Journal Article
. 2009 Apr; 90(2):141-7.
doi: 10.1111/j.1365-2613.2008.00627.x.

The serum D-xylose test as a useful tool to identify malabsorption in rats with antigen specific gut inflammatory reaction

Danielle Mota Fontes Antunes 1 Janilda Pacheco da Costa  Sylvia Maria Nicolau Campos  Patrícia Olaya Paschoal  Valéria Garrido  Munique Siqueira  Gerlinde Agate Platais Brasil Teixeira  Gilberto Perez Cardoso  
Affiliations
  • PMID: 19335552
  •     18 References
  •     2 citations

Abstract

The inappropriate immune response to foods, such as peanut, wheat and milk may be the basis in the pathogenesis of enteropathies like coeliac and Crohn disease, which present small intestinal malabsorption. A number of recent studies have utilized d-xylose absorption as an investigative tool to study small intestinal function in a variety of clinical settings. Thus, the aim of this experimental study was to evaluate the intestinal absorption of D-xylose in an antigen-specific gut inflammatory reaction rat model. Animals of the experimental group were inoculated with peanut protein extract before their exposure to a challenge diet containing exclusively peanut seeds to induce the gut inflammatory reaction caused by peanut allergy. Our results show that systemic inoculation with peanut protein extract renders significantly higher antibody titres (5.085 +/- 0.126 units) (P < 0.0001) than control rats (0.905 +/- 0.053 units) and that the antibody titres correlate positively to an inflammatory alteration of the gut morphology (P < 0.0001). Animals pertaining to the experimental group showed an intestinal absorption of D-xylose lower than control rats (P < 0.0001). We also observed that D-xylose absorption correlates negatively with IgG titres and positively with morphometric parameters (Pearson correlation). In conclusion, the use of serum D-xylose test was useful to identify the presence of small intestinal malabsorption in our antigen specific gut inflammatory reaction rat model.

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