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Zhao M, Liang X, Meng Y, Lu H, Lin K, Gong P, Liu T, Yi H, Pan J, Zhang Y, Zhang Z, Zhang L. Probiotics induce intestinal IgA secretion in weanling mice potentially through promoting intestinal APRIL expression and modulating the gut microbiota composition. Food Funct 2024; 15:4862-4873. [PMID: 38587236 DOI: 10.1039/d4fo00962b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Intestinal infections are strongly associated with infant mortality, and intestinal immunoglobulin A (IgA) is important to protect infants from intestinal infections after weaning. This study aims to screen probiotics that can promote the production of intestinal IgA after weaning and further explore their potential mechanisms of action. In this study, probiotics promoting intestinal IgA production were screened in weanling mouse models. The results showed that oral administration of Bifidobacterium bifidum (B. bifidum) FL228.1 and Bifidobacterium bifidum (B. bifidum) FL276.1 significantly enhanced IgA levels in the small intestine and upregulated the expression of a proliferation-inducing ligand (APRIL) and its upstream regulatory factor toll-like receptor 4 (TLR4). Furthermore, B. bifidum FL228.1 upregulated the relative abundance of Lactobacillus, while B. bifidum FL276.1 increased the relative abundance of Marvinbryantia and decreased Mucispirillum, further elevating intestinal IgA levels. In summary, B. bifidum FL228.1 and B. bifidum FL276.1 can induce IgA production in the intestinal tract of weanling mice by promoting intestinal APRIL expression and mediating changes in the gut microbiota, thus playing a significant role in enhancing local intestinal immunity in infants.
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Affiliation(s)
- Maozhen Zhao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China.
| | - Xi Liang
- College of Public Health, Qingdao University, Qingdao, 266000, China
| | - Yang Meng
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China.
| | - Haiyan Lu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China.
| | - Kai Lin
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China.
| | - Pimin Gong
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China.
| | - Tongjie Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China.
| | - Huaxi Yi
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China.
| | - Jiancun Pan
- Heilongjiang Feihe Dairy Co., Ltd., Qiqihar, 161000, China
| | - Yongjiu Zhang
- Heilongjiang Feihe Dairy Co., Ltd., Qiqihar, 161000, China
| | - Zhe Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China.
| | - Lanwei Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China.
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2
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Luo M, Sun J, Li S, Wei L, Sun R, Feng X, Zhang H, Chen T, Xi Q, Zhang Y, Qi Q. Protective effect of Enterococcus faecium against ethanol-induced gastric injury via extracellular vesicles. Microbiol Spectr 2024; 12:e0389423. [PMID: 38488394 PMCID: PMC10986489 DOI: 10.1128/spectrum.03894-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 03/04/2024] [Indexed: 04/06/2024] Open
Abstract
Recently, Enterococcus has been shown to have gastric protective functions, and the mechanisms by which Enterococcus modulates gastric function are still being investigated. Herein, we investigated how Enterococcus faecium (Efm) and E. faecium-derived extracellular vesicles (EVs) (EfmEVs) exert protective effect against ethanol-induced gastric injury by investigating the effect of EfmEVs on gastric mucosal ulcer scoring, histological lesion, mucosal glycoprotein production, acidity, anti-oxidative function, and inflammatory responses in rat. Pretreatment with Efm showed significant reduction of ethanol-induced gastric injury, as evidenced by the lowering of ulcer index, histological lesion, gastric pH, and inflammatory responses and the enhancement of mucosal glycoprotein production and anti-oxidative function. Further functional studies on three bioactive components [inactivated Efm, EfmEVs (EVs), and EV-free supernatants] of the bacterial culture showed that EVs are mostly responsible for the gastroprotective effect. Moreover, EV secretion is beneficial for the gastroprotective effect of Efm. Hence, EVs mediated the protective effect of Efm against ethanol-induced gastric injury by lowering inflammatory responses and enhancing anti-oxidative function and may be a potent anti-inflammatory and anti-oxidative strategy to alleviate hyperinflammatory gastrointestinal tract conditions.IMPORTANCEThis study indicated that Enterococcus faecium provided a protective effect against rat gastric injury, which involved improvement of the mucosal glycoprotein production, anti-oxidative function, and inflammatory responses. Furthermore, we confirmed that three bioactive components (inactivated Efm, extracellular vesicles, and EV-free supernatants) of E. faecium culture also contributed to the gastroprotective effect. Importantly, E. faecium-derived EVs showed an effective impact for the gastroprotective effect.
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Affiliation(s)
- Meiying Luo
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Junhang Sun
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Suqian Li
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Limin Wei
- Sanya Institute, Hainan Academy of Agricultural Sciences (Hainan Experimental Animal Research Center), Sanya, China
| | - Ruiping Sun
- Institute of Animal Science and Veterinary Medicine of Hainan Academy of Agricultural Sciences, Haikou, China
| | - Xin Feng
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Huihua Zhang
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Ting Chen
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Qianyun Xi
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Yongliang Zhang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Qien Qi
- School of Life Science and Engineering, Foshan University, Foshan, China
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3
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Chen D, Liang X, Lei J, Shen F, Yang F, Tang C. Enterococcus faecium inhibits NF-κB/NLRP3/IL-1β signaling pathway and antagonizes Salmonella-mediated inflammatory response. Future Microbiol 2024; 19:131-140. [PMID: 37994577 DOI: 10.2217/fmb-2022-0229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 05/12/2023] [Indexed: 11/24/2023] Open
Abstract
Aim: This study explored the protective effect of Enterococcus faecium as a probiotic against Salmonella typhimurium infection. Materials & methods: The protective role of E. faecium against tissue damage by S. typhimurium infection and the expression of inflammatory cytokines and tight junction proteins were detected by histological observation, real-time quantitative PCR and immunohistochemical methods. Results: E. faecium demonstrated a regulatory function that affected the expression of Claudin-1 and enhanced tight junctions, suppressed the NF-κB/NLRP3/IL-1β signaling pathway and reduced the release of IL-6, TNF-α, IFN-γ, TLR4 and MYD88 and inflammatory damage to tissues by S. typhimurium in the duodenum, cecum and colon of mice. Conclusion: E. faecium antagonized S. Typhimurium alleviating inflammatory injury in mice through the NF-κB/NLRP3/IL-1β signaling pathway.
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Affiliation(s)
- Dechun Chen
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, 610041, China
- Key Laboratory of Qinghai, Tibetan Plateau Animal Genetic Resource Reservation & Utilization (Southwest University for Nationalities), Ministry of Education, Chengdu, 610041, China
| | - Xiaodong Liang
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, 610041, China
| | - Jiangying Lei
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, 610041, China
| | - Fanyu Shen
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, 610041, China
| | - Falong Yang
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, 610041, China
- Key Laboratory of Qinghai, Tibetan Plateau Animal Genetic Resource Reservation & Utilization (Southwest University for Nationalities), Ministry of Education, Chengdu, 610041, China
| | - Cheng Tang
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, 610041, China
- Key Laboratory of Qinghai, Tibetan Plateau Animal Genetic Resource Reservation & Utilization (Southwest University for Nationalities), Ministry of Education, Chengdu, 610041, China
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4
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Cao Y, Zhang S, Tang L, Chen Y, Jiang S, Liu L, Gao X. Exploring the effects of Qijiao Shengbai capsule on leukopenic mice from the perspective of intestinbased on metabolomics and 16S rRNA sequencing. Heliyon 2023; 9:e19949. [PMID: 37810141 PMCID: PMC10559567 DOI: 10.1016/j.heliyon.2023.e19949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/06/2023] [Accepted: 09/06/2023] [Indexed: 10/10/2023] Open
Abstract
Qijiao Shengbai capsule (QJSB) is formulated according to the traditional Chinese medicine formula, its function is to nourish Qi and blood, improve the body's immunity. Leukopenia has been treated with it in clinical settings. However, the mechanism of leukopenia from the perspective of intestinal tract has not been reported. This study combined metabolomics and 16S rRNA sequencing technologies to investigate the mechanism of QJSB on leukopenia from the intestine. As a result of cyclophosphamide induction in mice, the results demonstrated that QJSB may greatly increase the quantity of peripheral leukocytes (including neutrophils). Meanwhile, QJSB had a restorative effect on the colon of leukopenic mice; it also increased the level of IL-2, IL-6 and G-CSF in the intestine, further enhancing the immunity and hematopoietic function of mice. Metabolic studies showed that QJSB altered 27 metabolites, most notably amino acid metabolism. In addition, QJSB had a positive regulatory effect on the intestinal microbiota, and could alter community composition by improving the diversity and abundance of the intestinal microbial, which mainly involved 6 related bacterial groups, and primarily regulates three associated SCFAs (acetic acid, butyrate acid and valeric acid). Therefore, this study suggests that QJSB can improve hematopoietic function, enhance the immune system, relieve leucopenia and improve the gut in leucopenic mice by modulating metabolic response pathways, fecal metabolites and intestinal microbiota.
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Affiliation(s)
- Yu Cao
- State Key Laboratory of Functions and Applications of Medicinal Plants and School of Pharmacy, Guizhou Medical University, Guiyang 550025, China
- Center of Microbiology and Biochemical Pharmaceutical Engineering, Guizhou Medical University, Guiyang 550025, China
| | - Shuo Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants and School of Pharmacy, Guizhou Medical University, Guiyang 550025, China
- Experimental Animal Center of Guizhou Medical University, Guiyang 550025, China
| | - Li Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants and School of Pharmacy, Guizhou Medical University, Guiyang 550025, China
- Center of Microbiology and Biochemical Pharmaceutical Engineering, Guizhou Medical University, Guiyang 550025, China
| | - Yixuan Chen
- State Key Laboratory of Functions and Applications of Medicinal Plants and School of Pharmacy, Guizhou Medical University, Guiyang 550025, China
- Center of Microbiology and Biochemical Pharmaceutical Engineering, Guizhou Medical University, Guiyang 550025, China
| | - Siyue Jiang
- State Key Laboratory of Functions and Applications of Medicinal Plants and School of Pharmacy, Guizhou Medical University, Guiyang 550025, China
- Center of Microbiology and Biochemical Pharmaceutical Engineering, Guizhou Medical University, Guiyang 550025, China
| | - Li Liu
- Guizhou Hanfang Pharmaceutical Co., Ltd., Guiyang 550002, China
| | - Xiuli Gao
- State Key Laboratory of Functions and Applications of Medicinal Plants and School of Pharmacy, Guizhou Medical University, Guiyang 550025, China
- Center of Microbiology and Biochemical Pharmaceutical Engineering, Guizhou Medical University, Guiyang 550025, China
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5
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Nissen L, Aniballi C, Casciano F, Elmi A, Ventrella D, Zannoni A, Gianotti A, Bacci ML. Maternal amoxicillin affects piglets colon microbiota: microbial ecology and metabolomics in a gut model. Appl Microbiol Biotechnol 2022; 106:7595-7614. [PMID: 36239764 PMCID: PMC9666337 DOI: 10.1007/s00253-022-12223-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/24/2022]
Abstract
Abstract The first weeks of life represent a crucial stage for microbial colonization of the piglets’ gastrointestinal tract. Newborns’ microbiota is unstable and easily subject to changes under stimuli or insults. Nonetheless, the administration of antibiotics to the sow is still considered as common practice in intensive farming for pathological conditions in the postpartum. Therefore, transfer of antibiotic residues through milk may occurs, affecting the piglets’ colon microbiota. In this study, we aimed to extend the knowledge on antibiotic transfer through milk, employing an in vitro dedicated piglet colon model (MICODE—Multi Unit In vitro Colon Model). The authors’ focus was set on the shifts of the piglets’ microbiota composition microbiomics (16S r-DNA MiSeq and qPCR—quantitative polymerase chain reaction) and on the production of microbial metabolites (SPME GC/MS—solid phase micro-extraction gas chromatography/mass spectrometry) in response to milk with different concentrations of amoxicillin. The results showed an effective influence of amoxicillin in piglets’ microbiota and metabolites production; however, without altering the overall biodiversity. The scenario is that of a limitation of pathogens and opportunistic taxa, e.g., Staphylococcaceae and Enterobacteriaceae, but also a limitation of commensal dominant Lactobacillaceae, a reduction in commensal Ruminococcaceae and a depletion in beneficial Bifidobactericeae. Lastly, an incremental growth of resistant species, such as Enterococcaceae or Clostridiaceae, was observed. To the authors’ knowledge, this study is the first evaluating the impact of antibiotic residues towards the piglets’ colon microbiota in an in vitro model, opening the way to include such approach in a pipeline of experiments where a reduced number of animals for testing is employed. Key points • Piglet colon model to study antibiotic transfer through milk. • MICODE resulted a robust and versatile in vitro gut model. • Towards the “3Rs” Principles to replace, reduce and refine the use of animals used for scientific purposes (Directive 2010/63/UE). Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1007/s00253-022-12223-3.
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Affiliation(s)
- Lorenzo Nissen
- Department of Agricultural and Food Sciences (DISTAL), Alma Mater Studiorum University of Bologna: Universita Di Bologna, P.za Goidanich 60, 47521, Cesena, Italy.,Interdepartmental Centre of Agri-Food Industrial Research (CIRI-AGRO), Alma Mater Studiorum University of Bologna: Universita Di Bologna, Via Q. Bucci 336, 47521, Cesena, Italy
| | - Camilla Aniballi
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna: Universita Di Bologna, via Tolara di Sopra 50, 40064, Ozzano dell'Emilia (BO), Italy
| | - Flavia Casciano
- Department of Agricultural and Food Sciences (DISTAL), Alma Mater Studiorum University of Bologna: Universita Di Bologna, P.za Goidanich 60, 47521, Cesena, Italy
| | - Alberto Elmi
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna: Universita Di Bologna, via Tolara di Sopra 50, 40064, Ozzano dell'Emilia (BO), Italy
| | - Domenico Ventrella
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna: Universita Di Bologna, via Tolara di Sopra 50, 40064, Ozzano dell'Emilia (BO), Italy.
| | - Augusta Zannoni
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna: Universita Di Bologna, via Tolara di Sopra 50, 40064, Ozzano dell'Emilia (BO), Italy.,Health Sciences and Technologies-Interdepartmental Center for Industrial Research (CIRI-SDV), Alma Mater Studiorum University of Bologna: Universita Di Bologna, 40126, Bologna, Italy
| | - Andrea Gianotti
- Department of Agricultural and Food Sciences (DISTAL), Alma Mater Studiorum University of Bologna: Universita Di Bologna, P.za Goidanich 60, 47521, Cesena, Italy.,Interdepartmental Centre of Agri-Food Industrial Research (CIRI-AGRO), Alma Mater Studiorum University of Bologna: Universita Di Bologna, Via Q. Bucci 336, 47521, Cesena, Italy
| | - Maria Laura Bacci
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna: Universita Di Bologna, via Tolara di Sopra 50, 40064, Ozzano dell'Emilia (BO), Italy.,Health Sciences and Technologies-Interdepartmental Center for Industrial Research (CIRI-SDV), Alma Mater Studiorum University of Bologna: Universita Di Bologna, 40126, Bologna, Italy
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Role of Lipoteichoic Acid from the Genus Apilactobacillus in Inducing a Strong IgA Response. Appl Environ Microbiol 2022; 88:e0019022. [PMID: 35380450 DOI: 10.1128/aem.00190-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Lactic acid bacterium-containing fermentates provide beneficial health effects by regulating the immune response. A naturally fermented vegetable beverage, a traditional Japanese food, reportedly provides health benefits; however, the beneficial function of its bacteria has not been clarified. Apilactobacillus kosoi is the predominant lactic acid bacterium in the beverage. Using murine Peyer's patch cells, we compared the immunoglobulin A (IgA)-inducing activity of A. kosoi 10HT to those of 29 other species of lactic acid bacteria and found that species belonging to the genus Apilactobacillus (A. kosoi 10HT, A. apinorum JCM30765T, and A. kunkeei JCM16173T) possessed significantly higher activity than the others. Thereafter, lipoteichoic acids (LTAs), important immunostimulatory molecules of Gram-positive bacteria, were purified from the three Apilactobacillus species, and their IgA-inducing activity was compared to those of LTAs from Lactiplantibacillus plantarum JCM1149T and a probiotic strain, Lacticaseibacillus rhamnosus GG. The results revealed that LTAs from Apilactobacillus species had significantly higher activity than others. We also compared the LTA structure of A. kosoi 10HT with that of L. plantarum JCM1149T and L. rhamnosus GG. Although d-alanine or both d-alanine and carbohydrate residues were substituents of free hydroxyl groups in the polyglycerol phosphate structure in LTAs from strains JCM1149T and GG, d-alanine residues were not found in LTA from strain 10HT by 1H nuclear magnetic resonance (NMR) analysis. Matrix-assisted laser desorption ionization-time-of-flight mass spectrometry (MALDI-TOF MS) analysis of the glycolipid structure of LTA revealed that LTA from strain 10HT contained dihexosyl glycerol, whereas trihexosyl glycerol was detected in LTAs from other strains. These structural differences may be related to differences in IgA-inducing activity. IMPORTANCE The components of lactic acid bacteria that exert immunostimulatory effects are of increasing interest for therapeutic and prophylactic options, such as alternatives to antibiotics, cognitive enhancements, and vaccine adjuvants. LTAs act as immunostimulatory molecules in the host innate immune system by interacting with pattern recognition receptors. However, as LTA structures differ among species, detailed knowledge of the structure-function relationship for immunostimulatory effects is required. Comparisons of the IgA-inducing activity of LTAs have demonstrated that LTAs from the genus Apilactobacillus possess distinctive activities to stimulate mucosal immunity. The first analysis of the LTA structure from the genus Apilactobacillus suggests that it differs from structures of LTAs of related species of lactic acid bacteria. This knowledge is expected to aid in the development of functional foods containing lactic acid bacteria and pharmaceutical applications of immunostimulatory molecules from lactic acid bacteria.
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Boussamet L, Rajoka MSR, Berthelot L. Microbiota, IgA and Multiple Sclerosis. Microorganisms 2022; 10:microorganisms10030617. [PMID: 35336190 PMCID: PMC8954136 DOI: 10.3390/microorganisms10030617] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/11/2022] [Accepted: 03/11/2022] [Indexed: 12/16/2022] Open
Abstract
Multiple sclerosis (MS) is a neuroinflammatory disease characterized by immune cell infiltration in the central nervous system and destruction of myelin sheaths. Alterations of gut bacteria abundances are present in MS patients. In mouse models of neuroinflammation, depletion of microbiota results in amelioration of symptoms, and gavage with MS patient microbiota exacerbates the disease and inflammation via Th17 cells. On the other hand, depletion of B cells using anti-CD20 is an efficient therapy in MS, and growing evidence shows an important deleterious role of B cells in MS pathology. However, the failure of TACI-Ig treatment in MS highlighted the potential regulatory role of plasma cells. The mechanism was recently demonstrated involving IgA+ plasma cells, specific for gut microbiota and producing IL-10. IgA-coated bacteria in MS patient gut exhibit also modifications. We will focus our review on IgA interactions with gut microbiota and IgA+ B cells in MS. These recent data emphasize new pathways of neuroinflammation regulation in MS.
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Affiliation(s)
- Léo Boussamet
- Centre for Research in Transplantation and Translation Immunology, Nantes Université, Inserm, CR2TI UMR, 1064 Nantes, France;
| | - Muhammad Shahid Riaz Rajoka
- Laboratory of Animal Food Function, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan;
| | - Laureline Berthelot
- Centre for Research in Transplantation and Translation Immunology, Nantes Université, Inserm, CR2TI UMR, 1064 Nantes, France;
- Correspondence:
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8
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Ota T, Ishikawa T, Sakakida T, Endo Y, Matsumura S, Yoshida J, Hirai Y, Mizushima K, Oka K, Doi T, Okayama T, Inoue K, Kamada K, Uchiyama K, Takagi T, Konishi H, Naito Y, Itoh Y. Treatment with broad-spectrum antibiotics upregulates Sglt1 and induces small intestinal villous hyperplasia in mice. J Clin Biochem Nutr 2022; 70:21-27. [PMID: 35068677 PMCID: PMC8764108 DOI: 10.3164/jcbn.21-42] [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: 04/02/2021] [Accepted: 06/02/2021] [Indexed: 11/22/2022] Open
Abstract
Although extensive evidence indicates that the gut microbiota plays a crucial role in regulating glucose homeostasis, the exact regulatory mechanism remains unclear. This study aimed to investigate the effect of broad-spectrum antibiotics on the expression of glucose transporters, histomorphology of the small intestine, and glucose metabolism in mice. C57BL/6 mice were administered drinking water with or without a broad-spectrum antibiotic combination for 4 weeks. Thereafter, an oral glucose tolerance test was performed. Body weight, small intestine histopathology, mRNA levels of glucose transporters (SGLT1 and GLUT2) and intestinal transcription factors (CDX1 and CDX2) were evaluated. SGLT1 and CDX1 were upregulated in the small intestine upon antibiotic administration compared with that in the control group. The height and surface area of the jejunal villi were significantly higher upon antibiotic administration than in the control group. Fasting glucose levels were significantly higher upon antibiotic administration than in the control group. The present results indicate that treatment with broad-spectrum antibiotics upregulates SGLT1 and CDX1 and induces hyperplasia in the small intestine, thus increasing fasting blood glucose levels. Our results further the current understanding of the effects of broad-spectrum antibiotics on the gut microbiota and glucose homeostasis that may have future clinical implications.
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Affiliation(s)
- Takayuki Ota
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Takeshi Ishikawa
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Tomoki Sakakida
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Yuki Endo
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Shinya Matsumura
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Juichirou Yoshida
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Yasuko Hirai
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Katsura Mizushima
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Kaname Oka
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Toshifumi Doi
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Tetsuya Okayama
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Ken Inoue
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Kazuhiro Kamada
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Kazuhiko Uchiyama
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Tomohisa Takagi
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Hideyuki Konishi
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Yuji Naito
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
| | - Yoshito Itoh
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
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