今天是2024年12月14日 星期六 bsnc 退出

Serum 25-hydroxyvitamin D concentration is inversely associated with mucosal inflammation in patients with ulcerative colitis

http://www.firstlight.cn2018/12/3

[作者] Katherine Meckel Yan Chun Li

[单位] Section of Gastroenterology, Hepatology, and Nutrition, 4 Inflammatory Bowel Disease Center, and Departments of 5 Health Sciences and 6 Pathology, University of Chicago Medicine, Chicago, IL

[摘要] Background: Vitamin D exerts anti-inflammatory actions both in vitro and in murine models of colitis. In previous studies, we demonstrated that vitamin D protects against the development of colitis by maintaini…

[关键词] inflammatory bowel disease mucosal inflammation tight junction ulcerative colitis vitamin D

Background: Vitamin D exerts anti-inflammatory actions both in vitro and in murine models of colitis. In previous studies, we demonstrated that vitamin D protects against the development of colitis by maintaining the integrity of the intestinal mucosal barrier.

Objective: We sought to evaluate whether deficient serum 25 hydroxyvitamin D [25(OH)D] concentrations are associated with increased mucosal inflammation, a loss of epithelial junctional proteins, and an increase in mucosal inflammatory cytokines in patients with ulcerative colitis (UC).

Design: We prospectively enrolled 230 subjects with UC. Serum 25(OH)D concentrations were compared with the Mayo endoscopic score, the total Mayo score, and histologic activity. Colonic mucosal expression concentrations of vitamin D receptor (VDR), E-cadherin, zonula occluden 1 (ZO-1), occludin, claudin-2, tumor necrosis factor α (TNF-α), and interleukin 8 (IL-8) were compared between dichotomous groups with low or high serum 25(OH)D concentrations.

Results: The mean serum 25(OH)D concentration was 21.8 ng/mL. Subjects stratified by concentrations included 12.6% ≥30 ng/mL, 45.6% ≥20 to <30 ng/mL, 37.4% ≥10 to <20 ng/mL, and 4.4% <10 ng/mL. There was an inverse association between serum 25(OH)D concentrations and mucosal inflammation as assessed by the Mayo endoscopy score (P = 0.01), disease activity as indicated by the total Mayo score (P = 0.001), and histologic activity (P = 0.02). A serum 25(OH)D concentration <20 ng/mL was associated with decreased mucosal transcript and protein expression concentrations of VDR, E-cadherin, and occludin as well as decreased protein expression of ZO-1, whereas TNF-α and IL-8 mucosal transcript expression concentrations were increased.

Conclusions: In UC patients, serum 25(OH)D concentration is inversely correlated with mucosal inflammation and disease activity. These results, coupled with the findings that serum 25(OH)D concentrations correlate with the mucosal expression of VDR as well as epithelial junction proteins and inversely with proinflammatory cytokines, suggest that vitamin D deficiency may contribute to UC inflammation by disrupting epithelial barrier function.

存档附件原文地址

原文发布时间:2016/6/8

引用本文:

Katherine Meckel;Yan Chun Li.Serum 25-hydroxyvitamin D concentration is inversely associated with mucosal inflammation in patients with ulcerative colitishttp://bsnc.firstlight.cn/View.aspx?infoid=3907674&cb=Z07870000000
发布时间:2016/6/8.检索时间:2024/12/14

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...