Impact of Bariatric Surgery on the Gut Environment
Palabras clave
Abstracto
Descripción
To quantify protein assimilation after bariatric surgery, we will perform in bariatric surgery patients (Roux-en- Y gastric bypass and Sleeve Gastrectomy) and in a control group a cross-sectional study with a single test day. On the test day, the study participants will consume a test meal that contains intrinsically labelled egg proteins and will take a capsule with 14C-glycocholic acid and a capsule with 3H-labelled polyethylene glycol. Participants will record a food diary 72h before and after the test day and during the test they will collect breath samples for 6h. Urine and stool will be collected respectively up to 24h and 72h after consumption of the test meal.
For the 1-year follow up study, the three patient groups (Roux-en-Y gastric bypass, Sleeve gastrectomy and control group with traditional weight loss therapy) will have 5 visits, a baseline visit and 4 visits after surgery or after starting traditional therapy. The time points after baseline include 2 weeks, 3 months, 6 months and 12 months. Each visit, a blood and stool sample will be collected, a 7-day food and stool diary will be registered and also weight loss will be recorded.
fechas
Verificado por última vez: | 03/31/2020 |
Primero enviado: | 04/09/2020 |
Inscripción estimada enviada: | 04/09/2020 |
Publicado por primera vez: | 04/13/2020 |
Última actualización enviada: | 04/09/2020 |
Última actualización publicada: | 04/13/2020 |
Fecha de inicio real del estudio: | 03/22/2017 |
Fecha estimada de finalización primaria: | 05/31/2021 |
Fecha estimada de finalización del estudio: | 08/31/2021 |
Condición o enfermedad
Fase
Grupos de brazos
Brazo | Intervención / tratamiento |
---|---|
Roux-en-Y gastric bypass Patients who were planned for surgery with Roux-en-Y gastric bypass and were operated | |
Sleeve Gastrectomy Patients who were planned for surgery with Sleeve Gastrectomy and were operated | |
Control group Obese patients involved in a weight loss program that focuses on diet and lifestyle changes |
Criterio de elegibilidad
Edades elegibles para estudiar | 18 Years A 18 Years |
Sexos elegibles para estudiar | All |
Método de muestreo | Probability Sample |
Acepta voluntarios saludables | No |
Criterios | Inclusion Criteria: - Surgery patients (toxicity and protein assimilation) : BMI > 40 kg/m² or > 35 kg/m² if combined with either obstructive sleep apnoea syndrome, high blood pressure not controllable with 3 different medications or type II diabetes, (3) exclusion of other underlying causes of obesity by an endocrinologist, (4) having tried to lose weight on a non-surgical way for at least 1 year without result and (5) a positive advice from a multidisciplinary team consisting of a surgeon, endocrinologist, psychologist and dietitian. - Obese control group in weight loss program (toxicity) : obese but otherwise healthy patients on a weight loss diet (BMI > 30 kg/m²) in the context of the weight-loss program organised at the Obesity Clinic of University Hospital Leuven. - Control group (protein assimilation) : normal weight (BMI 25-30 kg/m²) or overweight (BMI 25-30 kg/m²). Exclusion Criteria: - Intake of antibiotics 1 months before the start of the study. Pre-and probiotics, laxatives and anti-diarrhea drugs 2 weeks before the start of the study. - Surgery patients and control group (toxicity) : Gastrointestinal disease or major abdominal surgery in the past (except from appendectomy and cholecystectomy). - Surgery patients and control group (protein assimilation) : Lung, liver, kidney and gastrointestinal disease or major abdominal surgery in the past (except from appendectomy, cholecystectomy and bariatric surgery). Vegan, vegetarian, lactose-or gluten-free diet. Pregnant or lactating women and subjects who participated in the last year in a study with irradiation exposure. |
Salir
Medidas de resultado primarias
1. Change from baseline in toxicity of faecal water up to 1 year after bariatric surgery [Baseline and 2 weeks, 3 months, 6 months and 1 year after surgery]
2. Degree of protein assimilation 6-24 months after bariatric surgery [6-24 months after surgery]
Medidas de resultado secundarias
1. Degree of fat malabsorption 6-24 months after bariatric surgery [6-24 months after surgery]