Elution of antitransglutaminase antibodies from duodenal biopsies: a novel approach in the diagnosis of celiac disease
Celiac disease (CeD) is a disease more prevalent and multisymptomatic than was earlier recognized. Whereas prompt initiation of gluten‐free diet (GFD) is beneficial in relieving the symptoms, an accurate CeD diagnosis
is necessary also to avoid years of restricted diet on uncertain grounds. We propose a new diagnostic method, based on elution of deposited antibodies against transglutaminase (anti‐tTG) from duodenal biopsies in patients with symptoms and screening serology analyses
suggestive of CeD. The eluates were analyzed in a Phadia 250 fluoroimmunoassay, demonstrating elevated concentrations of anti‐tTG in CeD patients, corresponding to serology and histopathology findings.
In one case histology was inconclusive, displaying only unspecific inflammation, but eluted anti‐tTG was positive. This patient has clinically improved following GFD. We conclude that our novel method represents a new tool in the diagnostic
work up in CeD. The detection of deposited anti‐tTG at the site of inflammation appears to provide a high sensitivity and specificity using a technique that is quick, simple and reliable. Further studies are needed for optimization and elucidation
of suitable applications for this elution method.