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Recruitment potential impaired by shift in clinical care whereby practically all HIV patients receive standard treatment as soon as possible after HIV diagnosis
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| Name | Class |
|---|---|
| CIHR Canadian HIV Trials Network | NETWORK |
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Modern antiretroviral therapy (ART) has transformed the clinical care and lived experience of HIV infection. However, increased rates of adverse health conditions that are related to immune activation, such as cardiovascular disease (CVD) and neurodegenerative disease in ART-treated individuals persist. An important cause of this inflammation is the gut CD4 T cell loss and the "leaking" or translocation of luminal gut bacteria and other microbes across the bowel wall and into the bloodstream.
The use of complementary and alternative therapies is common among people living with HIV, however their efficacy has generally not been well demonstrated. Probiotics are live microbes that may provide a health benefit to the host and the investigators believe that the simultaneous use of probiotics along with antiretroviral therapy (ART) will improve gut CD4 T cell restoration and function and therefore reduce microbial translocation and immune activation.
Probiotic Visbiome consists of a high potency blend of eight different probiotics. The precise mechanism of action of Visbiome is unknown, but preclinical studies have shown that Visbiome may modulate the immune response towards a phenotype that is associated with reduce inflammation, and Visbiome was also protective in a non-human primate model of SIV infection. Therefore, we believe that the "beneficial" bacteria from Visbiome will accelerate the normalization of gut immune cells and function in HIV-infected individuals as they start ART. Early resolution of gut immune cells may normalize microbial translocation and immune activation and will reduce the rates of HIV-associated comorbidities.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Probiotic Group | Experimental | Visbiome experimental group (900 billion bacteria daily; 2 sachets daily) |
|
| Placebo Group | Placebo Comparator | Placebo comparator group |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Visbiome | Drug | Visbiome probiotic |
| |
| Placebo |
| Measure | Description | Time Frame |
|---|---|---|
| Blood immune activation | Percent of blood immune activation (coexpression of CD38 and HLA-DR) on CD8 T cells at week 24 in participants randomized to probiotic Visbiome versus the placebo arm | 24 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| Level of microbial translocation (including LPS and sCD14) | 24 weeks | |
| Plasma level of inflammation and coagulation (including IL-6, D-dimer and CRP) | 24 weeks | |
| Measure | Description | Time Frame |
|---|---|---|
| Metabolomic measurements: vitamin D levels, glucose measurements, insulin levels and lipid profiling | 24 weeks | |
| Bacterial community diversity, determined by 16s rRNA gene sequencing of penile swabs | 24 weeks |
Inclusion Criteria:
Exclusion Criteria:
Current alcohol or substance use judged by the Investigator to potentially interfere with participant study compliance
Taking pharmaceutical grade probiotics
Any of the following abnormal laboratory results in screening:
Malignancy
Colitis
Liver fibrosis (decompensated cirrhosis), portal hypertension or clinical hepatitis
Other significant underlying disease (non-HIV-1) that might impinge upon disease progression or death
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| Name | Affiliation | Role |
|---|---|---|
| Rupert Kaul, MD | University Health Network, Toronto | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Maple Leaf Medical Clinic | Toronto | Ontario | M5G 1K2 | Canada | ||
| Toronto General Hospital, UHN |
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| Other |
Placebo |
|
| Number and function of gut immune cells (including CD4 T cell subsets) |
| 24 weeks |
| Intestinal permeability (Lac/Mac ratio) | 24 weeks |
| Microbiome analysis by 16s rRNA bacterial DNA isolated from gut tissue and anal swabs | 24 weeks |
| Gut HIV DNA levels | 24 weeks |
| Canadian Diet History Questionnaire | 24 weeks |
| Safety assessed by AE monitoring and participant questionnaire | 24 weeks |
| Tolerability of Visbiome assessed by AE monitoring and participant questionnaire | 24 weeks |
| Adherence to probiotic Visbiome assessed by participant questionnaire and sachet count | 24 weeks |
| Bacterial community composition, determined by 16s rRNA gene sequencing of penile swabs | 24 weeks |
| Blood immune activation (open-label) | Percent of blood immune activation (coexpression of CD38 and HLA-DR) on CD8 T cells at week 24 in participants randomized to probiotic Visbiome versus the placebo arm | 48 weeks |
| Level of microbial translocation (including LPS and sCD14) (open-label) | 48 weeks |
| Plasma levels of inflammation and coagulation (including IL-6, D-dimer and CRP) (open-label) | 48 weeks |
| Number and function of gut immune cells (including CD4 T cell subsets) (open-label) | 48 weeks |
| Intestinal permeability (Lac/Man) (open-label) | 48 weeks |
| Microbiome analysis by 16s rRNA bacterial DNA isolated from penile swabs (open-label) | 48 weeks |
| Gut HIV DNA levels (open-label) | 48 weeks |
| Canadian Diet History Questionnaire (open-label) | 48 weeks |
| Safety (open-label) assessed by AE monitoring and participant questionnaire | 48 weeks |
| Tolerability of Visbiome (open-label) assessed by AE monitoring and participant questionnaire | 48 weeks |
| Adherence to probiotic Visbiome (open-label) assessed by participant questionnaire and sachet count | 48 weeks |
| Toronto |
| Ontario |
| M5G 2N2 |
| Canada |