Bile Acids and Gut Microbiota as Potent Coronary Atheroma Risk Factors: a Prospective Study in Human

Study Overview
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Brief Summary
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The purpose of this study is to describe the composition of bile acids and the gut microbiota comparing two populations: patients with coronary atheroma and the healthy subjects. Our hypothesis is based on the demonstration of the anti atherogenic and anti inflammatory effect of certain bile acids, and the role of the gut microbiota in the metabolic regulation.

Detailed Description
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Atherosclerosis is the main cause of cardiovascular diseases which remain the first cause of death worldwide. The prevention of risk factors can reduce the development of cardiovascular diseases. The final goal of our study is to find new protective or new risk factors that can be modulated to reduce the incidence of cardiovascular events. Gut microbiota and its main metabolite, the bile acids, are implicated in the metabolic regulation. Some bile acids, especially the secondary bile acids, transformed from the primary bile acids by the bacteria of the gut microbiota, are now demonstrated in murine experimental atherosclerosis models, to be anti inflammatory and anti atherogenic molecules. We want to compare the pool of bile acids and the composition of gut microbiota between the coronary patients and the healthy subjects to identify the potential protective or deleterious bacteria / bile acids. All patients admitted for a scheduled coronary angiogram will be included, then divided into two groups: coronary or healthy, based on the presence or the absence of atheroma during the coronary angiogram. Feces and blood samples, and clinical and biological data, will be collected during the patient's hospitalisation. No additional exam will be performed. The blood sample will be collected during the coronary angiogram or during a routine blood test.

Official Title
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The Official Title is in French: Microbiote, Acides Biliaires et Athérome Coronaire (MABAC)

Conditions
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Coronary Disease

Intervention / Treatment
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* Other: No intervention
* Other: Healthy subject


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: - All patients admitted for a coronary angiogram Exclusion Criteria: Statins, hypolipemic drugs, corticoids, anti HIV drugs Antibiotics adminisitration in the last 3 months Past of cholecystectomy Hepatic disorders Acute coronary syndrome No agreement, Insufficiency in comprehension Non fasting for at least 8 hours

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 79 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Coronary patients<br>Feces, blood sample, clinical and biological data. Presence (1) of coronary disease defined as the presence of atheroma during the coronary angiogram | Other: No intervention<br>* Collecting blood and feces samples<br>|
| Healthy subjects (2)<br>Feces, blood sample, clinical and biological data. Absence (2) of atheroma during the coronary angiogram | Other: Healthy subject<br>* Collecting blood and feces samples<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Gut microbiota composition in coronary patients versus healthy subject | Observational only | 8 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Bile acids composition in coronary patients versus healthy subjects, in feces and blood samples | Observational | 8 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Coronary disease, Bile acids, Gut microbiota, Risk factors, Atherosclerosis