The intestinal vitamin D receptor in inflammatory bowel disease: inverse correlation with inflammation but no relationship with circulating vitamin D status.
Mayur Garg, Simon G Royce, Chris Tikellis, Claire Shallue, Pavel Sluka, Hady Wardan, Patrick Hosking, Shaun Monagle, Merlin Thomas, John S Lubel, Peter R Gibson
Therapeutic Advances in Gastroenterology | Published : 2019
Background: The intestinal vitamin D receptor (VDR) remains poorly characterized in patients with inflammatory bowel disease (IBD). Methods: Colonoscopic biopsies and intestinal resection specimens from the terminal ileum, ascending and sigmoid colon, from patients with and without IBD, were analyzed for VDR mRNA quantification by polymerase chain reaction, and protein localization and semi-quantification by immunohistochemistry. The relationship between VDR and intestinal inflammation, serum 25(OH)D and oral vitamin D intake was elicited. Results: A total of 725 biopsies from 20 patients with Crohn's disease (CD), 15 with ulcerative colitis (UC) and 14 non-IBD controls who underwent colonos..View full abstract