Impact of JuicePlus+ on the Health Status of an Overweight Stressed Population
The purpose of this study is to determine if a dried fruit and vegetable supplement (Juice Plus+) can alter the gut microbiome and improve gut permeability and inflammatory levels in an obese, stressed population.
The microbiome and its component genes are long known as critical determinants of the nutritional value of the food we eat. Recently, it has become clear that the composition of this microbiome and its metabolites influences the host immune system, thereby altering host physiology. Both obesity and chronic stress have been shown to have an altered gut microbiome; both these conditions also lead to increased systemic inflammatory molecules that can lead to an increased risk for type 2 diabetes and other diseases caused by chronic inflammation.
Juice Plus+ consumed by an overweight population combined with an eight week exercise regime showed decreased markers of protein/lipid oxidation (ox-LDL), total lipid oxidation (TOS) and lowered systemic concentrations of the inflammatory cytokine, TNF-α. As systemic cytokines are altered by the composition of the gut microbiome, this study proposes to determine if this decrease in inflammation by Juice Plus+ is due to a change in the species composition and metabolism of the microbiome. This question is particularly relevant for populations with high inflammatory loads resulting from excess weight in addition to increased psychological stress.
The investigators propose to determine 1) how Juice Plus+ consumption alters the microbiome species composition and metabolism, 2) if there is an alteration in intestinal permeability with the consumption of Juice Plus+ and 3) do these alterations coincide with lower systemic markers of inflammation and oxidative stress among individuals who are psychologically stressed and overweight. The investigators will use a randomized, placebo-controlled design with a cohort of overweight, female, critical care health care professionals. Subjects will receive the supplements or placebo for sixteen weeks. At the end of 16 weeks, the cohort receiving the supplement will be randomized to also receive a meal replacement component or follow their normal diet for an additional 4 weeks. Stool and a fasting blood sample will be collected at the beginning of the study (baseline) and 8, 16 and 20 weeks later. At each time point, subjects will also consume a cocktail of glucose, mannitol and lactulose and a second blood draw performed to look at absorption of these molecules.
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Basic Science
|Official Title:||The Effect of Juice Plus+ on the Microbiome, Intestinal Permeability and Inflammatory Status of Psychologically Stressed Individuals With High Body Mass Indices|
- Changes in intestinal microbiome composition induced by a fruit and vegetable supplement using 16S rRNA sequencing analysis [ Time Frame: 1 year ]
- Changes in intestinal permeability by biochemical analysis [ Time Frame: 1 year ]
- Changes in systemic inflammatory molecules by cytokine analysis [ Time Frame: 1 year ]
|Study Start Date:||January 2015|
|Estimated Study Completion Date:||May 2016|
|Estimated Primary Completion Date:||January 2016 (Final data collection date for primary outcome measure)|
Active Comparator: Juice Plus+
Subject will be taking supplement.
Dietary Supplement: Juice Plus+
Dried fruit and vegetable juice capsule.
Placebo Comparator: Placebo
Subjects will be taking the placebo.
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Please refer to this study by its ClinicalTrials.gov identifier: NCT02512107
|Contact: Marie van der Merwe, PhD||901 678 email@example.com|
|United States, Tennessee|
|The University of Memphis||Recruiting|
|Memphis, Tennessee, United States, 38152|
|Contact: Marie van der Merwe, PhD 901-678-3476 firstname.lastname@example.org|
|Principal Investigator:||Marie van der Merwe, PhD||University of Memphis|