Trial of Probiotics to Lower Microbial Translocation and Immune Activation in HIV-Infected Adolescents
27 februari 2017 uppdaterad av: University of North Carolina, Chapel Hill
A Randomized Placebo-Controlled Trial of Probiotics to Lower Microbial Translocation and Immune Activation in HIV-Infected Adolescents
This is a randomized placebo-controlled trial to examine if once daily probiotic therapy will lower serum LPS levels and immune activation among HIV-infected youth.
Studieöversikt
Status
Indragen
Betingelser
Intervention / Behandling
Detaljerad beskrivning
This is a double masked randomized placebo-controlled trial to examine if once daily probiotic therapy will lower serum lipopolysaccharide (LPS) levels and immune activation among HIV-infected youth.
The study will enroll two cohorts: (1) a cohort of subjects who are not receiving antiretroviral therapy (ART) and have absolute CD4 T-cell count greater than 350 cells/ul and quantitative HIV-1 plasma RNA (viral load) less than 50,000 copies/ml; and (2) a cohort of subjects who are receiving ART and have absolute CD4 T-cell count greater than 350 cells/ul and and quantitative HIV-1 plasma RNA (viral load) less than 400 copies/ml.
Studietyp
Interventionell
Fas
- Inte tillämpbar
Deltagandekriterier
Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.
Urvalskriterier
Åldrar som är berättigade till studier
13 år till 24 år (Barn, Vuxen)
Tar emot friska volontärer
Nej
Kön som är behöriga för studier
Allt
Beskrivning
Inclusion Criteria:
To be considered eligible for enrollment, an individual must meet the criteria listed below.
- Age 13 years and 0 days to 24 years and 364 days at the time of consent
- Confirmed or suspected to have acquired HIV infection at age 10 years or older
- HIV-1 infection as documented by any FDA-approved ELISA test kit and confirmed by Western blot, HIV-1 culture, HIV-1 antigen, HIV-1 DNA, plasma HIV-1 RNA, or a second antibody test by a method other than ELISA at any time prior to pre-entry
- Absolute CD4 T-cell count greater than 350 cells/ul at pre-entry
- Cohort 1 - Not receiving ART and no exposure to ART in the 24 weeks prior to pre-entry: Quantitative HIV-1 plasma RNA (viral load) less than 50,000 copies/ml on two consecutive determinations at least 8 weeks apart in the 24 weeks prior to and including pre-entry
- Cohort 2 - Currently receiving ART and received ART for at least the 24 weeks prior to pre-entry: Quantitative HIV-1 plasma RNA (viral load) less than 400 copies/ml on two consecutive determinations at least 8 weeks apart in the 24 weeks prior to and including pre-entry
- Willingness to refrain from regular use of foods/supplements containing probiotics other than that supplied by the study during the course of study participation
Exclusion Criteria:
To be considered eligible for enrollment, an individual must not meet any of the criteria listed below.
- Known hypersensitivity to probiotics
- Active AIDS-defining condition or acute serious illness
- Cohort 1 - Not receiving ART and no exposure to ART in the 24 weeks prior to pre-entry: Any quantitative HIV-1 plasma RNA (viral load) equal to or greater than 50,000 copies/ml during the 24 weeks prior or at pre-entry.
- Cohort 2 - Currently receiving ART and received ART for at least the 24 weeks prior to pre-entry: Any quantitative HIV-1 plasma RNA (viral load) equal to or greater than 400 copies/ml during the 24 weeks prior or at pre-entry
- Known history of inflammatory bowel disease or similar disorder of the GI tract
- Current treatment with immune-modulating or immune-suppressive therapy
- Active malignancy at pre-entry
- Pregnancy
- Grade 3 or higher clinical or laboratory toxicities at the time of randomization
- Regular use of foods or supplements containing probiotics within the 2 weeks prior to randomization (see Appendix V)
- Concurrent participation in the ATN 061, 071, 081, and/or 101 protocols
Studieplan
Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Stödjande vård
- Tilldelning: Randomiserad
- Interventionsmodell: Parallellt uppdrag
- Maskning: Trippel
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
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Placebo-jämförare: Placebo
Subjects randomized to the placebo arm.
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The placebo sticks will contain approximately 1 g maltodextrin
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Experimentell: Probiotics
The probiotics use in the study contains two strains of Lactobacillus plantarum.
Each dose of the active study agent contains contains 1 g maltodextrin plus the probiotic bacteria Lp299v (5 x 109 cfu) and Lp299 (5 x 109 cfu).
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Probiotic is a live microorganism that when administered in adequate amounts confer a health benefit on the host.
It is classified by the FDA as "generally recognized as safe" (GRAS)
Andra namn:
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Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Plasma LPS levels
Tidsram: 32 Weeks
|
To determine if once daily probiotic therapy decreases microbial translocation in HIV-infected youth as measured by changes in plasma LPS.
|
32 Weeks
|
Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Stool colonization with Lactobacillus plantarum
Tidsram: 32 Weeks
|
To quantify the extent that Lactobacillus plantarum populates fecal samples obtained over time in HIV-infected youth receiving probiotics.
|
32 Weeks
|
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Plasma pro-inflammatory cytokines and macrophage activation
Tidsram: 32 Weeks
|
To determine if probiotic colonization of the gastrointestinal (GI) tract with Lactobacillus plantarum decreases levels of plasma pro-inflammatory cytokines and macrophage activation by measuring tumor necrosis factor alpha (TNFα), interferon alpha (IFNα), interleukin-1 beta (IL-1β), interleukin-6 (IL-6), interleukin-12p70 (IL-12p70), interleukin-10 (IL-10), and soluble CD14 (sCD14) as well as other markers of microbial translocation.
|
32 Weeks
|
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Lymphocyte activation markers
Tidsram: 32 Weeks
|
To determine if probiotic colonization of the GI tract with Lactobacillus plantarum results in decreased levels of T-cell activation markers as measured by shedding of soluble CD27 (sCD27), proportion of CD4 Th17 subsets, and expression of CD38 and HLA DR on CD8 T cells within ART treated and untreated HIV-infected youth.
|
32 Weeks
|
|
Quantitative HIV-1 plasma RNA (viral load) and CD4 T-cell count
Tidsram: 32 Weeks
|
To examine if probiotics have any impact on quantitative HIV-1 plasma RNA (viral load) and CD4 T-cell count among the study cohort.
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32 Weeks
|
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Stool microbial composition and genetic diversity
Tidsram: 32 Weeks
|
To molecularly characterize changes in overall bacteria diversity within the stool specimens of youth treated with probiotics.
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32 Weeks
|
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Safety labs and adverse events as a measure of acceptability and tolerability of probiotics
Tidsram: 32 Weeks
|
To examine the acceptability and tolerability of probiotics when administered to HIV-infected youth.
|
32 Weeks
|
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Food frequency and probiotics and lifestyle questionnaires
Tidsram: 32 Weeks
|
To explore the effect of diet, smoking, and dietary supplements on plasma pro-inflammatory cytokine levels.
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32 Weeks
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Samarbetspartners och utredare
Det är här du hittar personer och organisationer som är involverade i denna studie.
Samarbetspartners
Utredare
- Studiestol: John Sleasman, MD, University of South Florida
Publikationer och användbara länkar
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Användbara länkar
Studieavstämningsdatum
Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.
Studera stora datum
Studiestart
1 december 2011
Primärt slutförande (Förväntat)
1 december 2012
Avslutad studie (Förväntat)
1 december 2012
Studieregistreringsdatum
Först inskickad
4 november 2011
Först inskickad som uppfyllde QC-kriterierna
14 december 2011
Första postat (Uppskatta)
15 december 2011
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
28 februari 2017
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
27 februari 2017
Senast verifierad
1 februari 2016
Mer information
Termer relaterade till denna studie
Nyckelord
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- ATN 097
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