Altered uric acid metabolism in isolated colonic Crohn's disease but not ulcerative colitis

作者：Feng Zhu, Dengyu Feng, Tenghui Zhang, Lili Gu, Weiming Zhu, Zhen Guo, Yi Li, Nan Lü, Jianfeng Gong, Ning Li · 发表于：Journal of Gastroenterology and Hepatology · 年份：2018 · DOI：10.1111/jgh.14356 · 被引用次数：38 · 研究领域：Gout, Hyperuricemia, Uric Acid、Inflammatory Bowel Disease、Rheumatoid Arthritis Research and Therapies

BACKGROUND AND AIM: Patients with inflammatory bowel disease (IBD) have higher incidence of developing nephrolithiasis. Increased uric acid production induced by Saccharomyces cerevisiae exacerbates colitis in mice. We aimed to evaluate the association between serum uric acid level and disease activity in IBD population. METHODS: Four hundred and thirty-five patients enrolled in Jinling Hospital from January 1, 2015 to August 31, 2017 were included in the retrospective study. Clinical parameters were collected and compared with non-IBD matched controls (n = 51). Serum uric acid to creatinine ratio (UA/Cr) was used as a biomarker for uric acid metabolism. Sixty-five active IBD patients were longitudinally studied to investigate the UA/Cr before and after therapy. Linear mixed models were estimated for Crohn's disease (CD) group to explore the relationship between UA/Cr and other parameters. RESULTS: Uric acid to creatinine ratio was significantly correlated with Crohn's disease activity index (ρ = 0.184, P = 0.002) and Harvey Bradshaw index (ρ = 0.154, P = 0.010) and C-reactive protein (ρ = 0.591, P < 0.001) in CD group. Colonic CD and anti-Saccharomyces cerevisiae antibody (ASCA) positive CD had an increased UA/Cr compared with L1, L3, and ASCA negative CD (P = 0.027, P = 0.0013, and P = 0.043, respectively). A significant decrease in UA/Cr was observed after induction therapy in active CD (P = 0.0002) but not in ulcerative colitis (P = 0.076). CONCLUSION: Uric acid to creati...