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Micro-nutritional Status and Gut Microbiota in Morbidly Obese Patients Before and After Gastric Bypass With and Without Micro-nutritional Supplementation (NCT03029572)

An intervention study design in 90 obese patients will be used. Nutritional, metabolic and psychological status as well as gut microbiota will be evaluated before gastric bypass and 6 months post surgery. During this period of 6 months, all patients will receive a specific diet according to recommendation with regard to bariatric surgery. Subjects will be than randomized in 2 sub-groups: A. patients receiving a standard healthy diet without micro-nutriments' supplementation; B. patients receiving a healthy diet and probiotics, minerals, aminoacids, omega-3 acids vitamin and mineral supplementation
  • Drug: Diet supplementation
    Micronutriment supplementation therapy
    • Procedure: Bariatric surgery
      Roux-en-Y gastric bypass provided in both arms.
      Ages eligible for Study
      20 Years to 60 Years
      Genders eligible for Study
      All
      Accepts Healthy Volunteers
      No
      Inclusion Criteria:
      • Obesity BMI>40 kg/m2
      Exclusion Criteria:
      • Antidepressant treatment
      The primary aim of the study is to analyse the micro-nutritional status in morbidly obese patients before and 6 months after bariatric surgery (Roux-en-Y gastric bypass, RYGB). The secondary outcome will be the impact of 6 months probiotics, minerals, aminoacids, omega-3 acids and vitamin supplementation on microbiota, metabolic and psychological parameters 12 months post-RYGB.

      An intervention study in 90 obese patients (BMI>40 kg/m2) will be used. Nutritional, metabolic and psychological status as well as gut microbiota will be evaluated before gastric bypass and 6 months post RYGB. During this period of 6 months, all patients will receive a specific diet according to recommendation with regard to RYGB.

      Subjects will be than randomized in 2 sub-groups:

      A. patients receiving a standard healthy diet without micro-nutriments' supplementation; B. patients receiving a healthy diet and probiotics, minerals, aminoacids, omega-3 acids vitamin and mineral supplementation Healthy diet will be defined as follow: 9-15% of proteins, 50-55% of carbohydrates and 30-35% lipids (25% saturated fat, 50% mono-unsaturated fat and 25% poly-unsaturated fat).

      The following parameters will be analysed before RYGB and 6 months and 12 months post RYGB, respectively:

      - Nutritional status with oxidative stress parameters (Vitamins A and E, Selenium, Zinc, Copper, Glutathione peroxidise, Superoxide dismutase and Iron)

      - Metabolic parameters (Total cholesterol, LDL-cholesterol, HDL-cholesterol, Triglycerides, fasting glucose and insulin, CRP)

      - Fatty acids (linoleic acid, alpha-linoleic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA)

      - Gut microbiota

      - Psychological status (anxiety, depression and quality of life as evaluated by validated questionnaires).

      1 locations

      Switzerland (1)
      • University Hospitals of Geneva
        Not specified
        Geneva, Switzerland, 1206
      Status:
      completed
      Type:
      Interventional
      Phase:
      -
      Start:
      31 January, 2009
      Updated:
      18 January, 2017
      Participants:
      90
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