Renin-Angiotensin System Associated with Risk of Upper GI Mucosal Injury Induced by Low Dose Aspirin Renin Angiotensin System Genes’ Polymorphism
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Akiko Shiotani Ryuji Nishi Yoshiyuki Yamanaka Takahisa Murao Hiroshi Matsumoto Ken-ichi Tarumi Tomoari Kamada Takashi Sakakibara Ken
- چاپ و سال / کشور: 2010
Description
Background We have previously shown that co-treatment of angiotensin type 1 receptor (AT1R) blocker (ARB) or angiotensin converting enzyme (ACE) inhibitor seem to reduce peptic ulcer among patients taking low dose aspirin. It is reported that a series of renin-angiotensin system (RAS) gene polymorphisms significantly influence the rate of the gene transcription. Aim The aim of this study was to examine the genotypes of RAS genes related to the risk of peptic ulcer and ulcer bleeding among patients taking low dose aspirin. Methods Patients taking 100 mg of aspirin who were planning to undergo endoscopy for surveillance or who had history of recent upper GI ulcer bleeding were included. ACE (Ins/Del), angiotensinogen (AGT; G-217A, A-20C, A-6G, T174 M, M235T), and AT1R (T-713G, C-521T, A1166C) genotypes were determined by PCR or PCR– RFLP. Results Four hundred twenty-five patients were enrolled including 68 patients with peptic ulcer and 20 patients with ulcer bleeding. Co-treatment of ARB was significantly associated with peptic ulcer and ulcer bleeding. AGT-20 CC (adjusted OR 4.94, 95% CI 1.21–20.2) was significantly associated with ulcer bleeding. The CC genotype of AT1R-521 was significantly associated with peptic ulcer only in the subgroup taking neither ACE inhibitor nor ARB. Conclusions Co-treatment of ARB reduces peptic ulcer and bleeding among patients taking low dose aspirin. RAS may play an important role in the development of upper GI mucosal injury induced by low dose aspirin.
Dig Dis Sci (2011) 56:465–471 DOI 10.1007/s10620-010-1382-3 Received: 28 May 2010 / Accepted: 29 July 2010 / Published online: 8 September 2010
