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82 active trials for Irritable Bowel Syndrome

Nutrition to Relieve IBS Symptoms by Targeting the Microbiota

Rationale: Irritable Bowel Syndrome (IBS) is functional gastrointestinal disorder that affects a large number of people. To date, no adequate treatment is available. This is partially due to the heterogeneity of the patients and the complicated pathology in which not all mechanisms are understood. Based on results of in vitro screening within the IBSQUtrition project, we selected promising dietary supplements for validation of their potential beneficial effects on the microbiota of IBS patients. Objective: The primary objective is to determine the bifidogenic effects of a 4-week intervention with one of four dietary supplements (Chondroitin sulfate, NOVELOSE® 3490, and Pea Fiber, and Lactium®) in IBS patients. The secondary objective is to determine the effects of the same intervention on fecal microbiota composition and SCFA concentration, IBS-related complaints, Quality of Life, and stool frequency and consistency in IBS patients. Study design: a double-blind, randomized, placebo-controlled trial with five parallel arms. Study population: 70 adult (18-65 yrs) IBS patients Intervention: 4-week intervention period with five parallel arms: 1) Chondroitin sulfate, 2) NOVELOSE® 3490, 3) Pea Fiber, 4) Lactium®, and 5) Placebo supplement (Maltodextrin control), during which the study participants consume the respective supplement twice per day. Main study parameters/endpoints: The main study parameter is the (relative) abundance of fecal Bifidobacterium. The secondary study parameters are fecal microbiota composition and Short-Chain Fatty Acids (SCFAs) concentration, stool frequency and consistency, IBS-related complaints, and Quality of Life (QoL). Nature and extent of the burden and risks associated with participation, benefit and group relatedness: Study participants have to invest about 7.4 hours of their time in this study mainly to complete several questionnaires (short daily questionnaire, longer questionnaires at two occasions), which is conveniently all possible from home. On two occasions they have to collect stool (transported via courier to the research facility). They have to comply to consume a commercially available supplement twice daily for four weeks. There are limited risks for the study participants.

Start: May 2021
Meditation and Yoga for Irritable Bowel Syndrome

Study Aim: This study will explore the feasibility and effectiveness of a yoga program for patients with IBS. Methods: A superiority RCT with 30 participants per group. Adult patients with IBS fluent in English who do not have major physical impairments or cognitive, psychological, or psychiatric disorder will be recruited and randomly using the REDCap randomization module to either a yoga intervention delivered (a) a yoga intervention delivered online led by a yoga facilitator or (b) a advice only control group. The 8-week Hatha Yoga intervention consists of Yoga Namaskar, Nadi Shuddhi (alternate nostril breathing), mantra chanting, and breath watching. Group 1: Yoga program. Participants will be asked to practice the yoga program daily at home and will be given access to the yoga videos hosted on the University of Calgary study website, as well as written program instructions, and frequently answered questions. A brief description of the video content will be provided to inform the participant of its content and length. Additional website content will include study information, study schedule, and contact information, as well as a pre-recorded educational session. In addition to the daily program describe above, the facilitator-led intervention will be delivered online by a certified yoga facilitator using the Microsoft Teams platform. Participants in group of 3 to 5 will be collated to enhance effectiveness of the study processes. Our team has experience with this approach, as this strategy is currently used with previous yoga study. Yoga classes will be held once per week for 8 weeks, with the first session lasting approximately 1.5 hours and subsequent sessions up to 60 minutes. The total allocated time for the introductory session will include the class set-up, introductions, educational material (please see below), overview of practices, teaching of practices, practice corrections/enhancements, modifications, and practice expectations. Each follow-up class will include review from the previous week, questions and answers, individual corrections and/or modifications. For individual corrections, the yoga facilitator will ask the participant to do the practices and receive corrections, if needed. Group 2. Advice-only control group. This group will receive general education on IBS, the mind and gut connection, and the role of mind-body therapies in the management of IBS. Effectiveness outcomes will be assessed at baseline and 8 weeks. The primary effectiveness outcome will be the severity of IBS symptoms, and secondary effectiveness outcomes include microbiome analysis, quality of life, anxiety and depression symptoms, perceived stress, fatigue, and severity of somatic symptoms. Microbiome composition will be measured using shotgun metagenomic sequencing. Microbiome sequences will be analyzed for alpha diversity, beta diversity, species composition, functional composition and biomarker discovery. To determine the feasibility of each intervention, recruitment and attrition rates, adherence, program preferences and satisfaction, and adverse event outcomes will be evaluated.

Start: March 2021
Establishment of the Human Intestinal and Salivary Microbiota Biobank - Gastrointestinal Diseases

This is a prospective, clinical, multicentre study aimed to collect biological samples and study microbiota from subjects with Clostridium Difficile (CDI), subjects affected by Multi Drug Resistant Organisms (MDRO) infection, subjects with Chronic Inflammatory Bowel Disease (IBD), subjects with Irritable Bowel Syndrome (IBS), subjects with Hepatic Encephalopathy and from healthy volunteers. Microbiota is a complex consortium of microorganisms, located at the mucosal level (in particular intestinal, oral and vaginal) having a key role in human health and in the onset of several diseases. Microbiota alterations have been found in several diseases (gastrointestinal, metabolic, renal, oncological, gynaecological) The study will allow to: Provide biological samples (faeces, saliva, blood, urine) from healthy volunteers and patients to the first Italian microbiota biobank; Study microorganisms using different in vitro and in vivo techniques; Study the link between the microbiota and the disease. This study is part of the BIOMIS project (Project Code: ARS01_01220), presented as part of the "Avviso per la presentazione di progetti di ricerca industriale e sviluppo sperimentale nelle 12 aree di specializzazione individuate dal PNR 2015-2020" and admitted to funding under the National Operational Program "Ricerca e Innovazione" 2014-2020 by directorial decree of MIUR - Department for Higher Education and Research - n. 2298 of 12 September 2018. BIOMIS includes several clinical studies that enrol patients with different pathologies to collect and store biological samples and study microbiota.

Start: February 2021
Nutrition to Relieve IBS Constipation

Rationale: Irritable Bowel Syndrome (IBS) is a disease that affects a large number of people. To date, no adequate treatment is available. This is partially due to the heterogeneity of the patients and the complicated pathology in which not all mechanisms are understood. Based on results of in vitro screening within the IBSQUtrition project, we selected promising dietary supplements for validation of their potential beneficial effects on stool pattern in IBS-Constipation (IBS-C) patients. Objective: The primary objective is to determine the effects of a 4-week intervention with either a prebiotic supplement (Inavea pure acacia) or a probiotic supplement (Bifidobacterium lactis BLa80) on stool pattern (including stool frequency, consistency, and volume) in IBS-C patients. The secondary objective is to determine the effects if this intervention on GI complaints and quality of life in IBS-C patients. Study design: A double-blind, randomized, placebo-controlled trial will be conducted with three parallel intervention arms Study population: 180 adult (18-70 yrs) IBS patients with a constipation-predominant subtype Intervention: A 4 week run-in period will be followed by a 4-week intervention period with three parallel arms: 1) prebiotic supplement (Inavea pure acacia), 2) probiotic supplement (B. lactis), and 3) Placebo supplement (Maltodextrin control), during which the study participants consume the respective supplement twice per day. Main study parameters/endpoints: The primary study parameter is stool pattern: stool frequency, stool consistency; and stool volume. The secondary study parameters are gastrointestinal complaints, Quality of Life, and HADS. Nature and extent of the burden and risks associated with participation, benefit and group relatedness: Study participants have to invest about 14.5 hours of their time in this study mainly to complete several questionnaires (short daily questionnaire, longer questionnaires at three occasions), which is conveniently all possible from home. They have to comply to consume a supplement twice daily for four weeks. At two time points they have to collect their stool for five consecutive days. There are limited risks for the study participants.

Start: March 2021
The Effects of Prucalopride in Patients With Constipation Predominant Irritable Bowel Syndrome

Irritable bowel syndrome (IBS) is very common functional gastrointestinal disorder in daily gastrointestinal practice. Its etiology is multifactorial and incompletely understood. Different types of treatment have been trying but no single drug is effective for every patients. After the discovery of 5HT4(5 hydroxytryptamine-4) receptor and its effect on gastrointestinal motility, 5HT4 receptor agonist becoming a good therapeutic tool in different functional gastrointestinal disorder. Prucalopride is a selective 5HT4 agonist and it has proven benefit in chronic idiopathic constipation but there is not enough evidence that it is effective in constipation predominant IBS. Objective: To assess the efficacy of Prucalopride in constipation predominant IBS patients. Material & method: Consecutive patients of both sexes, age more than 18 years attended the outpatient department of Gastroenterology meeting the inclusion Criteria of IBS-C will be initially enrolled for the study. Their clinical history, examination & initial investigations report will be noted on the standard data sheet. Any alternative diagnosis if proven by clinical examination or laboratory investigation will be excluded from the study. Randomization into two groups (Prucalopride and placebo) will be performed by lottery. Patients will be randomly assigned to receive either Prucalopride 2 mg or placebo for 6 weeks. IBS symptoms will be assessed by IBS-SSS (symptom severity score) and IBS-QOL(quality of life) at the baseline, 2nd week and 6th week of treatment (end of treatment). Any adverse effect due to drugs will also be monitored by base line ECG, calculation of corrected QT interval and ECG monitoring (2 weeks and 6 weeks) during the course of treatment. Data analysis By SPSS. IBS-SSS and IBS-QOL instrument scores will be expressed as mean ± standard deviation. Statistical analysis will be done by paired and unpaired 't' test. P value <0.05 will be considered statistically significant. Ethical Consideration: Every ethical issue will be discussed with the patient regarding the study and informed written consent will be obtained. There will be no chance of disclosure of information that will have been harmful to the patients or others. Permission have been taken from the concerned departmental ethical committee as well as ethical review committee of BSMMU in order to carry out the study.

Start: March 2021