. Samples with positive dense fine granular staining in the nucleoplasm of the interphase cell (AC2) fluorescence were confirmed with CytoBead/ANA and ANA/modified (Knocked out for the PSPI1 gen). Results: 530 mestizo Colombian participants were included. ANA/DFS70 antibody positivity in the whole group was 2.3%, and 0.8% in SARD; no RA patients were positive. ANA/DFS70 positives in UCTD were three women; the average time of evolution of the disease was 9.4 years. The most frequent clinical findings were arthralgias, non-erosive arthritis, and Raynaud's phenomenon. The PsO positive was a woman with C-reactive protein (CRP) positivity and a negative erythrocyte sedimentation rate (ESR) without any other positive autoantibody or extracutaneous manifestation. FDR and HC positives were 7/8 women. All were negative for other autoantibodies. Conclusions: ANA/DFS70 autoantibodies were present in Colombian patients with SARD at a shallow frequency, they were more prevalent in healthy individuals.
- Subjects
COLOMBIA; AUTOINFLAMMATORY diseases; ANTINUCLEAR factors; RAYNAUD'S disease; C-reactive protein; RHEUMATISM; JOINT pain
- Publication
Diagnostics (2075-4418), 2022, Vol 12, Issue 9, pN.PAG
- ISSN
2075-4418
- Publication type
Article
- DOI
10.3390/diagnostics12092181