Determination of anti-anisakis simplex antibodies and relationship with αβ and γδ lymphocyte subpopulations in patients with Crohn's Disease
Benet-Campos, Carmen; Cuéllar, Carmen; García-Ballesteros, Carlos; Zamora, Vega; Gil-Borrás, Rafael; catalan-Serra, Ignacio; López-Chulía, Francisca; Andreu-Ballester, Juan Carlos
Journal article, Peer reviewed
Published version
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http://hdl.handle.net/11250/2491508Utgivelsesdato
2017Metadata
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Sammendrag
Background
The etiology of Crohn’s disease (CD) is still unknown although new theories are based on defects in innate immunity. We have previously shown a decrease in γδ T cells in CD patients. Previous studies have shown a high prevalence of anti-A. simplex immunoglobulins in CD patients. The diminution of γδ T cells in the peripheral blood and intestinal mucosa of CD patients may create a state of immunosuppression that would facilitate A. simplex infection.
Aims
To study the antibody responses to Anisakis antigens in Crohn’s disease patients and its relationship with αβ and γδ T cell subsets.
Methods
We recruited 81 CD patients and 81 healthy controls. αβ and γδ T cell subsets and anti-A. simplex antibodies were measured.
Results
Levels of anti-A. simplex IgG and IgM were significantly increased in CD patients. Almost 20% of CD patients were positive for IgG and IgM anti-A. simplex versus only 3.7 and 2.5%, respectively, in normal subjects. However, lower specific IgA levels were observed in the group of CD patients versus healthy subjects. We found an association between CD3 + CD8 + γδ subset and IgM anti-A. simplex levels. In ileal cases and stricturing behavior of CD, we observed the highest levels of specific antibodies with the exception of anti-A. simplex IgA.
Conclusions
The relationship of specific antibodies with a γδ T cell deficiency makes these cell candidates to play a role in the immune response against Anisakis. In addition, anti-Anisakis antibodies could be considered as markers of risk of progression in CD.