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Glycemic Index Variations In the Early Period Following Bariatric Surgery

NCT04263168 · Status: WITHDRAWN · Phase: NA · Type: INTERVENTIONAL

Last updated 2021-10-11

No results posted yet for this study

Summary

The diverse community of gut microbes commonly referred to as the 'gut microbiome', is increasingly suggested to play significant roles in health and disease, and to affect even distant non-GI organs by metabolite signaling. Type 2 diabetes mellitus (T2DM) patients feature a distinct gut microbiome signature4, while modulating the gut microbiome by either antibiotics or fecal microbial transplantation (FMT) is suggested to impact insulin sensitivity. Originally designed to treat obesity, bariatric surgeries often induce a robust and rapid weight-independent improvement in glucose homeostasis within days. Early diabetes remission following bariatric surgery is hypothesized to be mediated by rapid alterations in the gut microbiome and bile acids composition, however, the exact mechanism is yet to be uncovered. Elucidating this mechanism is important as it may form the basis of a new therapeutic modality in diabetes. The investigators intend to deeply characterize early post-bariatric changes in the gut microbiome of diabetic patients, as well as their gut mucosal transcriptome and metabolome, by using state-of-the-art experimental and computational pipelines. Additionally, The investigators will utilize a unique mouse model of bariatric surgery under germ-free conditions, developed at the Elinav lab, that allows us to dissect the role of microbes in post-operative metabolic improvements.

Conditions

Interventions

DIAGNOSTIC_TEST

Continuous Glucose monitoring in the perioperative period

All participants will undergo medical and metabolic profiling before surgery at baseline, and during the first two weeks following surgery. Metabolic profiling will take place during a run-in session in the Sheba medical center, that will include (A) A detailed briefing on study design, goals, samples collection and OGTT, as well as home sample-collecting kit distribution (B) Installation of a continuous glucose monitoring system (CGM, Abbott 'freeStyle Libre').

Sponsors & Collaborators

  • Weizmann Institute of Science

    collaborator OTHER

  • Sheba Medical Center

    lead OTHER_GOV

Study Design

Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
99 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2020-03-01
Primary Completion
2022-01-01
Completion
2022-08-01

Countries

  • Israel

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04263168 on ClinicalTrials.gov