Abstract:
BACKGROUND:A common feature of preclinical models of colitis is that the time-course, magnitude, and persistence of inflammation vary considerably within the experimental animal group. Accordingly, noninvasive, serial quantification of colonic inflammation could advantageously guide dosing regimens and assess drug efficacy, thus enhancing the value of colitis models in research. This investigation using magnetic resonance imaging (MRI) was therefore undertaken to objectively determine inflammatory progression, variability, and response to therapy associated with trinitrobenzene sulfonic acid (TNBS)-induced colitis in Wistar rats. METHODS:Rats underwent TNBS treatment on Day 0 and received sulfasalazine or vehicle (methylcellulose) orally, daily, from Day -1 (prophylactically) or Day 2 (therapeutically). T2-weighted and semidynamic T1-weighted contrast-enhanced MRI (CE-MRI) was repeated over 7-10 days to measure colon wall thickness and perfusion-related aspects of inflammation. Rectal bleeding, stool consistency, and disease activity were scored throughout and colon pathology determined terminally. RESULTS:Principal component analysis of the CE-MRI time-series highlighted colon wall and mesenteric inflammation, which increased by 6-8x naïve values. Peristaltic artifacts were distinguished from perfusion changes using the normalized temporal standard deviation. MRI correlated strongly with terminal colon weight (mean correlation r = 0.8), well with body weight change (r = -0.7), but little with conventional clinical scores. Sulfasalazine reduced inflammation administered prophylactically and therapeutically. CONCLUSIONS:Inflammation and therapeutic efficacy can be sensitively quantified noninvasively using MRI in TNBS-treated rats. This methodology provides unique and objective in vivo measures of inflammation that can guide dosing strategies, enhancing colitis research effectiveness and the assessment of potential IBD therapeutics.
journal_name
Inflamm Bowel Disjournal_title
Inflammatory bowel diseasesauthors
Pohlmann A,Tilling LC,Robinson A,Woolmer O,McCleary S,Kruidenier L,Warnock LC,Lewis HD,Hobson AR,James MFdoi
10.1002/ibd.20800subject
Has Abstractpub_date
2009-04-01 00:00:00pages
534-45issue
4eissn
1078-0998issn
1536-4844journal_volume
15pub_type
杂志文章abstract:BACKGROUND:Intestinal stenosis is a frequent complication of Crohn's disease, often leading to repeated bowel obstruction and surgery. The prevalence of small bowel stenosis has ranged from 20% to 40% and from 7% to 15% in patients with colonic disease. Although balloon dilation is the initial preferred approach, many ...
journal_title:Inflammatory bowel diseases
pub_type: 临床试验,杂志文章,评审
doi:10.1002/ibd.20318
更新日期:2008-02-01 00:00:00
abstract:BACKGROUND:The Crohn's Disease Activity Index (CDAI) has been criticized for being weakly correlated with bowel inflammation. We assessed correlation between Simple Endoscopic Score for Crohn's Disease (SES-CD) and individual CDAI items stratified by disease location to better understand this relationship. METHODS:We ...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1093/ibd/izz241
更新日期:2020-01-06 00:00:00
abstract:BACKGROUND:CALM was a randomized phase 3 trial in patients with Crohn's disease (CD) that demonstrated improved endoscopic outcomes when treatment was escalated based on cutoffs for inflammatory biomarkers, fecal calprotectin (FC), C-reactive protein (CRP), and CD Activity Index (CDAI) remission vs CDAI response alone....
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1093/ibd/izaa025
更新日期:2020-09-18 00:00:00
abstract::Chronic inflammatory bowel disease (IBD) presents as two major clinical forms, Crohn's disease (CD) and ulcerative colitis (UC). Genetic epidemiological studies and animal models suggest that inherited factors play significant roles in the susceptibility to both forms of IBD. From four genome-wide scans, putative susc...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1097/00054725-199911000-00005
更新日期:1999-11-01 00:00:00
abstract:Background:Patients requiring optimization of therapy for suboptimal response and/or targeting more robust outcomes may eventually reach high serum levels. Data evaluating the relationship between infliximab concentration and toxicity are limited. The aim of this study was to evaluate the frequency of adverse events (A...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1093/ibd/izy066
更新日期:2018-07-12 00:00:00
abstract::Inflammatory bowel disease (IBD) is a chronic intestinal disorder comprising 2 distinct but often overlapping diseases: Crohn's disease and ulcerative colitis. Although much research to identify the etiology of IBD has focused on genetic constitution, infectious causes, and immune dysregulation, its exact cause and pa...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,评审
doi:10.1002/ibd.21061
更新日期:2010-04-01 00:00:00
abstract:BACKGROUND AND AIMS:Poor sleep quality in Crohn's disease (CD) is associated with histologic activity and clinical relapse. We sought to characterize sleep dysfunction and determine the effect of poor sleep quality on risk for hospitalization and surgery. METHODS:Clinical data were collected for CD subjects including ...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1093/ibd/izz258
更新日期:2020-07-17 00:00:00
abstract::Crohn's disease is associated with an excessive T helper (TH) type 1 inflammatory immune response. Reducing the influx of disease-associated CD4+ TH1 cells into the inflamed intestine is likely to be beneficial in preventing a disease flare-up and even possibly in reducing the effect of acute disease. Thiazolidenedion...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1097/01.mib.0000160770.94199.9b
更新日期:2005-03-01 00:00:00
abstract:BACKGROUND:A high-fat diet is a risk factor for the development of inflammatory bowel disease (IBD) in humans. Deoxycholate (DOC) is increased in the colonic contents in response to a high-fat diet. Thus, an elevated level of DOC in the colonic lumen may play a role in the natural course of development of IBD. METHODS...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1097/01.MIB.0000209789.14114.63
更新日期:2006-04-01 00:00:00
abstract:BACKGROUND:There is a recognized association between pediatric inflammatory bowel disease (IBD) and cerebral thromboembolic events (CTEs). Historical reporting had described the association as strongest between ulcerative colitis (UC), rather than Crohn's disease (CD). We describe the incidence and outcome of CTE in pe...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1002/ibd.21113
更新日期:2010-04-01 00:00:00
abstract::Inflammatory bowel disease is associated with industrialization, and its incidence has increased markedly over time. The prospect of reversing these trends motivates the search for the agent(s) involved. Modernity entails several physical and behavioral modifications that compromise both the photosynthesis of cholecal...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,评审
doi:10.1097/MIB.0b013e31828a3b6f
更新日期:2013-09-01 00:00:00
abstract:BACKGROUND:Childhood-onset Crohn's disease (CD) might reflect a more severe form of disease. To test this hypothesis we analyzed the long-term natural history of CD in an adult cohort of patients with childhood-onset compared to adult-onset CD. METHODS:We selected 206 childhood-onset CD patients among 2992 adult patie...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1002/ibd.21152
更新日期:2010-06-01 00:00:00
abstract:BACKGROUND:Children with inflammatory bowel disease (IBD) undergo imaging using ionizing radiation and may be exposed to high cumulative radiation. We hypothesized that children with IBD have high exposure to radiation from medical imaging. METHODS:An Institutional Review Board (IRB)-approved retrospective chart revie...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1002/ibd.21626
更新日期:2011-11-01 00:00:00
abstract::We report genome-wide linkage results using model-free linkage analysis (Allegro) of 358 autosomal microsatellites in 260 new inflammatory bowel disease-affected relative pairs from 139 Caucasian families, including 108 Crohn's disease-affected relative pairs and 72 ulcerative colitis-affected relative pairs. Our resu...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1097/00054725-200409000-00004
更新日期:2004-09-01 00:00:00
abstract:BACKGROUND:Chronic inflammation in ulcerative colitis (UC) is a sizeable risk factor for colorectal cancer (CRC). Interleukin-13 (IL-13) is elevated in the UC mucosa and may induce dysregulated signaling in neighboring intestinal epithelial cells (IECs) and thus function as a tumorogenic cytokine. METHODS:Expression o...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,收录出版
doi:10.1002/ibd.21133
更新日期:2010-05-01 00:00:00
abstract:BACKGROUND:Inflammatory bowel disease (IBD) is a multifactorial disorder, with the innate and adaptive immune cells contributing to disease initiation and progression. However, the intricate cross-talk between immune cell lineages remains incompletely understood. The role of CD8+ T cells in IBD pathogenesis has been un...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1093/ibd/izz191
更新日期:2020-01-06 00:00:00
abstract:BACKGROUND:Adipose tissue is recognized as a compartment secreting highly active molecules. Creeping fat represents a characteristic feature of Crohn's disease (CD). Proinflammatory or anti-inflammatory adipose-derived secretory products, now generally called adipocytokines, may play a role in the pathogenesis of CD. ...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1097/00054725-200606000-00005
更新日期:2006-06-01 00:00:00
abstract:BACKGROUND:It is unclear if traditional histopathology and noninvasive blood-based tests are sufficiently accurate to detect cytomegalovirus (CMV) reactivation in inflammatory bowel disease. Therefore, we assessed the diagnostic accuracy of these tests compared with immunohistochemistry (IHC) and tissue polymerase chai...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,meta分析,评审
doi:10.1097/MIB.0000000000001073
更新日期:2017-04-01 00:00:00
abstract:BACKGROUND:Clostridium difficile infection (CDI) is common in patients with inflammatory bowel disease (IBD), often leading to diagnostic confusion and delays in IBD therapy escalation. This study sought to assess outcomes after CDI in IBD patients exposed to new or escalated immunosuppressive therapy. METHODS:This mu...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,多中心研究
doi:10.1093/ibd/izy308
更新日期:2019-03-14 00:00:00
abstract:BACKGROUND:Increased strength of red blood cell (RBC) aggregates are present during the acute inflammatory response and contribute to erythrocyte aggregation and may lead to microvascular dysfunction. Inflammatory bowel diseases (IBDs) are characterized by damage to the bowel wall. This damage may be at least partially...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1002/ibd.20838
更新日期:2009-05-01 00:00:00
abstract::Crohn and Rosenberg first highlighted the increased risk of colorectal cancer in ulcerative colitis in 1925. Cancer rates as high as 34 percent after 30 yrs of disease have been reported in several population-based studies, although the reported risk varies substantially. Lower rates have been reported in: population-...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,评审
doi:10.1002/ibd.21227
更新日期:2010-11-01 00:00:00
abstract::Restorative proctocolectomy with ileal-pouch anal anastomosis (RPC) is the operation of choice for ulcerative colitis (UC) patients requiring surgery. It is also used for patients with familial adenomatous polyposis (FAP). Pouchitis accounts for 10% of pouch failures. It is an idiopathic inflammatory condition that ma...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,评审
doi:10.1002/ibd.21911
更新日期:2012-06-01 00:00:00
abstract:BACKGROUND:Although many genetic variants are identified in association with Crohn's disease (CD), CARD15, IL23R, and ATG16L1 association with CD have been firmly confirmed in Caucasians of European ancestry. The prevalence of CD is rapidly rising in Brazil, where European ancestry is firmly admixed with natives and Af...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1002/ibd.20372
更新日期:2008-05-01 00:00:00
abstract::Tolerance, the regulated inability to respond to a specific immunologic stimulant, is a physiological event important to normal immune function. Just as loss of tolerance to self-proteins results in autoimmune diseases, we assert that loss of tolerance to commensal flora in the intestinal lumen leads to inflammatory b...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,评审
doi:10.1097/00054725-200407000-00023
更新日期:2004-07-01 00:00:00
abstract:BACKGROUND:Infliximab is efficacious in the management of moderate to severe Crohn's disease (CD). There are limited data regarding performance of infliximab in patients who require reinitiation of maintenance dosing following previous irregular exposure. METHODS:This was a retrospective, observational study of CD pat...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1002/ibd.21164
更新日期:2010-07-01 00:00:00
abstract:BACKGROUND:Histamine is a key immunoregulatory mediator in immediate-type hypersensitivity reactions and chronic inflammatory responses, in particular histamine suppresses proinflammatory responses to bacterial ligands, through histamine receptor 2 (H2R). The aim of this study was to investigate the effects of histamin...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1097/MIB.0000000000000825
更新日期:2016-07-01 00:00:00
abstract:BACKGROUND:The inflammatory bowel diseases (IBDs) are chronic inflammatory disorders, associated with genetic, immunologic, and environmental factors. Although hundreds of genes are implicated in IBD etiology, it is likely that additional genes play a role in the disease process. We developed a machine learning-based g...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1097/MIB.0000000000001222
更新日期:2017-09-01 00:00:00
abstract:BACKGROUND:Genetic predisposition as a cause of inflammatory bowel disease (IBD) has been proven by both family and twin studies and genetic variants associated with the disease have been identified. The aim of our study was to determine the concordance rates for IBD in German twin pairs and to evaluate clinical charac...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1002/ibd.20380
更新日期:2008-07-01 00:00:00
abstract:BACKGROUND:The clinical implication of Clostridium difficile infection (CDI) in patients with ileal pouch-anal anastomosis (IPAA) for underlying inflammatory bowel disease (IBD) has not been well studied. This study was designed to investigate the cumulative incidence, risk factors, and outcome of CDI in patients with ...
journal_title:Inflammatory bowel diseases
pub_type: 临床试验,杂志文章
doi:10.1097/MIB.0b013e318280fcb9
更新日期:2013-02-01 00:00:00
abstract:BACKGROUND:Children with Crohn's disease (CD) suffer from malnutrition. Understanding substrate utilization during exercise may help patients with CD sustain a healthy active lifestyle without compromising nutrition. The aim of this study was to determine whether substrate utilization and bioavailability during exercis...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1097/01.MIB.0000436958.54663.4f
更新日期:2013-11-01 00:00:00