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Gutierrez A, Pucket B, Engevik MA. Bifidobacterium and the intestinal mucus layer. MICROBIOME RESEARCH REPORTS 2023; 2:36. [PMID: 38045921 PMCID: PMC10688832 DOI: 10.20517/mrr.2023.37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/21/2023] [Accepted: 09/13/2023] [Indexed: 12/05/2023]
Abstract
Bifidobacterium species are integral members of the human gut microbiota and these microbes have significant interactions with the intestinal mucus layer. This review delves into Bifidobacterium-mucus dynamics, shedding light on the multifaceted nature of this relationship. We cover conserved features of Bifidobacterium-mucus interactions, such as mucus adhesion and positive regulation of goblet cell and mucus production, as well as species and strain-specific attributes of mucus degradation. For each interface, we explore the molecular mechanisms underlying these interactions and their potential implications for human health. Notably, we emphasize the ability of Bifidobacterium species to positively influence the mucus layer, shedding light on its potential as a mucin-builder and a therapeutic agent for diseases associated with disrupted mucus barriers. By elucidating the complex interplay between Bifidobacterium and intestinal mucus, we aim to contribute to a deeper understanding of the gut microbiota-host interface and pave the way for novel therapeutic strategies.
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Affiliation(s)
- Alyssa Gutierrez
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Brenton Pucket
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Melinda A. Engevik
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
- Department of Microbiology & Immunology, Medical University of South Carolina, Charleston, SC 29425, USA
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Khodaii Z, Mardi S, Mardi P, Natanzi MM. Adjunctive role of Q10 with Ligilactobacillus salivarius, and Lactiplantibacillus plantarum probiotic Bacteria on the HEp-2 cells viability and adhesion of Streptococcus mutans. Front Cell Infect Microbiol 2023; 13:1053230. [PMID: 37187472 PMCID: PMC10175631 DOI: 10.3389/fcimb.2023.1053230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 04/11/2023] [Indexed: 05/17/2023] Open
Abstract
Objective Various studies have indicated the application of Coenzyme Q10 and probiotic bacteria such as Ligilactobacillus salivarius (L. salivarius) and Lactiplantibacillus plantarum (L. plantarum) in combating periodontal disease. Considering the positive effect of these two on oral health, and the destructive effect of S. mutans, in this study, we investigate the outcomes of the administration of probiotics and Q10 on infected HEp-2 cell viability and S. mutans adhesion in different settings. Methods A 3-week-old human epidermoid laryngeal (HEp-2) cell line was cultured and exposed to two different probiotics and 3 different doses of Q10 doses. Samples were contaminated by S. mutans immediately (therapeutic setting) and after 3 hours (preventive setting). Eventually, the viability of HEp-2 cells was investigated by MTT. Also, the number of adhered S. mutans was explored by direct and indirect adhesion assays. Results L. plantarum and L. salivarius protect epithelial cells against S. mutans in both therapeutic and preventive settings, albeit not fully. In contrast, Q10 completely preserves the viability of infected Her HEp-2 cells at all concentrations. The effects of the coexistence of Q10 and probiotics were not quite equal, among which L. salivarius and 5 μg of Q10 form the best results. The microscopic adherence assay of S. mutans revealed that samples containing Q10 had significantly lower adhesion of probiotics and S. mutans to HEp-2 cells. Similarly, plates containing L. salivarius with 5μg or L. plantarum with 1μg Q10 or sole presence of L. salivarius had the lowest S. mutans adherence among others. Also, L. salivarius with 5μg Q10 had one of the highest probiotic adherences. Conclusion In conclusion, co-administration of Q10 and probiotics especially in presence of L. salivarius with 5μg Q10 could have remarkable effects on HEp-2 cell viability, S. mutans, and probiotic adherence. Nevertheless, our study, for the first time, showed that Q10 might have an anti-bacterial activity by suppressing the adhesion of tested bacteria to HEp-2 cells. This hypothesis, if correct, suggests that due to their different mechanisms, co-prescription of Q10 and probiotics may lead to better clinical responses, especially in the mentiond dose.
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Affiliation(s)
- Zohreh Khodaii
- Dietary Supplements and Probiotic Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Shayan Mardi
- Student Research Committee, Arak University of Medical Sciences, Arak, Iran
| | - Parham Mardi
- Student Research Committee, Alborz University of Medical Sciences, Karaj, Iran
| | - Mahboobeh Mehrabani Natanzi
- Dietary Supplements and Probiotic Research Center, Alborz University of Medical Sciences, Karaj, Iran
- Evidence-based Phytotherapy And Complementary Medicine Research Center, Alborz University of Medical Sciences, Karaj, Iran
- *Correspondence: Mahboobeh Mehrabani Natanzi,
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Hanifeh M, Spillmann T, Huhtinen M, Sclivagnotis YS, Grönthal T, Hynönen U. Ex-Vivo Adhesion of Enterococcus faecalis and Enterococcus faecium to the Intestinal Mucosa of Healthy Beagles. Animals (Basel) 2021; 11:ani11113283. [PMID: 34828014 PMCID: PMC8614307 DOI: 10.3390/ani11113283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/12/2021] [Accepted: 11/12/2021] [Indexed: 12/19/2022] Open
Abstract
Some Enterococcus faecalis and E. faecium strains are used as probiotics or feed additives. Adherence to the intestinal mucosa is considered a crucial step for intestinal bacteria to colonize and further interact with the host epithelium and the immune system. In dogs, there are no studies investigating the adhesion of E. faecalis and E. faecium to paraffin-embedded intestinal mucosa. Therefore, we aimed to investigate the adhesion of E. faecalis and E. faecium to the intestinal mucosa of six healthy beagles using bacteria derived from dogs and chickens. In addition, we aimed to validate a method to test the adhesion of Alexa Fluor-labeled bacteria to paraffin-embedded canine intestinal mucosa. The results of our study show that both canine- and chicken-derived E. faecalis strains adhered significantly better than E. faecium to the duodenal mucosa of healthy beagles (p = 0.002). In addition, canine E. faecalis and E. faecium adhered in higher numbers to canine duodenal mucosa, compared to chicken-derived strains of the same species (p = 0.015 for E. faecalis and p = 0.002 for E. faecium). The determination of the hydrophobicity of bacteria revealed that canine E. faecalis had the highest hydrophobicity level (36.6%), followed by chicken E. faecalis (20.4%), while canine E. faecium (5.7%) and chicken E. faecium (4.5%) had the lowest levels. Our results suggest that both the bacterial species and the host origin of the strain may influence mucosal adhesion.
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Affiliation(s)
- Mohsen Hanifeh
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, 00014 Helsinki, Finland; (T.S.); (T.G.)
- Correspondence:
| | - Thomas Spillmann
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, 00014 Helsinki, Finland; (T.S.); (T.G.)
| | - Mirja Huhtinen
- Orion Corporation, Orion Pharma, R&D, 02200 Espoo, Finland; (M.H.); (Y.S.S.)
| | | | - Thomas Grönthal
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, 00014 Helsinki, Finland; (T.S.); (T.G.)
| | - Ulla Hynönen
- Department of Veterinary Biosciences, Veterinary Microbiology and Epidemiology, University of Helsinki, 00014 Helsinki, Finland;
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Mantziari A, Mannila E, Collado MC, Salminen S, Gómez-Gallego C. Exogenous Polyamines Influence In Vitro Microbial Adhesion to Human Mucus According to the Age of Mucus Donor. Microorganisms 2021; 9:1239. [PMID: 34200306 PMCID: PMC8226599 DOI: 10.3390/microorganisms9061239] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/26/2021] [Accepted: 06/05/2021] [Indexed: 12/31/2022] Open
Abstract
Adhesion to intestinal mucus is the first step for microbiota colonization in early life. Polyamines are polycations with important physiological functions in both procaryotic and eucaryotic cells. However, their role in intestinal mucus adhesion is not known. The objective of the present study was to evaluate whether exogenous polyamines (putrescine, spermidine, spermine, and their combination) would alter the adhesive properties of Lacticaseibacillus rhamnosus GG (LGG), Bifidobacterium animalis subs. lactis Bb12, Cronobacter sakazakii, and Escherichia coli. Human intestinal mucus was isolated from healthy infants (0-6-month-old and 6-12-month-old) and healthy adults (25-52 years old). Spermidine significantly increased Bb12 adhesion (p < 0.05) in the mucus of infants (0-6 months) but reduced the adhesion of LGG in adult mucus (p < 0.05) with no significant effect in any of the infant groups. Spermine was more effective than polyamine combinations in reducing C. sakazakii (p < 0.05) adhesion in early infant mucus (0-6 months). The adhesion ability of E. coli remained unaffected by exogenous polyamines at any age in the concentrations tested. Our data suggest that polyamines may modulate the bacterial adhesion to mucus depending on the bacterial strain and depending at what age the mucus has been generated.
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Affiliation(s)
- Anastasia Mantziari
- Functional Foods Forum, Faculty of Medicine, University of Turku, 20520 Turku, Finland; (E.M.); (M.C.C.); (S.S.)
| | - Enni Mannila
- Functional Foods Forum, Faculty of Medicine, University of Turku, 20520 Turku, Finland; (E.M.); (M.C.C.); (S.S.)
| | - Maria Carmen Collado
- Functional Foods Forum, Faculty of Medicine, University of Turku, 20520 Turku, Finland; (E.M.); (M.C.C.); (S.S.)
- Institute of Agrochemistry and Food Technology, National Research Council (IATA-CSIC), 46980 Valencia, Spain
| | - Seppo Salminen
- Functional Foods Forum, Faculty of Medicine, University of Turku, 20520 Turku, Finland; (E.M.); (M.C.C.); (S.S.)
| | - Carlos Gómez-Gallego
- Institute of Public Health and Clinical Nutrition, School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
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Rogowska A, Pomastowski P, Rafińska K, Railean-Plugaru V, Złoch M, Walczak J, Buszewski B. A study of zearalenone biosorption and metabolisation by prokaryotic and eukaryotic cells. Toxicon 2019; 169:81-90. [PMID: 31493420 DOI: 10.1016/j.toxicon.2019.09.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 08/28/2019] [Accepted: 09/03/2019] [Indexed: 11/30/2022]
Abstract
A study of the mechanism responsible for the zearalenone (ZEA) neutralization by lactic acid bacteria Lactococcus lactis 56 and L929 cell line was carried out by determination of the kinetics of the binding process. In the case of prokaryotic cells the biosorption process was non-linear and three steps were identified. The maximum efficiency of zearalenone binding to L. lactis was almost 30% and no metabolites were observed. In turn, for eukaryotic cells only two steps of the binding process were differentiated, and the efficiency of zearalenone binding was 53.99%. Furthermore, L929 cell line metabolizes zearalenone to α-ZOL and β-ZOL. Additionally, Fourier transform infrared spectroscopy (FTIR) was used for description of the structural changes at the protein and lipid level, while Matrix Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry (MALDI-TOF-MS) was applied to detect changes at the molecular level.
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Affiliation(s)
- Agnieszka Rogowska
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7 St, PL-87-100 Toruń, Poland; Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Wileńska 4, 87-100 Torun, Poland
| | - Paweł Pomastowski
- Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Wileńska 4, 87-100 Torun, Poland
| | - Katarzyna Rafińska
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7 St, PL-87-100 Toruń, Poland; Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Wileńska 4, 87-100 Torun, Poland
| | - Viorica Railean-Plugaru
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7 St, PL-87-100 Toruń, Poland; Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Wileńska 4, 87-100 Torun, Poland
| | - Michał Złoch
- Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Wileńska 4, 87-100 Torun, Poland
| | - Justyna Walczak
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7 St, PL-87-100 Toruń, Poland; Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Wileńska 4, 87-100 Torun, Poland
| | - Bogusław Buszewski
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7 St, PL-87-100 Toruń, Poland; Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Wileńska 4, 87-100 Torun, Poland.
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Garcia-Gonzalez N, Prete R, Battista N, Corsetti A. Adhesion Properties of Food-Associated Lactobacillus plantarum Strains on Human Intestinal Epithelial Cells and Modulation of IL-8 Release. Front Microbiol 2018; 9:2392. [PMID: 30349520 PMCID: PMC6186789 DOI: 10.3389/fmicb.2018.02392] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 09/18/2018] [Indexed: 01/26/2023] Open
Abstract
Food-associated microbes can reach the gut as viable cells and interact with the human host providing potential health benefits. In this study, we evaluated the impact on cell viability and the adhesion ability of 22 Lactobacillus plantarum strains, mainly isolated from fermented foods, on a Normal-derived Colon Mucosa cell line. Furthermore, due to the presence of mucus layer on the gut epithelium, we also investigated whether the mucin could affect the microbial adhesion property. Our results demonstrated that all the strains displayed a strong ability to adhere to host cells, showing a strain-dependent behavior with preference for cell edges, that resulted not to be affected by the presence of mucin. Based on interleukin-8 release of intestinal cells induced by some Lb. plantarum strains, our data suggest a potential cross-talk with the host immune system as unconventional property of these food-associated microbes.
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Affiliation(s)
- Natalia Garcia-Gonzalez
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Roberta Prete
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Natalia Battista
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Aldo Corsetti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
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Partial Characterization of Bacteriocins Produced by Two New Enterococcus faecium Isolated from Human Intestine. Probiotics Antimicrob Proteins 2016; 5:110-20. [PMID: 26782736 DOI: 10.1007/s12602-013-9129-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
This study aimed at characterizing two novel bacteriocin-producing enterococcal strains isolated from human intestine. A total of 200 lactic acid bacteria were isolated from a woman stool sample. Two of them were selected for characterization due to their high antimicrobial activity against five strains of Listeria monocytogenes. The selected bacteria were identified as two different strains of Enterococcus faecium and designated MT 104 and MT 162. The bacteriocins produced by MT 104 and MT 162 were stable at different pH ranging from 2 to 11 and were active after different treatments such as heat, enzymes, detergents, and γ-irradiation. The two isolated strains exhibited some probiotic properties such as survival in simulated gastric fluid and intestinal fluid, lack of expression of bile salt hydrolase or hemolytic activity, adhesion to Caco-2 cells efficiently, and sensitivity to clinical antimicrobial agents. Thus, the two isolated strains of E. faecium could become new probiotic bacteria and their bacteriocins could be used for controlling L. monocytogenes in combination with irradiation for food preservation.
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Dimitrov Z, Gotova I, Chorbadjiyska E. In vitro characterization of the adhesive factors of selected probiotics to Caco-2 epithelium cell line. BIOTECHNOL BIOTEC EQ 2014; 28:1079-1083. [PMID: 26019594 PMCID: PMC4434056 DOI: 10.1080/13102818.2014.969948] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 07/25/2014] [Indexed: 11/29/2022] Open
Abstract
The aim of the present study was to analyse the type of adhesive factors of selected probiotic strains. A large number of lactic acid bacteria with intestinal and dairy origin were collected and assessed for adhesion on Caco-2 cell line. From the best adherent bacteria, four strains were selected for further research: Lactobacillus gasseri G7, L. plantarum F1, L. helveticus AC and L. delbrueckii subsp. bulgaricus B14. The average number of adhered bacteria was 17 per one Caco-2 cell in the case of L. gasseri G7 and 21 per cell in the case of L. plantarum F1. Treatment with ethylenediaminetetraacetic acid (EDTA), trypsin and metaperiodic acid in separate assays revealed that cell-bonded extracellular proteins were responsible for the adhesion of the selected L. gasseri, L. plantarum and L. helveticus strains, in contrast to the L. delbrueckii subsp. bulgaricus strain, whose adhesive factors were identified as cell-bonded exopolysaccharides. The cell-wall proteins from the first three strains were isolated, fractionated and assessed for adhesion to Caco-2 cells. Based on the attachment properties of the purified proteins towards Caco-2 cells, it was clearly proved exactly which proteins are involved in the adherence. L. plantarum F1 strain contains two adhesive proteins in contrast to the other selected strains containing one adhesive protein each. The determination of the factors mediating the adhesive abilities of the selected strains provides important information about the possible ways to preserve and increase adhesive properties towards epithelium cells.
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Affiliation(s)
| | - Irina Gotova
- R&D Center, LB-Bulgaricum PLC ., Sofia , Bulgaria
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9
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Kim SY, Shin KS, Lee H. Adhesive Properties of Lactobacillus brevis FSB-1 In Vivo. Korean J Food Sci Anim Resour 2010. [DOI: 10.5851/kosfa.2010.30.4.560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Kim JS, Harikrishnan R, Kim MC, Balasundaram C, Heo MS. Dietary administration of Zooshikella sp. enhance the innate immune response and disease resistance of Paralichthys olivaceus against Sreptococcus iniae. FISH & SHELLFISH IMMUNOLOGY 2010; 29:104-110. [PMID: 20206273 DOI: 10.1016/j.fsi.2010.02.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2009] [Revised: 02/23/2010] [Accepted: 03/23/2010] [Indexed: 05/28/2023]
Abstract
We report the growth, innate immune response, and disease resistance in olive flounder (Paralichthys olivaceus) challenged with Streptococcus iniae after feeding with diet enriched with Zooshikella sp. strain JE-34 three different concentration i.e. Low (3.4 x 10(4), n = 50), medium (3.5 x 10(6), n = 50), and high (3.4 x 10(8), n = 50) cfu ml(-1) supplemented diets, the changes were monitored on weeks 1, 2, 4, 8, 12, and 16. With all diets the innate immune parameters, such as superoxide anion production, phagocytic and lysozyme activity were not enhanced on week 1 and 4. On the other hand, all tested immune parameters in the treated groups significantly enhanced after 8th week; the weight gain significantly increased after 4th week in fish fed with enriched diets. The mortality in olive flounder after administration with high concentration diet showed 25%. With low and medium enriched diets the mortality was 40% and 35%, respectively. In the infected untreated group mortality was 85% while there was no mortality in the control group. The results suggested that Zooshikella sp. strain JE-34 enriched diets could be used to enhance the innate immune response and disease resistance of P. olivaceus against S. iniae.
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Affiliation(s)
- Ju-Sang Kim
- Marine Applied Microbes and Aquatic Organism Disease Control Lab, Department of Aquatic Biomedical Sciences, School of Marine Biomedical Sciences, College of Ocean Sciences & Marine and Environmental Research Institute, Jeju National University, Jeju 690-756, Republic of Korea
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Sung C, Kim BG, Kim S, Joo HS, Kim PI. Probiotic potential of Staphylococcus hominis MBBL 2-9 as anti-Staphylococcus aureus agent isolated from the vaginal microbiota of a healthy woman. J Appl Microbiol 2009; 108:908-916. [PMID: 19709336 DOI: 10.1111/j.1365-2672.2009.04485.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS To isolate and characterize an antagonist for use as probiotic agent in the biocontrol of Staphylococcus aureus. METHODS AND RESULTS Bacteria that exhibited antimicrobial activity against Gram-positive bacteria including Staph. aureus were isolated from 12 healthy women, with Staphylococcus hominis MBBL 2-9 showing the strongest activity. The bacteriocin produced by Staph. hominis MBBL 2-9 was purified by 60% ammonium sulfate saturation, ultrafiltration, HLB cartridge and reverse-phase HPLC. The molecular weight was estimated as 2038.2 Da by MALDI-TOF mass spectrometry. The antagonist survived up to 2 h in artificial gastric juice (pH 2.5) and grew in the presence of 1% porcine bile extract. In addition, Staph. hominis MBBL 2-9 adhered effectively to HT-29 epithelial cell line. CONCLUSION Staphylococcus hominis MBBL 2-9 exhibited desirable probiotic traits such as acid tolerance, bile resistance and adherence to epithelial cell line. The bacterium also produced a bacteriocin with unique molecular weight and high antimicrobial activity similar to traditional antibiotics. SIGNIFICANCE AND IMPACT OF THE STUDY This study is the first report of a bacteriocin-producing Staph. hominis MBBL 2-9 that has potential for use as a probiotic agent against Staph. aureus.
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Affiliation(s)
- C Sung
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, Korea
| | - B-G Kim
- School of Chemical and Biological Engineering, Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Korea., Institute of Bioengineering, Seoul National University, Seoul, Korea
| | - S Kim
- Division of Food Science, Korea University, Anam-dong, Sungbuk-ku, Seoul, Korea
| | - H-S Joo
- School of Chemical and Biological Engineering, Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Korea
| | - P I Kim
- School of Chemical and Biological Engineering, Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Korea
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Matsumoto M. Effect ofBifidobacterium lactisLKM 512 Yogurt on Fecal Microflora in Middle to Old Aged Persons. MICROBIAL ECOLOGY IN HEALTH AND DISEASE 2009. [DOI: 10.1080/089106000435455] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Mitsuharu Matsumoto
- Research Laboratories, Kyodo Milk Industry Co., Ltd, 20-1 Hirai, Hinode, Tokyo, 190-0182 Japan
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Sadykov R, Digel I, Artmann AT, Porst D, Linder P, Kayser P, Artmann G, Savitskaya I, Zhubanova A. Oral lead exposure induces dysbacteriosis in rats. J Occup Health 2008; 51:64-73. [PMID: 19096199 DOI: 10.1539/joh.m8009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES Lead's (Pb(II)) possible role in intestinal pathologies of microbial etiology remains mostly unknown. The aim of this study was to examine the effects of lead on the gut microbial community and its interactions with rat intestinal epithelium. METHODS The lead-induced changes in different intestinal microbial groups (lactose-positive lac(+) and -negative lac(-) E.coli strains, lactobacilli and yeasts) were followed separately by the colony-forming unit (CFU) method. Samples were taken from outbred white rats subjected to different exposure schedules. Additionally, the impact of different lead doses on microbial adhesion to cultured intestinal cells (IEC-6) was investigated. Finally, the lead accumulation and distribution were measured by means of atomic absorption spectrometry. RESULTS For the first time it was shown that oral lead exposure causes drastic changes in the gut microbial community. Proportional to the lead dose received, the relative number of lactose-negative E.coli cells increased dramatically (up to 1,000-fold) in comparison to the other microbial groups during 2 wk of exposure. Considering the number of microbes in the intestine, such a shift in intestinal microflora (dysbacteriosis) is very significant. Adhesion studies showed certain stimulating effects of lead on E. coli attachment to rat intestinal epithelium as compared to Lactobacillus attachment. CONCLUSIONS The mechanisms providing the apparent competitive success of the lac(-) group are unclear but could be related to changes in surface interactions between microbial and host cells. This study may provide important clues for understanding the pathological effects of metal dietary toxins in human beings.
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Affiliation(s)
- Rustam Sadykov
- Kazakh National University Named after Al-Farabi, Republic of Kazakhstan
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Metabolic activity of probiotics-oxalate degradation. Vet Microbiol 2008; 136:100-7. [PMID: 19028028 DOI: 10.1016/j.vetmic.2008.10.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2008] [Revised: 10/02/2008] [Accepted: 10/06/2008] [Indexed: 11/21/2022]
Abstract
Urinary tract stones are an important clinical problem in human and veterinary medicine. Hyperoxaluria is the single strongest promoter of kidney stone formation. The aims of the present study were to (a) evaluate oxalate degradation by a range of Bifidobacteria species and Lactobacillus species isolated from the canine and feline gastrointestinal tract in vitro and (b) to determine the impact of oxalate degradation by selected strains in vivo. The bacteria were grown in oxalate-containing media and their ability to degrade oxalate in vitro was determined using reverse-phased HPLC. Bifidobacteria species and Lactobacillus species that degraded oxalate in vitro and survived gastric transit were selected for further examination. The selected probiotics were fed to rats for 4 weeks. Urine was collected at week's 0, 2 and 4 and oxalate levels determined by HPLC. In vitro degradation was detected for 11/18 of the Lactobacillus species. In contrast, the capacity to degrade oxalate was not detected for any of the 13 Bifidobacterium species tested. Lactobacillus animalis 223C, Lactobacillus murinus 1222, L. animalis 5323 and L. murinus 3133 were selected for further investigation in a rat model. Urinary oxalate levels were significantly reduced (p<0.05) in animals fed L. animalis 5323 and L. animalis 223C but were unaltered when fed L. murinus 1222, L. murinus 3133 or placebo. Probiotic organisms vary widely in their capacity to degrade oxalate. In vitro degradation does not uniformly translate to an impact in vivo. The results have therapeutic implications and may influence the choice of probiotic, particularly in the setting of enteric hyperoxaluria.
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Vlková E, Rada V, Šmehilová M, Killer J. Auto-aggregation and Co-aggregation ability in bifidobacteria and clostridia. Folia Microbiol (Praha) 2008; 53:263-9. [DOI: 10.1007/s12223-008-0040-z] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2007] [Revised: 01/17/2008] [Indexed: 11/29/2022]
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16
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Becker PM, Galletti S, Roubos-van den Hil PJ, van Wikselaar PG. Validation of growth as measurand for bacterial adhesion to food and feed ingredients. J Appl Microbiol 2007; 103:2686-96. [PMID: 17850303 DOI: 10.1111/j.1365-2672.2007.03524.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AIMS A miniaturized adhesion test was designed to study the binding capacity of food and feed ingredients for bacterial cells. METHODS AND RESULTS Bacteria were allowed to adhere to different fibrous materials supplied as well coatings in microtitration plates. The amount of bacteria retained on the materials was determined in an automated way as growth after addition of liquid medium. The test principle was based on an inverse relationship between initial cell densities and the appearance of growth: The higher adhering cell numbers are, the shorter are the detection times of growth. The growth curves obtained were fitted by nonlinear regression analysis employing a sigmoidal curve model. Growth parameters as (i) the time after incubation at which half of the maximum growth yield was reached; (ii) the time-coordinate of the point of inflection; (iii) the detection time calculated as x-axis intercept of the maximum specific growth rate in the point of inflection; and (iv) the time-coordinate of a growth detection threshold at OD = 0.05 were highly separating for the binding capacity of different food and feed ingredients for bacteria. SIGNIFICANCE AND IMPACT OF THE STUDY With growth as measurand for adhesion, a simple, high-throughput method was developed for the screening of huge numbers of different binding matrices and bacteria.
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Affiliation(s)
- P M Becker
- Animal Sciences Group, Wageningen UR, Lelystad, The Netherlands.
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17
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Abstract
Owing to the problem of antibiotic resistance and subsequent reluctance of using antibiotics, the use of probiotics in larviculture is becoming increasingly popular. During the early stages of development, manipulation of the larval digestive system seems possible through the addition of probiotics either through the culture water or via the livefood. Well-studied probiotics used in human medicine and terrestrial agriculture have proved to be successful in aquaculture and therefore reduce the need for extensive biosafety trials. The selection of probiotics requires various in vitro screening experiments, which assay for the production of antagonist compounds, their growth in and attachment to fish intestinal mucus, and the production of other beneficial compounds such as vitamins, fatty acids and digestive enzymes. Further information regarding probiont suitability can be obtained from its identification, interaction with livefood and host pathogenicity. Finally, pilot-scale in vivo tests need be performed, after which a production cost-benefit analysis to determine its economic viability needs to be undertaken.
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Affiliation(s)
- Niall G Vine
- Department of Ichthyology & Fisheries Science, Rhodes University, Grahamstown, South Africa.
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18
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Shetty PH, Jespersen L. Saccharomyces cerevisiae and lactic acid bacteria as potential mycotoxin decontaminating agents. Trends Food Sci Technol 2006. [DOI: 10.1016/j.tifs.2005.10.004] [Citation(s) in RCA: 183] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Gueimonde M, Noriega L, Margolles A, de los Reyes-Gavilan CG, Salminen S. Ability of Bifidobacterium strains with acquired resistance to bile to adhere to human intestinal mucus. Int J Food Microbiol 2005; 101:341-6. [PMID: 15925715 DOI: 10.1016/j.ijfoodmicro.2004.11.013] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2004] [Revised: 09/24/2004] [Accepted: 11/19/2004] [Indexed: 11/25/2022]
Abstract
The hydrophobicity and capacity to adhere to human intestinal mucus of Bifidobacterium strains with acquired resistance to bile were assessed and compared with those of their more sensitive original strains. The resistant variants used were previously obtained [Int. J. Food Microbiol. 82 (2003) 191; Int. J. Food Microbiol. 94 (2004) 79] by progressive adaptation of originally more sensitive strains to gradually increasing concentrations of bile. In five out of the seven groups of original and bile-resistant variants tested the resistant strains showed higher adhesion levels to human mucus (range between 1.4- and 4-fold) than their corresponding original strains. However, in the presence of physiologic concentrations of bile (0.3%, w/v) the adhesion level of all Bifidobacterium strains dropped between 7% and 74%, depending on the strain. In spite of this, the adhesion capability of three bile-resistant variants remained higher than that of their originals. Hydrophobicity evidenced considerable variability; in four out of the seven bile-resistant strains it was higher than in the original strains, although no direct correlation between adhesion and hydrophobicity could be established. It was concluded that the acquisition of bile resistance by our Bifidobacterium strains promoted changes in hydrophobicity and in the adhesion of these microorganisms to human intestinal mucus.
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Affiliation(s)
- Miguel Gueimonde
- Department of Biochemistry and Food Chemistry, University of Turku, Vatselankatu 2, FIN-20014 Turku, Finland.
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20
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Gratz S, Mykkänen H, Ouwehand AC, Juvonen R, Salminen S, El-Nezami H. Intestinal mucus alters the ability of probiotic bacteria to bind aflatoxin B1 in vitro. Appl Environ Microbiol 2004; 70:6306-8. [PMID: 15466581 PMCID: PMC522068 DOI: 10.1128/aem.70.10.6306-6308.2004] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Several probiotics are known to bind aflatoxin B(1) (AFB(1)) to their surfaces and to adhere to intestinal mucus. In this study, preincubation of two probiotic preparations with either AFB(1) or mucus reduced the subsequent surface binding of mucus and AFB(1), respectively, in a strain-dependent manner.
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Affiliation(s)
- S Gratz
- Department of Clinical Nutrition, University of Kuopio, Harjulantie 1, P.O. Box 1627, 70211 Kuopio, Finland
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21
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Pedersen C, Jonsson H, Lindberg JE, Roos S. Microbiological characterization of wet wheat distillers' grain, with focus on isolation of lactobacilli with potential as probiotics. Appl Environ Microbiol 2004; 70:1522-7. [PMID: 15006774 PMCID: PMC368301 DOI: 10.1128/aem.70.3.1522-1527.2004] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Wet wheat distillers' grain (WWDG), a residue from ethanol fermentation, was examined from a microbiological perspective. After storage, WWDG was characterized by a high content of lactobacilli, nondetectable levels of other bacteria, occasional occurrence of yeasts, and a pH of about 3.6 and contained a mixture of lactic acid, acetic acid, and ethanol. The composition of lactobacilli in WWDG was simple, including primarily the species Lactobacillus amylolyticus, Lactobacillus panis, and Lactobacillus pontis, as determined by 16S rRNA gene sequencing. Since the use of WWDG as pig feed has indicated a health-promoting function, some relevant characteristics of three strains of each of these species were examined together with basal physiological parameters, such as carbohydrate utilization and growth temperature. Seven of the strains were isolated from WWDG, and two strains from pig feces were included for comparison. It was clear that all three species could grow at temperatures of 45 to 50 degrees C, with L. amylolyticus being able to grow at temperatures as high as 54 degrees C. This finding could be the explanation for the simple microflora of WWDG, where a low pH together with a high temperature during storage would select for these organisms. Some strains of L. panis and L. pontis showed prolonged survival at pH 2.5 in synthetic stomach juice and good growth in the presence of porcine bile salt. In addition, members of all three species were able to bind to immobilized mucus material in vitro. Especially the isolates from pig feces but, interestingly, some isolates from WWDG as well possessed properties that might be of importance for colonization of the gastrointestinal tracts of pigs.
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Affiliation(s)
- C Pedersen
- Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden
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22
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Nikoskelainen S, Ouwehand AC, Bylund G, Salminen S, Lilius EM. Immune enhancement in rainbow trout (Oncorhynchus mykiss) by potential probiotic bacteria (Lactobacillus rhamnosus). FISH & SHELLFISH IMMUNOLOGY 2003; 15:443-452. [PMID: 14550670 DOI: 10.1016/s1050-4648(03)00023-8] [Citation(s) in RCA: 110] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The present study assessed the immune enhancement of fish by a lactic acid bacterium (LAB) Lactobacillus rhamnosus (ATCC 53103). The bacterium was administered orally at five different doses 7.9 x 10(4) (LAB4), 2.1 x 10(6) (LAB6), 2.8 x 10(8) (LAB8), 1.9 x 10(10) (LAB10) and 9.7 x 10(10) (LAB11) CFU/g feed to rainbow trout for two weeks and the feed was changed to un-supplemented diet. From the onset of feeding supplemented diets at 1, 2, 3 and 4 weeks, blood and mucus samples were taken. During the LAB feeding period L. rhamnosus persisted in the fish intestine and in the tank water in high numbers. However, L. rhamnosus disappeared from the intestine, skin mucus and tank water within one week after the change to the non-supplemented feed. In comparison to untreated control fish, respiratory burst activity of blood cells was raised significantly in the LAB4 treated group on week 2. Serum-mediated killing of Escherichia coli was increased significantly in group LAB6 on week 2. Serum immunoglobulin levels were significantly raised only in LAB8 group on week 1 and in LAB4 and LAB8 at the end of the trial. The results show that rainbow trout immune parameters were enhanced by using probiotic bacteria.
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Affiliation(s)
- Sami Nikoskelainen
- Department of Biochemistry and Food Chemistry, University of Turku, 20014 Turku, Finland.
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23
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Lee YK, Puong KY, Ouwehand AC, Salminen S. Displacement of bacterial pathogens from mucus and Caco-2 cell surface by lactobacilli. J Med Microbiol 2003; 52:925-930. [PMID: 12972590 DOI: 10.1099/jmm.0.05009-0] [Citation(s) in RCA: 222] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Competition, competitive exclusion and displacement of eight strains of Escherichia coli and Salmonella spp. by Lactobacillus rhamnosus GG and Lactobacillus casei Shirota from adhesion on human intestinal mucus glycoproteins and Caco-2 cell surfaces were studied. Lactobacilli were able to compete with, exclude and displace pathogenic gastrointestinal (GI) bacteria when they were incubated together, but the degree of inhibition of adhesion was bacterial strain-dependent. Competition and exclusion profiles of GI bacteria by lactobacilli were similar. Displacement profiles of GI bacteria were different from those of competition and exclusion and the process was relatively slow: displacement equilibrium took more than 2 h. These findings are important for development, selection and in vitro assessment of target- and function-specific probiotics.
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Affiliation(s)
- Yuan-Kun Lee
- Department of Microbiology, Faculty of Medicine, National University of Singapore, 5 Science Drive 2, Singapore 117597 2Department of Biochemistry and Food Chemistry, University of Turku, Fin-20014 Turku, Finland
| | - Kim-Yoong Puong
- Department of Microbiology, Faculty of Medicine, National University of Singapore, 5 Science Drive 2, Singapore 117597 2Department of Biochemistry and Food Chemistry, University of Turku, Fin-20014 Turku, Finland
| | - Arthur C Ouwehand
- Department of Microbiology, Faculty of Medicine, National University of Singapore, 5 Science Drive 2, Singapore 117597 2Department of Biochemistry and Food Chemistry, University of Turku, Fin-20014 Turku, Finland
| | - Seppo Salminen
- Department of Microbiology, Faculty of Medicine, National University of Singapore, 5 Science Drive 2, Singapore 117597 2Department of Biochemistry and Food Chemistry, University of Turku, Fin-20014 Turku, Finland
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24
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Rönkä E, Malinen E, Saarela M, Rinta-Koski M, Aarnikunnas J, Palva A. Probiotic and milk technological properties of Lactobacillus brevis. Int J Food Microbiol 2003; 83:63-74. [PMID: 12672593 DOI: 10.1016/s0168-1605(02)00315-x] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Two Lactobacillus brevis strains ATCC 8287 and ATCC 14869(T), were evaluated for their applicability as putative probiotics in dairy products. The strains expressed good in vitro adherence to human Caco-2 and Intestine 407 cells and tolerated well low pH, bile acids and pancreatic fluid under in vitro conditions. In antimicrobial activity assays, strain ATCC 8287 showed inhibitory properties toward selected potential harmful microorganisms, particularly against Bacillus cereus. Both L. brevis strains were resistant to vancomycin, which is typical for the genus Lactobacillus. The L. brevis strains were not able to acidify milk to yoghurt but were suitable as supplement strains in yoghurts. This was shown by producing a set of yoghurt products and analysing their rheological and sensory properties during a cold storage period of 28 days. Survival of the strains through human intestine was examined in 1-week feeding trials. Despite its human origin, L. brevis ATCC 14869(T) could not survive through the gastrointestinal (GI) tract, whereas L. brevis ATCC 8287 was detected in the faecal samples taken during and immediately after ingestion of the strain. In conclusion, L. brevis ATCC 8287 is a promising candidate as a probiotic supplement in dairy products.
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Affiliation(s)
- Elina Rönkä
- Section of Microbiology, Faculty of Veterinary Medicine, Department of Basic Veterinary Sciences, University of Helsinki, P.O. Box 57, FIN-00014, Helsinki, Finland
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25
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Lauková A, Guba P, Nemcová R, Vasilková Z. Reduction of Salmonella in gnotobiotic Japanese quails caused by the enterocin A-producing EK13 strain of Enterococcus faecium. Vet Res Commun 2003; 27:275-80. [PMID: 12872827 DOI: 10.1023/a:1024027923824] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The effect of the enterocin A-producing EK strain of Enterococcus faecium on Salmonella dusseldorf SA31 was tested in gnotobiotic Japanese quails. Sixteen 3-day-old gnotobiotic Japanese quails, hatched from disinfected eggs placed in sterile boxes, were divided into two groups of 8 birds: a control group, which was inoculated orally with the SA31 strain (1 x 10(7) CFU/ml), and the experimental group, which was inoculated orally with 200 microl of E. faecium (1 x 10(9) CFU/ml), 16 h before infection with the S. dusseldorf. The latter group then received the same average dose of E. faecium daily in drinking water. Faecal samples were taken 8, 24, 48 and 168 h after the inoculation of S. dusseldorf and examined for S. dusseldorf and E. faecium (EK13). The quails were then killed and the number of the EK13 strain of E. faecium and of S. dusseldorf in the caecum and ileum were estimated. A reducing effect of the EK13 strain against the SA31 strain in faeces was detected in the samples taken at 24 and 48 h from the group with the EK13 strain. Significant reductions were also found in the numbers of S. dusseldorf SA31 strain in the caecum but not in the ileum.
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Affiliation(s)
- A Lauková
- Institute of Animal Physiology Slovak Academy of Sciences, Soltésovej 4-6, 04001 Kosice, Slovakia.
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26
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Steidler L. Microbiological and immunological strategies for treatment of inflammatory bowel disease. Microbes Infect 2001; 3:1157-66. [PMID: 11709296 DOI: 10.1016/s1286-4579(01)01476-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Chronic inflammatory bowel diseases such as Crohn's disease or ulcerative colitis, affect around 1 in every 1000 individuals in western countries. They probably result from an inappropriate reaction towards the commensal microflora and are currently treated with anti-inflammatory drugs or surgery. Novel strategies aim at blocking lymphocyte recruitment and activation, improved targeting of therapeutics and modification of gut microflora.
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Affiliation(s)
- L Steidler
- Department of Molecular Biology, Flanders Interuniversity Institute for Biotechnology and Ghent University, KL. Ledeganckstraat 35, B-9000, Gent, Belgium.
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27
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Ouwehand AC, Tuomola EM, Lee YK, Salminen S. Microbial interactions to intestinal mucosal models. Methods Enzymol 2001; 337:200-12. [PMID: 11398429 DOI: 10.1016/s0076-6879(01)37015-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- A C Ouwehand
- Department of Biochemistry and Food Chemistry, University of Turku, 20014 Turku, Finland
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28
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Lee YK, Lim CY, Teng WL, Ouwehand AC, Tuomola EM, Salminen S. Quantitative approach in the study of adhesion of lactic acid bacteria to intestinal cells and their competition with enterobacteria. Appl Environ Microbiol 2000; 66:3692-7. [PMID: 10966378 PMCID: PMC92208 DOI: 10.1128/aem.66.9.3692-3697.2000] [Citation(s) in RCA: 145] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
To describe the phenomena of bacterial adhesion to intestinal cells and the competition for adhesion between bacteria, mathematical equations based on a simple dissociation process involving a finite number of bacterial receptors on intestinal cell surface were developed. The equations allow the estimation of the maximum number of Lactobacillus sp. and Escherichia coli cells that can adhere to Caco-2 cells and intestinal mucus; they also characterize the affinity of the bacteria to Caco-2 cells and intestinal and fecal mucus and the theoretical adhesion ratio of two bacteria present in a mixed suspension. The competition for adhesion between Lactobacillus rhamnosus GG and E. coli TG1 appeared to follow the proposed kinetics, whereas the competition between Lactobacillus casei Shirota and E. coli TG1 may involve multiple adhesion sites or a soluble factor in the culture medium of the former. The displacement of the adhered Lactobacillus by E. coli TG1 seemed to be a rapid process, whereas the displacement of E. coli TG1 by the Lactobacillus took more than an hour.
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Affiliation(s)
- Y K Lee
- Department of Microbiology, Faculty of Medicine, National University of Singapore, Singapore 117597, Republic of Singapore.
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29
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Ouwehand A, Kirjavainen P, Grönlund MM, Isolauri E, Salminen S. Adhesion of probiotic micro-organisms to intestinal mucus. Int Dairy J 1999. [DOI: 10.1016/s0958-6946(99)00132-6] [Citation(s) in RCA: 159] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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