Non-celiac gluten sensitivity Non-celiac gluten sensitivity Non-celiac gluten sensitivity (NCGS) or gluten sensitivity is defined as "a clinical entity induced by the ingestion of gluten leading to intestinal and/or extraintestinal symptoms that improve once the gluten-containing foodstuff is removed from the diet, and celiac disease and wheat allergy have been excluded". NCGS is included in the spectrum of gluten-related disorders. The definition and diagnostic criteria of non-celiac gluten sensitivity were debated and established by three consensus conferences. The pathogenesis of NCGS is not yet well understood. There is evidence that not only gliadin (main cytotoxic antigen of gluten), but also other proteins present
Gliadin main types of gliadin (α, γ, and ω), to which the body is intolerant in coeliac (or celiac) disease. Diagnosis of this disease has recently been improving. Gliadin can cross the intestinal epithelium. Breast milk of healthy human mothers who eat gluten-containing foods presents high levels of non-degraded gliadin. The α, γ, and ω gliadin types are separated and distinguished based on their amino acid sequences. Gliadins are prolamins and are separated on the basis of electrophoretic mobility and isoelectric focusing. Gliadin peptides cross the intestinal barrier by active transport.. Gliadins are known for their role, along with glutenin, in