Imbalance of the renin-angiotensin system may contribute to inflammation and fibrosis in IBD: a novel therapeutic target?
Mayur Garg, Simon G Royce, Chris Tikellis, Claire Shallue, Duygu Batu, Elena Velkoska, Louise M Burrell, Sheila K Patel, Lauren Beswick, Anvesh Jackson, Kaushali Britto, Matthew Lukies, Pavel Sluka, Hady Wardan, Yumiko Hirokawa, Chin Wee Tan, Maree Faux, Antony W Burgess, Patrick Hosking, Shaun Monagle Show all
Gut | Published : 2019
OBJECTIVE: We evaluated the influence of the renin-angiotensin system (RAS) on intestinal inflammation and fibrosis. DESIGN: Cultured human colonic myofibroblast proliferation and collagen secretion were assessed following treatment with angiotensin (Ang) II and Ang (1-7), their receptor antagonists candesartan and A779, and the ACE inhibitor captopril. Circulating and intestinal RAS components were evaluated in patients with and without IBD. Disease outcomes in patients with IBD treated with ACE inhibitors and angiotensin receptor blockers (ARBs) were assessed in retrospective studies. RESULTS: Human colonic myofibroblast proliferation was reduced by Ang (1-7) in a dose-dependent manner (p<..View full abstract