Microbiota Footprint and Frailty Phenotype in Virologically Suppressed People Living With HIV

Study Overview
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Brief Summary
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Analysis of gut microbiota becomes more and more accessible in recent years. Experimental data in both animal and human studies have demonstrated that imbalance of the gut microbiota which is called symbiosis may participate in an accelerated procedure of ageing as well as the expression of frailty phenotype. People living with HIV (PLHIV) present markers of phenotypic frailty on average 10 years before uninfected people. In this population structural and functional modifications of GALT (Gut Associated Lymphoid Tissue) are observed early after HIV infection and persist despite virological suppression on ART (AntiRetroviral Treatment). These GALT modifications are associated with microbial translocation that is also correlated with immune activation and dysbiosis. The objective of study is to explore gut microbiota of PLWH over 5 years, as well as to study associations of its longitudinal evolution with frailty markers and burden of comorbidities.

Official Title
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Microbiota Footprint and Frailty Phenotype in Virologically Suppressed People Living With HIV

Conditions
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HIV Infections

Intervention / Treatment
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* Other: Stool sampling
* Other: Frailty phenotype
* Other: Blood plasma collection


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Individuals infected with HIV in the stable phase of their disease (absence of disease outbreak and absence of therapeutic modification within 3 months before inclusion), Subject with ongoing HIV follow-up on an outpatient basis (outpatient or day hospital consultation) in the participating center, and having virological suppression at the threshold of 50 copies / mL for at least 5 years (tolerance of blips < 200 copies / mL during this period) Aged ≥ 55 at baseline CD4 + T cell nadir> 200 / mm3 Giving free and informed written consent Being affiliated with or benefiting from a social security scheme. Exclusion Criteria: Persons treated with antibiotics, probiotics, prebiotics or any other treatment that may disrupt the gut microbiota within two months before stool sampling. Subject not followed regularly in the participating center, Subject only coming for full hospitalization Subject in the primary infection phase of less than 1 year

Ages Eligible for Study
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Minimum Age: 55 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 |
| --- | --- |
| Frail PLWH<br> | Other: Stool sampling<br>* Stool samples will be collected from participants at baseline and annually during 5 years<br>Other: Frailty phenotype<br>* According to Fried frailty phenotype based on the assessment of 5 criteria: shrinking (unintentional weight loss), weakness (grip strength), poor endurance (exhaustion), slowness (walking speed) and physical activity. Frail phenotype is defined as the presence of at least 3 criteria of the above mentioned and Pre-frail phenotype as the presence of 1 or 2 criteria.<br>Other: Blood plasma collection<br>* Blood plasma collection to measure persistent inflammation and immune activation<br>|
| Pre frail PLWH<br> | Other: Stool sampling<br>* Stool samples will be collected from participants at baseline and annually during 5 years<br>Other: Frailty phenotype<br>* According to Fried frailty phenotype based on the assessment of 5 criteria: shrinking (unintentional weight loss), weakness (grip strength), poor endurance (exhaustion), slowness (walking speed) and physical activity. Frail phenotype is defined as the presence of at least 3 criteria of the above mentioned and Pre-frail phenotype as the presence of 1 or 2 criteria.<br>Other: Blood plasma collection<br>* Blood plasma collection to measure persistent inflammation and immune activation<br>|
| No frail PLWH<br> | Other: Stool sampling<br>* Stool samples will be collected from participants at baseline and annually during 5 years<br>Other: Frailty phenotype<br>* According to Fried frailty phenotype based on the assessment of 5 criteria: shrinking (unintentional weight loss), weakness (grip strength), poor endurance (exhaustion), slowness (walking speed) and physical activity. Frail phenotype is defined as the presence of at least 3 criteria of the above mentioned and Pre-frail phenotype as the presence of 1 or 2 criteria.<br>Other: Blood plasma collection<br>* Blood plasma collection to measure persistent inflammation and immune activation<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Variation of the Shannon index between 0 and 5 years in different groups of PLWH |  | Five years | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Variation of the Shannon index between 0 and 3 years in different groups of PLWH (frail, pre frail, not frail) |  | Three years | 
| Assaying inflammation markers(CRP, IL-6, sCD14, sCD163, TNFa, IP10, I-FABP, LBP, D-dimers, K/T ratio) annually and for 5 years in different groups of PLWH |  | Five years | 
| Correlation between the Shannon index and the number of comorbidities associated with 0, 3 and 5 years in the different groups of PLWH |  | Five years |