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Magnus Simren

Elin Lagerlöf, Lars Agreus, Magnus Simrén, Hans Törnblom
No abstract text is available yet for this article.
March 7, 2018: Läkartidningen
Cecilia Grinsvall, Hans Törnblom, Jan Tack, Lukas Van Oudenhove, Magnus Simrén
Background and objective: Psychological states may interfere with visceral sensitivity. Here we investigate associations between psychosocial factors and visceral sensitivity in irritable bowel syndrome (IBS). Methods: Two IBS patient cohorts (Cohort 1: n  = 231, Rome II; Cohort 2: n  = 141, Rome III) underwent rectal barostat testing, and completed questionnaires for anxiety, depression, somatization, and abuse. The associations between questionnaire measures and visceral sensitivity parameters were analyzed in three-step general linear models (step1: demographic and abuse variables; step 2: anxiety and depression; step 3: somatization)...
March 2018: United European Gastroenterology Journal
Egbert Clevers, William E Whitehead, Olafur S Palsson, Ami D Sperber, Hans Törnblom, Lukas Van Oudenhove, Jan Tack, Magnus Simrén
BACKGROUND AND AIMS: The Rome IV criteria define functional gastrointestinal (GI) disorders by specific combinations of symptoms. It is possible to empirically evaluate these symptom combinations by factor analysis (a statistical procedure that groups variables that correlate). However, this analysis has not been performed for the Rome IV criteria, and factor analyses based on the previous versions of the Rome criteria did not use population-based data. We therefore investigated symptom grouping by the Rome IV questionnaire using factor analysis of a population-based sample...
March 3, 2018: Clinical Gastroenterology and Hepatology
Egbert Clevers, Jan Tack, Hans Törnblom, Gisela Ringström, Koen Luyckx, Magnus Simrén, Lukas Van Oudenhove
BACKGROUND & AIMS: There are few data from longitudinal studies of the gastrointestinal and psychologic features of irritable bowel syndrome (IBS). We studied within-person correlations among features of IBS, along with progression of gastrointestinal (GI) symptoms and quality of life, and factors associated with changes over time. METHODS: We performed a longitudinal study of 276 patients with IBS in Sweden (70% female; ages, 19-76 years) who completed questionnaires, each year for 5 years, about their GI symptom severity, quality of life, GI-specific anxiety, general anxiety, depression, and coping resources...
March 3, 2018: Clinical Gastroenterology and Hepatology
Börje Jonefjäll, Magnus Simrén, Anders Lasson, Lena Öhman, Hans Strid
Background: Patients with ulcerative colitis often report fatigue. Objectives: To investigate prevalence of and risk factors for fatigue in patients with ulcerative colitis with active disease and during deep remission. Methods: In this cross-sectional study, disease activity was evaluated with endoscopy and calprotectin, and patients were classified as having active disease ( n = 133) or being in deep remission ( n = 155). Blood samples were analysed to assess anaemia, iron deficiency and systemic immune activity...
February 2018: United European Gastroenterology Journal
Koldo Garcia-Etxebarria, Tenghao Zheng, Ferdinando Bonfiglio, Luis Bujanda, Aldona Dlugosz, Greger Lindberg, Peter T Schmidt, Pontus Karling, Bodil Ohlsson, Magnus Simren, Susanna Walter, Gerardo Nardone, Rosario Cuomo, Paolo Usai-Satta, Francesca Galeazzi, Matteo Neri, Piero Portincasa, Massimo Bellini, Giovanni Barbara, Daisy Jonkers, Shanti Eswaran, William D Chey, Purna Kashyap, Lin Chang, Emeran A Mayer, Mira M Wouters, Guy Boeckxstaens, Michael Camilleri, Andre Franke, Mauro D'Amato
No abstract text is available yet for this article.
February 2, 2018: Clinical Gastroenterology and Hepatology
Imran Aziz, Olafur S Palsson, Hans Törnblom, Ami D Sperber, William E Whitehead, Magnus Simrén
BACKGROUND: The population prevalence, clinical characteristics, and associations for Rome IV functional dyspepsia are not known. Following the publication of the Rome IV criteria for functional gastrointestinal disorders, we aimed to assess the prevalence, characteristics, and associations for symptom-based Rome IV functional dyspepsia in adults across the USA, Canada, and the UK. METHODS: We sent an internet-based cross-sectional health survey to adults in the general population of three English-speaking countries: the USA, Canada, and the UK...
January 29, 2018: Lancet. Gastroenterology & Hepatology
Michael Camilleri, Alexander C Ford, Gary M Mawe, Phil G Dinning, Satish S Rao, William D Chey, Magnus Simrén, Anthony Lembo, Tonia M Young-Fadok, Lin Chang
Chronic constipation is a prevalent condition that severely impacts the quality of life of those affected. Several types of primary chronic constipation, which show substantial overlap, have been described, including normal-transit constipation, rectal evacuation disorders and slow-transit constipation. Diagnosis of primary chronic constipation involves a multistep process initiated by the exclusion of 'alarm' features (for example, unintentional weight loss or rectal bleeding) that might indicate organic diseases (such as polyps or tumours) and a therapeutic trial with first-line treatments such as dietary changes, lifestyle modifications and over-the-counter laxatives...
December 14, 2017: Nature Reviews. Disease Primers
Jonas Varkey, Per-Ove Stotzer, Magnus Simrén, Gustaf Herlenius, Mihai Oltean
OBJECTIVE: Microscopic examination of endoscopic biopsies forms the basis of acute cellular rejection (ACR) monitoring after intestinal transplantation (ITx). The endoscopy findings during acute rejection (AR) are known but a grading system for its severity is lacking. We designed and implemented a five-stage grading score based on acknowledged endoscopic features of AR, to allow a faster preliminary diagnosis of AR and intra- and interpatient comparisons. METHODS: Two investigators reviewed and graded the endoscopy reports after 28 ITx using a novel score and correlated the results with pathology findings...
February 2018: Scandinavian Journal of Gastroenterology
Åsa Lundgren-Nilsson, Alan Tennant, Sofie Jakobsson, Magnus Simrén, Charles Taft, Anna Dencker
PURPOSE: Fatigue is a symptom in patients with chronic gastrointestinal (GI) and liver diseases. Different instruments have been developed to assess the severity of fatigue and the 40-item Fatigue Impact Scale (FIS) is among the most widely used. Shorter versions of FIS include the 21-item Modified Fatigue Impact Scale (MFIS), and an eight-item version for everyday use. The study aimed to assess construct validity, reliability, and sufficiency of the raw score of the original FIS with 40 items, and examine the sufficiency of the 21 items from the Modified scale and the eight items of the Daily Fatigue Impact Scale (D-FIS), all of which are embedded in the 40-item scale...
December 12, 2017: Disability and Rehabilitation
William Paterson, Michael Camilleri, Magnus Simren, Guy Boeckxstaens, Stephen J Vanner
No abstract text is available yet for this article.
December 2017: American Journal of Gastroenterology
Imran Aziz, Olafur S Palsson, Hans Törnblom, Ami D Sperber, William E Whitehead, Magnus Simrén
OBJECTIVES: The population prevalence of Rome IV-diagnosed functional gastrointestinal disorders (FGIDs) and their cumulative effect on health impairment is unknown. METHODS: An internet-based cross-sectional health survey was completed by 5,931 of 6,300 general population adults from three English-speaking countries (2100 each from USA, Canada, and UK). Quota-based sampling was used to generate demographically balanced and population representative samples with regards to age, sex, and education level...
January 2018: American Journal of Gastroenterology
Carolin Wohlfarth, Stefanie Schmitteckert, Janina D Härtle, Lesley A Houghton, Harsh Dweep, Marina Fortea, Ghazaleh Assadi, Alexander Braun, Tanja Mederer, Sarina Pöhner, Philip P Becker, Christine Fischer, Martin Granzow, Hubert Mönnikes, Emeran A Mayer, Gregory Sayuk, Guy Boeckxstaens, Mira M Wouters, Magnus Simrén, Greger Lindberg, Bodil Ohlsson, Peter Thelin Schmidt, Aldona Dlugosz, Lars Agreus, Anna Andreasson, Mauro D'Amato, Barbara Burwinkel, Justo Lorenzo Bermejo, Ralph Röth, Felix Lasitschka, Maria Vicario, Marco Metzger, Javier Santos, Gudrun A Rappold, Cristina Martinez, Beate Niesler
Irritable bowel syndrome (IBS) is a gut-brain disorder involving alterations in intestinal sensitivity and motility. Serotonin 5-HT4 receptors are promising candidates in IBS pathophysiology since they regulate gut motor function and stool consistency, and targeted 5-HT4R selective drug intervention has been proven beneficial in subgroups of patients. We identified a single nucleotide polymorphism (SNP) (rs201253747) c.*61 T > C within the 5-HT4 receptor gene HTR4 to be predominantly present in diarrhoea-IBS patients (IBS-D)...
October 31, 2017: Scientific Reports
Jan Tack, Maura Corsetti, Michael Camilleri, Eamonn Mm Quigley, Magnus Simren, Hidekazu Suzuki, Nicholas J Talley, Hans Tornblom, Lukas Van Oudenhove
BACKGROUND AND AIMS: The functional gastrointestinal disorders (FGIDs) are extremely common conditions associated with a considerable personal, social and health economic burden. Managing FGIDs in clinical practice is challenging because of the uncertainty of symptom-based diagnosis, the high frequency of overlap between these conditions and the limited efficacy of available therapies. It has often been argued that successful drug development and management of FGIDs requires knowledge of the underlying pathophysiology...
August 16, 2017: Gut
Maria K Magnusson, Hans Strid, Stefan Isaksson, Magnus Simrén, Lena Öhman
BACKGROUND: The clinical disease course of ulcerative colitis (UC) varies substantially between individuals and can currently not be reliably predicted. The gut microbiota and the host's immune defense are key players for gut homeostasis and may be linked to disease outcome. The aim of this study was to determine fecal microbiota composition and mucosal antibacterial response profile in untreated patients with newly diagnosed UC and the impact of these factors on disease course. METHODS: Stool samples and intestinal biopsies were obtained from therapy-naive newly diagnosed patients with UC...
April 25, 2017: Inflammatory Bowel Diseases
Johanna Sundin, Lena Öhman, Magnus Simren
OBJECTIVE: During the last decade experimental and observational studies have shown that patients with Inflammatory Bowel Disease (IBD) and Irritable Bowel Syndrome (IBS) may have an altered intestinal microbial composition compared to healthy subjects. However, no uniform microbial signature has as yet been detected for either IBD or IBS. This review summarizes the current knowledge of microbial dysbiosis, and its potential relationship to the pathophysiology in IBD and IBS. METHODS: A selective review was conducted to summarize the current knowledge of gut microbiota in the pathophysiology of IBD and IBS...
April 18, 2017: Psychosomatic Medicine
Sean M P Bennet, Lena Böhn, Stine Störsrud, Therese Liljebo, Lena Collin, Perjohan Lindfors, Hans Törnblom, Lena Öhman, Magnus Simrén
OBJECTIVE: The effects of dietary interventions on gut bacteria are ambiguous. Following a previous intervention study, we aimed to determine how differing diets impact gut bacteria and if bacterial profiles predict intervention response. DESIGN: Sixty-seven patients with IBS were randomised to traditional IBS (n=34) or low fermentable oligosaccharides, disaccharides, monosaccharides and polyols (FODMAPs) (n=33) diets for 4 weeks. Food intake was recorded for 4 days during screening and intervention...
April 17, 2017: Gut
Magnus Simrén, Hans Törnblom, Olafur S Palsson, William E Whitehead
Irritable bowel syndrome (IBS) is one of the most common functional gastrointestinal disorders. A stepwise management approach is advocated for patients with IBS. For a substantial proportion of patients with mild symptoms, general management principles, including making a confident diagnosis and offering explanation, reassurance, and dietary and lifestyle advice, are sufficient. However, many patients continue to have moderate-to-severe symptoms and are not satisfied solely with this approach. In these patients, use of pharmacotherapy on the basis of the predominant symptom (constipation, diarrhoea, pain, or bloating) or combination of symptoms is the next step...
February 2017: Lancet. Gastroenterology & Hepatology
Magnus Simren, Olafur S Palsson, William E Whitehead
PURPOSE OF REVIEW: The purpose of the review was to provide an update of the Rome IV criteria for colorectal disorders with implications for clinical practice. RECENT FINDINGS: The Rome diagnostic criteria are expert consensus criteria for diagnosing functional gastrointestinal disorders (FGIDs). The current version, Rome IV, was released in May of 2016 after Rome III had been in effect for a decade. It is the collective product of committees that included more than 100 leading functional GI experts...
April 2017: Current Gastroenterology Reports
Gianluca Ianiro, Magnus Simren
No abstract text is available yet for this article.
March 2017: United European Gastroenterology Journal
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