Prasenjit Das, Sudha Battu, Lalita Mehra, Alka Singh, Muzaffar Ahmad, Ashish Agarwal, Ashish Chauhan, Anam Ahmad, Sreenivas Vishnubhatla, Siddhartha Datta Gupta, Vineet Ahuja, Govind Makharia
OBJECTIVES: We hypothesized that crypt failure in the small bowel results in villous flattening in patients with celiac disease (CeD). We investigated whether alterations in the stem cell niche (ISC) are responsible for this phenomenon. MATERIALS AND METHODS: We included 92 duodenal (D2/3) biopsies from treatment-naive patients of CeD and 37 controls. All underwent screening for serum anti-tissue transglutaminase and endoscopic upper small bowel biopsy. Immunohistochemical markers were used to investigate ISC niche alterations, including LGR5 for crypt basal cells (CBC), Bmi1 for position 4+ cells, β-Defensin for Paneth cells, R-spondin1 as WNT activator, transcription factor-4 as WNT transcription factor, BMP receptor1A as WNT inhibitor, fibronectin-1 as periepithelial stromal cell marker, H2AX as apoptosis marker, and Ki67 as proliferation marker...
February 19, 2024: Indian Journal of Pathology & Microbiology