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van Zanten GC, Madsen AL, Yde CC, Krych L, Yeung N, Saarinen MT, Kot W, Jensen HM, Rasmussen MA, Ouwehand AC, Nielsen DS. Randomised, Placebo-Controlled Investigation of the Impact of Probiotic Consumption on Gut Microbiota Diversity and the Faecal Metabolome in Seniors. Microorganisms 2024; 12:796. [PMID: 38674741 PMCID: PMC11052279 DOI: 10.3390/microorganisms12040796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/05/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
Aging has been associated with a changed composition and function of the gut microbiota (GM). Here, we investigate the effects of the multi-strain probiotic HOWARU® Restore on GM composition and function in seniors. Ninety-eight healthy adult volunteers aged ≥75 years were enrolled in a randomised, double-blinded intervention (NCT02207140), where they received HOWARU Restore (1010 CFU) or the placebo daily for 24 weeks, with 45 volunteers from each group completing the intervention. Questionnaires monitoring the effects on gastro-intestinal discomfort and bowel movements were collected. Faecal samples for GM characterisation (qPCR, 16S rRNA gene amplicon sequencing) and metabolomics (GC-FID, 1H NMR) were collected at the baseline and after 24 weeks. In the probiotic group, self-reported gastro-intestinal discomfort in the form of flatulence was significantly decreased during the intervention. At the baseline, 151 'core species' (present in ≥95% of samples) were identified. Most core species belonged to the Lachnospiraceae and Ruminococcaceae families. Neither alpha diversity nor beta diversity or faecal metabolites was affected by probiotic intake. On the contrary, we observed high intra-individual GM stability, with 'individual' accounting for 72-75% of variation. In conclusion, 24 weeks of HOWARU Restore intake reduced gastro-intestinal discomfort in the form of flatulence in healthy seniors without significantly influencing GM composition or activity.
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Affiliation(s)
- Gabriella C. van Zanten
- Department of Food Science, University of Copenhagen, 1958 Frederiksberg, Denmark; (G.C.v.Z.); (A.L.M.); (L.K.); (M.A.R.); (D.S.N.)
| | - Anne Lundager Madsen
- Department of Food Science, University of Copenhagen, 1958 Frederiksberg, Denmark; (G.C.v.Z.); (A.L.M.); (L.K.); (M.A.R.); (D.S.N.)
| | - Christian C. Yde
- IFF Enabling Technologies, Brabrand, 8220 Aarhus, Denmark; (C.C.Y.); (H.M.J.)
| | - Lukasz Krych
- Department of Food Science, University of Copenhagen, 1958 Frederiksberg, Denmark; (G.C.v.Z.); (A.L.M.); (L.K.); (M.A.R.); (D.S.N.)
| | - Nicolas Yeung
- IFF Health, 02460 Kantvik, Finland; (N.Y.); (M.T.S.)
| | | | - Witold Kot
- Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg, Denmark;
| | - Henrik Max Jensen
- IFF Enabling Technologies, Brabrand, 8220 Aarhus, Denmark; (C.C.Y.); (H.M.J.)
| | - Morten A. Rasmussen
- Department of Food Science, University of Copenhagen, 1958 Frederiksberg, Denmark; (G.C.v.Z.); (A.L.M.); (L.K.); (M.A.R.); (D.S.N.)
- Copenhagen Studies on Asthma in Childhood, University of Copenhagen, 2820 Gentofte, Denmark
| | | | - Dennis S. Nielsen
- Department of Food Science, University of Copenhagen, 1958 Frederiksberg, Denmark; (G.C.v.Z.); (A.L.M.); (L.K.); (M.A.R.); (D.S.N.)
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