ClinicalTrials.gg
RecruitingNCT03418857PROUpdated Dec 14, 2021

Probiotics and Gut Health

A Phase 1/2 interventional study of Yogurt smoothie with BB-12 and Yogurt smoothie in Metabolic Syndrome, sponsored by Penn State University. Recruiting at 1 site in United States. Open to participants aged 55 Years to 75 Years. Per ClinicalTrials.gov, last updated 2021-12-14.

Sponsored by Penn State University · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Oct 2022, 4 years 1 month ago, but the record still lists the study as recruiting.
  • Started Jun 2018; still recruiting 8 years 4 months later.
Phase
Phase 1/2
Study type
Interventional
Enrollment
40
Allocation
Randomized
Ages
55 Years to 75 Years
Sex
All
01

Study summary

This study evaluates the effects of probiotic consumption on inflammatory outcomes and measures of gut health. Participants will be given yogurt with probiotics for one period and yogurt without probiotics for another, with a break in between. These periods will occur in random order.

02

Conditions studied

  • Metabolic Syndrome

Keywords

  • probiotics
  • Human
  • obesity
  • non-pharmacologic therapy
  • gut health
  • microbiome
  • inflammation
03

In context

Metabolic Syndrome

2,116 studies on the registry are indexed under Metabolic Syndrome; 347 are open to participants now.

This study's planned enrollment of 40 is below the median of 60 across 1,572 interventional studies indexed under Metabolic Syndrome.

Browse Metabolic Syndrome studies →

Lead sponsor

Penn State University is the lead sponsor of 270 studies on the registry; 53 are open to participants now.

Of its 15 completed or terminated interventional studies of FDA-regulated products, 11 (73%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
55 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • ≥ to 25 and less than 35 kg/m\^2
  • Increased waist circumference (men: ≥ 94 cm, women: ≥ 80 cm)
  • At least one of the metabolic syndrome criteria-
  • serum triglycerides: ≥ 150 mg/dL
  • HDL cholesterol: ≤ 40 mg/dL in men, ≤ 50 mg/dL in women
  • blood pressure: ≥ 130 mmHg systolic or ≥ 85 mmHg diastolic
  • fasting plasma glucose ≥ 100 mg/dL

Exclusion criteria

Exclusion Criteria:

  • allergy to dairy
  • smoking and/or use of tobacco products
  • systolic blood pressure ≥ 160 mmHg
  • diastolic blood pressure > 100 mmHg
  • fasting glucose ≥ 126 mg/dL
  • history of myocardial infarction, cardiovascular disease (CVD), stroke, diabetes mellitus, liver disease, kidney disease, thyroid disease (unless controlled on medication)
  • use of cholesterol or lipid lowering medications
  • use of anti-hypertensive or glucose lowering supplements (psyllium, fish oil capsules, soy lecithin, niacin, fiber, flax, phytoestrogens, and stanol/sterol supplemented foods)
  • refusal to discontinue nutritional supplements, herbs, vitamins, or other probiotics
  • clinical diagnosis of inflammatory bowel disease (IBD) e.g. Chron's disease or ulcerative colitis
  • Use of antibiotics within the last 2 months
  • excessive alcohol consumption (≥ 14 standard drinks per week)
  • regular use of anti-inflammatory medications (e.g. aspirin, ibuprofen)
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Care provider)
Enrollment
40 participants (estimated)

Study arms

  • Experimental
    Experimental

    Participants will consume one yogurt smoothie daily for the duration of the intervention that contains 3.16 × 109 colony forming units (CFU) bifidobacterium animalis subsp. lactis BB-12. Participants will be asked to refrain from consumption of other yogurt or probiotic-containing foods.

    Drug: Yogurt smoothie with BB-12

  • Placebo comparator
    Control

    Participants will consume one yogurt smoothie daily for the duration of the intervention that contains no BB-12. Participants will be asked to refrain from consumption of other yogurt or probiotic-containing foods.

    Drug: Yogurt smoothie

Interventions

  • DrugYogurt smoothie with BB-12

    During the one month intervention period, the participants will consume one yogurt smoothie with BB-12 daily.

  • DrugYogurt smoothie

    During the one month control period, the participants will consume one yogurt smoothie daily.

06

What researchers measure

Primary outcomes

  1. Change from baseline in inflammatory markers

    Change in inflammatory markers in the serum and secreted cytokines from lipopolysaccharide (LPS)-stimulated peripheral blood mononuclear cells compared to baseline. In the serum the markers to be investigated are high sensitivity c-reactive protein (hs-CRP), tumor necrosis factor alpha (TNF-a), interleukin 1 beta (IL-1B), IL-6, IL-8, IL-10, IL-12p70, monocyte chemotactic protein 1 (MCP-1), macrophage inflammatory protein alpha (MIP-1a), sCD14, and LPS binding protein (LPB). From LPS-stimulated peripheral blood mononuclear cells the cytokines to be investigated are TNF-a, IL-1B, IL-6, IL-8, IL-10, IL-12p70, MCP-1, and MIP-1a. Changes in these inflammatory markers will assist in understanding how the consumption of yogurt containing BB-12 affects the inflammatory status of obese individuals.

    Time frame: At baseline before intervention period 1, at endpoint of intervention period 1 (week 4), at baseline before intervention period 2 (week 8), at endpoint after intervention period 2 (week 12)

Secondary outcomes

  1. Change in number and activation of leukocytes

    Change in quantity and activation of T cells, B cells, dendritic cells, natural killer cells, and monocytes measured by flow cytometry before and after each period. Changes in the number and activation of leukocytes will assist in understanding the impacts of the consumption of yogurt containing BB-12 on leukocytes in obese individuals.

    Time frame: At baseline before intervention period 1, at endpoint of intervention period 1 (week 4), at baseline before intervention period 2 (week 8), at endpoint after intervention period 2 (week 12)

  2. Change in gut permeability

    Change in gut permeability, assessed using a lactulose/mannitol gut permeability assay, from baseline. Changes in gut permeability will assist in understanding the impacts of the consumption of yogurt containing BB-12 on gut health and permeability in obese individuals.

    Time frame: At baseline before intervention period 1, at endpoint of intervention period 1 (week 4), at baseline before intervention period 2 (week 8), at endpoint after intervention period 2 (week 12)

  3. Change in gut microbiota populations

    Change in gut microbiota populations, assessed with 16s ribosomal ribonucleic acid (rRNA), compared to baseline. Changes in microbial populations will assist in understanding the impacts of the consumption of yogurt containing BB-12 on commensal gut microbiota in obese individuals.

    Time frame: At baseline before intervention period 1, at endpoint of intervention period 1 (week 4), at baseline before intervention period 2 (week 8), at endpoint after intervention period 2 (week 12)

  4. Change in metabolism of gut microbiota populations

    Change in the metabolism of gut microbiota populations, measured via transcriptomics, compared to baseline. Changes in the transcriptome of the commensal microbiota will assist in understanding the impacts of the consumption of yogurt containing BB-12 on the metabolism of commensal gut microbiota in obese individuals.

    Time frame: At baseline before intervention period 1, at endpoint of intervention period 1 (week 4), at baseline before intervention period 2 (week 8), at endpoint after intervention period 2 (week 12)

Other outcomes

  1. Change in trimethylamine N-oxide (TMAO) in serum

    Change in TMAO in serum measured using liquid chromatography with tandem mass spectrometry (LC-MS) compared to baseline. Changes in TMAO, which is associated with gut microbiota, will assist in understanding the mechanism that connects changes in the commensal microbiota in the gut to inflammatory outcomes in obese individuals.

    Time frame: At baseline before intervention period 1, at endpoint of intervention period 1 (week 4), at baseline before intervention period 2 (week 8), at endpoint after intervention period 2 (week 12)

  2. Change in serum metabolomic profile

    Change in serum metabolomic profile, assessed in hydrophilic and hydrophobic fractions, compared to baseline. Changes in the metabolomic profile will assist in understanding the underlying mechanisms that connect consumption of yogurt containing BB-12 to changes in inflammatory status in obese individuals.

    Time frame: At baseline before intervention period 1, at endpoint of intervention period 1 (week 4), at baseline before intervention period 2 (week 8), at endpoint after intervention period 2 (week 12)

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Meng H, Ba Z, Lee Y, Peng J, Lin J, Fleming JA, Furumoto EJ, Roberts RF, Kris-Etherton PM, Rogers CJ. Consumption of Bifidobacterium animalis subsp. lactis BB-12 in yogurt reduced expression of TLR-2 on peripheral blood-derived monocytes and pro-inflammatory cytokine secretion in young adults. Eur J Nutr. 2017 Mar;56(2):649-661. doi: 10.1007/s00394-015-1109-5. Epub 2015 Nov 30. PubMed 26621631 ↗
  • Aggarwal BB. Targeting inflammation-induced obesity and metabolic diseases by curcumin and other nutraceuticals. Annu Rev Nutr. 2010 Aug 21;30:173-99. doi: 10.1146/annurev.nutr.012809.104755. PubMed 20420526 ↗
  • Leber B, Tripolt NJ, Blattl D, Eder M, Wascher TC, Pieber TR, Stauber R, Sourij H, Oettl K, Stadlbauer V. The influence of probiotic supplementation on gut permeability in patients with metabolic syndrome: an open label, randomized pilot study. Eur J Clin Nutr. 2012 Oct;66(10):1110-5. doi: 10.1038/ejcn.2012.103. Epub 2012 Aug 8. PubMed 22872030 ↗
  • Cani PD, Bibiloni R, Knauf C, Waget A, Neyrinck AM, Delzenne NM, Burcelin R. Changes in gut microbiota control metabolic endotoxemia-induced inflammation in high-fat diet-induced obesity and diabetes in mice. Diabetes. 2008 Jun;57(6):1470-81. doi: 10.2337/db07-1403. Epub 2008 Feb 27. PubMed 18305141 ↗
  • Sugahara H, Odamaki T, Fukuda S, Kato T, Xiao JZ, Abe F, Kikuchi J, Ohno H. Probiotic Bifidobacterium longum alters gut luminal metabolism through modification of the gut microbial community. Sci Rep. 2015 Aug 28;5:13548. doi: 10.1038/srep13548. PubMed 26315217 ↗
  • Rizzardini G, Eskesen D, Calder PC, Capetti A, Jespersen L, Clerici M. Evaluation of the immune benefits of two probiotic strains Bifidobacterium animalis ssp. lactis, BB-12(R) and Lactobacillus paracasei ssp. paracasei, L. casei 431(R) in an influenza vaccination model: a randomised, double-blind, placebo-controlled study. Br J Nutr. 2012 Mar;107(6):876-84. doi: 10.1017/S000711451100420X. Epub 2011 Sep 7. PubMed 21899798 ↗
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Jun 2018 (actual). Primary completion is estimated for Oct 2022, 52 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 13, 2017
First posted
Feb 1, 2018
StartActual
Jun 29, 2018
Primary completionEst.
Oct 2022
CompletionEst.
Dec 2022
Last update
Dec 14, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 14, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03418857
Collaborators
United States Department of Agriculture (USDA)
Responsible party
Connie J Rogers (Associate Professor of Nutritional Sciences, Penn State University) — Principal investigator
First posted
Feb 1, 2018
Start date
Jun 29, 2018
Primary completion
Oct 2022 (estimated)
Completion
Dec 2022 (estimated)
Last update
Dec 14, 2021

Study contacts

Connie J Rogers, PhD, MPH
Contact
cjr102@psu.edu
814 867 3716

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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