Clinical trials: GI Tract Disorders
Iron-deficiency, Microbial Colonization
Do Iron Supplements Impact the Gut Microbiome of Women of Reproductive Age?
In this randomised controlled trial the investigators will determine whether taking iron supplements compared to placebo for 21 days alters the bacteria (microbiome) in the large intestine of non-pregnant female participants.
- Conditions
- Iron-deficiency, Microbial Colonization, Anemia
- Trial name
- NCT05033483
- Testing
- Ferrous Fumarate
- Where
- Australia
- Volunteers
- 82 people, healthy volunteers welcome
- Sponsor
- South Australian Health and Medical Research Institute
Irritable Bowel Syndrome
Effect of Menstrual Cycle on Central Nervous System (CNS) Processing of Gut Stimuli in Irritable Bowel Syndrome (IBS) and Control
The hypothesis of the study is that women perceive intestinal stimulation (rectal balloon distention) differently in different phases of the menstrual cycle, i.e there is an effect of hormones on the sensory pathway, and that…
- Trial name
- NCT00219531
- Testing
- perception of rectal balloon distention
- Where
- United States
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Penn State University
Obesity, Maternal, Pregnancy Complications
The Microbiome in (Non-) Obese Pregnancy and Pregnancy Outcomes
This research aims to elucidate an underlying mechanism of maternal obesity induced pregnancy and longterm health complications for mothers and their offspring.
- Conditions
- Obesity, Maternal, Pregnancy Complications, Gut Microbiota
- Trial name
- PROMOTE (NCT05754645)
- Testing
- Blood withdrawal
- Where
- Netherlands
- Volunteers
- 110 people, healthy volunteers welcome
- Sponsor
- Erasmus Medical Center
Roux-en-Y Gastric Bypass, Obesity
Meal Glycaemic Index and Exercise After Gastric Bypass
The study will evaluate postprandial glucose excursions and gut hormone secretion after ingestion of meals with different glycaemic index (GI) values (high vs low) followed by an acute bout of exercise or rest in gastric bypass…
- Trial name
- NCT03478098
- Testing
- Low GI mealtest, Low GI mealtest and subsequent exercise, High GI mealtest
- Where
- Denmark
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Kirstine Nyvold Bojsen-Moeller
Parkinson Disease
The Parkinson's Disease Case-Control Study
The Parkinson's Disease Case-Control Study is a study of healthy volunteers and patients with Parkinson's disease aged 50-75 years living in Hangzhou, China.
- Trial name
- NCT06848192
- Where
- China
- Volunteers
- healthy volunteers welcome
- Sponsor
- Westlake University
Short Gut Syndrome
Successful Fiber Food Introduction in Short Bowel Syndrome
Short bowel syndrome (SBS) is a rare but challenging condition in which patients have insufficient bowel length to meet fluid, electrolyte, and nutrient requirements without parenteral support.
- Trial name
- GREENBEANS (NCT06240065)
- Testing
- Green bean puree
- Where
- 2 sites in United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Intestinal Disorder, Glucose Metabolism Disorders
Grain Fibre and Gut Health
Wholegrain fibre is known to affect on the gut health, but also may cause intestinal discomfort. Thus, many individuals may avoid the consumption of whole grain cereals in spite of their known health benefits, and may in this…
- Conditions
- Intestinal Disorder, Glucose Metabolism Disorders, Inflammation
- Trial name
- FIBREFECTS (NCT03550365)
- Testing
- Rye bran bread intervention, Rye bread intervention, Wheat bread diet
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Eastern Finland
Morbid Obesity
Chronobiological Determinants of Gut Microbiome
The aim of this study is to examine how the number of daily eating occasions and the timing of energy intake influence gut microbiome composition in both morbidly obese and non-obese individuals.
- Trial name
- ChronoNutr (NCT07303036)
- Where
- Turkey (Türkiye)
- Volunteers
- 34 people, healthy volunteers welcome
- Sponsor
- Hacettepe University
Microbial Colonization
Gut Health Enhancement by Eating Favourable Food
Within the GEEF om je buik study the effects of an 8-week intervention with either a diet rich in fiber or fermented food on the gut microbiota will be investigated.
- Trial name
- GEEFomjebuik (NCT05900609)
- Testing
- WholeFiber, Kombucha, Maltodextrin DE19/21
- Where
- Netherlands
- Volunteers
- 146 people, healthy volunteers welcome
- Sponsor
- VU University of Amsterdam
Viral Upper Respiratory Tract Infection, Gastroenteritis
Probiotic Supplementation and Endurance Performance in Cyclists and Masters Runners
The study will evaluate the change in gastrointestinal (GI) flora following probiotic supplementation, and expected to lead to an increase in the intestinal epithelial integrity and to improvement in its health.
- Trial name
- NCT02756221
- Testing
- Probiotics
- Where
- Israel
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Tel Hai College
Healthy, Obesity
The Effect of Bitter Taste Receptor Agonists on The Gastrointestinal Tract, Hunger and Food Intake
In this study, the investigators aimed at evaluating the role of bitter taste receptors in the gastrointestinal tract (GIT). Intragastric or intraduodenal administration of denatonium benzoate (DB) or quinine hydrochloride were…
- Trial name
- NCT02759926
- Testing
- Denatonium benzoate, Quinine hydrochloride, Tap water
- Volunteers
- 98 people, healthy volunteers welcome
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Liver Cirrhoses, Chronic Pancreatitis
Malnutrition in Chronic Gastrointestinal Diseases, Cross-sectional Study
Malnutrition and muscle wasting are common consequences of life-threatening, chronic diseases of the gastrointestinal tract. Such diseases include liver cirrhosis, chronic pancreatitis and short bowel syndrome.
- Conditions
- Liver Cirrhoses, Chronic Pancreatitis, Short Bowel Syndrome
- Trial name
- NCT04474743
- Testing
- No intervention - cross-sectional observational only
- Where
- 3 sites in Germany
- Volunteers
- 345 people, healthy volunteers welcome
- Sponsor
- University Medicine Greifswald
Obesity, Type 2 Diabetes
Gut Hormones and Roux en Y Gastric Bypass
The purpose of this study is to assess whether the changes in gut hormones seen following Roux en Y Gastric Bypass surgery are responsible for some of the beneficial effects seen post-operatively.
- Trial name
- NCT01945840
- Testing
- Roux en Y Gastric Bypass Surgery, Gut hormone infusion, Very low calorie diet
- Where
- United Kingdom
- Volunteers
- 190 people, healthy volunteers welcome
- Sponsor
- Imperial College London
Coronavirus Infections, Gut Microbiome
The Association of Gut Microbiota With COVID 19 Infection in Children
Although COVID-19 infects gastrointestinal tissues, little is known about the roles of gut commensal microbes in susceptibility to and severity of infection.
- Conditions
- Coronavirus Infections, Gut Microbiome, Childhood ALL
- Trial name
- NCT05303155
- Testing
- 16S rRNA sequencing
- Where
- South Korea
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Hallym University Kangnam Sacred Heart Hospital
Obesity
Inter-relationships Among Glucose, Brain, Gut Microbiota and MicroRNAs (IRONmiRNA).
The brain is a recognized target of iron deposition. This process is enhanced by the presence of obesity and hyperglycemia and impacts cognitive functions.
- Trial name
- IRONmiRNA (NCT05345106)
- Testing
- Bariatric Surgery
- Where
- Spain
- Volunteers
- 138 people, healthy volunteers welcome
- Sponsor
- Institut d'Investigació Biomèdica de Girona Dr. Josep Trueta
Healthy, Cognitive Function 1, Social
Active Gains in Brain Using Exercise During Aging
AGUEDA (Active Gains in brain using Exercise During Aging) is a randomized controlled trial designed to examine the effects of a 24-week resistance exercise program on brain health in cognitively normal adults between 65-80 years…
- Trial name
- AGUEDA (NCT05186090)
- Testing
- 24-week resistance exercise program
- Where
- Spain
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Universidad de Granada
Immune Response, Upper Respiratory Tract Infection
Walnut and Immunity Study
The main objective of the study is to determine if eating walnuts enhances immune function, in older free-living men and postmenopausal women with overweight.
- Trial name
- walnutimmune (NCT05915390)
- Testing
- walnuts, Habitual diet
- Where
- United States
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- Loma Linda University
Gut Microbiota, Metabolic Syndrome
Effect of Raspberry on Gut Microbiota and Metabolic Syndrome
There is growing evidence that nutritional intervention with dietary polyphenols can positively modulate the gut microbiota to improve cardiometabolic health.
- Trial name
- NCT03620617
- Testing
- Raspberry supplement
- Where
- Canada
- Volunteers
- 59 people, healthy volunteers welcome
- Sponsor
- Laval University
Diabetes Mellitus, Gut Microbiota
Correlation Between Gut Microbiota and Pancreatic Β-Cell Function in Diabetic Patients
The gut microbiota plays a crucial role in digestion, metabolism, nutrition, and immune regulation in the human body. In recent years, numerous studies have indicated that the gut microbiota and its metabolites are closely…
- Trial name
- NCT06645223
- Testing
- No Interventions
- Where
- China
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- Peking University Third Hospital
Intrahepatic Cholestasis of Pregnancy, Gestational Diabetes Mellitus
The Metabolic Profile in Intrahepatic Cholestasis of Pregnancy and Diabetes Mellitus
ICP is known to cause abnormal bile acid homeostasis and to be associated with an increased risk of diseases of the biliary system in later life. There have been small studies (Dann et al. 2006; Wójcicka-Jagodzińska et al.
- Trial name
- NCT01499524
- Where
- 2 sites in United Kingdom
- Volunteers
- 116 people, healthy volunteers welcome
- Sponsor
- Imperial College London