Abstract

To date, anti-Saccharomyces cerevisiae antibodies (ASCA) and atypical perinuclear antineutrophil cytoplasmic autoantibodies known as NANA are still the paramount serological markers of IBD. They are relevant for their predictive value to discriminate indeterminate colitis, but also for their prognostic value and more recently observed, for their correlation with disease phenotypes especially in Crohn's disease. This article also gives an overall picture of the others IBD serological markers such as antibodies to exocrine pancreas, and more recently discovered antimicrobial antigens antibodies (such as anti-Escherichia coli outer membrane porin or OmpC, anti-Pseudomonas fluorescens or I2, anti-CBir1 flagellin-derived protein, anti-Bacteroides caccae OmpW, anti-Mycobacterium avium subspecies paratuberculosis or MAP) and antiglycan antibodies (such as antilaminaribioside carbohydrate antibody or ALCA, antichitobioside carbohydrate antibody or ACCA and antimannobioside carbohydrate antibody or AMCA). Les marqueurs de référence de dépistage des MICI restent à ce jour les anticorps anti-Saccharomyces cerevisiae (ASCA) et les ANCA atypiques de type NANA. Leur intérêt réside également dans leur valeur prédictive dans les colites indéterminées, dans leur valeur pronostique au cours des MICI et plus récemment dans leur association à des phénotypes particuliers, notamment dans la maladie de Crohn. Cet article fait également le point sur la place des autres marqueurs des MICI dont les anticorps antipancréas exocrine et des marqueurs plus récents comme les anticorps anti-antigènes microbiens (antiporine OmpC de l’Escherichia coli, antiséquence I2 du Pseudomonas fluorescens, antiprotéine CBir1 dérivée de la flagelline, anti-OmpW du Bacteroides caccae, anti-MAP pour Mycobacterium avium subspecies paratuberculosis) et les anticorps antiglycans (antimannobioside, antilaminaribioside et antichitobioside).

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