Inflammatory Bowel Disease-Related Abstracts Presented at National Conferences in the USA Are Frequently Unpublished as Full Manuscripts.

BACKGROUND: Numerous abstracts related to inflammatory bowel disease (IBD) are presented at national conferences in the USA. The overall rate of publication of these abstracts as complete manuscripts is unknown . METHODS: Abstracts submitted to the 2010 American College of Gastroenterology (ACG), Advances in Inflammatory Bowel Diseases (AIBD), and the American Gastroenterological Association abstracts at Digestive Disease Week (DDW) were reviewed. Each abstract was reviewed manually by two authors for type of research, study design, patient population, and outcome. Both PubMed and Google were then searched to determine whether the abstract was published as a full manuscript within five years of the conference. Univariate and multivariate logistic regression analysis was carried out using Stata 14.1. RESULTS: In total, 872 abstracts were reviewed. 49% (426/872) were published as complete manuscripts within five years of the conference. The average length of time to publication was 1.87 years (range 0-5). 42% of abstracts from ACG, 58% from AIBD, and 23% from DDW were eventually published (p < 0.0001). However, abstracts presented at DDW had the shortest time to publication compared to the other conferences (p = 0.002). Factors predictive of eventual publication include: number of authors (mean 7.5 for published vs 6.4 for unpublished p = 0.0001), clinical research compared to basic and translational (p = 0.026), and studies assessing drug safety with no adverse effects reported (p = 0.006). CONCLUSION: Nearly 50% of the abstracts presented at major gastroenterology conferences in the USA are published as full manuscripts 5 years after the conference. Further studies are needed to assess why so many abstracts are not published.

Visceral Adiposity Independently Predicts Time to Flare in Inflammatory Bowel Disease but Body Mass Index Does Not.

BACKGROUND: Obesity is associated with progression of inflammatory bowel disease (IBD). Visceral adiposity may be a more meaningful measure of obesity compared with traditional measures such as body mass index (BMI). This study compared visceral adiposity vs BMI as predictors of time to IBD flare among patients with Crohn's disease and ulcerative colitis. METHODS: This was a retrospective cohort study. IBD patients were included if they had a colonoscopy and computed tomography (CT) scan within a 30-day window of an IBD flare. They were followed for 6 months or until their next flare. The primary exposure was the ratio of visceral adipose tissue to subcutaneous adipose tissue (VAT:SAT) obtained from CT imaging. BMI was calculated at the time of index CT scan. RESULTS: A total of 100 Crohn's disease and 100 ulcerative colitis patients were included. The median age was 43 (interquartile range, 31-58) years, 39% had disease duration of 10 years or more, and 14% had severe disease activity on endoscopic examination. Overall, 23% of the cohort flared with median time to flare 90 (interquartile range, 67-117) days. Higher VAT:SAT was associated with shorter time to IBD flare (hazard ratio of 4.8 for VAT:SAT ≥1.0 vs VAT:SAT ratio <1.0), whereas higher BMI was not associated with shorter time to flare (hazard ratio of 0.73 for BMI ≥25 kg/m2 vs BMI <25 kg/m2). The relationship between increased VAT:SAT and shorter time to flare appeared stronger for Crohn's than for ulcerative colitis. CONCLUSIONS: Visceral adiposity was associated with decreased time to IBD flare, but BMI was not. Future studies could test whether interventions that decrease visceral adiposity will improve IBD disease activity.

An increased ratio of visceral to subcutaneous adipose tissue was associated with a shorter time to flare in patients with both Crohn's and ulcerative colitis. Conversely, increased body mass index was not associated with a shorter time to flare in inflammatory bowel disease patients.

Obesity among those newly diagnosed with Crohn's disease and ulcerative colitis compared with the general population.

Objective: Obesity is a potentially modifiable risk factor for inflammatory bowel disease (IBD). We aimed to evaluate the body mass index (BMI) of those diagnosed with IBD early versus late in life in the context of age-adjusted background population. Design/method: Patients with a new diagnosis of IBD from 2000 to 2021 were included. Early-onset IBD was classified as age <18 and late-onset IBD classified as age ≥65. Obesity was classified as BMI ≥30 kg/m2. Population data were obtained from community surveys. Results: Included were 1573 patients (56.0%) with Crohn's disease (CD) and 1234 (44.0%) with ulcerative colitis (UC). Overall, the median BMI at IBD diagnosis was 20 kg/m2 (IQR 18-24) among those diagnosed at age <18 vs 26.9 kg/m2 (IQR 23.1-30.0) among those diagnosed at age ≥65 (rank-sum p<0.01). In all age groups, BMI was stable during the 1-year preceding IBD diagnosis. At age <18, 11.5% of the background population was obese compared with 3.8% of those with newly diagnosed CD (p<0.01) and 4.8% of those with newly diagnosed UC (p=0.05). At age ≥65, 23.6% of the population was obese compared with 24.3% of those with newly diagnosed CD (p=0.78) and 29.5% of those with newly diagnosed UC (p=0.01). Conclusion: Patients with IBD diagnosed at age <18 were less likely to be obese compared with the age-adjusted background population whereas those diagnosed at age ≥65 were more likely to be obese. Future prospective studies should investigate obesity as a modifiable risk factor for late-life IBD.

High Levels of Psychological Resilience Are Associated With Decreased Anxiety in Inflammatory Bowel Disease.

BACKGROUND: Anxiety and depression are comorbid disorders with IBD and are associated with poor outcomes. Resilience is an innate but modifiable trait that may improve the symptoms of psychological disorders. Increasing resilience may decrease the severity of these comorbid disorders, which may improve IBD outcomes. The aim of this study was to describe the association between resilience, anxiety, and depression in IBD patients. METHODS: We performed a cross-sectional study of IBD patients. Patients completed a questionnaire consisting of the Connor-Davidson Resilience Scale (CD-RISC), a measure of resilience, the Generalized Anxiety Disorder 7 (GAD-7), and the Patient Health Questionnaire-9. Primary outcome was severity of anxiety and depression in patients with high resilience. Multivariable linear regression analysis evaluated the association between severity of anxiety and depression and level of resilience. RESULTS: A sample of 288 patients was analyzed. Bivariable linear regression analysis showed a negative association between resilience and anxiety (Pearson rho = -0.47; P < .0001) and between resilience and depression (Pearson rho = -0.53; P < .0001). Multivariable linear regression indicated that high resilience is independently associated with lower anxiety and that for every 1-unit increase in CD-RISC, the GAD-7 score decreased by 0.04 units (P = .0003). Unlike anxiety, the association between resilience and depression did not remain statistically significant on multivariable analysis. CONCLUSIONS: High resilience is independently associated with lower anxiety in IBD patients, and we report a quantifiable decrease in anxiety score severity for every point of increase in resilience score. These findings suggest that IBD patients with higher resilience may have better coping mechanisms that buffer against the development of anxiety.

Treatment of pouchitis, Crohn's disease, cuffitis, and other inflammatory disorders of the pouch: consensus guidelines from the International Ileal Pouch Consortium.

Pouchitis, Crohn's disease of the pouch, cuffitis, polyps, and extraintestinal manifestations of inflammatory bowel disease are common inflammatory disorders of the ileal pouch. Acute pouchitis is treated with oral antibiotics and chronic pouchitis often requires anti-inflammatory therapy, including the use of biologics. Aetiological factors for secondary pouchitis should be evaluated and managed accordingly. Crohn's disease of the pouch is usually treated with biologics and its stricturing and fistulising complications can be treated with endoscopy or surgery. The underlying cause of cuffitis determines treatment strategies. Endoscopic polypectomy is recommended for large, symptomatic inflammatory polyps and polyps in the cuff. The management principles of extraintestinal manifestations of inflammatory bowel disease in patients with pouches are similar to those in patients without pouches.

High Levels of Psychological Resilience Associated With Less Disease Activity, Better Quality of Life, and Fewer Surgeries in Inflammatory Bowel Disease.

BACKGROUND: Stress and depression are risk factors for inflammatory bowel disease (IBD) exacerbations. It is unknown if resilience, or one's ability to recover from adversity, impacts disease course. The aim of this study was to examine the association between resilience and IBD disease activity, quality of life (QoL), and IBD-related surgeries. METHODS: We performed a cross-sectional study of IBD patients at an academic center. Patients completed the Connor-Davidson Resilience Scale questionnaire, which measures resilience (high resilience score ≥ 35). The primary outcome was IBD disease activity, measured by Mayo score and Harvey-Bradshaw Index (HBI). The QoL and IBD-related surgeries were also assessed. Multivariate linear regression was conducted to assess the association of high resilience with disease activity and QoL. RESULTS: Our patient sample comprised 92 patients with ulcerative colitis (UC) and 137 patients with Crohn disease (CD). High resilience was noted in 27% of patients with UC and 21.5% of patients with CD. Among patients with UC, those with high resilience had a mean Mayo score of 1.54, and those with low resilience had a mean Mayo score of 4.31, P < 0.001. Among patients with CD, those with high resilience had a mean HBI of 2.31, and those with low resilience had a mean HBI of 3.95, P = 0.035. In multivariable analysis, high resilience was independently associated with lower disease activity in both UC (P < 0.001) and CD (P = 0.037) and with higher QoL (P = 0.016). High resilience was also associated with fewer surgeries (P = 0.001) among patients with CD. CONCLUSIONS: High resilience was independently associated with lower disease activity and better QoL in patients with IBD and fewer IBD surgeries in patients with CD. These findings suggest that resilience may be a modifiable factor that can risk-stratify patients with IBD prone to poor outcomes.

Diagnosis and classification of ileal pouch disorders: consensus guidelines from the International Ileal Pouch Consortium.

Restorative proctocolectomy with ileal pouch-anal anastomosis is an option for most patients with ulcerative colitis or familial adenomatous polyposis who require colectomy. Although the construction of an ileal pouch substantially improves patients' health-related quality of life, the surgery is, directly or indirectly, associated with various structural, inflammatory, and functional adverse sequelae. Furthermore, the surgical procedure does not completely abolish the risk for neoplasia. Patients with ileal pouches often present with extraintestinal, systemic inflammatory conditions. The International Ileal Pouch Consortium was established to create this consensus document on the diagnosis and classification of ileal pouch disorders using available evidence and the panellists' expertise. In a given individual, the condition of the pouch can change over time. Therefore, close monitoring of the activity and progression of the disease is essential to make accurate modifications in the diagnosis and classification in a timely manner.

Higher Trough Vedolizumab Concentrations During Maintenance Therapy are Associated With Corticosteroid-Free Remission in Inflammatory Bowel Disease.

BACKGROUND AND AIMS: Vedolizumab is an anti-α4ß7 biologic approved for ulcerative colitis [UC] and Crohn's disease [CD]. We aimed to examine the association of maintenance vedolizumab concentrations with remission. METHODS: We performed a cross-sectional multi-centre study of inflammatory bowel disease [IBD] patients on maintenance vedolizumab. A homogeneous mobility shift assay [HMSA] was used to determine trough serum concentrations of vedolizumab and anti-drug antibodies [ATVs]. The primary outcome was corticosteroid-free clinical and biochemical remission defined as a composite of clinical remission, normalized C-reactive protein [CRP] and no corticosteroid use in 4 weeks. Secondary outcomes included corticosteroid-free endoscopic and deep remission. Vedolizumab concentrations were compared between patients in remission and with active disease. Logistic regression, adjusting for confounders, assessed the association between concentrations and remission. RESULTS: In total, 258 IBD patients were included [55% CD and 45% UC]. Patients in clinical and biochemical remission had significantly higher vedolizumab concentrations [12.7 µg/mL vs 10.1 µg/mL, p = 0.002]. Concentrations were also higher among patients in endoscopic and deep remission [14.2 µg/mL vs 8.5 µg/mL, p = 0.003 and 14.8 µg/mL vs 10.1 µg/mL, p = 0.01, respectively]. After controlling for potential confounders, IBD patients with vedolizumab concentrations >11.5 µg/mL were nearly 2.4 times more likely to be in corticosteroid-free clinical and biochemical remission. Only 1.6% of patients had ATVs. CONCLUSIONS: In a large real-world cohort of vedolizumab maintenance concentrations, IBD patients with remission defined by objective measures [CRP and endoscopy] had significantly higher trough vedolizumab concentrations and immunogenicity was uncommon.

Adverse Events During Anti-TNFα Therapies in IBD (Excluding Infections and Malignancies): When to Stop, Continue, or Switch Therapies.

There are several adverse events that can occur in the setting of tumor necrosis factor-α inhibitor treatment for inflammatory bowel disease. The most common side effects include infection and malignancy. There are however several less frequent adverse events that can be classified as dermatologic, neurologic, cardiac, and hepatic. The aim of this review was to assist clinicians to recognize and manage these infrequent adverse events that occur during use of tumor necrosis factor-α antagonists.

Factor VIII-Related Antigen Detects Phenotypic Change of Sinusoidal to Vascular Endothelium in Hepatic Fibrosis of Elderly Cadavers.

In advanced stages of hepatic fibrosis, the liver sinusoidal endothelium transforms to vascular endothelium with accompanying expression of factor VIII-related antigen (FVIIIRAg), a phenotypic marker of vascular endothelial cells. Liver fibrosis has been shown to be associated with aging and was found to be prevalent in elderly cadavers. Using immunohistochemistry, we studied FVIIIRAg expression in the livers of elderly cadavers with progressive stages of fibrosis. The vascular endothelium of portal tracts and central veins was stained for FVIIIRAg, providing an internal positive control. The incidence of FVIIIRAg expression was low in the sinusoids of livers that showed minimal fibrosis or perisinusoidal fibrosis but was increased in livers with advanced fibrosis (i.e., septa formation, bridging fibrosis, and cirrhosis). FVIIIRAg positive sinusoidal endothelial cells were distributed in loose aggregates in the periportal, periseptal, and midlobular parenchyma and were found less frequently in the centrilobular area. FVIIIRAg immune deposits appeared patchy and discontinuous along the sinusoidal lining, likely representing focalized transformation of sinusoidal to vascular endothelium. There was a discrete localization of FVIIIRAg immunoreactivity in the foci of severe parenchymal fibrosis. Conclusion. FVIIIRAg is a reliable marker for detecting the transformation of sinusoidal to vascular endothelium in advanced liver fibrosis in elderly cadavers.

Deactivation of implantable cardioverter defibrillators in terminal illness and end of life care.

Cardiology professional societies have recommended that patients with cardiovascular implantable electronic devices complete advance directives (ADs). However, physicians rarely discuss end of life handling of implantable cardioverter defibrillators (ICDs), and standard AD forms do not address the presence of ICDs. We conducted a telephone survey of 278 patients with an ICD from a large, academic hospital. The average period since implantation was 5.15 years. More than 1/3 (38%) had been shocked, with a mean of 4.69 shocks. More than 1/2 had executed an AD, but only 3 had included a plan for their ICD. Most subjects (86%) had never considered what to do with their ICD if they had a serious illness and were unlikely to survive. When asked about ICD deactivation in an end of life situation, 42% said it would depend, 28% favored deactivation, and 11% would not deactivate. One quarter (26%) thought ICD deactivation was a form of assisted suicide, 22% thought a do not resuscitate order did not mean that the ICD should be deactivated, and 46% responded that the ICD should not be automatically deactivated in hospice. The answers did not correlate with any demographic factors. Almost all (95%) agreed that patients should have the opportunity to execute an AD that directs handing of an ICD. When asked who should be responsible for discussing this device for an AD, 31% said electrophysiologists, 45% said general cardiologists, and 14% said primary care physicians. In conclusion, the results of the present study highlight the lack of consensus among patients with an ICD on the issue of deactivation at the end of a patient's life. These findings suggest cardiologists should discuss end of life care and device deactivation with their patients with an ICD.