The Efficacy of Cholesterol-lowering Probiotic Lactobacillus Plantarum LPLDL® in Hypercholesterolemic Adults. (ProLoChol)

April 26, 2021 updated by: DR ADELE COSTABILE, University of Roehampton

The Cholesterol-lowering Efficacy of Probiotic Lactobacillus Plantarum ECGC 13110402 (LPLDL®) in Hypercholesterolemic Adults

Coronary heart disease (CHD) is one of the major causes of death and disability in industrialised countries. Results from several epidemiological and clinical studies indicate a positive correlation between elevated total serum cholesterol levels, mainly reflecting the LDL-cholesterol fraction, and risk of CHD. It is thought that a reduction in total plasma cholesterol levels in populations suffering from primary hypercholesterolemia (elevated cholesterol) can lower the incidence of coronary thrombosis. Currently, therefore there is extensive interest in the management of serum cholesterol and other blood lipids. Diet is viewed as a major influencing factor that can reduce levels. This is largely driven by the expense of drug therapy, the large numbers of individuals affected and unwanted side effects of such treatments. Dietary strategies for prevention of CHD implicate adherence to a low-fat/low-saturated fat diet. Although such diets may present an effective approach, they are difficult to maintain on a long-term basis and efficacy diminishes over time. As such, new approaches towards identification of other dietary means of reducing blood cholesterol levels have been evaluated. These include, among others, the use of probiotics. Probiotics are 'live microbial feed supplements that offer a benefit to health'. They are marketed as health or functional foods whereby they are ingested for their purported positive advantages in the digestive tract and/or systemic areas like the liver, vagina or bloodstream. The main goal of the study is to test the efficacy of the probiotic in degrading cholesterol as well as produce metabolites that interfere with its synthesis in the liver in adults with high cholesterol (>6mmol). The effect may also be partially ascribed to an enzymatic deconjugation of bile acids.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The aim of this human volunteer study is to establish the extent of extent of the cholesterol lowering potential of Lactobacillus plantarum ECGC 13110402 in 50 hypercholesterolaemic adults (35-70 years old).

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
16

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United Kingdom
    • UK
      • London, UK, United Kingdom, SW15 4JD
        • Health Sciences Research Centre, Life Sciences Department, University of Roehampton

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

35 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • males and females from 35 to 70 years of age
  • BMI 18.5 to 29.9 kg/m2
  • total cholesterol (TC) >6mmol/L.

Exclusion Criteria:

  • suffering from chronic gastrointestinal complaints (including chronic constipation, diarrhoea or Irritable Bowel Syndrome)
  • diabetes or anaemia
  • requirement to take long-term medications active on the gastrointestinal tract, treatment of cardio-vascular disease, or any other long-term medication
  • high blood cholesterol or use of cholesterol lowering drugs/ functional foods
  • history of drug or alcohol misuse or alcohol consumption exceeding 14 and 21 units/week for females and males respectively
  • those suffering with any allergies to medication or food
  • on weight-reducing diets.
  • Females planning pregnancy within six months from the start of the study, lactating, or have given birth within the preceding six months
  • use of antibiotics within six months preceding the study, participation in any probiotic, prebiotic or laxative study or intake of an experimental drug four weeks prior to the study start.
  • Individuals exercising > 16 744 kJ per week

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Experimental: L. plantarum ECGC 13110402 (LPLDL®)
Lactobacillus plantarum ECGC 13110402 (LPLDL®) equivalent to 4 x10^9 CFU (0.1 g) with the addition of filling carrier (0.12 g; 30% w/v maltodextrin and 5% w/v sucrose) as a capsular format (vegetable) to be consumed once a day, after lunch with 250mL of water.
Dietary supplement: Lactobacillus plantarum ECGC 13110402
The study will consist of two phases: a treatment period (12 weeks) with either the active or placebo and a wash-out period (4 weeks). Following a screening visit to ensure adherence to the inclusion criteria, the study will consist of a baseline, midpoint, endpoint (week 6 and 12, respectively) and washout visit (week 16).
Placebo Comparator: Placebo Comparator: Maltodextrin
Maltodextrin (an oligosaccharide without prebiotic effect) (0.12 g; 30% w/v maltodextrin and 5% w/v sucrose) as a capsular format (vegetable) to be consumed once a day, after lunch with 250mL of water.
Dietary supplement: Placebo Comparator: Maltodextrin
Please see intervention description above.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Cholesterol-lowering efficacy
Time Frame: from baseline to 6 and 12 weeks of the intervention
To test, in humans, whether the LPLDL® intervention lowers total cholesterol by a log change of min. 0.45 ± 0.4.
from baseline to 6 and 12 weeks of the intervention
Effect on the gut microbiota
Time Frame: from baseline to 6 and 12 weeks of the intervention
To determine the effect of LPLDL® on the faecal microbiota composition and microbial activity of the volunteers using DNA profiling from faeces (16s rRNA sequencing using Illumina MiSeq Platform and QIIME data analysis software).
from baseline to 6 and 12 weeks of the intervention
Effect on vitamin D absorption and ABOB
Time Frame: from baseline to 6 and 12 weeks of the intervention
To investigate the effect of LPLDL® on vitamin D absorption in the study population by measuring circulating vitamin D in blood using clinical chemistry and monitoring vitamin D intake from food diary.
from baseline to 6 and 12 weeks of the intervention
Effect on bile acid metabolism
Time Frame: from baseline to 6 and 12 weeks of the intervention
To assess any changes in bile acid metabolites and TMAO during the study trial using high performance liquid chromatography tandem mass spectrometry to analyse the urine samples.
from baseline to 6 and 12 weeks of the intervention

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Digestive symptoms
Time Frame: from baseline to 6 and 12 weeks of the intervention
Bristol diary form Bristol diary form.
from baseline to 6 and 12 weeks of the intervention
Dietary assessment
Time Frame: from baseline to 6 and 12 weeks of the intervention
To conduct an assessment of dietary intake in the study population using a validated four-day food diary and dietplan 7 dietary analysis software (Forestfield Ltd.)
from baseline to 6 and 12 weeks of the intervention

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Roehampton

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Adele Costabile, PhD, University of Roehampton

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
February 1, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 1, 2021

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 1, 2021

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
April 30, 2018

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 25, 2018

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 30, 2018

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 27, 2021

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 26, 2021

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • LSC 18/ 241

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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