Publications by authors named "Karen Boland"

Background: A significant proportion of inflammatory bowel disease (IBD) patients fail to respond to advanced therapies. Combining advanced therapies may improve treatment outcome. This study aimed to assess the effectiveness, adverse events, and costs associated with combining advanced therapies in IBD patients.

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Purpose: Given the substantial risk of treatment failure in inflammatory bowel disease (IBD), adjuvant therapies may play a role in disease management. We aim to carry out a systematic review to examine the effects of structured exercise on the inflammatory response in patients with IBD. Our secondary aim is to examine the effect of structured exercise programmes on body composition given both an increase in visceral obesity and the presence of sarcopenia have deleterious effects on outcomes in IBD.

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Background: Ustekinumab (UST), a human monoclonal antibody that binds the p40 subunit of interleukin 12 (IL-12) and IL-23, is licensed for induction and maintenance therapy of moderate to severe inflammatory bowel disease (IBD). To date, there is limited data published on any potential association between ustekinumab serum trough levels and mucosal healing in order to guide treatment strategies and appropriate dosing.

Aim: This study aims to identify a relationship between maintenance ustekinumab serum trough levels and mucosal healing and/or response in patients with Crohn's disease in an observational cohort study.

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Introduction: Clinical Nutrition is finding its place within medical training. In response to IrSPEN's objectives and ESPEN's manifesto, IrSPEN distributed an electronic survey investigating attitudes to Clinical Nutrition and unmet educational needs.

Methods: A 35-part questionnaire was designed and distributed to clinicians in Ireland.

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Exercise-induced changes of the microbiome in inflammatory bowel diseases (IBD) is a promising field of research with the potential for personalized exercise regimes as a promising therapeutic adjunct for restoring gut dysbiosis and additionally for regulating immunometabolic pathways in the management of IBD patients. Structured exercise programmes in IBD patients of at least of 12 wk duration are more likely to result in disease-altering changes in the gut microbiome and to harness potential anti-inflammatory effects through these changes along with immunometabolic pathways.

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Article Synopsis
  • Many Crohn's disease patients on anti-TNF therapies face loss of response and often need higher doses of adalimumab to maintain efficacy.
  • This study found that patients on high-dose adalimumab (40 mg weekly or 80 mg every other week) experienced significantly longer times to treatment failure and lower failure rates compared to those on standard doses (40 mg every other week).
  • Both groups had no significant differences in adverse events, indicating that higher dosages improve effectiveness without increasing safety concerns.
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Background: Rates of obesity are increasing worldwide, as is the incidence of inflammatory bowel disease (IBD). Obesity is now considered an inflammatory state. Visceral adiposity in particular may be associated with a more severe inflammatory phenotype in IBD.

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Article Synopsis
  • The study explored how the levels of ustekinumab, a medication used for Crohn's disease, correlate with clinical and biochemical outcomes in patients.
  • After administering the drug, levels were measured at week 2 and week 6, and various metrics like disease activity index, albumin, CRP, and fecal calprotectin were evaluated.
  • Results indicated that higher ustekinumab levels at week 6 were linked to better disease markers and lower chances of needing increased dosing within a year.
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Purpose: Secondary loss of response (LOR) to infliximab (IFX) commonly occurs. One cause is the development of anti-drug antibodies (ADAs). Evidence regarding the optimal management of ADAs is lacking.

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Background & Aims: Iron reduction by venesection has been the cornerstone of treatment for haemochromatosis for decades, and its reported health benefits are many. Repeated phlebotomy can lead to a compensatory increase in intestinal iron absorption, reducing intestinal iron availability. Given that most gut bacteria are highly dependent on iron for survival, we postulated that, by reducing gut iron levels, venesection could alter the gut microbiota.

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Background & Aims: In patients with inflammatory bowel diseases (IBDs), symptoms do not always associate with the severity of endoscopic inflammation and can persist after mucosal healing. We investigated whether symptoms in patients with successfully treated IBD are related to the composition of the intestinal microbiome.

Methods: We analyzed 590 tissue biopsy specimens from 215 patients with IBD and 48 healthy individuals (controls).

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Introduction: Golimumab is approved as a therapy for ulcerative colitis (UC) patients. Recent data also demonstrate efficacy in Crohn's disease (CD); however, little is known about target drug levels to achieve endoscopic remission.

Methods: We performed a retrospective analysis of IBD patients on maintenance golimumab.

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Introduction: Pouchitis is a common complication after ileal pouch-anal anastomosis (IPAA). However, there is a poor correlation between symptoms and endoscopic appearance of the pouch, and many patients can have debilitating symptoms in the absence of overt inflammation. It is unknown whether these clinical symptoms are independently associated with the microbiota.

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Background: 3 classes of biologics are now available for the treatment of Crohn's disease. The availability of multiple treatment options has led to questions regarding the appropriateness of each agent for a given patient. We aimed to evaluate physician preferences for the use of specific biologic agents in a variety of Crohn's disease management scenarios using the RAND/UCLA Appropriateness Methodology.

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Background And Aims: Golimumab is approved for the treatment of moderate-to-severely active ulcerative colitis. However, there have been no formal trials to assess its utility in Crohn's disease [CD]. Our aim was to determine the efficacy and safety of golimumab in patients with anti-tumour necrosis factor [TNF] refractory CD.

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Microscopic colitis (MC) is a chronic inflammatory bowel disease characterized by chronic watery diarrhea and diagnosed with the histologic hallmarks of disease despite a macroscopically normal large bowel. Although 2 distinct disease phenotypes exist, their clinical presentations and epidemiologic characteristics have overlapping features. This article summarizes evidence regarding the pathogenesis of MC, mechanisms of diarrhea in this cohort, and associations with medications.

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Background And Aims: The prevalence and incidence of inflammatory bowel disease (IBD) in North America is among the highest in the world and imparts substantial direct and indirect medical costs. The Choosing Wisely Campaign was launched in wide variety of medical specialties and disciplines to reduce unnecessary or harmful tests or treatment interventions.

Methods: The Choosing Wisely list for IBD was developed by the Canadian IBD Network for Research and Growth in Quality Improvement (CINERGI) in collaboration with Crohn's and Colitis Canada (CCC) and the Canadian Association of Gastroenterology (CAG).

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Deregulation of the ubiquitin-proteasome pathway has been frequently observed in a number of malignancies. Using quantitative Western blotting of normal and matched tumour tissue, we here identified a significant increase in the 19S proteasome subunit Rpt4 in response to chemoradiation in locally advanced rectal cancer patients with unfavourable outcome. We therefore explored the potential of Rpt4 reduction as a therapeutic strategy in colorectal cancer (CRC).

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