Abstract

ORIBE BUBICA, Julieta et al. Niveles de calprotectina fecal en pacientes con anticuerpos anti-transglutaminasa positivos y pacientes con dieta libre de gluten. Acta bioquím. clín. latinoam. [online]. 2020, vol.54, n.1, pp.29-38. ISSN 0325-2957.

The determination of fecal calprotectin has been strengthened in recent years as a useful marker of gastrointestinal pathologies. The objective of this study was to determine the levels of fecal calprotectin (FCP), interleukin-6 (IL-6) and C-reactive protein (CRP) in three groups of patients: with de novo diagnosis of celiac disease, with previous diagnosis and gluten-free diet (GFD) and a control group. Samples were collected from 79 patients between 18 and 65 years old. In all cases, FCP, IL-6 and RCP were determined as markers of inflammation and anti-transglutaminase IgA and deaminated anti-gliadin IgA and IgG antibodies as serological markers. Significantly more increased FCP values were found in the de novo group (124.06 μg/g) than in the group with DLG (23.61 μg/g) and the control group (16.91 μg/g). No differences were found between the group with GFD and the negative. The same trend was observed for IL-6 with values in the de novo group of 2.39 μg/dL, 1.74 μg/dL in the group with gluten free diet and 1.41 μg/dL in the negative control. No significant differences were found in the analysis of RCP results. Excellent sensitivity (98.0%) and specificity (96.6%) were found in the capability of the FCP to differentiate anti-transglutaminase IgA values higher or lower than the cut-off point when the Youden index was estimated. The FCP could be considered as a possible sensitive marker to indicate intestinal inflammation in a non-invasive manner in celiac disease.

Keywords : Fecal calprotectin; Anti-transglutaminase IgA; Deaminated anti-gliadin IgA; Interleukin-6.

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