Association Between TMAO and Diabetes

NCT ID: NCT03130894

Last Updated: 2017-04-27

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

Total Enrollment

2694 participants

Study Classification

OBSERVATIONAL

Study Start Date

2012-01-01

Study Completion Date

2016-06-30

Brief Summary

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Background: The association of trimethylamine-N-oxide (TMAO), a microbiota dependent metabolite from dietary choline and carnitine, with type 2 diabetes was inconsistent.

Objective: The investigators planned to investigate the association between plasma TMAO and newly diagnosed type 2 diabetes as well as whether the association could be modified by the TMAO-generating enzyme flavin monooxygenase 3 (FMO3) polymorphisms.

Design: This is an age- and sex-matched case-control study of 2694 participants: 1346 newly diagnosed cases of type 2 diabetes and 1348 controls. The patients of newly diagnosed type 2 diabetes were consecutively recruited from those attending for the first time the outpatient clinics of Department of Endocrinology, Tongji Medical College Hospital, Wuhan, China, from 2012 January to December 2014. Concomitantly, the investigators recruited healthy individuals who were frequency-matched by age (±5 years) and sex to patients from an unselected population undergoing a routine health check-up in the same hospital. The inclusion criteria for controls and newly diagnosed type 2 diabetes were: age ≥ 30 years, body mass index (BMI) \< 40 kg/m2, no history of a diagnosis of diabetes and no history of receiving pharmacological treatment for hyperlipidaemia or hypertension. Patients with clinically significant neurological, endocrinological or other systemic diseases, as well as acute illness or chronic inflammatory or infective diseases, were excluded from the study. All the participants enrolled were of Chinese Han ethnicity. All the participants gave informed written consent to the study and did not take any medication known to affect glucose tolerance or insulin secretion before participation. The study was approved by the ethics committee of the Tongji Medical College. Concentrations of plasma TMAO were measured, and FMO3 E158K polymorphism (rs2266782) were genotyped.

Detailed Description

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Conditions

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Type2 Diabetes

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Healthy control

A FPG concentration \< 6.1 mmol/l, and a 2-h oral glucose tolerance test (OGTT) plasma glucose concentration \< 7.8 mmol/l was considered normal glucose tolerance.

Plasma TMAO concentration

Intervention Type OTHER

Plasma TMAO concentration

Type 2 diabetes

Type 2 diabetes was diagnosed when fasting plasma glucose (FPG) ≥ 7.0 mmol/l, and/or 2-h post-glucose load ≥ 11.1 mmol/l.

Plasma TMAO concentration

Intervention Type OTHER

Plasma TMAO concentration

Interventions

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Plasma TMAO concentration

Plasma TMAO concentration

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Concomitantly, we recruited healthy individuals who were frequency-matched by age (±5 years) and sex to patients from an unselected population undergoing a routine health check-up in the same hospital.

Exclusion Criteria

* Patients with clinically significant neurological, endocrinological or other systemic diseases, as well as acute illness or chronic inflammatory or infective diseases, were excluded from the study.
Minimum Eligible Age

30 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Liegang Liu

OTHER

Sponsor Role lead

Responsible Party

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Liegang Liu

Professor

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Liegang Liu, PhD

Role: STUDY_DIRECTOR

Huazhong University of Science and Technology

References

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Shan Z, Sun T, Huang H, Chen S, Chen L, Luo C, Yang W, Yang X, Yao P, Cheng J, Hu FB, Liu L. Association between microbiota-dependent metabolite trimethylamine-N-oxide and type 2 diabetes. Am J Clin Nutr. 2017 Sep;106(3):888-894. doi: 10.3945/ajcn.117.157107. Epub 2017 Jul 19.

Reference Type DERIVED
PMID: 28724646 (View on PubMed)

Other Identifiers

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2012BAI02B02

Identifier Type: -

Identifier Source: org_study_id

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