Lectin Staining Shows no Evidence of Involvement of Glycocalyx/Mucous Layer Carbohydrate Structures in Development of Celiac Disease

作者：Toft Hansen Henrik^*; Nielsen Christian; Biagini Matteo; Hu**y Steffen; Lillevang Soren T

来源：Nutrients, 2013, 5(11): 4540-4552.

DOI：10.3390/nu5114540

• pediatric celiac disease
• type 1 diabetes
• duodenal biopsies
• glycosylation
• lectin staining

The presence of unique carbohydrate structures in the glycocalyx/mucous layer of the intestine may be involved in a susceptibility to celiac disease (CD) by serving as attachment sites for bacteria. This host-microbiota interaction may influence the development of CD and possibly other diseases with autoimmune components. We examined duodenal biopsies from a total of 30 children, of which 10 had both celiac disease (CD) and type 1 diabetes (T1D); 10 had CD alone; and 10 were suspected of having gastrointestinal disease, but had normal duodenal histology (non-CD controls). Patients with both CD and T1D were examined before and after remission following a gluten-free diet. We performed lectin histochemistry using peanut agglutinin (PNA) and Ulex europaeus agglutinin (UEA) staining for Gal-(1,3)-GalNAc and Fuc1-2Gal-R, respectively, of the glycocalyx/mucous layer. The staining was scored based on dissemination of stained structures on a scale from 0 to 3. Evaluation of the scores revealed no difference between biopsies obtained before and after remission in the group of children with both CD and T1D. A comparison of this pre-remission group with the children who had CD alone or the non-CD controls also showed no significant differences. Based on our material, we found no indication that the presence of Gal-(1,3)-GalNAc or Fuc1-2Gal-R is involved in the susceptibility to CD, or that the disease process affects the expression of these carbohydrates.

• 出版日期2013-11