- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05724524
Exploratory Study on the Role of the Digestive Microbiota in Adults Living With HIV-1 (MICRACTIVIH)
Exploratory Study on the Role of the Digestive Microbiota and Bacterial Translocation in the Immune Activation Profile Associated With Insulin Resistance in Male Caucasian Adults Living With HIV-1 on Effective Antiretroviral Therapy.
Chronic immune activation present in aviremic people living with HIV under treatment promotes the onset of insulin resistance and metabolic syndrome, paving the way for the comorbidities that are currently the main causes of morbidity. This activation continues despite effective antiretroviral therapy. In the ACTIVIH study (NCT02334943) the analysis of 68 AI markers allowed classification of 120 aviremic PLHIV under treatment for at least 2 years according to 5 different immune activation profiles. Among these 5 profiles, Profile 2 was characterized by high blood pressure figures, high waist sizes, low HDL-cholesterol levels, high triglyceridemia, and especially hyperinsulinemia. Several studies have shown that the digestive microbiota of this population is less rich and less diverse than that of healthy subjects. However, the digestive microbiota and in particular bacterial proteins and metabolites seem to play a key role in immune activation in people living with HIV. Finally, the digestive microbiota has already been shown to have an impact on insulin sensitivity.
The study investigators hypothesize that a particular digestive microbiota could promote the appearance of Profile 2. This microbiota could be the cause of digestive dysbiosis leading to intestinal inflammation, digestive permeability and bacterial translocation.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Contacts and Locations
Study Locations
-
-
-
Montpellier, France
- CHU Gui de Chauliac
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Nîmes, France
- CHU de Nîmes
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Patient informed of the implementation of the study, its objectives, its constraints and the patient's rights.
- Male and Caucasian patient.
- Patient with HIV-1 infection determined by positive serology or plasma viral load (HIV RNA) measurement.
- Patient on effective triple antiretroviral therapy, stable for more than 6 months, with a plasma viral load <50 copies / ml for at least 6 months before inclusion (2 measurements).
- Patient whose immune activation profile has been characterized beforehand (profiles 1, 2, 3, 4 and 5).
- The patient must have given their free and informed consent and signed the consent form
- The patient must be a member or beneficiary of a health insurance plan
Exclusion Criteria:
- Vulnerable person according to article L1121-6 of the CSP.
- Adult person protected according to article L1121-8 of the CSP.
- Patient presenting with a non-infectious pathology which may be the cause of an immune abnormality.
- Patient having undergone treatment with an immunomodulator molecule or chemotherapy within 60 days before inclusion in the research or has an indication planned for the duration of the research.
- Patient with a chronic digestive pathology or who had been operated on the previous year
- The subject is participating in a category 1 interventional study, has participated in another interventional study in the last 3 months or is in a period of exclusion determined by a previous study
- The subject refuses to sign the consent
- It is impossible to give the subject informed information
- The patient is under safeguard of justice or state guardianship
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Profile 2
People living with HIV with immune activation profile 2: inflammatory profile - high level of sTNFRI
|
50mg stool sample taken for protein extraction
Venous blood sample taken for analysis of serum and plasma
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Other profiles
People living with HIV with immune activation profiles1 + 3-5: T8, NK, T4 and monocyte profiles
|
50mg stool sample taken for protein extraction
Venous blood sample taken for analysis of serum and plasma
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Nature of gut microbiota bacterial proteins in patients with immune activation profile 2 versus all other profiles
Time Frame: Day 0
|
Number of bacterial proteins present in stool samples from patients, identified by high-performance liquid chromatography mass spectrometry
|
Day 0
|
Nature of gut microbiota taxonomy in patients with immune activation profile 2 versus all other profiles
Time Frame: Day 0
|
Number of operational taxonomic units present in stool samples from patients, identified by high-performance liquid chromatography mass spectrometry
|
Day 0
|
Relative quantification of gut microbiota bacterial proteins in patients with immune activation profile 2 versus all other profiles
Time Frame: Day 0
|
Percentage of the various bacterial proteins present in stool samples from patients, identified by high-performance liquid chromatography mass spectrometry (%)
|
Day 0
|
Relative quantification of gut microbiota taxonomy in patients with immune activation profile 2 versus all other profiles
Time Frame: Day 0
|
Percentage of the various operational taxonomic units present in stool samples from patients, identified by high-performance liquid chromatography mass spectrometry (%)
|
Day 0
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Richness of Firmicutes and Bacteroidetes in patients with immune activation profile 2 versus all other profiles
Time Frame: Day 0
|
Rarefaction curves
|
Day 0
|
Diversity of Firmicutes and Bacteroidetes in patients with immune activation profile 2 versus all other profiles
Time Frame: Day 0
|
Shannon index
|
Day 0
|
beta-diversity of Firmicutes and Bacteroidetes in patients with immune activation profile 2 versus all other profiles
Time Frame: Day 0
|
Unifrac
|
Day 0
|
Level of phyla and minority species in the stool in patients with immune activation profile 2 versus all other profiles
Time Frame: Day 0
|
high-performance liquid chromatography mass spectrometry
|
Day 0
|
Level of CD14S in serum of patients with immune activation profile 2 versus all other profiles
Time Frame: Day 0
|
ng/ml by ELISA
|
Day 0
|
Level of Lipopolysaccharide Binding Protein (LBP) in serum of patients with immune activation profile 2 versus all other profiles
Time Frame: Day 0
|
pg/ml by ELISA
|
Day 0
|
Level of intestinal fatty acid binding protein (I-FABP) in serum of patients with immune activation profile 2 versus all other profiles
Time Frame: Day 0
|
ng/ml by ELISA
|
Day 0
|
Level of bacterial 16S rDNA in plasma of patients with immune activation profile 2 versus all other profiles
Time Frame: Day 0
|
Copies/µl
|
Day 0
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Transcriptomic analysis of peripheral blood mononuclear cells
Time Frame: Day 0
|
RNAseq
|
Day 0
|
Collaborators and Investigators
Investigators
- Study Director: Jean-Philippe Lavigne, Centre Hospitalier Universitaire De Nimes
Study record dates
Study Major Dates
Study Start (ANTICIPATED)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- AOI GCS-MERRI/2019/JPL-01
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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