Probiotic Intervention, Bile Acids and Lipid Metabolism Metabolic Profile in Healthy Overweight Subjects.

Summary

Moderate hypercholesterolemia, metabolic alterations derived from overweight or obesity, and consequently and their related cardiovascular risks can be reduced through changes in lifestyle. A growing body of evidence shows a relationship between hypercholesterolemia and dysfunction of the gut microbiota.

Gut microbiota is considered a keystone in maintaining the health condition of the host through multiple mechanisms affecting different metabolic processes, including lipid metabolism and cholesterol-related pathways. Bile acids (BA) are cholesterol-derived compounds synthesized in the liver and metabolized upon modification by gut bacteria once they reach the colon.

Conversely, BAs shape the composition and function of the intestinal microbiota. This mutual interplay between BAs and gut microbiota regulates many physiological processes, including the lipid, carbohydrate and energy metabolism of the host.

Previous studies based on Lactobacillus plantarum have shown 3 strains CECT 7527, 7528, and 7529 with the ability to adhere to the intestinal mucosa with very low toxicity, what makes them susceptible to be used as a probiotic. The lipid-lowering effect of the 3 bacteria strains was already evidenced in previous preclinical studies in animal models and clinical studies in hypercholesterolemic subjects. Up to now, however, little is known about the effects of the 3- combined Lactobacillus plantarum strains on levels and profile of bile acids in healthy overweight subjects, otherwise at low cardiovascular risk.

The aim of this study is to explore on the mechanism of action of a Lactobacillus plantarum mixture (CECT 7527, CECT 7528 and CECT 7529) and evaluate the effect of this probiotic formulation on BA profile as well as on plasma lipids and other related biomarkers when administered in a dose-dependent regime in a cohort of overweight subjects.

The probiotic product was administrated for 4 weeks with a weekly dose-regime of 2x, 3x, and 4x, respectively, in the second, third, and fourth week in relation to the first week. The effects were evaluated on: (1) level and profile of bile acids in plasma and feces, (2) plasma lipid/lipoprotein and fatty acid profile and (3) endocrine hormones, glucose metabolism and inflammatory markers in plasma.

Conditions

• Probiotic Intervention

Interventions

DIETARY_SUPPLEMENT

Probiotic preparation of three Lactobacillus plantarum strains (CECT 7527, CECT 7528, CECT 7529)

All subjects were submitted to 4 weeks intervention consisting on a dose-dependent regime of Lactobacillus plantarum AB-B (strains CECT 7527, CECT 7528, CECT 7529; AB-LIFE). Before starting the intervention period, all subjects were submitted to a 2-weeks run-in period. During the wash-in and intervention-periods, participants were instructed to maintain their habitual dietary habits and to continue their normal pattern of physical activity throughout the study period. Treatments during the intervention period were: Week 1: 1 capsule/day taken during breakfast; Week 2: 2 capsules / day at- breakfast; Week 3: 2 capsules at breakfast and 1 at dinner; Week 4: 2capsules at breakfast and 2 capsules at dinner. Each capsule contains 1.2x10\^9 cfu (colony forming units) in a 1: 1: 1 ratio of the three strains.

Sponsors & Collaborators

• AB Biotics, SA

  collaborator INDUSTRY

• Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau

  lead OTHER

Study Design

Allocation

NA

Purpose

BASIC_SCIENCE

Masking

NONE

Model

SINGLE_GROUP

Eligibility

Min Age

25 Years

Max Age

60 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2020-09-01

Primary Completion

2020-11-28

Completion

2022-02-21

Countries

• Spain

Study Locations