Gastrointestinal Symptoms and Elevated Levels of Anti- Antibodies Are Associated with Higher Disease Activity in Colombian Patients with Spondyloarthritis
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Background: Spondyloarthritis (SpA) is a group of articular inflammatory rheumatic diseases that their gastrointestinal manifestations are around 10% of their extra-articular symptoms, supporting that the inflammatory response of the intestinal mucosa could be associated with the clinical status.
Objectives: To investigate the association between gastrointestinal symptoms and autoantibodies and disease activity between SpA patients, healthy subjects (HS), and patients with inflammatory bowel disease (IBD).
Methods: 102 SpA patients, 29 IBD patients, and 117 HS were included. Autoantibodies as ASCA, ANCA, anti-tTG, anti-DGP, ANA, and IgA were measured. The patients were assessed to evaluate clinical and gastrointestinal symptoms. An association analysis was performed using Chi square test and a logistic regression.
Results: Significant differences were found for ASCA levels in SpA (28.2%) compared to IBD (14.2%) and HS (6.0%) ( = 0.029), as well as for ANAS in SpA (49.5%) and IBD (37.9%) ( < 0.001) and abdominal pain ( = 0.012) between SpA (54.3%) and IBD (27.5%). Significant associations were found between BASDAI > 4 and gastrointestinal symptoms ( < 0.05) and IgA ( = 0.007). The association for abdominal bloating was maintained (OR: 3.93, CI-95%, 1.14-13.56; = 0.030).
Conclusions: Gastrointestinal symptoms, ASCA, ANAS, and IgA levels were associated with high disease activity in SpA compared with IBD and HS.
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