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Eveleens Maarse BC, Eggink HM, Warnke I, Bijlsma S, van den Broek TJ, Oosterman JE, Caspers MPM, Sybesma W, Gal P, van Kraaij SJW, Schuren FHJ, Moerland M, Hoevenaars FPM. Impact of fibre supplementation on microbiome and resilience in healthy participants: A randomized, placebo-controlled clinical trial. Nutr Metab Cardiovasc Dis 2024:S0939-4753(24)00048-6. [PMID: 38499450 DOI: 10.1016/j.numecd.2024.01.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 03/20/2024]
Abstract
BACKGROUND AND AIMS The gut microbiome exerts important roles in health, e.g., functions in metabolism and immunology. These functions are often exerted via short-chain fatty acid (SCFA) production by gut bacteria. Studies demonstrating causal relationships between interventions targeting the microbiome and clinical outcomes are limited. This study aimed to show a causal relationship between microbiome modulation through fibre intervention and health. METHODS AND RESULTS This randomized, double-blind, cross-over study included 65 healthy subjects, aged 45-70 years, with increased metabolic risk (i.e., body mass index [BMI] 25-30 kg/m2, low to moderate daily dietary fibre intake, <30g/day). Subjects took daily a fibre mixture of Acacia gum and carrot powder or placebo for 12 weeks, with an 8-week wash-out period. Faecal samples for measurement of SCFAs and microbiome analysis were collected every 4 weeks. Before and after each intervention period subjects underwent the mixed-meal PhenFlex challenge Test (PFT). Health effects were expressed as resilience to the stressors of the PFT and as fasting metabolic and inflammatory state. The fibre mixture exerted microbiome modulation, with an increase in β-diversity (p < 0.001). α-diversity was lower during fibre mixture intake compared to placebo after 4, 8 and 12 weeks (p = 0.002; p = 0.012; p = 0.031). There was no effect observed on faecal SCFA concentrations, nor on any of the primary clinical outcomes (Inflammatory resilience: p = 0.605, Metabolic resilience: p = 0.485). CONCLUSION Although the intervention exerted effects on gut microbiome composition, no effects on SCFA production, on resilience or fasting metabolic and inflammatory state were observed in this cohort. REGISTRATION NUMBER CLINICALTRIALS.GOV: NCT04829396.
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Affiliation(s)
- Boukje C Eveleens Maarse
- Centre for Human Drug Research, Leiden, the Netherlands; Leiden University Medical Center, Leiden, the Netherlands
| | - Hannah M Eggink
- TNO, Netherlands Organisation for Applied Scientific Research, Leiden, the Netherlands
| | - Ines Warnke
- dsm-firmenich, CH-4303, Kaiseraugst, Switzerland
| | - Sabina Bijlsma
- TNO, Netherlands Organisation for Applied Scientific Research, Leiden, the Netherlands
| | - Tim J van den Broek
- TNO, Netherlands Organisation for Applied Scientific Research, Leiden, the Netherlands
| | - Johanneke E Oosterman
- TNO, Netherlands Organisation for Applied Scientific Research, Leiden, the Netherlands
| | - Martien P M Caspers
- TNO, Netherlands Organisation for Applied Scientific Research, Leiden, the Netherlands
| | | | - Pim Gal
- Centre for Human Drug Research, Leiden, the Netherlands; Leiden University Medical Center, Leiden, the Netherlands
| | - Sebastiaan J W van Kraaij
- Centre for Human Drug Research, Leiden, the Netherlands; Leiden University Medical Center, Leiden, the Netherlands
| | - Frank H J Schuren
- TNO, Netherlands Organisation for Applied Scientific Research, Leiden, the Netherlands
| | - Matthijs Moerland
- Centre for Human Drug Research, Leiden, the Netherlands; Leiden University Medical Center, Leiden, the Netherlands
| | - Femke P M Hoevenaars
- TNO, Netherlands Organisation for Applied Scientific Research, Leiden, the Netherlands.
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2
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Vissamsetti N, Simon-Collins M, Lin S, Bandyopadhyay S, Kuriyan R, Sybesma W, Tomé D. Local Sources of Protein in Low- and Middle-Income Countries: How to Improve the Protein Quality? Curr Dev Nutr 2024; 8:102049. [PMID: 38476722 PMCID: PMC10926142 DOI: 10.1016/j.cdnut.2023.102049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 11/18/2023] [Accepted: 11/26/2023] [Indexed: 03/14/2024] Open
Abstract
Protein inadequacy is a major contributor to nutritional deficiencies and adverse health outcomes of populations in low- and middle-income countries (LMICs). People in LMICs often consume a diet predominantly based on staple crops, such as cereals or starches, and derive most of their daily protein intakes from these sources. However, plant-based sources of protein often contain low levels of indispensable amino acids (IAAs). Inadequate intake of IAA in comparison with daily requirements is a limiting factor that results in protein deficiency, consequently in the long-term stunting and wasting. In addition, plant-based sources contain factors such as antinutrients that can diminish protein digestion and absorption. This review describes factors that affect protein quality, reviews dietary patterns of populations in LMICs and discusses traditional and novel small- and large-scale techniques that can improve the quality of plant protein sources for enhanced protein bioavailability and digestibility as an approach to tackle malnutrition in LMICs. The more accessible small-scale food-processing techniques that can be implemented at home in LMICs include soaking, cooking, and germination, whereas many large-scale techniques must be implemented on an industrial level such as autoclaving and extrusion. Limitations and considerations to implement those techniques locally in LMICs are discussed. For instance, at-home processing techniques can cause loss of nutrients and contamination, whereas limitations with larger scale techniques include high energy requirements, costs, and safety considerations. This review suggests that combining these small- and large-scale approaches could improve the quality of local sources of proteins, and thereby address adverse health outcomes, particularly in vulnerable population groups such as children, adolescents, elderly, and pregnant and lactating women.
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Affiliation(s)
- Nitya Vissamsetti
- Department of Biochemistry and Molecular Biology and Center for Physics of Evolving Systems, University of Chicago, Chicago, IL, United States
| | - Mackenzie Simon-Collins
- Division of Reproductive Sciences and Women’s Health Research, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Sheryl Lin
- Department of Biology, Johns Hopkins University, Baltimore, MD, United States
| | - Sulagna Bandyopadhyay
- Division of Nutrition, St. John's Research Institute, St. John's National Academy of Health Sciences, Bangalore, India
| | - Rebecca Kuriyan
- Division of Nutrition, St. John's Research Institute, St. John's National Academy of Health Sciences, Bangalore, India
| | | | - Daniel Tomé
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, Paris, France
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3
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Rehman A, Di Benedetto G, Bird JK, Dabene V, Vadakumchery L, May A, Schyns G, Sybesma W, Mak TN. Development of a workflow for the selection, identification and optimization of lactic acid bacteria with high γ-aminobutyric acid production. Sci Rep 2023; 13:13663. [PMID: 37608211 PMCID: PMC10444875 DOI: 10.1038/s41598-023-40808-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 08/16/2023] [Indexed: 08/24/2023] Open
Abstract
Lactic acid bacteria produce γ-aminobutyric acid (GABA) as an acid stress response. GABA is a neurotransmitter that may improve sleep and resilience to mental stress. This study focused on the selection, identification and optimization of a bacterial strain with high GABA production, for development as a probiotic supplement. The scientific literature and an industry database were searched for probiotics and potential GABA producers. In silico screening was conducted to identify genes involved in GABA production. Subsequently, 17 candidates were screened for in vitro GABA production using thin layer chromatography, which identified three candidate probiotic strains Levilactobacillus brevis DSM 20054, Lactococcus lactis DS75843and Bifidobacterium adolescentis DSM 24849 as producing GABA. Two biosensors capable of detecting GABA were developed: 1. a transcription factor-based biosensor characterized by the interaction with the transcriptional regulator GabR was developed in Corynebacterium glutamicum; and 2. a growth factor-based biosensor was built in Escherichia coli, which used auxotrophic complementation by expressing 4-aminobutyrate transaminase (GABA-T) that transfers the GABA amino group to pyruvate, hereby forming alanine. Consequently, the feasibility of developing a workflow based on co-culture with producer strains and a biosensor was tested. The three GABA producers were identified and the biosensors were encapsulated in nanoliter reactors (NLRs) as alginate beads in defined gut-like conditions. The E. coli growth factor-based biosensor was able to detect changes in GABA concentrations in liquid culture and under gut-like conditions. L. brevis and L. lactis were successfully encapsulated in the NLRs and showed growth under miniaturized intestinal conditions.
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Affiliation(s)
| | | | - Julia K Bird
- Bird Scientific Writing, Wassenaar, The Netherlands
| | | | - Lisa Vadakumchery
- Institute of Microbiology, Eidgenössische Technische Hochschule (ETH) Zürich, Zurich, Switzerland
| | - Ali May
- dsm-firmenich, Biodata and Translational Sciences, Delft, The Netherlands
| | | | - Wilbert Sybesma
- dsm-firmenich, Kaiseraugst, Switzerland
- Microbiome Solutions GmbH, Münsingen, Switzerland
| | - Tim N Mak
- dsm-firmenich, Kaiseraugst, Switzerland.
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4
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Rehman A, Pham V, Seifert N, Richard N, Sybesma W, Steinert RE. The Polyunsaturated Fatty Acids Eicosapentaenoic Acid and Docosahexaenoic Acid, and Vitamin K 1 Modulate the Gut Microbiome: A Study Using an In Vitro Shime Model. J Diet Suppl 2023; 21:135-153. [PMID: 37078491 DOI: 10.1080/19390211.2023.2198007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
Omega-3 polyunsaturated fatty acids (PUFAs) and vitamins exert multiple beneficial effects on host health, some of which may be mediated through the gut microbiome. We investigated the prebiotic potential of eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) and lipid-soluble phylloquinone (vitamin K1), each at 0.2x, 1x and 5x using the simulator of the human intestinal microbial ecosystem (SHIME®) to exclude in vivo systemic effects and host-microbe interactions.Microbial community composition and, diversity [shotgun metagenomic sequencing] and microbial activity [pH, gas pressure, and production of short-chain fatty acids (SCFAs)] were measured over a period of 48 h. Fermentations supernatants were used to investigate the effect on gut barrier integrity using a Caco-2/goblet cell co-culture model.We found that EPA, DHA and vitamin K1 increased alpha-diversity at 24 h when compared with control. Moreover, there was an effect on beta-diversity with changes in gut microbial composition, such as an increase in the Firmicutes/Bacteroidetes (F/B) ratio and a consistent increase in Veillonella and Dialister abundances with all treatments. DHA, EPA, and vitamin K1 also modulated metabolic activity of the gut microbiome by increasing total SCFAs which was related mainly to an increase in propionate (highest with EPA and vitamin K1 at 0.2x). Finally, we found that EPA and DHA increased gut barrier integrity with DHA at 1x and EPA at 5x (p < 0.05, respectively). In conclusion, our in vitro data further establish a role of PUFAs and vitamin K to modulate the gut microbiome with effects on the production of SCFAs and barrier integrity.
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Affiliation(s)
- Ateequr Rehman
- Human Nutrition and Health, DSM Nutritional Products Ltd, Basel, Switzerland
| | - Van Pham
- Human Nutrition and Health, DSM Nutritional Products Ltd, Basel, Switzerland
| | - Nicole Seifert
- Human Nutrition and Health, DSM Nutritional Products Ltd, Basel, Switzerland
| | - Nathalie Richard
- Human Nutrition and Health, DSM Nutritional Products Ltd, Basel, Switzerland
| | - Wilbert Sybesma
- Human Nutrition and Health, DSM Nutritional Products Ltd, Basel, Switzerland
| | - Robert E Steinert
- Human Nutrition and Health, DSM Nutritional Products Ltd, Basel, Switzerland
- Department of Surgery, Division of Visceral and Transplantation Surgery, University Hospital Zurich, Zurich, Switzerland
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5
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Brett BE, Doumbia HOY, Koko BK, Koffi FK, Assa SE, Zahé KYAS, Kort R, Sybesma W, Reid G, de Weerth C. Normative cognition and the effects of a probiotic food intervention in first grade children in Côte d'Ivoire. Sci Rep 2022; 12:19491. [PMID: 36376341 PMCID: PMC9663712 DOI: 10.1038/s41598-022-23797-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 11/05/2022] [Indexed: 11/16/2022] Open
Abstract
The cognitive skills critical for success have largely been studied in Western populations, despite the fact that children in low- and middle-income countries are at risk to not reach their full developmental potential. Moreover, scientists should leverage recent discovery to explore means of boosting cognition in at-risk populations. This semi-randomized controlled trial examined normative cognitive development and whether it could be enhanced by consumption of a probiotic food in a sample of 251 4- to 7-year-old children in urban schools in Côte d'Ivoire. Participants completed executive functioning measures at baseline (T1) and 5 months later (T2). After T1, children in one school received a probiotic (N = 74) or placebo (N = 79) fermented dairy food every day they were in school for one semester; children in the other school (N = 98) continued their diet as usual. Children improved on all tests across time (Cohen's d = 0.08-0.30). The effects of probiotic ingestion were inconclusive and are interpreted with caution due to socio-political factors affecting daily administration. Given the general feasibility of the study, we hope that it will serve as an inspiration for future research into child development and sustainable (health-promoting) interventions for school children in developing nations.
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Affiliation(s)
- Bonnie E. Brett
- grid.10417.330000 0004 0444 9382Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition, and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Bruno K. Koko
- UFR Biosciences, Université Félix Houghouët-Boigny, Abidjan, Côte d’Ivoire
| | | | - Savorgnan E. Assa
- UFR Biosciences, Université Félix Houghouët-Boigny, Abidjan, Côte d’Ivoire
| | | | - Remco Kort
- Yoba For Life Foundation, Amsterdam, The Netherlands ,grid.12380.380000 0004 1754 9227Department of Molecular Cell Biology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | | | - Gregor Reid
- grid.415847.b0000 0001 0556 2414Lawson Health Research Institute and Western University, London, Canada
| | - Carolina de Weerth
- grid.10417.330000 0004 0444 9382Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition, and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
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6
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Pham VT, Fehlbaum S, Seifert N, Richard N, Bruins MJ, Sybesma W, Rehman A, Steinert RE. Effects of colon-targeted vitamins on the composition and metabolic activity of the human gut microbiome- a pilot study. Gut Microbes 2022; 13:1-20. [PMID: 33615992 PMCID: PMC7899684 DOI: 10.1080/19490976.2021.1875774] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
An increasing body of evidence has shown that gut microbiota imbalances are linked to diseases. Currently, the possibility of regulating gut microbiota to reverse these perturbations by developing novel therapeutic and preventive strategies is being extensively investigated. The modulatory effect of vitamins on the gut microbiome and related host health benefits remain largely unclear. We investigated the effects of colon-delivered vitamins A, B2, C, D, and E on the gut microbiota using a human clinical study and batch fermentation experiments, in combination with cell models for the assessment of barrier and immune functions. Vitamins C, B2, and D may modulate the human gut microbiome in terms of metabolic activity and bacterial composition. The most distinct effect was that of vitamin C, which significantly increased microbial alpha diversity and fecal short-chain fatty acids compared to the placebo. The remaining vitamins tested showed similar effects on microbial diversity, composition, and/or metabolic activity in vitro, but in varying degrees. Here, we showed that vitamins may modulate the human gut microbiome. Follow-up studies investigating targeted delivery of vitamins to the colon may help clarify the clinical significance of this novel concept for treating and preventing dysbiotic microbiota-related human diseases. Trial registration: ClinicalTrials.gov, NCT03668964. Registered 13 September 2018 - Retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT03668964.
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Affiliation(s)
- Van T. Pham
- R&D Human Nutrition and Health, DSM Nutritional Products Ltd., Basel, Switzerland,CONTACT Van T. Pham Wurmisweg 576, 4303 Kaiseraugst203/117A+41 618 158 828
| | - Sophie Fehlbaum
- R&D Human Nutrition and Health, DSM Nutritional Products Ltd., Basel, Switzerland
| | - Nicole Seifert
- R&D Human Nutrition and Health, DSM Nutritional Products Ltd., Basel, Switzerland
| | - Nathalie Richard
- R&D Human Nutrition and Health, DSM Nutritional Products Ltd., Basel, Switzerland
| | - Maaike J. Bruins
- R&D Human Nutrition and Health, DSM Nutritional Products Ltd., Basel, Switzerland
| | - Wilbert Sybesma
- R&D Human Nutrition and Health, DSM Nutritional Products Ltd., Basel, Switzerland
| | - Ateequr Rehman
- R&D Human Nutrition and Health, DSM Nutritional Products Ltd., Basel, Switzerland
| | - Robert E. Steinert
- R&D Human Nutrition and Health, DSM Nutritional Products Ltd., Basel, Switzerland,Department of Surgery, Division of Visceral and Transplantation Surgery, University Hospital Zurich, Zurich, Switzerland
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7
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Brett BE, Koko BK, Doumbia HOY, Koffi FK, Assa SE, Zahé KYAS, Faye-Ketté H, Kati-Coulibaly S, Kort R, Sybesma W, Reid G, de Weerth C. Salivary biomarkers of stress and inflammation in first graders in Côte d'Ivoire: Effects of a probiotic food intervention. Psychoneuroendocrinology 2021; 129:105255. [PMID: 34020263 DOI: 10.1016/j.psyneuen.2021.105255] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 04/26/2021] [Accepted: 05/02/2021] [Indexed: 12/16/2022]
Abstract
This semi-randomized controlled trial examined the effects of a probiotic food supplement on cortisol and C-reactive protein (CRP) in a sample of 262 four-to seven-year-old children (56% girls) in two economically-disadvantaged schools in an urban setting in Côte d'Ivoire. For one semester, children in one school were randomized to receive a probiotic (N = 79) or placebo (N = 85) fermented dairy food each day they attended school; one child (due to medical reasons) and all children in the other school (N = 98) continued their diets as usual. Children provided two saliva samples at 11:30 on consecutive days at the end of the study. Analyses revealed that the probiotic group had lower cortisol than the placebo or diet-as-usual groups (p = .015); CRP levels were comparable across groups (p = .549). Exploratory analyses suggested that dose and regularity of consumption may impact the biomarkers as well. This study provides the first evidence that a probiotic milk product may lower cortisol in a sample of young, economically-disadvantaged children.
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Affiliation(s)
- Bonnie E Brett
- Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience, Radboud University Medical Center, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands.
| | - Bruno K Koko
- UFR Biosciences, Université Félix Houghouët-Boigny, 01 BP V34 Abidjan, Côte d'Ivoire.
| | - Habib O Y Doumbia
- UFR Biosciences, Université Félix Houghouët-Boigny, 01 BP V34 Abidjan, Côte d'Ivoire.
| | | | - Savorgnan E Assa
- UFR Biosciences, Université Félix Houghouët-Boigny, 01 BP V34 Abidjan, Côte d'Ivoire.
| | - Kollet Y A S Zahé
- UFR Biosciences, Université Félix Houghouët-Boigny, 01 BP V34 Abidjan, Côte d'Ivoire.
| | - Hortense Faye-Ketté
- UFR Biosciences, Université Félix Houghouët-Boigny, 01 BP V34 Abidjan, Côte d'Ivoire; Institut Pasteur de Côte d'Ivoire, Abidjan, Cocody, CHU, Côte d'Ivoire.
| | - Séraphin Kati-Coulibaly
- UFR Biosciences, Université Félix Houghouët-Boigny, 01 BP V34 Abidjan, Côte d'Ivoire; Institut Pasteur de Côte d'Ivoire, Abidjan, Cocody, CHU, Côte d'Ivoire.
| | - Remco Kort
- Yoba For Life Foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands; Department of Molecular Cell Biology, Vrije Universiteit Amsterdam, De Boelelaan 1105, 1081 HV Amsterdam, The Netherlands.
| | - Wilbert Sybesma
- Yoba For Life Foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands.
| | - Gregor Reid
- Lawson Health Research Institute and Western University, 268 Grosvenor St, London, ON N6A 4V2, Canada.
| | - Carolina de Weerth
- Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience, Radboud University Medical Center, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands.
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Affiliation(s)
- Gregor Reid
- Lawson Health Research Institute, London, Ontario, Canada.,Departments of Microbiology & Immunology and Surgery, Western University, London, Ontario, Canada
| | | | | | - Arnold Onyango
- Jomo Kenyatta University of Agriculture and Technology, Kenya
| | - Nieke Westerik
- Yoba for Life Foundation, Amsterdam, the Netherlands.,VU University Amsterdam, the Netherlands
| | - Remco Kort
- Yoba for Life Foundation, Amsterdam, the Netherlands.,VU University Amsterdam, the Netherlands.,ARTIS-Micropia, Amsterdam, the Netherlands
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Westerik N, Nelson A, Wacoo AP, Sybesma W, Kort R. A Comparative Interrupted Times Series on the Health Impact of Probiotic Yogurt Consumption Among School Children From Three to Six Years Old in Southwest Uganda. Front Nutr 2020; 7:574792. [PMID: 33363193 PMCID: PMC7756026 DOI: 10.3389/fnut.2020.574792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 11/19/2020] [Indexed: 12/12/2022] Open
Abstract
Introduction: Following a school milk feeding program in Southwest Uganda, we initiated a probiotic yogurt school feeding program in the same region in 2018. In order to investigate the potential health benefits from probiotic yogurt we conducted an observational study, where we compared the effect of the consumption of locally produced probiotic yogurt containing Lactobacillus rhamnosus yoba 2012 to milk in pre-primary schoolchildren from different schools on the occurrence of respiratory tract infections (common cold) and skin infections (e.g., tinea capitis). Method: A comparative interrupted time series over a period of 3 weeks of baseline followed by 9 weeks of 100 ml of probiotic yogurt or milk consumption for 5 days per week. In total 584 children attending five different schools were followed during consumption of probiotic yogurt and 532 children attending five other schools during consumption of milk. Incidences of respiratory tract infection symptoms and skin infection symptoms, changes in anthropometric indicators and absenteeism were recorded. Results: Over the course of the study period the incidence rate for common cold symptoms decreased faster in the yogurt group than in the milk group (p = 0.09) resulting in a final RR of 0.85 (95% CI: 0.5–1.4) at the end of the observational period. The incidence rate of skin infection related symptoms also reduced faster in the yogurt group compared to the milk group (p < 0.0001) resulting in a relative risk factor (RR) of 0.6 (CI: 0.4–0.9) at the end of the observational period. Anthropometric indicators and level of absenteeism did not show significant differences between yogurt and milk. Conclusion: Notwithstanding the observed positive trend and effect of probiotic yogurt on the incidences of common cold and skin infections, respectively, we consider the results of this comparative interrupted time series inconclusive due to differences in the recorded health parameters between the probiotic yogurt and milk control groups at base line, and fluctuations over the course of the intervention period. An improved study design, with more uniform study groups, a longer intervention period and a third control group without yogurt or milk is required to draw definitive conclusions.
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Affiliation(s)
- Nieke Westerik
- Yoba for Life Foundation, Amsterdam, Netherlands.,Department of Molecular Cell Biology, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | | | - Alex Paul Wacoo
- Yoba for Life Foundation, Amsterdam, Netherlands.,Department of Molecular Cell Biology, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Department of Food Technology and Nutrition, School of Food Technology Nutrition and Bioengineering, College of Agricultural and Environmental Sciences, Makerere University, Kampala, Uganda
| | | | - Remco Kort
- Yoba for Life Foundation, Amsterdam, Netherlands.,Department of Molecular Cell Biology, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
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10
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Leitner L, Ujmajuridze A, Chanishvili N, Goderdzishvili M, Chkonia I, Rigvava S, Chkhotua A, Changashvili G, McCallin S, Schneider MP, Liechti MD, Mehnert U, Bachmann LM, Sybesma W, Kessler TM. Intravesical bacteriophages for treating urinary tract infections in patients undergoing transurethral resection of the prostate: a randomised, placebo-controlled, double-blind clinical trial. Lancet Infect Dis 2020; 21:427-436. [PMID: 32949500 DOI: 10.1016/s1473-3099(20)30330-3] [Citation(s) in RCA: 139] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/25/2020] [Accepted: 04/16/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Urinary tract infections (UTIs) are among the most prevalent microbial diseases and their financial burden on society is substantial. In the context of increasing antibiotic resistance, finding alternative treatments for UTIs is a top priority. We aimed to determine whether intravesical bacteriophage therapy with a commercial bacteriophage cocktail is effective in treating UTI. METHODS We did a randomised, placebo-controlled, clinical trial, at the Alexander Tsulukidze National Centre of Urology, Tbilisi, Georgia. Men older than 18 years of age, who were scheduled for transurethral resection of the prostate (TURP), with complicated UTI or recurrent uncomplicated UTI but no signs of systemic infection, were allocated by block randomisation in a 1:1:1 ratio to receive intravesical Pyo bacteriophage (Pyophage; 20 mL) or intravesical placebo solution (20 mL) in a double-blind manner twice daily for 7 days, or systemically applied antibiotics (according to sensitivities) as an open-label standard-of-care comparator. Urine culture was taken via urinary catheter at the end of treatment (ie, day 7) or at withdrawal from the trial. The primary outcome was microbiological treatment response after 7 days of treatment, measured by urine culture; secondary outcomes included clinical and safety parameters during the treatment period. Analyses were done in a modified intention-to-treat population of patients having received at least one dose of the allocated treatment regimen. This trial is registered with ClinicalTrials.gov, NCT03140085. FINDINGS Between June 2, 2017, and Dec 14, 2018, 474 patients were screened for eligibility and 113 (24%) patients were randomly assigned to treatment (37 to Pyophage, 38 to placebo, and 38 to antibiotic treatment). 97 patients (28 Pyophage, 32 placebo, 37 antibiotics) received at least one dose of their allocated treatment and were included in the primary analysis. Treatment success rates did not differ between groups. Normalisation of urine culture was achieved in five (18%) of 28 patients in the Pyophage group compared with nine (28%) of 32 patients in the placebo group (odds ratio [OR] 1·60 [95% CI 0·45-5·71]; p=0·47) and 13 (35%) of 37 patients in the antibiotic group (2·66 [0·79-8·82]; p=0·11). Adverse events occurred in six (21%) of 28 patients in the Pyophage group compared with 13 (41%) of 32 patients in the placebo group (OR 0·36 [95% CI 0·11-1·17]; p=0·089) and 11 (30%) of 37 patients in the antibiotic group (0·66 [0·21-2·07]; p=0·47). INTERPRETATION Intravesical bacteriophage therapy was non-inferior to standard-of-care antibiotic treatment, but was not superior to placebo bladder irrigation, in terms of efficacy or safety in treating UTIs in patients undergoing TURP. Moreover, the bacteriophage safety profile seems to be favourable. Although bacteriophages are not yet a recognised or approved treatment option for UTIs, this trial provides new insight to optimise the design of further large-scale clinical studies to define the role of bacteriophages in UTI treatment. FUNDING Swiss Continence Foundation, the Swiss National Science Foundation, and the Swiss Agency for Development and Cooperation. TRANSLATIONS For the Georgian and German translations of the abstract see Supplementary Materials section.
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Affiliation(s)
- Lorenz Leitner
- Department of Neuro-Urology, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
| | | | - Nina Chanishvili
- Eliava Institute of Bacteriophage, Microbiology, and Virology, Tbilisi, Georgia
| | | | - Irina Chkonia
- Eliava Institute of Bacteriophage, Microbiology, and Virology, Tbilisi, Georgia
| | - Sophia Rigvava
- Eliava Institute of Bacteriophage, Microbiology, and Virology, Tbilisi, Georgia
| | - Archil Chkhotua
- Alexander Tsulukidze National Centre of Urology, Tbilisi, Georgia
| | | | - Shawna McCallin
- Department of Neuro-Urology, Balgrist University Hospital, University of Zürich, Zürich, Switzerland; Division of Infectious Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - Marc P Schneider
- Department of Neuro-Urology, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
| | - Martina D Liechti
- Department of Neuro-Urology, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
| | - Ulrich Mehnert
- Department of Neuro-Urology, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
| | | | - Wilbert Sybesma
- Department of Neuro-Urology, Balgrist University Hospital, University of Zürich, Zürich, Switzerland; Yoba for Life Foundation, Amsterdam, Netherlands
| | - Thomas M Kessler
- Department of Neuro-Urology, Balgrist University Hospital, University of Zürich, Zürich, Switzerland.
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11
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Wacoo AP, Atukunda P, Muhoozi G, Braster M, Wagner M, van den Broek TJ, Sybesma W, Westerberg AC, Iversen PO, Kort R. Aflatoxins: Occurrence, Exposure, and Binding to Lactobacillus Species from the Gut Microbiota of Rural Ugandan Children. Microorganisms 2020; 8:microorganisms8030347. [PMID: 32121365 PMCID: PMC7143030 DOI: 10.3390/microorganisms8030347] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 02/12/2020] [Accepted: 02/27/2020] [Indexed: 12/14/2022] Open
Abstract
Chronic exposure of children in sub-Saharan Africa to aflatoxins has been associated with low birth weight, stunted growth, immune suppression, and liver function damage. Lactobacillus species have been shown to reduce aflatoxin contamination during the process of food fermentation. Twenty-three Lactobacillus strains were isolated from fecal samples obtained from a cohort of rural Ugandan children at the age of 54 to 60 months, typed by 16S rRNA gene sequencing, and characterized in terms of their ability to bind aflatoxin B1 in vitro. Evidence for chronic exposure of these children to aflatoxin B1 in the study area was obtained by analysis of local foods (maize flour and peanuts), followed by the identification of the breakdown product aflatoxin M1 in their urine samples. Surprisingly, Lactobacillus in the gut microbiota of 140 children from the same cohort at 24 and 36 months showed the highest positive correlation coefficient with stunting among all bacterial genera identified in the stool samples. This correlation was interpreted to be associated with dietary changes from breastfeeding to plant-based solid foods that pose an additional risk for aflatoxin contamination, on one hand, and lead to increased intake of Lactobacillus species on the other.
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Affiliation(s)
- Alex Paul Wacoo
- Department of Molecular Cell Biology, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands; (A.P.W.); (M.B.); (M.W.)
- Yoba for Life foundation, 1079 WB Amsterdam, The Netherlands;
- Department of Medical Biochemistry, School of Biomedical Sciences, College of Health Sciences, Makerere University, P.O. Box 7062 Kampala, Uganda
| | - Prudence Atukunda
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, 0317 Oslo, Norway; (P.A.); (P.O.I.)
| | - Grace Muhoozi
- Department of Human Nutrition and Home Economics, Kyambogo University, P.O. Box 1 Kampala, Uganda;
| | - Martin Braster
- Department of Molecular Cell Biology, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands; (A.P.W.); (M.B.); (M.W.)
| | - Marijke Wagner
- Department of Molecular Cell Biology, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands; (A.P.W.); (M.B.); (M.W.)
| | - Tim J van den Broek
- Department of Microbiology and Systems Biology, TNO, 3704 HE Zeist, The Netherlands;
| | - Wilbert Sybesma
- Yoba for Life foundation, 1079 WB Amsterdam, The Netherlands;
| | - Ane C. Westerberg
- Institute of Health Sciences, Kristiania University College, 0107 Oslo, Norway;
| | - Per Ole Iversen
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, 0317 Oslo, Norway; (P.A.); (P.O.I.)
- Division of Human Nutrition, Stellenbosch University, Tygerberg, 7505 Cape Town, South Africa
- Department of Hematology, Oslo University Hospital, 0318 Oslo, Norway
| | - Remco Kort
- Department of Molecular Cell Biology, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands; (A.P.W.); (M.B.); (M.W.)
- Yoba for Life foundation, 1079 WB Amsterdam, The Netherlands;
- ARTIS-Micropia, 1018 CZ Amsterdam, The Netherlands
- Correspondence: ; Tel.: +31-625056191
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12
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Abstract
A main target in microbiome research is the understanding and ability to safely and effectively modulate the microbiome to improve health. Hereto, we discuss the role of vitamins in relation to the gut microbiome and present a rationale for the modulation of gut microbial communities via selected systemic and colon-targeted vitamin administration.
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Affiliation(s)
- Robert E Steinert
- Human Nutrition and Health, DSM Nutritional Products Ltd, Basel, Switzerland; Department of Surgery, Division of Visceral and Transplantation Surgery, University Hospital Zürich, 8091 Zürich, Switzerland
| | - Yuan-Kun Lee
- Department of Microbiology and Immunology, Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, 5 Science Drive 2, 117597, Singapore
| | - Wilbert Sybesma
- Human Nutrition and Health, DSM Nutritional Products Ltd, Basel, Switzerland; Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands.
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13
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Wacoo AP, Mukisa IM, Meeme R, Byakika S, Wendiro D, Sybesma W, Kort R. Probiotic Enrichment and Reduction of Aflatoxins in a Traditional African Maize-Based Fermented Food. Nutrients 2019; 11:E265. [PMID: 30691002 PMCID: PMC6412935 DOI: 10.3390/nu11020265] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 12/29/2018] [Accepted: 01/23/2019] [Indexed: 11/17/2022] Open
Abstract
Fermentation of food products can be used for the delivery of probiotic bacteria and means of food detoxification, provided that probiotics are able to grow, and toxins are reduced in raw materials with minimal effects on consumer acceptability. This study evaluated probiotic enrichment and detoxification of kwete, a commonly consumed traditional fermented cereal beverage in Uganda, by the use of starter culture with the probiotic Lactobacillus rhamnosus yoba 2012 and Streptococcus thermophilus C106. Probiotic kwete was produced by fermenting a suspension of ground maize grain at 30 °C for a period of 24 h, leading to a decrease of the pH value to ≤ 4.0 and increase in titratable acidity of at least 0.2% (w/v). Probiotic kwete was acceptable to the consumers with a score of ≥6 on a 9-point hedonic scale. The products were stable over a month's study period with a mean pH of 3.9, titratable acidity of 0.6% (w/v), and Lactobacillus rhamnosus counts >10⁸ cfu g-1. HPLC analysis of aflatoxins of the water-soluble fraction of kwete indicated that fermentation led to an over 1000-fold reduction of aflatoxins B₁, B₂, G₁, and G₂ spiked in the raw ingredients. In vitro fluorescence spectroscopy confirmed binding of aflatoxin B₁ to Lactobacillus rhamnosus with an efficiency of 83.5%. This study shows that fermentation is a means to enrich with probiotics and reduce widely occurring aflatoxin contamination of maize products that are consumed as staple foods in sub-Saharan Africa.
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Affiliation(s)
- Alex Paul Wacoo
- Department of Molecular Cell Biology, VU University Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands.
- Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands.
- Department of Nursing, Muni University, P.O. Box 725 Arua, Uganda.
| | - Ivan Muzira Mukisa
- Department of Food Technology and Nutrition, School of Food Technology Nutrition and Bioengineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. Box 7062 Kampala, Uganda.
| | - Rehema Meeme
- Department of Food Technology and Nutrition, School of Food Technology Nutrition and Bioengineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. Box 7062 Kampala, Uganda.
- Food and Agriculture Division, Standards Department, Uganda National Bureau of Standards, P.O. Box 6329 Kampala, Uganda.
| | - Stellah Byakika
- Department of Food Technology and Nutrition, School of Food Technology Nutrition and Bioengineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. Box 7062 Kampala, Uganda.
| | - Deborah Wendiro
- Department of Microbiology and Biotechnology, Product Development Directorate, Uganda Industrial Research Institute, P.O. Box 7086 Kampala, Uganda.
| | - Wilbert Sybesma
- Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands.
| | - Remco Kort
- Department of Molecular Cell Biology, VU University Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands.
- Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands.
- TNO, Microbiology and Systems Biology, Utrechtseweg 48, 3704 HE Zeist, The Netherlands.
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14
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Parker M, Zobrist S, Donahue C, Edick C, Mansen K, Hassan Zade Nadjari M, Heerikhuisen M, Sybesma W, Molenaar D, Diallo AM, Milani P, Kort R. Naturally Fermented Milk From Northern Senegal: Bacterial Community Composition and Probiotic Enrichment With Lactobacillus rhamnosus. Front Microbiol 2018; 9:2218. [PMID: 30298060 PMCID: PMC6160551 DOI: 10.3389/fmicb.2018.02218] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 08/30/2018] [Indexed: 12/29/2022] Open
Abstract
A variety of foods fermented with lactic acid bacteria serve as dietary staples in many African communities; yet, their bacterial profiles are poorly characterized. The integration of health-promoting probiotics into naturally fermented milk products could make a profound impact on human health. Here, we characterize the bacterial community composition of a naturally fermented milk product (lait caillé) from northern Senegal, prepared in wooden bowls (lahals) with a bacterial biofilm to steer the fermentation process. We incorporated a probiotic starter culture containing the most documented probiotic strain Lactobacillus rhamnosus GG (generic strain name yoba 2012) into the local fermentation process. Bar-coded 16S rRNA amplicon sequencing of lait caillé samples indicated that the bacterial community of lait caillé has high species richness with over 100 bacterial genera; however, few have high abundance. In contrast to the diverse bacterial compositions of other characterized naturally fermented milk products, the composition of lait caillé predominantly consists of the lactic acid bacteria Streptococcus and Lactobacillus, resembling the bacterial composition in regular yogurt. The bacterial community composition of lait caillé varies geographically based on the presence of some genera, including Lactoccoccus, Enterococcus, Bifidobacterium, and Bacillus, but this trend is not consistent within production communities. The diversity of bacterial communities is much higher in the lahal biofilm than in the naturally fermented milk products, which is in turn greater than in commercial yogurts. Addition of a starter culture with L. rhamnosus yoba 2012 to milk in lahals led to substantial growth of this probiotic bacterium during the fermentation process. Two independent quantitative PCR-analyses specific for L. rhamnosus yoba 2012 indicated a 20- to 60-fold increase in the total number of probiotic bacteria in the first batch after inoculation. A similar increase of the probiotic was observed in a variation of lait caillé prepared with carbohydrate-rich millet granules (thiakry) added prior to fermentation. This study shows the feasibility of integrating health-promoting probiotic strains into naturally fermented foods produced in regions with a high prevalence of malnutrition.
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Affiliation(s)
| | | | | | | | | | - Mehdi Hassan Zade Nadjari
- Microbiology and Systems Biology, Netherlands Organization for Applied Scientific Research (TNO), Amsterdam, Netherlands
| | - Margreet Heerikhuisen
- Microbiology and Systems Biology, Netherlands Organization for Applied Scientific Research (TNO), Amsterdam, Netherlands
| | | | - Douwe Molenaar
- Department of Molecular Cell Biology, VU University Amsterdam, Amsterdam, Netherlands
| | - Abdoulaye Moussa Diallo
- Department of Sociology, Université Cheikh Anta Diop de Dakar, Dakar, Senegal.,Helite SARL, Dakar, Senegal
| | | | - Remco Kort
- Microbiology and Systems Biology, Netherlands Organization for Applied Scientific Research (TNO), Amsterdam, Netherlands.,Yoba for Life Foundation, Amsterdam, Netherlands.,Department of Molecular Cell Biology, VU University Amsterdam, Amsterdam, Netherlands.,ARTIS-Micropia, Amsterdam, Netherlands
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15
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Reid G, Kort R, Alvarez S, Bourdet-Sicard R, Benoit V, Cunningham M, Saulnier D, van Hylckama Vlieg J, Verstraelen H, Sybesma W. Expanding the reach of probiotics through social enterprises. Benef Microbes 2018; 9:707-715. [DOI: 10.3920/bm2018.0015] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The rapid rise in microbiome and probiotic science has led to estimates of product creation and sales exceeding $50 billion within five years. However, many people do not have access to affordable products, and regulatory agencies have stifled progress. The objective of a discussion group at the 2017 meeting of the International Scientific Association for Probiotics and Prebiotics was to identify mechanisms to confer the benefits of probiotics to a larger portion of the world’s population. Three initiatives, built around fermented food, were discussed with different methods of targeting populations that face enormous challenges of malnutrition, infectious disease, poverty and violent conflict. As new candidate probiotic strains emerge, and the market diversifies towards more personalised interventions, manufacturing processes will need to evolve. Information dissemination through scientific channels and social media is projected to provide consumers and healthcare providers with rapid access to clinical results, and to identify the nearest location of sites making new and affordable probiotic food and supplements. This rapid translation of science to individual well-being will not only expand the beneficiaries of probiotics, but also fuel new social enterprises and economic business models.
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Affiliation(s)
- G. Reid
- Canadian Research and Development Centre for Probiotics, Microbiology & Immunology, and Surgery, University of Western Ontario, Room F3-106, P.O. Box 5777, STN B, London, N6A 4V2 Ontario, Canada
| | - R. Kort
- Yoba for Life foundation, Hunzestraat 133-A, 1079 WB Amsterdam, the Netherlands
- TNO Microbiology and Systems Biology, P.O. Box 360, 3700 AJ Zeist, the Netherlands
- VU University Amsterdam; Micropia, Natura Artis Magistra, Plantage Kerklaan 38-40, 1018 CZ Amsterdam, the Netherlands
| | - S. Alvarez
- Reference Centre for Lactobacilli (CERELA-CONICET), Chacabuco 145, Tucuman 4000, Argentina
| | - R. Bourdet-Sicard
- Danone Access, Africa & India, Danone Nutricia Research, Avenue de la Vauve, 91767 Palaiseau, France
| | - V. Benoit
- General Mills, Nutrition and Technology Solutions, 9000 Plymouth Avenue N, Minneapolis, MN 55427, USA
| | - M. Cunningham
- Research and Development, Metagenics (Aust) Pty Ltd., P.O. Box 675, Virginia BC, Queensland 4014, Australia
| | - D.M. Saulnier
- Novozymes A/S, Hillerødgade 42, 2200 Frederiksberg, Denmark
| | | | - H. Verstraelen
- Vulvovaginal Disease Clinic, Dept. of Obstetrics & Gynaecology, Ghent University Hospital 0P4, Corneel Heymanslaan 10, 9000 Gent, Belgium
| | - W. Sybesma
- Yoba for Life foundation, Hunzestraat 133-A, 1079 WB Amsterdam, the Netherlands
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16
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Westerik N, Reid G, Sybesma W, Kort R. The Probiotic Lactobacillus rhamnosus for Alleviation of Helicobacter pylori-Associated Gastric Pathology in East Africa. Front Microbiol 2018; 9:1873. [PMID: 30154777 PMCID: PMC6102400 DOI: 10.3389/fmicb.2018.01873] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 07/25/2018] [Indexed: 12/16/2022] Open
Abstract
The probiotic Lactobacillus rhamnosus GG (LGG) can play a role in establishing a harmless relationship with Helicobacter pylori and reduce gastric pathology in East African populations. H. pylori has the ability to inhabit the surface of the mucous layer of the human stomach and duodenum. In the developing world, an estimated 51% of the population is carrier of H. pylori, while in some Western countries these numbers dropped below 20%, which is probably associated with improved sanitation and smaller family sizes. Colonization by H. pylori can be followed by inflammation of the gastric mucus layer, and is a risk factor in the development of atrophic gastritis, peptic ulcers and gastric cancer. Notwithstanding the higher prevalence of H. pylori carriers in developing countries, no equal overall increase in gastric pathology is found. This has been attributed to a less pro-inflammatory immune response to H. pylori in African compared to Caucasian populations. In addition, a relatively low exposure to other risk factors in certain African populations may play a role, including the use of non-steroidal anti-inflammatory drugs, smoking, and diets without certain protective factors. A novel approach to the reduction of H. pylori associated gastric pathology is found in the administration of the probiotic bacterium Lactobacillus rhamnosus yoba 2012 (LRY), the generic variant of LGG. This gastro-intestinal isolate inhibits H. pylori by competition for substrate and binding sites as well as production of antimicrobial compounds such as lactic acid. In addition, it attenuates the host's H. pylori-induced apoptosis and inflammation responses and stimulates angiogenesis in the gastric and duodenal epithelium. The probiotic LRY is not able to eradicate H. pylori completely, but its co-supplementation in antibiotic eradication therapy has been shown to relieve side effects of this therapy. In Uganda, unlike other African countries, gastric pathology is relatively common, presumably resulting from the lack of dietary protective factors in the traditional diet. Supplementation with LRY through local production of probiotic yogurt, could be a solution to establish a harmless relationship with H. pylori and reduce gastric pathology and subsequent eradication therapy treatment.
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Affiliation(s)
- Nieke Westerik
- Department of Molecular Cell Biology, VU University Amsterdam, Amsterdam, Netherlands
- Yoba for Life Foundation, Amsterdam, Netherlands
| | - Gregor Reid
- Canadian R&D Centre for Human Microbiome and Probiotics, Lawson Health Research Institute, London, ON, Canada
- Department of Microbiology and Immunology, and Surgery, Western University, London, ON, Canada
| | | | - Remco Kort
- Department of Molecular Cell Biology, VU University Amsterdam, Amsterdam, Netherlands
- Yoba for Life Foundation, Amsterdam, Netherlands
- Department of Microbiology and Systems Biology, Netherlands Organization for Applied Scientific Research, Zeist, Netherlands
- ARTIS-Micropia, Amsterdam, Netherlands
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17
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Paul Wacoo A, Wendiro D, Nanyonga S, Hawumba JF, Sybesma W, Kort R. Feasibility of A Novel On-Site Detection Method for Aflatoxin in Maize Flour from Markets and Selected Households in Kampala, Uganda. Toxins (Basel) 2018; 10:toxins10080327. [PMID: 30103499 PMCID: PMC6115733 DOI: 10.3390/toxins10080327] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/08/2018] [Accepted: 08/09/2018] [Indexed: 12/20/2022] Open
Abstract
In sub-Saharan Africa, there is a high demand for affordable and accessible methods for on-site detection of aflatoxins for appropriate food safety management. In this study, we validated an electrochemical immunosensor device by the on-site detection of 60 maize flour samples from six markets and 72 samples from households in Kampala. The immunosensor was successfully validated with a linear range from 0.7 ± 0.1 to 11 ± 0.3 µg/kg and limit of detection (LOD) of 0.7 µg/kg. The maize flour samples from the markets had a mean total aflatoxin concentration of 7.6 ± 2.3 µg/kg with approximately 20% of the samples higher than 10 µg/kg, which is the maximum acceptable level in East Africa. Further down the distribution chain, at the household level, approximately 45% of the total number contained total aflatoxin levels higher than the acceptable limit. The on-site detection method correlated well with the established laboratory-based HPLC and ELISA-detection methods for aflatoxin B1 with the correlation coefficients of 0.94 and 0.98, respectively. This study shows the feasibility of a novel on-site detection method and articulates the severity of aflatoxin contamination in Uganda.
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Affiliation(s)
- Alex Paul Wacoo
- Department of Molecular Cell Biology, VU University Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands.
- Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands.
- Department of Nursing, Muni University, P.O. Box 725 Arua, Uganda.
| | - Deborah Wendiro
- Department of Microbiology and Biotechnology Centre, Product Development Directory, Uganda Industrial Research Institute, P.O. Box 7086 Kampala, Uganda.
| | - Sarah Nanyonga
- Department of Chemistry, Faculty of Science, Kyambogo University, P.O. Box 1 Kyambogo, Uganda.
| | - Joseph F Hawumba
- Department of Biochemistry and Sports Science, School of Biological Sciences, College of Natural Sciences, Makerere University, P.O. Box 7082 Kampala, Uganda.
| | - Wilbert Sybesma
- Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands.
| | - Remco Kort
- Department of Molecular Cell Biology, VU University Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands.
- Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands.
- TNO, Microbiology and Systems Biology, Utrechtseweg 48, 3704 HE Zeist, The Netherlands.
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18
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Ujmajuridze A, Chanishvili N, Goderdzishvili M, Leitner L, Mehnert U, Chkhotua A, Kessler TM, Sybesma W. Adapted Bacteriophages for Treating Urinary Tract Infections. Front Microbiol 2018; 9:1832. [PMID: 30131795 PMCID: PMC6090023 DOI: 10.3389/fmicb.2018.01832] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 07/23/2018] [Indexed: 01/17/2023] Open
Abstract
Urinary tract infections (UTIs) are among the most widespread microbial diseases and their economic impact on the society is substantial. The continuing increase of antibiotic resistance worldwide is worrying. As a consequence, well-tolerated, highly effective therapeutic alternatives are without delay needed. Although it has been demonstrated that bacteriophage therapy may be effective and safe for treating UTIs, the number of studied patients is low and there is a lack of randomized controlled trials (RCTs). The present study has been designed as a two-phase prospective investigation: (1) bacteriophage adaptation, (2) treatment with the commercially available but adapted Pyo bacteriophage. The aim was to evaluate feasibility, tolerability, safety, and clinical/microbiological outcomes in a case series as a pilot for a double-blind RCT. In the first phase, patients planned for transurethral resection of the prostate were screened (n = 130) for UTIs and enrolled (n = 118) in the study when the titer of predefined uropathogens (Staphylococcus aureus, E. coli, Streptococcus spp., Pseudomonas aeruginosa, Proteus mirabilis) in the urine culture was ≥104 colony forming units/mL. In vitro analysis showed a sensitivity for uropathogenic bacteria to Pyo bacteriophage of 41% (48/118) and adaptation cycles of Pyo bacteriophage enhanced its sensitivity to 75% (88/118). In the second phase, nine patients were treated with adapted Pyo bacteriophage and bacteria titer decreased (between 1 and 5 log) in six of the nine patients (67%). No bacteriophage-associated adverse events have been detected. The findings of our prospective two-phase study suggest that adapted bacteriophage therapy might be effective and safe for treating UTIs. Thus, well-designed RCTs are highly warranted to further define the role of this potentially revolutionizing treatment option.
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Affiliation(s)
| | - Nina Chanishvili
- The George Eliava Institute of Bacteriophage, Microbiology and Virology, Tbilisi, Georgia
| | - Marina Goderdzishvili
- The George Eliava Institute of Bacteriophage, Microbiology and Virology, Tbilisi, Georgia
| | - Lorenz Leitner
- Department of Neuro-Urology, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - Ulrich Mehnert
- Department of Neuro-Urology, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - Archil Chkhotua
- The Alexander Tsulukidze National Center of Urology, Tbilisi, Georgia
| | - Thomas M. Kessler
- Department of Neuro-Urology, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - Wilbert Sybesma
- Department of Neuro-Urology, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
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Westerik N, Kort R, Sybesma W, Reid G. Lactobacillus rhamnosus Probiotic Food as a Tool for Empowerment Across the Value Chain in Africa. Front Microbiol 2018; 9:1501. [PMID: 30042747 PMCID: PMC6048217 DOI: 10.3389/fmicb.2018.01501] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 06/18/2018] [Indexed: 11/13/2022] Open
Abstract
Perhaps by serendipity, but Lactobacillus rhamnosus has emerged from the 1980s as the most researched probiotic species. The many attributes of the two main probiotic strains of the species, L. rhamnosus GG and GR-1, have made them suitable for applications to developing countries in Africa and beyond. Their use with a Streptococcus thermophilus starter strain C106, in the fermentation of milk, millet, and juices has provided a means to reach over 250,000 consumers of the first probiotic food on the continent. The social and economical implications for this translational research are significant, and especially pertinent for people living in poverty, with malnutrition and exposure to environmental toxins and infectious diseases including HIV and malaria. This example of probiotic applications illustrates the power of microbes in positively impacting the lives of women, men, and children, right across the food value chain.
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Affiliation(s)
- Nieke Westerik
- Yoba for Life foundation, Amsterdam, Netherlands.,Department of Molecular Cell Biology, VU University Amsterdam, Amsterdam, Netherlands
| | - Remco Kort
- Yoba for Life foundation, Amsterdam, Netherlands.,Department of Molecular Cell Biology, VU University Amsterdam, Amsterdam, Netherlands.,Department of Microbiology and Systems Biology, Netherlands Organization for Applied Scientific Research (TNO), Zeist, Netherlands
| | | | - Gregor Reid
- Canadian R&D Centre for Human Microbiome and Probiotics, Lawson Health Research Institute, London, ON, Canada.,Departments of Microbiology and Immunology, Surgery, Western University, London, ON, Canada
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20
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Sybesma W, Rohde C, Bardy P, Pirnay JP, Cooper I, Caplin J, Chanishvili N, Coffey A, De Vos D, Scholz AH, McCallin S, Püschner HM, Pantucek R, Aminov R, Doškař J, Kurtbӧke Dİ. Silk Route to the Acceptance and Re-Implementation of Bacteriophage Therapy-Part II. Antibiotics (Basel) 2018; 7:E35. [PMID: 29690620 PMCID: PMC6023077 DOI: 10.3390/antibiotics7020035] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 04/12/2018] [Accepted: 04/12/2018] [Indexed: 12/20/2022] Open
Abstract
This perspective paper follows up on earlier communications on bacteriophage therapy that we wrote as a multidisciplinary and intercontinental expert-panel when we first met at a bacteriophage conference hosted by the Eliava Institute in Tbilisi, Georgia in 2015. In the context of a society that is confronted with an ever-increasing number of antibiotic-resistant bacteria, we build on the previously made recommendations and specifically address how the Nagoya Protocol might impact the further development of bacteriophage therapy. By reviewing a number of recently conducted case studies with bacteriophages involving patients with bacterial infections that could no longer be successfully treated by regular antibiotic therapy, we again stress the urgency and significance of the development of international guidelines and frameworks that might facilitate the legal and effective application of bacteriophage therapy by physicians and the receiving patients. Additionally, we list and comment on several recently started and ongoing clinical studies, including highly desired double-blind placebo-controlled randomized clinical trials. We conclude with an outlook on how recently developed DNA editing technologies are expected to further control and enhance the efficient application of bacteriophages.
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Affiliation(s)
- Wilbert Sybesma
- Department of Neuro-Urology, Balgrist University Hospital, University of Zürich, CH-8008 Zürich, Switzerland.
- Nestlé Research Center, Nestec Ltd., Vers-chez-les-Blanc, CH-1000 Lausanne, Switzerland.
| | - Christine Rohde
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, D-38124 Braunschweig, Germany.
| | - Pavol Bardy
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno 611 37, Czech Republic.
| | - Jean-Paul Pirnay
- Laboratory for Molecular and Cellular Technology, Queen Astrid Military Hospital, B-1120 Brussels, Belgium.
| | - Ian Cooper
- School of Pharmacy and Biomolecular Sciences and School of Environment & Technology, University of Brighton, Brighton BN2 4GJ, UK.
| | - Jonathan Caplin
- School of Pharmacy and Biomolecular Sciences and School of Environment & Technology, University of Brighton, Brighton BN2 4GJ, UK.
| | - Nina Chanishvili
- Eliava Institute of Bacteriophage, Microbiology and Virology, Tbilisi 0160, Georgia.
| | - Aidan Coffey
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, Cork T12 P928, UK.
| | - Daniel De Vos
- Laboratory for Molecular and Cellular Technology, Queen Astrid Military Hospital, B-1120 Brussels, Belgium.
| | - Amber Hartman Scholz
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, D-38124 Braunschweig, Germany.
| | - Shawna McCallin
- Department of Fundamental Microbiology, University of Lausanne, CH-1015 Lausanne, Switzerland.
| | - Hilke Marie Püschner
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, D-38124 Braunschweig, Germany.
| | - Roman Pantucek
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno 611 37, Czech Republic.
| | - Rustam Aminov
- School of Medicine & Dentistry, University of Aberdeen, Aberdeen AB25 2ZD, UK.
| | - Jiří Doškař
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno 611 37, Czech Republic.
| | - D İpek Kurtbӧke
- GeneCology Research Centre and the Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore DC, QLD 4558, Australia.
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Leitner L, Sybesma W, Chanishvili N, Goderdzishvili M, Chkhotua A, Ujmajuridze A, Schneider MP, Sartori A, Mehnert U, Bachmann LM, Kessler TM. Bacteriophages for treating urinary tract infections in patients undergoing transurethral resection of the prostate: a randomized, placebo-controlled, double-blind clinical trial. BMC Urol 2017; 17:90. [PMID: 28950849 PMCID: PMC5615798 DOI: 10.1186/s12894-017-0283-6] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 09/21/2017] [Indexed: 02/05/2023] Open
Abstract
Background Urinary tract infections (UTI) are among the most prevalent microbial diseases and their financial burden on society is substantial. The continuing increase of antibiotic resistance worldwide is alarming. Thus, well-tolerated, highly effective therapeutic alternatives are urgently needed. Although there is evidence indicating that bacteriophage therapy may be effective and safe for treating UTIs, the number of investigated patients is low and there is a lack of randomized controlled trials. Methods and design This study is the first randomized, placebo-controlled, double-blind trial investigating bacteriophages in UTI treatment. Patients planned for transurethral resection of the prostate are screened for UTIs and enrolled if in urine culture eligible microorganisms ≥104 colony forming units/mL are found. Patients are randomized in a double-blind fashion to the 3 study treatment arms in a 1:1:1 ratio to receive either: a) bacteriophage (i.e. commercially available Pyo bacteriophage) solution, b) placebo solution, or c) antibiotic treatment according to the antibiotic sensitivity pattern. All treatments are intended for 7 days. No antibiotic prophylaxes will be given to the double-blinded treatment arms a) and b). As common practice, the Pyo bacteriophage cocktail is subjected to periodic adaptation cycles during the study. Urinalysis, urine culture, bladder and pain diary, and IPSS questionnaire will be completed prior to and at the end of treatment (i.e. after 7 days) or at withdrawal/drop out from the study. Patients with persistent UTIs will undergo antibiotic treatment according to antibiotic sensitivity pattern. Discussion Based on the high lytic activity and the potential of resistance optimization by direct adaptation of bacteriophages, and considering the continuing increase of antibiotic resistance worldwide, bacteriophage therapy is a very promising treatment option for UTIs. Thus, our randomized controlled trial investigating bacteriophages for treating UTIs will provide essential insights into this potentially revolutionizing treatment option. Trial registration This study has been registered at clinicaltrials.gov (www.clinicaltrials.gov/ct2/show/NCT03140085). April 27, 2017.
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Affiliation(s)
- Lorenz Leitner
- Neuro-Urology, Spinal Cord Injury Center & Research, University of Zürich, Balgrist University Hospital, Zürich, Switzerland.,Department of Urology, University Hospital Basel, Basel, Switzerland
| | - Wilbert Sybesma
- Neuro-Urology, Spinal Cord Injury Center & Research, University of Zürich, Balgrist University Hospital, Zürich, Switzerland
| | - Nina Chanishvili
- The Eliava Institute of Bacteriophage, Microbiology, and Virology, Tbilisi, Georgia
| | | | | | | | - Marc P Schneider
- Neuro-Urology, Spinal Cord Injury Center & Research, University of Zürich, Balgrist University Hospital, Zürich, Switzerland
| | - Andrea Sartori
- Neuro-Urology, Spinal Cord Injury Center & Research, University of Zürich, Balgrist University Hospital, Zürich, Switzerland
| | - Ulrich Mehnert
- Neuro-Urology, Spinal Cord Injury Center & Research, University of Zürich, Balgrist University Hospital, Zürich, Switzerland
| | | | - Thomas M Kessler
- Neuro-Urology, Spinal Cord Injury Center & Research, University of Zürich, Balgrist University Hospital, Zürich, Switzerland.
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Sybesma W, Blank I, Lee YK. Sustainable Food Processing Inspired by Nature. Trends Biotechnol 2017; 35:279-281. [DOI: 10.1016/j.tibtech.2017.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/25/2017] [Accepted: 02/01/2017] [Indexed: 12/25/2022]
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Aminov R, Caplin J, Chanishvili N, Coffey A, Cooper I, De Vos D, Doškař J, Friman VP, Kurtböke İ, Pantucek R, Pirnay JP, Resch G, Rohde C, Sybesma W, Wittmann J. Application of bacteriophages. Microbiol Aust 2017. [DOI: 10.1071/ma17029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The emergence of antibiotic-resistant bacteria and decrease in the discovery rate of novel antibiotics takes mankind back to the ‘pre-antibiotic era' and search for alternative treatments. Bacteriophages have been one of promising alternative agents which can be utilised for medicinal and biological control purposes in agriculture and related fields. The idea to treat bacterial infections with phages came out of the pioneering work of Félix d‘Hérelle but this was overshadowed by the success of antibiotics. Recent renewed interest in phage therapy is dictated by its advantages most importantly by their specificity against the bacterial targets. This prevents complications such as antibiotic-induced dysbiosis and secondary infections. This article is compiled by the participants of the Expert Round Table conference ‘Bacteriophages as tools for therapy, prophylaxis and diagnostics' (19–21 October 2015) at the Eliava Institute of Bacteriophage, Microbiology and Virology, Tbilisi, Georgia. The first paper from the Round Table was published in the Biotechnology Journal1. This In Focus article expands from this paper and includes recent developments reported since then by the Expert Round Table participants, including the implementation of the Nagoya Protocol for the applications of bacteriophages.
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Abstract
A novel dried bacterial consortium of Lactobacillus rhamnosus yoba 2012 and Streptococcus thermophilus C106 is cultured in 1 L of milk. This fresh starter can be used for the production of fermented milk and other fermented foods either at home or at small-scale in rural settings. For the fresh starter, 1 L of milk is pasteurized in a pan that fits into a larger pan containing water, placed on a source of heat. In this water bath, the milk is heated and incubated at 85 °C for 30 min. Thereafter, the milk is cooled down to 45 °C, transferred to a vacuum flask, inoculated with the dried bacteria and left for at least 16 hr between 30 °C and 45 °C. For the purpose of frequent home production, the fresh starter is frozen into ice cubes, which can be used for the production of small volumes of up to 2 L of fermented milk. For the purpose of small-scale production in resource-poor countries, pasteurization of up to 100 L of milk is conducted in milk cans that are placed in a large sauce pan filled with water and heated on a fire at 85 °C for 30 min, and subsequently cooled to 45 °C. Next, the 100 L batch is inoculated with the 1 L freshly prepared starter mentioned before. To assure an effective fermentation at a temperature between 30 and 45 °C, the milk can is covered with a blanket for 12 hr. For the production of non-dairy fermented foods, the fresh starter is left in a cheese cloth for 12 hr, and the drained-off whey can be subsequently used for the inoculation of a wide range of food raw materials, including vegetables and cereal-based foods.
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Affiliation(s)
- Nieke Westerik
- Yoba for Life Foundation; Department of Molecular Cell Biology, Vrije Universiteit Amsterdam (VUA)
| | - Alex Paul Wacoo
- Yoba for Life Foundation; Department of Molecular Cell Biology, Vrije Universiteit Amsterdam (VUA); Uganda Industrial Research Institute (UIRI)
| | | | - Remco Kort
- Yoba for Life Foundation; Department of Molecular Cell Biology, Vrije Universiteit Amsterdam (VUA); Micropia, Natura Artis Magistra; Department of Microbiology and Systems Biology, Netherlands Organisation for Applied Scientific Research (TNO);
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25
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Sybesma W, Zbinden R, Chanishvili N, Kutateladze M, Chkhotua A, Ujmajuridze A, Mehnert U, Kessler TM. Bacteriophages as Potential Treatment for Urinary Tract Infections. Front Microbiol 2016; 7:465. [PMID: 27148173 PMCID: PMC4826877 DOI: 10.3389/fmicb.2016.00465] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 03/21/2016] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Urinary tract infections (UTIs) are among the most prevalent microbial diseases and their financial burden on society is substantial. The continuing increase of antibiotic resistance worldwide is alarming so that well-tolerated, highly effective therapeutic alternatives are urgently needed. OBJECTIVE To investigate the effect of bacteriophages on Escherichia coli and Klebsiella pneumoniae strains isolated from the urine of patients suffering from UTIs. MATERIAL AND METHODS Forty-one E. coli and 9 K. pneumoniae strains, isolated from the urine of patients suffering from UTIs, were tested in vitro for their susceptibility toward bacteriophages. The bacteriophages originated from either commercially available bacteriophage cocktails registered in Georgia or from the bacteriophage collection of the George Eliava Institute of Bacteriophage, Microbiology and Virology. In vitro screening of bacterial strains was performed by use of the spot-test method. The experiments were implemented three times by different groups of scientists. RESULTS The lytic activity of the commercial bacteriophage cocktails on the 41 E. coli strains varied between 66% (Pyo bacteriophage) and 93% (Enko bacteriophage). After bacteriophage adaptation of the Pyo bacteriophage cocktail, its lytic activity was increased from 66 to 93% and only one E. coli strain remained resistant. One bacteriophage of the Eliava collection could lyse all 9 K. pneumoniae strains. CONCLUSIONS Based on the high lytic activity and the potential of resistance optimization by direct adaption of bacteriophages as reported in this study, and in view of the continuing increase of antibiotic resistance worldwide, bacteriophage therapy is a promising treatment option for UTIs highly warranting randomized controlled trials.
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Affiliation(s)
- Wilbert Sybesma
- Neuro-Urology, Spinal Cord Injury Center and Research, University of Zürich, Balgrist University Hospital Zürich, Switzerland
| | - Reinhard Zbinden
- Institute of Medical Microbiology, University of Zürich Zürich, Switzerland
| | - Nino Chanishvili
- The Eliava Institute of Bacteriophage, Microbiology, and Virology Tbilisi, Georgia
| | - Mzia Kutateladze
- The Eliava Institute of Bacteriophage, Microbiology, and Virology Tbilisi, Georgia
| | | | | | - Ulrich Mehnert
- Neuro-Urology, Spinal Cord Injury Center and Research, University of Zürich, Balgrist University Hospital Zürich, Switzerland
| | - Thomas M Kessler
- Neuro-Urology, Spinal Cord Injury Center and Research, University of Zürich, Balgrist University Hospital Zürich, Switzerland
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26
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Sybesma W, Kort R, Lee YK. Locally sourced probiotics, the next opportunity for developing countries? Trends Biotechnol 2015; 33:197-200. [PMID: 25812840 DOI: 10.1016/j.tibtech.2015.01.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 12/09/2014] [Accepted: 01/21/2015] [Indexed: 01/22/2023]
Abstract
We describe factors promoting the exploration of locally sourced probiotics, targeting local populations to balance human needs and market opportunities. This would be particularly beneficial for people in developing countries, who generally lack access to affordable probiotics and are often exposed to poor hygiene conditions, toxic compounds, malnutrition, and chronic enteric infections.
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Affiliation(s)
- Wilbert Sybesma
- Yoba for Life foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands.
| | - Remco Kort
- Yoba for Life foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands; VU University Amsterdam, Department of Molecular Cell Physiology, Faculty of Earth and Life Sciences, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands; Netherlands Organisation for Applied Scientific Research (TNO), Microbiology and Systems Biology, Utrechtseweg 48, 3704 HE Zeist, The Netherlands
| | - Yuan-Kun Lee
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, 5 Science Drive 2, 117597, Singapore
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27
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Kort R, Westerik N, Mariela Serrano L, Douillard FP, Gottstein W, Mukisa IM, Tuijn CJ, Basten L, Hafkamp B, Meijer WC, Teusink B, de Vos WM, Reid G, Sybesma W. A novel consortium of Lactobacillus rhamnosus and Streptococcus thermophilus for increased access to functional fermented foods. Microb Cell Fact 2015; 14:195. [PMID: 26643044 PMCID: PMC4672519 DOI: 10.1186/s12934-015-0370-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 10/27/2015] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The lactic acid bacterium Lactobacillus rhamnosus GG is the most studied probiotic bacterium with proven health benefits upon oral intake, including the alleviation of diarrhea. The mission of the Yoba for Life foundation is to provide impoverished communities in Africa increased access to Lactobacillus rhamnosus GG under the name Lactobacillus rhamnosus yoba 2012, world's first generic probiotic strain. We have been able to overcome the strain's limitations to grow in food matrices like milk, by formulating a dried starter consortium with Streptococcus thermophilus that enables the propagation of both strains in milk and other food matrices. The affordable seed culture is used by people in resource-poor communities. RESULTS We used S. thermophilus C106 as an adjuvant culture for the propagation of L. rhamnosus yoba 2012 in a variety of fermented foods up to concentrations, because of its endogenous proteolytic activity, ability to degrade lactose and other synergistic effects. Subsequently, L. rhamnosus could reach final titers of 1E+09 CFU ml(-1), which is sufficient to comply with the recommended daily dose for probiotics. The specific metabolic interactions between the two strains were derived from the full genome sequences of L. rhamnosus GG and S. thermophilus C106. The piliation of the L. rhamnosus yoba 2012, required for epithelial adhesion and inflammatory signaling in the human host, was stable during growth in milk for two rounds of fermentation. Sachets prepared with the two strains, yoba 2012 and C106, retained viability for at least 2 years. CONCLUSIONS A stable dried seed culture has been developed which facilitates local and low-cost production of a wide range of fermented foods that subsequently act as delivery vehicles for beneficial bacteria to communities in east Africa.
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Affiliation(s)
- Remco Kort
- Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB, Amsterdam, The Netherlands. .,Micropia, Natura Artis Magistra, Plantage Kerklaan 38-40, 1018 CZ, Amsterdam, The Netherlands. .,Department of Molecular Cell Biology, VU University Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands. .,TNO Microbiology and Systems Biology, Zeist, The Netherlands.
| | - Nieke Westerik
- Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB, Amsterdam, The Netherlands. .,Department of Molecular Cell Biology, VU University Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands.
| | | | - François P Douillard
- Department of Veterinary Biosciences, University of Helsinki, Agnes Sjöberginkatu 2, 00790, Helsinki, Finland.
| | - Willi Gottstein
- Department of Molecular Cell Biology, VU University Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands.
| | - Ivan M Mukisa
- Department of Food Technology and Human Nutrition, Makerere University, Kampala, Uganda.
| | - Coosje J Tuijn
- Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB, Amsterdam, The Netherlands.
| | | | | | | | - Bas Teusink
- Department of Molecular Cell Biology, VU University Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands.
| | - Willem M de Vos
- Department of Veterinary Biosciences, University of Helsinki, Agnes Sjöberginkatu 2, 00790, Helsinki, Finland. .,Department of Bacteriology and Immunology, RPU Immunobiology, University of Helsinki, Helsinki, Finland. .,Laboratory of Microbiology, Wageningen University, Wageningen, The Netherlands.
| | - Gregor Reid
- Canadian Centre for Human Microbiome and Probiotic Research, Lawson Health Research Institute, London, ON, Canada. .,Division of Urology, Department of Microbiology and Immunology, Department of Surgery, Western University, London, ON, Canada.
| | - Wilbert Sybesma
- Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB, Amsterdam, The Netherlands.
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Mpofu A, Linnemann AR, Sybesma W, Kort R, Nout M, Smid EJ. Development of a locally sustainable functional food based on mutandabota, a traditional food in southern Africa. J Dairy Sci 2014; 97:2591-9. [DOI: 10.3168/jds.2013-7593] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 01/22/2014] [Indexed: 11/19/2022]
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29
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Reid G, Nduti N, Sybesma W, Kort R, Kollmann TR, Adam R, Boga H, Brown EM, Einerhand A, El-Nezami H, Gloor GB, Kavere II, Lindahl J, Manges A, Mamo W, Martin R, McMillan A, Obiero J, Ochieng’ PA, Onyango A, Rulisa S, Salminen E, Salminen S, Sije A, Swann JR, van Treuren W, Waweru D, Kemp SJ. Harnessing microbiome and probiotic research in sub-Saharan Africa: recommendations from an African workshop. Microbiome 2014; 2:12. [PMID: 24739094 PMCID: PMC3996947 DOI: 10.1186/2049-2618-2-12] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 03/06/2014] [Indexed: 05/07/2023]
Abstract
To augment capacity-building for microbiome and probiotic research in Africa, a workshop was held in Nairobi, Kenya, at which researchers discussed human, animal, insect, and agricultural microbiome and probiotics/prebiotics topics. Five recommendations were made to promote future basic and translational research that benefits Africans.
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Affiliation(s)
- Gregor Reid
- Lawson Health Research Institute and Departments of Microbiology & Immunology, and Surgery, University of Western Ontario, 268 Grosvenor Street, London, Ontario N6A 4V2, Canada
| | - Nicholas Nduti
- Ministry of Agriculture, Waruhiu Agriculture training Center, P.O. Box 800, Githunguri, Kenya
| | - Wilbert Sybesma
- Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands
| | - Remco Kort
- Yoba for Life Foundation, Hunzestraat 133-A, 1079 WB Amsterdam, The Netherlands
- TNO Microbiology and Systems Biology, Utrechtseweg 48, 3704 HE Zeist, and Molecular Cell Physiology, De Boelelaan 1085, 1081 HV, VU University, Amsterdam, The Netherlands
| | - Tobias R Kollmann
- Department of Pediatrics, Division of Infectious Diseases, University of British Columbia, CFRI A5-147, 950 W28th Ave, Vancouver, BC V5Z 4H4, Canada
| | - Rod Adam
- Department of Pathology, Aga Khan University Hospital, Nairobi, Kenya
| | - Hamadi Boga
- Taita Taveta University College, P.O. Box 635–80300, Voi, Kenya
| | - Eric M Brown
- Michael Smith Laboratories and Department of Microbiology and Immunology, University of British Columbia, Vancouver, Canada
| | | | - Hani El-Nezami
- School of Biological Sciences, University of Hong Kong, Pokfulam Rd, Hong Kong, Hong Kong SAR
| | - Gregory B Gloor
- Department of Biochemistry, University of Western Ontario, London, ON, Canada
| | - Irene I Kavere
- Jomo Kenyatta University of Agriculture and Technology, P.O. Box 62000, (00200) Nairobi, Kenya
| | - Johanna Lindahl
- Consultative Group on International Agricultural Research, ILRI, Nairobi, Kenya
| | - Amee Manges
- School of Population and Public Health, Faculty of Medicine, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Wondu Mamo
- Department of Animal Production, College of Veterinary Medicine and Agriculture, Addis Ababa University, Debre Zeyte, Ethiopia
| | - Rocio Martin
- Danone Nutricia Research, Uppsalalaan 12, 3584 CT Utrecht, The Netherlands
| | - Amy McMillan
- Lawson Health Research Institute and Departments of Microbiology & Immunology, and Surgery, University of Western Ontario, 268 Grosvenor Street, London, Ontario N6A 4V2, Canada
| | - Jael Obiero
- Department of Reproductive Health/Biology, Institute of Primate Research, Karen, Nairobi, Kenya
| | - Pamela A Ochieng’
- Jomo Kenyatta University of Agriculture and Technology, P.O. Box 62000, (00200) Nairobi, Kenya
| | - Arnold Onyango
- Jomo Kenyatta University of Agriculture and Technology, P.O. Box 62000, (00200) Nairobi, Kenya
| | - Stephen Rulisa
- University Teaching Hospital of Kigali, National University of Rwanda, Kigali, Rwanda
| | - Eeva Salminen
- Functional Foods Forum, The Medical School, University of Turku, 20014 Turku, Finland
| | - Seppo Salminen
- Department of Oncology, Turku University Hospital, 20520 Turku, Finland
| | - Antony Sije
- Jomo Kenyatta University of Agriculture and Technology, P.O. Box 62000, (00200) Nairobi, Kenya
| | - Jonathan R Swann
- Department of Food and Nutritional Sciences, School of Chemistry, Food and Pharmacy, University of Reading, Reading RG6 6AP, United Kingdom
| | - William van Treuren
- Department of Chemistry and Biochemistry and BioFrontiers Institute, University of Colorado at Boulder, Boulder, CO 80309, USA
| | - Daniel Waweru
- Jomo Kenyatta University of Agriculture and Technology, P.O. Box 62000, (00200) Nairobi, Kenya
| | - Steve J Kemp
- International Livestock Research Institute, Nairobi, Kenya
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30
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Affiliation(s)
- Remco Kort
- Yoba for Life foundation, WB Amsterdam, The Netherlands.
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LeBlanc JG, Sybesma W, Starrenburg M, Sesma F, de Vos WM, de Giori GS, Hugenholtz J. Supplementation with engineered Lactococcus lactis improves the folate status in deficient rats. Nutrition 2011; 26:835-41. [PMID: 19931414 DOI: 10.1016/j.nut.2009.06.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Revised: 06/22/2009] [Accepted: 06/26/2009] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The aim of this study was to establish the bioavailability of different folates produced by engineered Lactococcus lactis strains using a rodent depletion-repletion bioassay. METHODS Rats were fed a folate-deficient diet, which produces a reversible subclinical folate deficiency, supplemented with different L. lactis cultures that were added as the only source of folate. Three bacterial strains that overexpressed the folC, folKE, or folC +KE genes were used. These strains produce folates with different poly glutamyl tail lengths. The growth response of the rats and the concentration of folates in different organs and blood samples were monitored. RESULTS The folate produced by the engineered strains was able to compensate the folate depletion in the diet and showed similar bioavailability compared with commercial folic acid that is normally used for food fortification. Folate concentrations in organ and blood samples increased significantly in animals that received the folate-producing strains compared with those that did not receive bacterial supplementation. Hematologic studies also showed that administration of the L. lactis strains was able to revert a partial megaloblastic anemia caused by folate deficiency. No significant differences were observed in the bioavailability of folates containing different glutamyl tail lengths. CONCLUSION To our knowledge, this is the first study that demonstrated that folates produced by engineered lactic acid bacteria represent a bioavailable source of this essential vitamin.
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Affiliation(s)
- Jean Guy LeBlanc
- Centro de Referencia para Lactobacillos (CERELA-CONICET), Tucumán, Argentina
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Jankovic I, Sybesma W, Phothirath P, Ananta E, Mercenier A. Application of probiotics in food products—challenges and new approaches. Curr Opin Biotechnol 2010; 21:175-81. [DOI: 10.1016/j.copbio.2010.03.009] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Accepted: 03/10/2010] [Indexed: 12/18/2022]
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Muller JA, Stanton C, Sybesma W, Fitzgerald GF, Ross RP. Reconstitution conditions for dried probiotic powders represent a critical step in determining cell viability. J Appl Microbiol 2009; 108:1369-79. [PMID: 19796125 DOI: 10.1111/j.1365-2672.2009.04533.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS Resuscitation of dried cultures represents a critical control point in obtaining active and effective probiotic strains. This study examined the effects of various rehydration conditions on the viability of Bifidobacterium longum NCC3001 and Lactobacillus johnsonii La1. METHODS AND RESULTS Reconstitution conditions for these strains were optimized using a multivariate experimental design approach. Furthermore, using flow cytometry, the cell integrity was followed during reconstitution. By adjusting the pH, availability of a metabolizable sugar, reconstitution duration, powder matrix and ratio of powder to reconstitution solution, the recovery of Bif. longum NCC3001 and Lact. johnsonii La1 following reconstitution was increased eight- and two-fold, respectively, over standard reconstitution in maximum recovery diluent. It was shown that pH had a significant effect on the recovery of Bif. longum NCC3001 and Lact. johnsonii La1. CONCLUSIONS The recovery of dried probiotic cultures is greatly dependent on the reconstitution conditions. The maximum recovery of 11.7 (10)log CFU g(-1) Bif. longum NCC3001 was achieved at 30-min reconstitution at pH 8, in the presence of 2% L-arabinose and a ratio of 1:100 of powder to diluent. Lact. johnsonii La1 showed highest recovery (9.3 (10)log CFU g(-1)) after reconstitution, when mixed with maltodextrin at pH 4. SIGNIFICANCE AND IMPACT OF THE STUDY To achieve accurate viable probiotic numbers from dried probiotic cultures, the reconstitution conditions should be optimized for the strain used.
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Affiliation(s)
- J A Muller
- Teagasc, Moorepark Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
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Sybesma W, Hugenholtz J, De Vos WM, Smid EJ. Safe use of genetically modified lactic acid bacteria in food. Bridging the gap between consumers, green groups, and industry. ELECTRON J BIOTECHN 2006. [DOI: 10.2225/vol9-issue4-fulltext-12] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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Klaus SMJ, Wegkamp A, Sybesma W, Hugenholtz J, Gregory JF, Hanson AD. A nudix enzyme removes pyrophosphate from dihydroneopterin triphosphate in the folate synthesis pathway of bacteria and plants. J Biol Chem 2005; 280:5274-80. [PMID: 15611104 DOI: 10.1074/jbc.m413759200] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Removal of pyrophosphate from dihydroneopterin triphosphate (DHNTP) is the second step in the pterin branch of the folate synthesis pathway. There has been controversy over whether this reaction requires a specific pyrophosphohydrolase or is a metal ion-dependent chemical process. The genome of Lactococcus lactis has a multicistronic folate synthesis operon that includes an open reading frame (ylgG) specifying a putative Nudix hydrolase. Because many Nudix enzymes are pyrophosphohydrolases, YlgG was expressed in Escherichia coli and characterized. The recombinant protein showed high DHNTP pyrophosphohydrolase activity with a K(m) value of 2 microM, had no detectable activity against deoxynucleoside triphosphates or other typical Nudix hydrolase substrates, required a physiological level (approximately 1 mM) of Mg(2+), and was active as a monomer. Essentially no reaction occurred without enzyme at 1 mM Mg(2+). Inactivation of ylgG in L. lactis resulted in DHNTP accumulation and folate depletion, confirming that YlgG functions in folate biosynthesis. We therefore propose that ylgG be redesignated as folQ. The closest Arabidopsis homolog of YlgG (encoded by Nudix gene At1g68760) was expressed in E. coli and shown to have Mg(2+)-dependent DHNTP pyrophosphohydrolase activity. This protein (AtNUDT1) was reported previously to have NADH pyrophosphatase activity in the presence of 5 mM Mn(2+) (Dobrzanska, M., Szurmak, B., Wyslouch-Cieszynska, A., and Kraszewska, E. (2002) J. Biol. Chem. 277, 50482-50486). However, we found that this activity is negligible at physiological levels of Mn(2+) and that, with 1 mM Mg(2+), AtNUDT1 prefers DHNTP and (deoxy) nucleoside triphosphates.
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Affiliation(s)
- Sebastian M J Klaus
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
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Burgess C, O'connell-Motherway M, Sybesma W, Hugenholtz J, van Sinderen D. Riboflavin production in Lactococcus lactis: potential for in situ production of vitamin-enriched foods. Appl Environ Microbiol 2004; 70:5769-77. [PMID: 15466513 PMCID: PMC522069 DOI: 10.1128/aem.70.10.5769-5777.2004] [Citation(s) in RCA: 130] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This study describes the genetic analysis of the riboflavin (vitamin B(2)) biosynthetic (rib) operon in the lactic acid bacterium Lactococcus lactis subsp. cremoris strain NZ9000. Functional analysis of the genes of the L. lactis rib operon was performed by using complementation studies, as well as by deletion analysis. In addition, gene-specific genetic engineering was used to examine which genes of the rib operon need to be overexpressed in order to effect riboflavin overproduction. Transcriptional regulation of the L. lactis riboflavin biosynthetic process was investigated by using Northern hybridization and primer extension, as well as the analysis of roseoflavin-induced riboflavin-overproducing L. lactis isolates. The latter analysis revealed the presence of both nucleotide replacements and deletions in the regulatory region of the rib operon. The results presented here are an important step toward the development of fermented foods containing increased levels of riboflavin, produced in situ, thus negating the need for vitamin fortification.
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Affiliation(s)
- Catherine Burgess
- Department of Microbiology, Biosciences Institute, National University of Ireland, Cork, Ireland
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Sybesma W, Burgess C, Starrenburg M, van Sinderen D, Hugenholtz J. Multivitamin production in Lactococcus lactis using metabolic engineering. Metab Eng 2004; 6:109-15. [PMID: 15113564 DOI: 10.1016/j.ymben.2003.11.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2003] [Accepted: 11/03/2003] [Indexed: 11/21/2022]
Abstract
The dairy starter bacterium Lactococcus lactis has the potential to synthesize both folate (vitamin B11) and riboflavin (vitamin B2). By directed mutagenesis followed by selection and metabolic engineering we have modified two complicated biosynthetic pathways in L. lactis resulting in simultaneous overproduction of both folate and riboflavin: Following exposure to the riboflavin analogue roseoflavin we have isolated a spontaneous mutant of L. lactis strain NZ9000 that was changed from a riboflavin consumer into a riboflavin producer. This mutant contained a single base change in the regulatory region upstream of the riboflavin biosynthetic genes. By the constitutive overproduction of GTP cyclohydrolase I in this riboflavin-producing strain, the production of folate was increased as well. Novel foods, enriched through fermentation using these multivitamin-producing starters, could compensate the B-vitamin-deficiencies that are common even in highly developed countries and could specifically be used in dietary foods for the large fraction of the Caucasian people (10-15%) with mutations in the methylene tetrahydrofolate reductase (MTHFR).
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Affiliation(s)
- Wilbert Sybesma
- Department of Flavor, Nutrition and Natural Ingredients, Wageningen Centre for Food Sciences, NIZO food research, Kernhemseweg 2, P.O. Box 20, 6710 BA Ede, The Netherlands
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Li Y, Hugenholtz J, Sybesma W, Abee T, Molenaar D. Using Lactococcus lactis for glutathione overproduction. Appl Microbiol Biotechnol 2004; 67:83-90. [PMID: 15490155 DOI: 10.1007/s00253-004-1762-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2004] [Accepted: 08/31/2004] [Indexed: 10/26/2022]
Abstract
Glutathione and gamma-glutamylcysteine were produced in Lactococcus lactis using a controlled expression system and the genes gshA and gshB from Escherichia coli encoding the enzymes gamma-glutamylcysteine synthetase and glutathione synthetase. High levels of gamma-glutamylcysteine were found in strains growing on chemically defined medium and expressing either gshA alone or both gshA and gshB. As anticipated, glutathione was found in a strain expressing gshA and gshB. The level of glutathione production could be increased by addition of the precursor amino acid cysteine to the medium. The addition of cysteine led to an increased activity of glutathione synthetase, which is remarkable because the amino acid is not a substrate of this enzyme. The final intracellular glutathione concentration attained was 358 nmol mg(-1) protein, which is the highest concentration reported for a bacterium, demonstrating the suitability of engineered L. lactis for fine-chemical production and as a model for studies of the impact of glutathione on flavour formation and other properties of food.
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Affiliation(s)
- Yin Li
- Wageningen Centre for Food Sciences, NIZO food research, P.O. Box 20, 6710 Ede, The Netherlands
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Wegkamp A, Starrenburg M, de Vos WM, Hugenholtz J, Sybesma W. Transformation of folate-consuming Lactobacillus gasseri into a folate producer. Appl Environ Microbiol 2004; 70:3146-8. [PMID: 15128580 PMCID: PMC404390 DOI: 10.1128/aem.70.5.3146-3148.2004] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Five genes essential for folate biosynthesis in Lactococcus lactis were cloned on a broad-host-range lactococcal vector and were transferred to the folate auxotroph Lactobacillus gasseri. As a result L. gasseri changed from a folate consumer to a folate producer. This principle can be used to increase folate levels in many fermented food products.
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Affiliation(s)
- Arno Wegkamp
- Wageningen Centre for Food Sciences and NIZO food research, Ede, The Netherlands
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Sybesma W, Van Den Born E, Starrenburg M, Mierau I, Kleerebezem M, De Vos WM, Hugenholtz J. Controlled modulation of folate polyglutamyl tail length by metabolic engineering of Lactococcus lactis. Appl Environ Microbiol 2004; 69:7101-7. [PMID: 14660354 PMCID: PMC309937 DOI: 10.1128/aem.69.12.7101-7107.2003] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The dairy starter bacterium Lactococcus lactis is able to synthesize folate and accumulates >90% of the produced folate intracellularly, predominantly in the polyglutamyl form. Approximately 10% of the produced folate is released into the environment. Overexpression of folC in L. lactis led to an increase in the length of the polyglutamyl tail from the predominant 4, 5, and 6 glutamate residues in wild-type cells to a maximum of 12 glutamate residues in the folate synthetase overproducer and resulted in a complete retention of folate in the cells. Overexpression of folKE, encoding the bifunctional protein 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase and GTP-cyclohydrolase I, resulted in reduction of the average polyglutamyl tail length, leading to enhanced excretion of folate. By simultaneous overexpression of folKE and folC, encoding the enzyme folate synthetase or polyglutamyl folate synthetase, the average polyglutamyl tail length was increased, again resulting in normal wild-type distribution of folate. The production of bioavailable monoglutamyl folate and almost complete release of folate from the bacterium was achieved by expressing the gene for gamma-glutamyl hydrolase from human or rat origin. These engineering studies clearly establish the role of the polyglutamyl tail length in intracellular retention of the folate produced. Also, the potential application of engineered food microbes producing folates with different tail lengths is discussed.
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Affiliation(s)
- Wilbert Sybesma
- Department of Flavour, Nutrition and Natural Ingredients, Wageningen Centre For Food Sciences, NIZO food research, 6710 BA Ede, The Netherlands
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Sybesma W, Starrenburg M, Tijsseling L, Hoefnagel MHN, Hugenholtz J. Effects of cultivation conditions on folate production by lactic acid bacteria. Appl Environ Microbiol 2003; 69:4542-8. [PMID: 12902240 PMCID: PMC169137 DOI: 10.1128/aem.69.8.4542-4548.2003] [Citation(s) in RCA: 140] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A variety of lactic acid bacteria were screened for their ability to produce folate intracellularly and/or extracellularly. Lactococcus lactis, Streptococcus thermophilus, and Leuconostoc spp. all produced folate, while most Lactobacillus spp., with the exception of Lactobacillus plantarum, were not able to produce folate. Folate production was further investigated in L. lactis as a model organism for metabolic engineering and in S. thermophilus for direct translation to (dairy) applications. For both these two lactic acid bacteria, an inverse relationship was observed between growth rate and folate production. When cultures were grown at inhibitory concentrations of antibiotics or salt or when the bacteria were subjected to low growth rates in chemostat cultures, folate levels in the cultures were increased relative to cell mass and (lactic) acid production. S. thermophilus excreted more folate than L. lactis, presumably as a result of differences in the number of glutamyl residues of the folate produced. In S. thermophilus 5,10-methenyl and 5-formyl tetrahydrofolate were detected as the major folate derivatives, both containing three glutamyl residues, while in L. lactis 5,10-methenyl and 10-formyl tetrahydrofolate were found, both with either four, five, or six glutamyl residues. Excretion of folate was stimulated at lower pH in S. thermophilus, but pH had no effect on folate excretion by L. lactis. Finally, several environmental parameters that influence folate production in these lactic acid bacteria were observed; high external pH increased folate production and the addition of p-aminobenzoic acid stimulated folate production, while high tyrosine concentrations led to decreased folate biosynthesis.
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Affiliation(s)
- Wilbert Sybesma
- Wageningen Centre for Food Sciences and NIZO Food Research, Ede., Wageningen, The Netherlands
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Sybesma W, Starrenburg M, Kleerebezem M, Mierau I, de Vos WM, Hugenholtz J. Increased production of folate by metabolic engineering of Lactococcus lactis. Appl Environ Microbiol 2003; 69:3069-76. [PMID: 12788700 PMCID: PMC161528 DOI: 10.1128/aem.69.6.3069-3076.2003] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The dairy starter bacterium Lactococcus lactis is able to synthesize folate and accumulates large amounts of folate, predominantly in the polyglutamyl form. Only small amounts of the produced folate are released in the extracellular medium. Five genes involved in folate biosynthesis were identified in a folate gene cluster in L. lactis MG1363: folA, folB, folKE, folP, and folC. The gene folKE encodes the biprotein 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase and GTP cyclohydrolase I. The overexpression of folKE in L. lactis was found to increase the extracellular folate production almost 10-fold, while the total folate production increased almost 3-fold. The controlled combined overexpression of folKE and folC, encoding polyglutamyl folate synthetase, increased the retention of folate in the cell. The cloning and overexpression of folA, encoding dihydrofolate reductase, decreased the folate production twofold, suggesting a feedback inhibition of reduced folates on folate biosynthesis.
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Affiliation(s)
- Wilbert Sybesma
- Wageningen Centre for Food Sciences, NIZO Food Research, 6718 ZB Ede, The Netherlands
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Kleerebezem M, Boels IC, Groot MN, Mierau I, Sybesma W, Hugenholtz J. Metabolic engineering of Lactococcus lactis: the impact of genomics and metabolic modelling. J Biotechnol 2002; 98:199-213. [PMID: 12141987 DOI: 10.1016/s0168-1656(02)00132-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Lactic acid bacteria display a relatively simple and well described metabolism where the sugar source is converted mainly to lactic acid. Here we will shortly describe metabolic engineering strategies that led to the efficient re-routing of the lactococcal pyruvate metabolism to end-products other than lactic acid, including diacetyl and alanine. Moreover, we will review current metabolic engineering approaches that aim at increasing the flux through complex biosynthetic pathways, leading to exopolysaccharides and folic acid. Finally, the (future) impact of the developments in the area of genomics and corresponding high-throughput technologies will be discussed.
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Affiliation(s)
- Michiel Kleerebezem
- Department of Flavour, Nutrition and Natural Ingredients, Wageningen Centre for Food Sciences, NIZO Food Research, P.O. Box 20, 6710 BA Ede, The Netherlands.
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Hugenholtz J, Sybesma W, Groot MN, Wisselink W, Ladero V, Burgess K, van Sinderen D, Piard JC, Eggink G, Smid EJ, Savoy G, Sesma F, Jansen T, Hols P, Kleerebezem M. Metabolic engineering of lactic acid bacteria for the production of nutraceuticals. Antonie Van Leeuwenhoek 2002; 82:217-35. [PMID: 12369189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
Lactic acid bacteria display a relatively simple and well-described metabolism where the sugar source is converted mainly to lactic acid. Here we will shortly describe metabolic engineering strategies on the level of sugar metabolism, that lead to either the efficient re-routing of the lactococcal sugar metabolism to nutritional end-products other than lactic acid such as L-alanine, several low-calorie sugars and oligosaccharides or to enhancement of sugar metabolism for complete removal of (undesirable) sugars from food materials. Moreover, we will review current metabolic engineering approaches that aim at increasing the flux through complex biosynthetic pathways, leading to the production of the B-vitamins folate and riboflavin. An overview of these metabolic engineering activities can be found on the website of the Nutra Cells 5th Framework EU-project (www.nutracells.com). Finally, the impact of the developments in the area of genomics and corresponding high-throughput technologies on nutraceutical production will be discussed.
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Hugenholtz J, Sybesma W, Nierop Groot M, Wisselink W, Ladero V, Burgess K, van Sinderen D, Piard J, Eggink G, Smid EJ, Savoy G, Sesma F, Jansen T, Hols P, Kleerebezem M. Antonie Van Leeuwenhoek 2002; 82:217-235. [DOI: 10.1023/a:1020608304886] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Sybesma W, Hugenholtz J, Mierau I, Kleerebezem M. Improved efficiency and reliability of RT-PCR using tag-extended RT primers and temperature gradient PCR. Biotechniques 2001; 31:466, 468, 470, passim. [PMID: 11570487 DOI: 10.2144/01313bm02] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- W Sybesma
- Wageningen Centre for Food Sciences, The Netherlands.
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Sybesma W. [The search for the genetic background of the disease discovered in the region of Enter]. Tijdschr Diergeneeskd 2000; 125:532-3. [PMID: 11002504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Abstract
In early 1991, the Dutch pig industry was struck by the so-called mystery swine disease. Large-scale laboratory investigations were undertaken to search for the aetiological agent. We focused on isolating viruses and mycoplasmas, and we tested paired sera of affected sows for antibodies against ten known pig viruses. The mycoplasmas M. hysonoviae, M. hyopneumoniae, and Acheloplasma laidlawii, and the viruses encephalomyocarditis virus and porcine enterovirus types 2 and 7 were isolated from individual pigs. An unknown agent however, was isolated from 16 of 20 piglets and from 41 of 63 sows. This agent was characterized as a virus and designated Lelystad virus. No relationship between this virus and other viruses has yet been established. Of 165 sows reportedly affected by the disease, 123 (75 per cent) seroconverted to Lelystad virus, whereas less than 10 per cent seroconverted to any of the other virus isolates or to known viral pathogens. Antibodies directed against Lelystad virus were also found in pigs with mystery swine disease in England, Germany, and the United States. We conclude that infection with Lelystad virus is the likely cause of mystery swine disease.
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Elsinghorst TA, Sybesma W. [The discovery of the Lelystad virus. A high point in Dutch veterinary research during the last ten years (1990-1999)]. Tijdschr Diergeneeskd 2000; 125:333-4. [PMID: 10950729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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van Logtestijn JG, Sybesma W. [The non-vaccination policy]. Tijdschr Diergeneeskd 1999; 124:160-1. [PMID: 10084201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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