Micro-nutritional Status and Gut Microbiota in Morbidly Obese Patients Before and After Gastric Bypass

NCT ID: NCT03029572

Last Updated: 2017-01-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

90 participants

Study Classification

INTERVENTIONAL

Study Start Date

2009-02-28

Study Completion Date

2012-12-31

Brief Summary

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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

Detailed Description

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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).

Conditions

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Obesity Bariatric Surgery Candidate

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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Standard diet

Standard healthy diet after RYGB surgery

Group Type ACTIVE_COMPARATOR

Bariatric surgery

Intervention Type PROCEDURE

Roux-en-Y gastric bypass provided in both arms.

Micro-nutriments' supplementation

Healthy diet and probiotics, minerals, aminoacids, omega-3 acids vitamin and mineral supplementation after RYGB surgery

Group Type EXPERIMENTAL

Diet supplementation

Intervention Type DRUG

Micronutriment supplementation therapy

Bariatric surgery

Intervention Type PROCEDURE

Roux-en-Y gastric bypass provided in both arms.

Interventions

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Diet supplementation

Micronutriment supplementation therapy

Intervention Type DRUG

Bariatric surgery

Roux-en-Y gastric bypass provided in both arms.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Obesity BMI\>40 kg/m2

Exclusion Criteria

* Antidepressant treatment
Minimum Eligible Age

20 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University Hospital, Geneva

OTHER

Sponsor Role lead

Responsible Party

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Zoltan Pataky

Deputy Head

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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University Hospitals of Geneva

Geneva, , Switzerland

Site Status

Countries

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Switzerland

Other Identifiers

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08-005

Identifier Type: -

Identifier Source: org_study_id

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