Cited by 107Probiotics and Fermented FoodsGut microbiota and healthReproductive tract infections research

Characterization of the anti-inflammatory Lactobacillus reuteri BM36301 and its probiotic benefits on aged mice

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Lee, Joon, Yang, Woo, Hostetler, Andrew, Schultz, Nathan, Suckow, Mark A., Stewart, Kay L., Kim, Daniel D., Kim, Hyung Soo·2016·BMC Microbiology

Abstract

BACKGROUND: The gut microbiota is playing more important roles in host immune regulation than was initially expected. Since many benefits of microbes are highly strain-specific and their mechanistic details remain largely elusive, further identification of new probiotic bacteria with immunoregulatory potentials is of great interest. RESULTS: We have screened our collection of probiotic lactic acid bacteria (LAB) for their efficacy in modulating host immune response. Some LAB are characterized by suppression of TNF-α induction when LAB culture supernatants are added to THP-1 cells, demonstrating the LAB's anti-inflammatory potential. These suppressive materials were not inactivated by heat or trypsin. On the other hand, treatment of THP-1 directly with live bacterial cells identified a group of pro-inflammatory LAB, which stimulated significant production of TNF-α. Among those, we chose the Lactobacillus reuteri BM36301 as an anti-inflammatory strain and the L. reuteri BM36304 as a pro-inflammatory strain, and further studied their in vivo effects. We supplied C57BL/6 mice with these bacteria in drinking water while feeding them a standard diet for 20 weeks. Interestingly, these L. reuteri strains evoked different consequences depending on the gender of the mice. That is, males treated with anti-inflammatory BM36301 experienced less weight gain and higher testosterone level; females treated with BM36301 maintained lower serum TNF-α as well as healthy skin with active folliculogenesis and hair growth. Furthermore, while males treated with pro-inflammatory BM36304 developed higher serum levels of TNF-α and insulin, in contrast females did not experience such effects from this bacteria strain. CONCLUSION: The L. reuteri BM36301 was selected as an anti-inflammatory strain in vitro. It helped mice maintain healthy conditions as they aged. These findings propose the L. reuteri BM36301 as a potential probiotic strain to improve various aspects of aging issues.

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  • In aging mice, L. reuteri supplementation resulted in larger testicles and increased serum testosterone compared to age-matched controls.

    “Further, aging mice supplemented with the probiotic bacterium L. reuteri had larger testicles and increased serum testosterone levels compared to their age-matched controls [237, 254].”

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Authors
Lee, J., Yang, W., Hostetler, A., Schultz, N., Suckow, M. A., Stewart, K. L., Kim, D. D., & Kim, H. S.
Affiliations
University of Notre Dame (US)
Corresponding author
  • Lee, Joon
  • Kim, Hyung Soo
Venue
BMC Microbiology
Published
2016-04-19
Volume
16
Issue
1
Pages
69-69
ISSN
1471-2180 (ISSN-L)
OpenAlex
W2339853403
Cited by
107
References
53
Citations by year
2026: 4 · 2025: 10 · 2024: 17 · 2023: 9 · 2022: 12 · 2021: 15 · 2020: 8 · 2019: 13 · 2018: 12 · 2017: 5 · 2016: 2
FWCI
13.43
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • BMC Microbiology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • California Institute of Technology
  • University of Notre Dame
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Immunology and Microbiology › Microbiology › Reproductive tract infections research
Keywords
Lactobacillus reuteri, probiotics, anti-inflammatory activity, lactic acid bacteria, TNF-α, THP-1 cells, gut microbiota, aging, sex differences, testosterone, skin health, insulin, immunomodulation
MeSH terms
Gastrointestinal Microbiome, Aging, Animals, Anti-Inflammatory Agents, Cell Line, Culture Media, Female, Humans, Male, Mice, Inbred C57BL, Sex Factors, Tumor Necrosis Factor-alpha, Up-Regulation, Probiotics, Mice, Limosilactobacillus reuteri

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