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Oana K, Shimizu K, Takada T, Makino H, Yamazaki M, Katto M, Ando M, Kurakawa T, Oishi K. Manipulating the growth environment through co-culture to enhance stress tolerance and viability of probiotic strains in the gastrointestinal tract. Appl Environ Microbiol 2023; 89:e0150223. [PMID: 38019024 PMCID: PMC10734474 DOI: 10.1128/aem.01502-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 10/13/2023] [Indexed: 11/30/2023] Open
Abstract
IMPORTANCE The viability of probiotics in the human gastrointestinal tract is important, as some reports indicate that the health benefits of live bacteria are greater than those of dead ones. Therefore, the higher the viability of the probiotic strain, the better it may be. However, probiotic strains lose their viability due to gastrointestinal stress such as gastric acid and bile. This study provides an example of the use of co-culture or pH-controlled monoculture, which uses more stringent conditions (lower pH) than normal monoculture to produce probiotic strains that are more resistant to gastrointestinal stress. In addition, co-cultured beverages showed higher viability of the probiotic strain in the human gastrointestinal tract than monocultured beverages in our human study.
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Affiliation(s)
- Kosuke Oana
- Basic Research Department, Yakult Central Institute, Tokyo, Japan
| | - Kensuke Shimizu
- Basic Research Department, Yakult Central Institute, Tokyo, Japan
| | - Toshihiko Takada
- Basic Research Department, Yakult Central Institute, Tokyo, Japan
| | - Hiroshi Makino
- Food Research Department, Yakult Central Institute, Tokyo, Japan
| | - Mikiko Yamazaki
- Food Research Department, Yakult Central Institute, Tokyo, Japan
| | - Miyuki Katto
- Basic Research Department, Yakult Central Institute, Tokyo, Japan
| | - Minoru Ando
- Safety Research Department, Yakult Central Institute, Tokyo, Japan
| | - Takashi Kurakawa
- Basic Research Department, Yakult Central Institute, Tokyo, Japan
| | - Kenji Oishi
- Research Management Center, Yakult Central Institute, Tokyo, Japan
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2
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Zaccaria E, Klaassen T, Alleleyn AME, Boekhorst J, Smokvina T, Kleerebezem M, Troost FJ. Endogenous small intestinal microbiome determinants of transient colonisation efficiency by bacteria from fermented dairy products: a randomised controlled trial. MICROBIOME 2023; 11:43. [PMID: 36879297 PMCID: PMC9990280 DOI: 10.1186/s40168-023-01491-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND The effects of fermented food consumption on the small intestine microbiome and its role on host homeostasis are largely uncharacterised as our knowledge on intestinal microbiota relies mainly on faecal samples analysis. We investigated changes in small intestinal microbial composition and functionality, short chain fatty acid (SCFA) profiles, and on gastro-intestinal (GI) permeability in ileostomy subjects upon the consumption of fermented milk products. RESULTS We report the results from a randomised, cross-over, explorative study where 16 ileostomy subjects underwent 3, 2-week intervention periods. In each period, they consumed either milk fermented by Lacticaseibacillus rhamnosus CNCM I-3690, or milk fermented by Streptococcus thermophilus CNCM I-1630 and Lactobacillus delbrueckii subsp. bulgaricus CNCM I-1519, or a chemically acidified milk (placebo) daily. We performed metataxonomic, metatranscriptomic analysis, and SCFA profiling of ileostomy effluents as well as a sugar permeability test to investigate the microbiome impact of these interventions and their potential effect on mucosal barrier function. Consumption of the intervention products impacted the overall small intestinal microbiome composition and functionality, mainly due to the introduction of the product-derived bacteria that reach in several samples 50% of the total microbial community. The interventions did not affect the SCFA levels in ileostoma effluent, or gastro-intestinal permeability and the effects on the endogenous microbial community were negligible. The impact on microbiome composition was highly personalised, and we identified the poorly characterised bacterial family, Peptostreptococcaceae, to be positively associated with a low abundance of the ingested bacteria. Activity profiling of the microbiota revealed that carbon- versus amino acid-derived energy metabolism of the endogenous microbiome could be responsible for the individual-specific intervention effects on the small intestine microbiome composition and function, reflected also on urine microbial metabolites generated through proteolytic fermentation. CONCLUSIONS The ingested bacteria are the main drivers of the intervention effect on the small intestinal microbiota composition. Their transient abundance level is highly personalised and influenced by the energy metabolism of the ecosystem that is reflected by its microbial composition ( http://www. CLINICALTRIALS gov , ID NCT NCT02920294). Video Abstract.
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Affiliation(s)
- Edoardo Zaccaria
- Host Microbe Interactomics Group, Wageningen University & Research, De Elst 1, 6708WD, Wageningen, The Netherlands
- Food Innovation and Health, Center for Healthy Eating and Food Innovation, Maastricht University, Venlo, 5911AA, The Netherlands
| | - Tim Klaassen
- Food Innovation and Health, Center for Healthy Eating and Food Innovation, Maastricht University, Venlo, 5911AA, The Netherlands
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, P.O. Box 5800, 6202AZ, Maastricht, The Netherlands
| | - Annick M E Alleleyn
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, P.O. Box 5800, 6202AZ, Maastricht, The Netherlands
| | - Jos Boekhorst
- Host Microbe Interactomics Group, Wageningen University & Research, De Elst 1, 6708WD, Wageningen, The Netherlands
| | - Tamara Smokvina
- Danone Nutricia Research, Av. De la Vauve, 91767, Palaiseau, France
| | - Michiel Kleerebezem
- Host Microbe Interactomics Group, Wageningen University & Research, De Elst 1, 6708WD, Wageningen, The Netherlands.
| | - Freddy J Troost
- Food Innovation and Health, Center for Healthy Eating and Food Innovation, Maastricht University, Venlo, 5911AA, The Netherlands
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, P.O. Box 5800, 6202AZ, Maastricht, The Netherlands
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3
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Zaccaria E, Klaassen T, Alleleyn AM, Boekhorst J, Chervaux C, Smokvina T, Troost FJ, Kleerebezem M. L. rhamnosus CNCM I-3690 survival, adaptation, and small bowel microbiome impact in human. Gut Microbes 2023; 15:2244720. [PMID: 37589280 PMCID: PMC10438856 DOI: 10.1080/19490976.2023.2244720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/05/2023] [Accepted: 08/01/2023] [Indexed: 08/18/2023] Open
Abstract
Fermented foods and beverages are a significant source of dietary bacteria that enter the gastrointestinal (GI) tract. However, little is known about how these microbes survive and adapt to the small intestinal environment. Colony-forming units (CFU) enumeration and viability qPCR of Lacticaseibacillus rhamnosus CNCM I-3690 in the ileal effluent of 10 ileostomy subjects during 12-h post consumption of a dairy product fermented with this strain demonstrated the high level of survival of this strain during human small intestine passage. Metatranscriptome analyses revealed the in situ transcriptome of L. rhamnosus in the small intestine, which was contrasted with transcriptome data obtained from in vitro cultivation. These comparative analyses revealed substantial metabolic adaptations of L. rhamnosus during small intestine transit, including adjustments of carbohydrate metabolism, surface-protein expression, and translation machinery. The prominent presence of L. rhamnosus in the effluent samples did not elicit an appreciable effect on the composition of the endogenous small intestine microbiome, but significantly altered the ecosystem's overall activity profile, particularly of pathways associated with carbohydrate metabolism. Strikingly, two of the previously recognized gut-brain metabolic modules expressed in situ by L. rhamnosus (inositol degradation and glutamate synthesis II) are among the most dominantly enriched activities in the ecosystem's activity profile. This study establishes the survival capacity of L. rhamnosus in the human small intestine and highlights its functional adjustment in situ, which we postulate to play a role in the probiotic effects associated with this strain.
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Affiliation(s)
- Edoardo Zaccaria
- Host Microbe Interactomics Group, Wageningen University & Research, Wageningen, The Netherlands
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, Maastricht, The Netherlands
| | - Tim Klaassen
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, Maastricht, The Netherlands
- Food Innovation and Health, Department of Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Venlo, The Netherlands
| | - Annick M.E. Alleleyn
- Food Innovation and Health, Department of Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Venlo, The Netherlands
| | - Jos Boekhorst
- Host Microbe Interactomics Group, Wageningen University & Research, Wageningen, The Netherlands
| | | | - Tamara Smokvina
- Danone Nutricia Research, Centre Daniel Carasso, Palaiseau, France
| | - Freddy J. Troost
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, Maastricht, The Netherlands
| | - Michiel Kleerebezem
- Host Microbe Interactomics Group, Wageningen University & Research, Wageningen, The Netherlands
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4
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Sen A, Nishimura T, Yoshimoto S, Yoshida K, Gotoh A, Katoh T, Yoneda Y, Hashimoto T, Xiao JZ, Katayama T, Odamaki T. Comprehensive analysis of metabolites produced by co-cultivation of Bifidobacterium breve MCC1274 with human iPS-derived intestinal epithelial cells. Front Microbiol 2023; 14:1155438. [PMID: 37125172 PMCID: PMC10133457 DOI: 10.3389/fmicb.2023.1155438] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/23/2023] [Indexed: 05/02/2023] Open
Abstract
Examining how host cells affect metabolic behaviors of probiotics is pivotal to better understand the mechanisms underlying the probiotic efficacy in vivo. However, studies to elucidate the interaction between probiotics and host cells, such as intestinal epithelial cells, remain limited. Therefore, in this study, we performed a comprehensive metabolome analysis of a co-culture containing Bifidobacterium breve MCC1274 and induced pluripotent stem cells (iPS)-derived small intestinal-like cells. In the co-culture, we observed a significant increase in several amino acid metabolites, including indole-3-lactic acid (ILA) and phenyllactic acid (PLA). In accordance with the metabolic shift, the expression of genes involved in ILA synthesis, such as transaminase and tryptophan synthesis-related genes, was also elevated in B. breve MCC1274 cells. ILA production was enhanced in the presence of purines, which were possibly produced by intestinal epithelial cells (IECs). These findings suggest a synergistic action of probiotics and IECs, which may represent a molecular basis of host-probiotic interaction in vivo.
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Affiliation(s)
- Akira Sen
- Next Generation Science Institute, Morinaga Milk Industry Co., Ltd., Kanagawa, Japan
- *Correspondence: Akira Sen,
| | - Tatsuki Nishimura
- Next Generation Science Institute, Morinaga Milk Industry Co., Ltd., Kanagawa, Japan
| | - Shin Yoshimoto
- Next Generation Science Institute, Morinaga Milk Industry Co., Ltd., Kanagawa, Japan
| | - Keisuke Yoshida
- Next Generation Science Institute, Morinaga Milk Industry Co., Ltd., Kanagawa, Japan
| | - Aina Gotoh
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Toshihiko Katoh
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Yasuko Yoneda
- Technology Research Laboratory, Shimadzu Corp., Kyoto, Japan
| | | | - Jin-Zhong Xiao
- Next Generation Science Institute, Morinaga Milk Industry Co., Ltd., Kanagawa, Japan
| | - Takane Katayama
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Toshitaka Odamaki
- Next Generation Science Institute, Morinaga Milk Industry Co., Ltd., Kanagawa, Japan
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Nagara Y, Fujii D, Takada T, Sato-Yamazaki M, Odani T, Oishi K. Selective induction of human gut-associated acetogenic/butyrogenic microbiota based on specific microbial colonization of indigestible starch granules. THE ISME JOURNAL 2022; 16:1502-1511. [PMID: 35115640 PMCID: PMC9123178 DOI: 10.1038/s41396-022-01196-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 12/31/2021] [Accepted: 01/13/2022] [Indexed: 12/11/2022]
Abstract
Prediction of individualized responses is one of biggest challenges in dietary intervention to modulate human gut microbiota. Bacterial interspecies competition for dietary factors should underlie the inter-subject heterogeneity of microbial responses. Microscale localization of bacterial species around intestinal food structures could provide direct evidence for understanding this, however, little information is currently available. Here we analyzed human fecal sections and found multiple types of bacterial colonization of food structures. The most eminent one was dense and frequent colonization of starch granules by Bifidobacterium adolescentis. After intake of raw potato starch (pSt), B. adolescentis dramatically increased in every carrier of the species, accompanied by an increase in bifidobacterial metabolite acetate. In the other subjects, Eubacterium rectale and its metabolite butyrate increased, but it was suppressed in B. adolescentis carriers. A correlation analysis indicated the contribution of these species to respective metabolites. In vitro analyses of isolates of major gut bacterial species confirmed that these species are major colonizers of pSt and that B. adolescentis can colonize pSt even in the presence of the known starch granule-degrading bacterium Ruminococcus bromii. Collectively, we propose that specific binding of B. adolescentis or E. rectale to pSt selectively induces acetogenic or butyrogenic response of gut microbiota, where the former determines the response of the latter.
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Affiliation(s)
- Yusuke Nagara
- Microbiological Research Department, Yakult Central Institute, Kunitachi, Tokyo, Japan.
| | - Daichi Fujii
- Microbiological Research Department, Yakult Central Institute, Kunitachi, Tokyo, Japan
| | - Toshihiko Takada
- Microbiological Research Department, Yakult Central Institute, Kunitachi, Tokyo, Japan
| | - Mikiko Sato-Yamazaki
- Microbiological Research Department, Yakult Central Institute, Kunitachi, Tokyo, Japan
| | - Toru Odani
- Microbiological Research Department, Yakult Central Institute, Kunitachi, Tokyo, Japan
| | - Kenji Oishi
- Microbiological Research Department, Yakult Central Institute, Kunitachi, Tokyo, Japan
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6
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Wang C, Wei S, Liu B, Wang F, Lu Z, Jin M, Wang Y. Maternal consumption of a fermented diet protects offspring against intestinal inflammation by regulating the gut microbiota. Gut Microbes 2022; 14:2057779. [PMID: 35506256 PMCID: PMC9090288 DOI: 10.1080/19490976.2022.2057779] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The neonatal intestinal tract is immature and can be easily infected by pathogens causing inflammation. Maternal diet manipulation is a promising nutritional strategy to enhance the gut health of offspring. A fermented diet is a gut microbiota targeting diet containing live probiotics and their metabolites, which benefit the gut and overall health host. However, it remains unclear how a maternal fermented diet (MFD) affects neonatal intestinal inflammation. Here, in vivo and in vitro models together with multi-omics analysis were applied to investigate the impacts and the underlying mechanism through which an MFD prevents from gut inflammation in neonates. An MFD remarkably improved the performance of both sows and piglets and significantly altered the gut microbiome and milk metabolome of sows. In addition, the MFD significantly accelerated the maturation of the gut microbiota of neonates and increased the abundance of gut Lactobacillus and the microbial functions of amino acid-related enzymes and glucose metabolism on the weaning day. Notably, the MFD reduced susceptibility to colonic inflammation in offspring. The fecal microbiota of sows was then transplanted into mouse dams and it was found that the mouse dams and pups in the MFD group alleviated the LPS-induced decrease in gut Lactobacillus abundance and barrier injury. Milk L-glutamine (GLN) and gut Lactobacillus reuteri (LR) were found as two of the main MFD-induced sow effectors that contributed to the gut health of piglets. The properties of LR and GLN in modulating gut microbiota and alleviating colonic inflammation by inhibiting the phosphorylation of p38 and JNK and activation of Caspase 3 were further verified. These findings provide the first data revealing that an MFD drives neonate gut microbiota development and ameliorates the colonic inflammation by regulating the gut microbiota. This fundamental evidence might provide references for modulating maternal nutrition to enhance early-life gut health and prevent gut inflammation.
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Affiliation(s)
- Cheng Wang
- National Engineering Laboratory for Feed Safety and Pollution Prevention and Controlling; Key Laboratory of Molecular Animal Nutrition, Ministry of Education; Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs; Key Laboratory of Animal Feed and Nutrition of Zhejiang Province; Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, 310058, PR China
| | - Siyu Wei
- National Engineering Laboratory for Feed Safety and Pollution Prevention and Controlling; Key Laboratory of Molecular Animal Nutrition, Ministry of Education; Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs; Key Laboratory of Animal Feed and Nutrition of Zhejiang Province; Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, 310058, PR China
| | - Bojing Liu
- National Engineering Laboratory for Feed Safety and Pollution Prevention and Controlling; Key Laboratory of Molecular Animal Nutrition, Ministry of Education; Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs; Key Laboratory of Animal Feed and Nutrition of Zhejiang Province; Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, 310058, PR China
| | - Fengqin Wang
- National Engineering Laboratory for Feed Safety and Pollution Prevention and Controlling; Key Laboratory of Molecular Animal Nutrition, Ministry of Education; Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs; Key Laboratory of Animal Feed and Nutrition of Zhejiang Province; Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, 310058, PR China
| | - Zeqing Lu
- National Engineering Laboratory for Feed Safety and Pollution Prevention and Controlling; Key Laboratory of Molecular Animal Nutrition, Ministry of Education; Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs; Key Laboratory of Animal Feed and Nutrition of Zhejiang Province; Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, 310058, PR China
| | - Mingliang Jin
- National Engineering Laboratory for Feed Safety and Pollution Prevention and Controlling; Key Laboratory of Molecular Animal Nutrition, Ministry of Education; Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs; Key Laboratory of Animal Feed and Nutrition of Zhejiang Province; Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, 310058, PR China
| | - Yizhen Wang
- National Engineering Laboratory for Feed Safety and Pollution Prevention and Controlling; Key Laboratory of Molecular Animal Nutrition, Ministry of Education; Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs; Key Laboratory of Animal Feed and Nutrition of Zhejiang Province; Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, 310058, PR China,CONTACT Yizhen Wang National Engineering Laboratory for Feed Safety and Pollution Prevention and Controlling; Key Laboratory of Molecular Animal Nutrition, Ministry of Education; Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs; Key Laboratory of Animal Feed and Nutrition of Zhejiang Province; Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou310058, PR China
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7
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Chinda D, Takada T, Mikami T, Shimizu K, Oana K, Arai T, Akitaya K, Sakuraba H, Katto M, Nagara Y, Makino H, Fujii D, Oishi K, Fukuda S. Spatial distribution of live gut microbiota and bile acid metabolism in various parts of human large intestine. Sci Rep 2022; 12:3593. [PMID: 35246580 PMCID: PMC8897406 DOI: 10.1038/s41598-022-07594-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 02/18/2022] [Indexed: 11/09/2022] Open
Abstract
Gut microbiomics is based on analysis of both live and dead cells in the stool. However, to understand the ecology of gut microbiota and their symbiotic relationships with hosts, spatial distribution of live bacteria must be examined. Here, we analyzed the live composition of luminal microbiota (LM) and mucosa-associated microbiota (MAM) in the ascending and descending colons and the rectums of 10 healthy adults and compared it with the total composition. The abundance of Lachnospiraceae in live LM decreased along the gut length and was significantly lower than that in total LM. Contrastingly, the abundance of Bacteroidaceae and Bifidobacteriaceae in live LM was higher than that in total LM, suggesting differences in death rate during gut migration. Live Enterobacteriaceae levels in MAM were significantly higher in rectum than in the ascending and descending colons and in LM. High-performance liquid chromatographic analysis of luminal bile acids revealed that 7α-dehydroxylation occurred towards the rectum. In live LM where a bile acid-inducible gene could be detected, 7α-dehydroxylation rates were higher than those in the group without the gene. Overall, we showed differences in live bacteria composition among three gut sites and between LM and MAM, highlighting the importance of understanding their spatial distribution.
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Affiliation(s)
- Daisuke Chinda
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori, 036-8562, Japan. .,Division of Endoscopy, Hirosaki University Hospital, Hirosaki, Aomori, Japan.
| | - Toshihiko Takada
- Basic Research Department, Yakult Central Institute, Tokyo, Japan
| | - Tatsuya Mikami
- Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan
| | - Kensuke Shimizu
- Basic Research Department, Yakult Central Institute, Tokyo, Japan
| | - Kosuke Oana
- Basic Research Department, Yakult Central Institute, Tokyo, Japan
| | - Tetsu Arai
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori, 036-8562, Japan
| | - Kazuki Akitaya
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori, 036-8562, Japan
| | - Hirotake Sakuraba
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori, 036-8562, Japan
| | - Miyuki Katto
- Basic Research Department, Yakult Central Institute, Tokyo, Japan
| | - Yusuke Nagara
- Basic Research Department, Yakult Central Institute, Tokyo, Japan
| | - Hiroshi Makino
- Food Research Department, Yakult Central Institute, Tokyo, Japan
| | - Daichi Fujii
- Microbiological Research Department, Yakult Central Institute, Tokyo, Japan
| | - Kenji Oishi
- Basic Research Department, Yakult Central Institute, Tokyo, Japan
| | - Shinsaku Fukuda
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori, 036-8562, Japan
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8
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Hori T, Matsuda K, Oishi K. Probiotics: A Dietary Factor to Modulate the Gut Microbiome, Host Immune System, and Gut-Brain Interaction. Microorganisms 2020; 8:microorganisms8091401. [PMID: 32933067 PMCID: PMC7563712 DOI: 10.3390/microorganisms8091401] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/26/2020] [Accepted: 09/09/2020] [Indexed: 12/12/2022] Open
Abstract
Various benefits of probiotics to the host have been shown in numerous human clinical trials. These organisms have been proposed to act by improving the balance of the gut microbiota and enhancing the production of short-chain fatty acids, as well as by interacting with host cells in the gastrointestinal tract, including immune cells, nerve cells, and endocrine cells. Although the stimulation of host cells by probiotics and subsequent signaling have been explained by in vitro experiments and animal studies, there has been some skepticism as to whether probiotics can actually interact with host cells in the human gastrointestinal tract, where miscellaneous indigenous bacteria coexist. Most recently, it has been shown that the ileal microbiota in humans after consumption of a fermented milk is occupied by probiotics for several hours, indicating that there is adequate opportunity for the ingested strain to stimulate the host cells continuously over a period of time. As the dynamics of ingested probiotics in the human gastrointestinal tract become clearer, further progress in this research area is expected to elucidate their behavior within the tract, as well as the mechanism of their physiological effects on the host.
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