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[Prevalence and role of anticardiolipin antibodies in Crohn disease]
I Lonjon1, L Beaugerie, A Deschamps
1Service d'Hépato-Gastroentérologie, Hôpital Rothschild, Paris.
Insights
Anticardiolipin antibodies are more prevalent in Crohn's disease patients, but their presence doesn't correlate with disease activity or thrombosis history. This finding impacts understanding of Crohn's disease complications.
Area of Science:
- Immunology
- Gastroenterology
Background:
- Anticardiolipin antibodies (aCL) are associated with antiphospholipid syndrome, endothelial damage, and thrombosis.
- Crohn's disease (CD) is a chronic inflammatory condition with potential extraintestinal manifestations.
Purpose of the Study:
- To investigate the frequency of aCL in patients with CD.
- To determine if aCL presence correlates with clinical disease activity or treatment in CD.
Main Methods:
- Serum samples from 138 CD patients and 118 controls were tested for IgG aCL.
- CD patients' history of vascular thrombosis, disease activity, and immunosuppressive therapy (steroids, azathioprine) were assessed.
Main Results:
- A significantly higher prevalence of aCL was observed in CD patients (11.0%) compared to controls (2.5%; P < 0.02).
- No correlation was found between aCL positivity and a history of vascular thrombosis in CD patients.
- aCL presence did not correlate with clinically active intestinal disease (P = 0.77) or current immunosuppressive therapy (P = 0.95).
Conclusions:
- Patients with Crohn's disease exhibit a significantly higher prevalence of anticardiolipin antibodies.
- The presence of aCL in CD patients is not associated with a history of vascular thrombosis or current disease activity.
Objectives:
Anticardiolipin antibodies belong to the group of antiphospholid antibodies, and may be seen in association with endothelial damage and recurrent vascular thrombosis. The aim of our study was to determine in patients with Crohn's disease the frequency of anticardiolipin antibodies, and to correlate their presence with clinical activity and treatment of the disease.
Methods:
One hundred and thirty-eight sera from patients with Crohn's disease and 118 from age-matched controls were tested for IgG anticardiolipin antibodies. In the Crohn's disease group, we determined whether the patients had a past history of vascular thrombosis, a clinically active intestinal disease, or a current immunosuppressive therapy (steroids or azathioprine).
Results:
Anticardiolipin antibodies were found significantly more often in patients with Crohn's disease than in controls: 11.0% versus 2.5%, P < 0.02. Three patients with Crohn's disease had a past history of vascular thrombosis, but none of them had anticardiolipin antibodies. The presence of anticardiolipin antibodies was not correlated with the fact that patients had a clinically active disease (P = 0.77), or a current immunosuppressive therapy at the time of the serological test (P = 0.95).
Conclusions:
There is a significantly high prevalence of patients with anticardiolipin antibodies during Crohn's disease. The positivity of the test does not seem to be correlated to the existence of a past history of vascular thrombosis, nor to the clinical activity of the disease.
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