Refractory sprue

Area of Science:

• Gastroenterology and Immunology
• T-cell mediated disorders
• Autoimmune diseases

Background:

• Celiac disease is an immune response to gluten, a protein found in wheat, barley, and rye.
• Gluten intolerance can lead to a T cell-mediated disorder, causing damage to the small intestine.
• Refractory sprue is a severe complication characterized by persistent symptoms despite a strict gluten-free diet.

Purpose of the Study:

• To define and classify patients with refractory sprue.
• To investigate the role of aberrant intraepithelial lymphocytes in refractory sprue.
• To explore potential treatment options and prognosis for refractory sprue.

Main Methods:

• Diagnosis of refractory sprue through exclusion of other conditions in poorly responsive patients.
• Identification and characterization of aberrant, clonally expanded, intraepithelial lymphocytes.
• Review of existing literature on well-characterized refractory sprue patient series.

Main Results:

• Continued gluten ingestion is the primary reason for non-response to a gluten-free diet.
• Aberrant clonal intraepithelial T-cell populations are key diagnostic markers for refractory sprue.
• Refractory sprue can occur with or without prior celiac disease diagnosis, and after initial dietary response.

Conclusions:

• Refractory sprue is a serious condition with a generally poor prognosis.
• Some patients may benefit from corticosteroids and immunosuppressive therapies.
• The presence of aberrant T-cells suggests refractory sprue may represent a cryptic intestinal T-cell lymphoma.