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Aliabadi M, Saghebjoo M, Yakhchali B, Shariati V. Interaction between high-intensity interval training and high-protein diet on gut microbiota composition and body weight in obese male rats. Appl Physiol Nutr Metab 2023; 48:808-828. [PMID: 37642210 DOI: 10.1139/apnm-2023-0071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Diet and exercise are two critical factors that regulate gut microbiota, affecting weight management. The present study investigated the effect of 10 weeks of high-intensity interval training (HIIT) and a high-protein diet (HPD) on gut microbiota composition and body weight changes in obese male Wistar rats. Forty obese rats were randomly divided into five groups, including HPD, HIIT + HPD, HIIT + high-fat diet (HFD) (continuing HFD during intervention), obese control 1 (continuing HFD during intervention), obese control 2 (cutting off HFD at the beginning of the intervention and continuing standard diet), and eight non-obese Wistar rats as a non-obese control (NOC) group (standard diet). Microbial community composition and diversity analysis by sequencing 16S rRNA genes derived from the fecal samples, body weight, and Lee index were assessed. The body weight and Lee index in the NOC, HIIT + HFD, HPD, and HIIT + HPD groups were significantly lower than that in the OC1 and OC2 groups along with the lower body weight and Lee index in the HPD and HIIT + HPD groups compared with the HIIT + HFD group. Also, HFD consumption and switching from HFD to a standard diet or HPD increased gut microbiota dysbiosis. Furthermore, HIIT along with HFD increased the adverse effects of HFD on gut microbiota, while the HIIT + HPD increased microbial richness, improved gut microbiota dysbiosis, and changed rats' phenotype to lean. It appears that HFD discontinuation without doing HIIT does not improve gut microbiota dysbiosis. Also, the HIIT + HFD, HPD, and HIIT + HPD slow down HFD-induced weight gain, but HIIT + HPD is a more reliable strategy for weight management due to its beneficial effects on gut microbiota composition.
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Affiliation(s)
- Mohsen Aliabadi
- Department of Exercise Physiology, Faculty of Sport Sciences, University of Birjand, Birjand, Iran
| | - Marziyeh Saghebjoo
- Department of Exercise Physiology, Faculty of Sport Sciences, University of Birjand, Birjand, Iran
| | - Bagher Yakhchali
- National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Vahid Shariati
- National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
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2
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Kim J, Shanmugasundaram A, Kim DS, Jeong YJ, Kanade PP, Kim ES, Lee BK, Lee DW. Quantitative assessment of cardiomyocyte mechanobiology through high-throughput cantilever-based functional well plate systems. Analyst 2023; 148:5133-5143. [PMID: 37695027 DOI: 10.1039/d3an01286g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Proper regulation of the in vitro cell culture environment is essential for disease modelling and drug toxicity screening. The main limitation of well plates used for cell culture is that they cannot accurately maintain energy sources and compounds needed during cell growth. Herein, to understand the importance of perfusion in cardiomyocyte culture, changes in contractile force and heart rate during cardiomyocyte growth are systematically investigated, and the results are compared with those of a perfusion-free system. The proposed perfusion system consists of a Peltier refrigerator, a peristaltic pump, and a functional well plate. A functional well plate with 12 wells is made through injection moulding, with two tubes integrated in the cover for each well to continuously circulate the culture medium. The contractile force of cardiomyocytes growing on the cantilever surface is analysed through changes in cantilever displacement. The maturation of cardiomyocytes is evaluated through fluorescence staining and western blot; cardiomyocytes cultured in the perfusion system show greater maturity than those cultured in a manually replaced culture medium. The pH of the culture medium manually replaced at intervals of 3 days decreases to 6.8, resulting in an abnormal heartbeat, while cardiomyocytes cultured in the perfusion system maintained at pH 7.4 show improved contractility and a uniform heart rate. Two well-known ion channel blockers, verapamil and quinidine, are used to measure changes in the contractile force of cardiomyocytes from the two systems. Cardiomyocytes in the perfusion system show greater stability during drug toxicity screening, proving that the perfusion system provides a better environment for cell growth.
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Affiliation(s)
- Jongyun Kim
- MEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea.
- Advanced Medical Device Research Center for Cardiovascular Disease, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Arunkumar Shanmugasundaram
- MEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea.
- Advanced Medical Device Research Center for Cardiovascular Disease, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Dong-Su Kim
- MEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea.
- Advanced Medical Device Research Center for Cardiovascular Disease, Chonnam National University, Gwangju 61186, Republic of Korea
- Green Energy & Nano Technology R&D Group, Korea Institute of Industrial Technology (KITECH), Gwangju, 61012, Republic of Korea
| | - Yun-Jin Jeong
- MEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea.
- Advanced Medical Device Research Center for Cardiovascular Disease, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Pooja P Kanade
- MEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea.
- Advanced Medical Device Research Center for Cardiovascular Disease, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Eung-Sam Kim
- Department of Biological Sciences, Chonnam National University, Gwangju, 61186, Republic of Korea
- Center for Next-Generation Sensor Research and Development, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Bong-Kee Lee
- MEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea.
- Center for Next-Generation Sensor Research and Development, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Dong-Weon Lee
- MEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea.
- Center for Next-Generation Sensor Research and Development, Chonnam National University, Gwangju 61186, Republic of Korea
- Advanced Medical Device Research Center for Cardiovascular Disease, Chonnam National University, Gwangju 61186, Republic of Korea
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3
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Zhao Y, Chen L, Yao S, Chen L, Huang J, Chen S, Yu Z. Genome-centric investigation of the potential succession pattern in gut microbiota and altered functions under high-protein diet. Curr Res Food Sci 2023; 7:100600. [PMID: 37840698 PMCID: PMC10569982 DOI: 10.1016/j.crfs.2023.100600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/09/2023] [Accepted: 09/19/2023] [Indexed: 10/17/2023] Open
Abstract
Excessive intake of protein has been considered as a factor leading to intestinal microecological disorder, but why and how intestinal microbes change under the high-protein diet (HPD) have yet to be fully elucidated. Here, we performed 16S rRNA gene amplicon sequencing and metagenomic sequencing on contents of cecum, colon and feces from two groups of mice with standard diet (SD) and HPD. And then the microbial alteration of composition and function were deeply analyzed by using several statistical models and bioinformatic methods. Among the three niches, the microbes in the colon are observed to show the most significant change with lower alpha-diversity and higher beta-diversity after HPD. In addition, this alteration of microbial structure may be related to the replacement process and co-occurring community. Most species are also enriched or impoverished in the colon during this process. After analyzing the functional genes related to protein and carbohydrate hydrolysis in different niches, we found that the carbon source provided by poor carbohydrates compared with the rich protein may be the potential factor driving the enrichment of mucin degraders and desulphaters in the colon under HPD. Therefore, our study provided a new insight to understand the underlying mechanism of HPD affecting intestinal health from the perspective of microbial functional ecology.
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Affiliation(s)
- Yiming Zhao
- Department of Gastroenterology, Xiangya Hospital Central South University, Changsha, Hunan, China
- Department of Microbiology, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Lulu Chen
- Department of Gastroenterology, Xiangya Hospital Central South University, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital Central South University, Changsha, Hunan, China
| | - Siqi Yao
- Department of Microbiology, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Liyu Chen
- Department of Microbiology, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Jing Huang
- Department of Parasitology, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Shuijiao Chen
- Department of Gastroenterology, Xiangya Hospital Central South University, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital Central South University, Changsha, Hunan, China
| | - Zheng Yu
- Department of Microbiology, School of Basic Medical Science, Central South University, Changsha, Hunan, China
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Blachier F. Amino Acid-Derived Bacterial Metabolites in the Colorectal Luminal Fluid: Effects on Microbial Communication, Metabolism, Physiology, and Growth. Microorganisms 2023; 11:1317. [PMID: 37317289 DOI: 10.3390/microorganisms11051317] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/14/2023] [Accepted: 05/15/2023] [Indexed: 06/16/2023] Open
Abstract
Undigested dietary and endogenous proteins, as well as unabsorbed amino acids, can move from the terminal part of the ileum into the large intestine, where they meet a dense microbial population. Exfoliated cells and mucus released from the large intestine epithelium also supply nitrogenous material to this microbial population. The bacteria in the large intestine luminal fluid release amino acids from the available proteins, and amino acids are then used for bacterial protein synthesis, energy production, and in other various catabolic pathways. The resulting metabolic intermediaries and end products can then accumulate in the colorectal fluid, and their concentrations appear to depend on different parameters, including microbiota composition and metabolic activity, substrate availability, and the capacity of absorptive colonocytes to absorb these metabolites. The aim of the present review is to present how amino acid-derived bacterial metabolites can affect microbial communication between both commensal and pathogenic microorganisms, as well as their metabolism, physiology, and growth.
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Affiliation(s)
- François Blachier
- Université Paris-Saclay, AgroParisTech, INRAe, UMR PNCA, 91120 Palaiseau, France
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Wang Y, Uffelman CN, Bergia RE, Clark CM, Reed JB, Cross TWL, Lindemann SR, Tang M, Campbell WW. Meat Consumption and Gut Microbiota: a Scoping Review of Literature and Systematic Review of Randomized Controlled Trials in Adults. Adv Nutr 2023; 14:215-237. [PMID: 36822879 PMCID: PMC10229385 DOI: 10.1016/j.advnut.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 09/27/2022] [Accepted: 10/05/2022] [Indexed: 12/23/2022] Open
Abstract
Emerging research indicates the importance of gut microbiota in mediating the relationship between meat intake and human health outcomes. We aimed to assess the state of available scientific literature on meat intake and gut microbiota in humans (PROSPERO, International Prospective Register of Systematic Reviews, CRD42020135649). We first conducted a scoping review to identify observational and interventional studies on this topic. Searches were performed for English language articles using PubMed, Cochrane Library, Scopus, and CINAHL (Cumulated Index to Nursing and Allied Health Literature) databases from inception to August 2021 and using keywords related to meat (inclusive of mammalian, avian, and aquatic subtypes) and gut microbiota. Of 14,680 records, 85 eligible articles were included in the scoping review, comprising 57 observational and 28 interventional studies. One prospective observational study and 13 randomized controlled trials (RCTs) were identified in adults without diagnosed disease. We included the 13 RCTs, comprising 18 comparisons, in the systematic review to assess the effects of higher and lower intakes of total meat and meat subtypes on the gut microbiota composition. The bacterial composition was differentially affected by consuming diets with and without meat or with varied meat subtypes. For example, higher meat intake tended to decrease population sizes of genera Anerostipes and Faecalibacterium, but it increased the population size of Roseburia across studies. However, the magnitude and directionality of most microbial responses varied, with inconsistent patterns of responses across studies. The data were insufficient for comparison within or between meat subtypes. The paucity of research, especially among meat subtypes, and heterogeneity of findings underscore the need for more well-designed prospective studies and full-feeding RCTs to address the relationships between and effects of consuming total meat and meat subtypes on gut microbiota, respectively.
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Affiliation(s)
- Yu Wang
- Department of Nutrition Science, Purdue University, West Lafayette, IN, USA
| | - Cassi N Uffelman
- Department of Nutrition Science, Purdue University, West Lafayette, IN, USA
| | - Robert E Bergia
- Department of Nutrition Science, Purdue University, West Lafayette, IN, USA
| | - Caroline M Clark
- Department of Nutrition Science, Purdue University, West Lafayette, IN, USA
| | - Jason B Reed
- Libraries and School of Information Studies, Purdue University, West Lafayette, IN, USA
| | - Tzu-Wen L Cross
- Department of Nutrition Science, Purdue University, West Lafayette, IN, USA
| | | | - Minghua Tang
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Wayne W Campbell
- Department of Nutrition Science, Purdue University, West Lafayette, IN, USA.
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Karthik Y, Ishwara Kalyani M, Krishnappa S, Devappa R, Anjali Goud C, Ramakrishna K, Wani MA, Alkafafy M, Hussen Abduljabbar M, Alswat AS, Sayed SM, Mushtaq M. Antiproliferative activity of antimicrobial peptides and bioactive compounds from the mangrove Glutamicibacter mysorens. Front Microbiol 2023; 14:1096826. [PMID: 36876075 PMCID: PMC9982118 DOI: 10.3389/fmicb.2023.1096826] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 01/26/2023] [Indexed: 02/19/2023] Open
Abstract
The Glutamicibacter group of microbes is known for antibiotic and enzyme production. Antibiotics and enzymes produced by them are important in the control, protection, and treatment of chronic human diseases. In this study, the Glutamicibacter mysorens (G. mysorens) strain MW647910.1 was isolated from mangrove soil in the Mangalore region of India. After optimization of growth conditions for G. mysorens on starch casein agar media, the micromorphology of G. mysorens was found to be spirally coiled spore chain, each spore visualized as an elongated cylindrical hairy appearance with curved edges visualized through Field Emission Scanning Electron Microscopy (FESEM) analysis. The culture phenotype with filamentous mycelia, brown pigmentation, and ash-colored spore production was observed. The intracellular extract of G. mysorens characterized through GCMS analysis detected bioactive compounds reported for pharmacological applications. The majority of bioactive compounds identified in intracellular extract when compared to the NIST library revealed molecular weight ranging below 1kgmole-1. The Sephadex G-10 could result in 10.66 fold purification and eluted peak protein fraction showed significant anticancer activity on the prostate cancer cell line. Liquid Chromatography-Mass Spectrometry (LC-MS) analysis revealed Kinetin-9-ribose and Embinin with a molecular weight below 1 kDa. This study showed small molecular weight bioactive compounds produced from microbial origin possess dual roles, acting as antimicrobial peptides (AMPs) and anticancer peptides (ACPs). Hence, the bioactive compounds produced from microbial origin are a promising source of future therapeutics.
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Affiliation(s)
- Yalpi Karthik
- Department of Studies and Research in Microbiology, Mangalore University, Mangalore, Karnataka, India
| | - Manjula Ishwara Kalyani
- Department of Studies and Research in Microbiology, Mangalore University, Mangalore, Karnataka, India
| | - Srinivasa Krishnappa
- Department of Studies and Research in Biochemistry, Mangalore University, Mangalore, Karnataka, India
| | - Ramakrishna Devappa
- Dr. C.D Sagar Centre for Life Sciences, Biotechnology Department, Dayananda Sagar College of Engineering, Dayananda Sagar Institutions, Bengaluru, India
| | - Chengeshpur Anjali Goud
- Department of Plant Biotechnology, School of Agricultural Sciences, Malla Reddy University, Hyderabad, India
| | - Krishnaveni Ramakrishna
- Department of Studies and Research in Microbiology, Vijayanagara Sri Krishnadevaraya University, Ballari, Karnataka, India
| | - Muneeb Ahmad Wani
- Division of Floriculture, Sher-e-Kashmir University of Agricultural Sciences and Technology, Srinagar, Jammu and Kashmir, India
| | - Mohamed Alkafafy
- Department of Cytology and Histology, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Egypt
| | - Maram Hussen Abduljabbar
- Department of Pharmacology and Toxicology, College of Pharmacy, Taif University, Taif, Saudi Arabia
| | - Amal S Alswat
- Department of Biotechnology, College of Science, Taif University, Taif, Saudi Arabia
| | - Samy M Sayed
- Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza, Egypt
| | - Muntazir Mushtaq
- ICAR-National Bureau of Plant Genetic Resources, Division of Germplasm Evaluation, New Delhi, India.,MS Swaminathan School of Agriculture, Shoolini University of Biotechnology and Management, Bajhol, Himachal Pradesh, India
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Ristori S, Scavone F, Bartolozzi C, Giovannelli L. The comet assay for the evaluation of gut content genotoxicity: Use in human studies as an early biomarker of colon cancer risk. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2022; 878:503477. [PMID: 35649683 DOI: 10.1016/j.mrgentox.2022.503477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 01/19/2022] [Accepted: 02/22/2022] [Indexed: 06/15/2023]
Abstract
This short narrative review describes the use of the comet assay to evaluate the formation of genotoxic compounds in the gut lumen in human studies. The fecal water genotoxicity assay is based on ability of the gut content to induce genotoxicity in a cellular model, employing the aqueous component of the feces (fecal water) as this is supposed to contain most of the reactive species and to convey them to the intestinal epithelium. This non-invasive and low-cost assay has been demonstrated to be associated with colon cancer risk in animal models, and although the final validation against human tumors is lacking, it is widely used as a colo-rectal cancer risk biomarker in human nutritional intervention studies. The contribution given to the field of nutrition and cancer by the FW genotoxicity assay is highlighted, particularly in conjunction with other risk biomarkers, to shed light on the complex relationship among diet, microbiota, individual subject characteristics and the formation of genotoxic compounds in the gut.
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Affiliation(s)
- Sara Ristori
- NEUROFARBA Department, Pharmacology and Toxicology Section, University of Florence, Viale Pieraccini 6, 50139 Florence, Italy
| | - Francesca Scavone
- Department of Experimental and Clinical Biomedical Sciences Mario Serio, University of Florence, Viale Morgagni 50, 50134 Florence, Italy
| | - Chiara Bartolozzi
- NEUROFARBA Department, Pharmacology and Toxicology Section, University of Florence, Viale Pieraccini 6, 50139 Florence, Italy
| | - Lisa Giovannelli
- NEUROFARBA Department, Pharmacology and Toxicology Section, University of Florence, Viale Pieraccini 6, 50139 Florence, Italy.
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Deroover L, Vázquez-Castellanos JF, Vandermeulen G, Luypaerts A, Raes J, Courtin CM, Verbeke K. Wheat bran with reduced particle size increases serum SCFAs in obese subjects without improving health parameters compared with a maltodextrin placebo. Am J Clin Nutr 2021; 114:1328-1341. [PMID: 34224554 DOI: 10.1093/ajcn/nqab196] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 05/21/2021] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Wheat bran (WB) has been associated with improved gastrointestinal health and a reduced risk of metabolic disorders. Reducing the particle size of WB might increase its fermentability and facilitate cross-feeding between the gut bacteria and in this way produce health effects. OBJECTIVES We investigated the impact of WB with reduced particle size (WB RPS) on colonic fermentation and host health in normal-weight (NW) and obese (OB) participants compared with placebo (PL). METHODS During 1 mo, 36 NW and 14 OB participants daily consumed 20 g WB RPS or PL (maltodextrin). Before and after the intervention, fasting serum and fecal SCFAs, fecal metabolite profiles, and microbiota composition were measured as fermentation parameters. Fecal output, fecal dry weight (%), fat excretion, transit, stool consistency, intestinal permeability, and serum total cholesterol, triglyceride, and C-reactive protein concentrations were measured as health parameters. The impact of WB RPS on the fermentation of other carbohydrates was assessed by quantifying postprandial cumulative serum 13C-SCFA after a challenge with 13C-inulin. RESULTS WB RPS increased fasting serum acetate (P < 0.05) and total SCFA (P < 0.05) concentrations in OB participants. Fasting serum propionate concentrations were lower in OB than in NW participants at baseline (NW: 1.57 ± 0.75 µmol/L; OB: 0.89 ± 0.52 µmol/L; P < 0.01), but not after WB RPS (NW: 1.75 ± 0.77 µmol/L; OB: 1.35 ± 0.63 µmol/L; P = not significant). WB RPS did not enhance colonic fermentation of 13C-inulin and did not affect microbiota composition. Health parameters were not affected by the WB RPS intervention, either in NW or in OB participants. CONCLUSIONS WB RPS increased fasting serum SCFA concentrations in OB participants. These changes were not associated with beneficial effects on host health.
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Affiliation(s)
- Lise Deroover
- Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium
| | | | - Greet Vandermeulen
- Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium
| | - Anja Luypaerts
- Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium
| | - Jeroen Raes
- Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | | | - Kristin Verbeke
- Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium
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Protein supplementation during an energy-restricted diet induces visceral fat loss and gut microbiota amino acid metabolism activation: a randomized trial. Sci Rep 2021; 11:15620. [PMID: 34341379 PMCID: PMC8329187 DOI: 10.1038/s41598-021-94916-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 07/12/2021] [Indexed: 01/07/2023] Open
Abstract
Interactions between diet and gut microbiota are critical regulators of energy metabolism. The effects of fibre intake have been deeply studied but little is known about the impact of proteins. Here, we investigated the effects of high protein supplementation (Investigational Product, IP) in a double blind, randomised placebo-controled intervention study (NCT01755104) where 107 participants received the IP or an isocaloric normoproteic comparator (CP) alongside a mild caloric restriction. Gut microbiota profiles were explored in a patient subset (n = 53) using shotgun metagenomic sequencing. Visceral fat decreased in both groups (IP group: − 20.8 ± 23.2 cm2; CP group: − 14.5 ± 24.3 cm2) with a greater reduction (p < 0.05) with the IP supplementation in the Per Protocol population. Microbial diversity increased in individuals with a baseline low gene count (p < 0.05). The decrease in weight, fat mass and visceral fat mass significantly correlated with the increase in microbial diversity (p < 0.05). Protein supplementation had little effects on bacteria composition but major differences were seen at functional level. Protein supplementation stimulated bacterial amino acid metabolism (90% amino-acid synthesis functions enriched with IP versus 13% in CP group (p < 0.01)). Protein supplementation alongside a mild energy restriction induces visceral fat mass loss and an activation of gut microbiota amino-acid metabolism. Clinical trial registration: NCT01755104 (24/12/2012). https://clinicaltrials.gov/ct2/show/record/NCT01755104?term=NCT01755104&draw=2&rank=1.
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The Microbiota and the Gut-Brain Axis in Controlling Food Intake and Energy Homeostasis. Int J Mol Sci 2021; 22:ijms22115830. [PMID: 34072450 PMCID: PMC8198395 DOI: 10.3390/ijms22115830] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/21/2021] [Accepted: 05/26/2021] [Indexed: 12/12/2022] Open
Abstract
Obesity currently represents a major societal and health challenge worldwide. Its prevalence has reached epidemic proportions and trends continue to rise, reflecting the need for more effective preventive measures. Hypothalamic circuits that control energy homeostasis in response to food intake are interesting targets for body-weight management, for example, through interventions that reinforce the gut-to-brain nutrient signalling, whose malfunction contributes to obesity. Gut microbiota-diet interactions might interfere in nutrient sensing and signalling from the gut to the brain, where the information is processed to control energy homeostasis. This gut microbiota-brain crosstalk is mediated by metabolites, mainly short chain fatty acids, secondary bile acids or amino acids-derived metabolites and subcellular bacterial components. These activate gut-endocrine and/or neural-mediated pathways or pass to systemic circulation and then reach the brain. Feeding time and dietary composition are the main drivers of the gut microbiota structure and function. Therefore, aberrant feeding patterns or unhealthy diets might alter gut microbiota-diet interactions and modify nutrient availability and/or microbial ligands transmitting information from the gut to the brain in response to food intake, thus impairing energy homeostasis. Herein, we update the scientific evidence supporting that gut microbiota is a source of novel dietary and non-dietary biological products that may beneficially regulate gut-to-brain communication and, thus, improve metabolic health. Additionally, we evaluate how the feeding time and dietary composition modulate the gut microbiota and, thereby, the intraluminal availability of these biological products with potential effects on energy homeostasis. The review also identifies knowledge gaps and the advances required to clinically apply microbiome-based strategies to improve the gut-brain axis function and, thus, combat obesity.
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11
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De Brier N, Lemmens E, Gomand SV, Verbeke K, Delcour JA. Premilling pearling for producing wheat fractions with distinct digestibility and fermentability. Cereal Chem 2021. [DOI: 10.1002/cche.10419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Niels De Brier
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe) KU Leuven Leuven Belgium
| | - Elien Lemmens
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe) KU Leuven Leuven Belgium
| | - Sara V. Gomand
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe) KU Leuven Leuven Belgium
| | - Kristin Verbeke
- Translational Research Center for Gastrointestinal Disorders (TARGID) KU Leuven Leuven Belgium
| | - Jan A. Delcour
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe) KU Leuven Leuven Belgium
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12
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Ford AL, Nagulesapillai V, Piano A, Auger J, Girard SA, Christman M, Tompkins TA, Dahl WJ. Microbiota Stability and Gastrointestinal Tolerance in Response to a High-Protein Diet with and without a Prebiotic, Probiotic, and Synbiotic: A Randomized, Double-Blind, Placebo-Controlled Trial in Older Women. J Acad Nutr Diet 2020; 120:500-516.e10. [PMID: 32199523 DOI: 10.1016/j.jand.2019.12.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 12/11/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Higher protein intakes may help reduce sarcopenia and facilitate recovery from illness and injury in older adults. However, high-protein diets (HPDs) including animal-sourced foods may negatively perturb the microbiota, and provision of probiotics and prebiotics may mitigate these effects. OBJECTIVE The aim of this study was to examine the effects of HPD, with and without a probiotic and/or prebiotic, on gut microbiota and wellness in older women. DESIGN We conducted an 18-week, double-blind, placebo-controlled, crossover study. PARTICIPANTS/SETTING Participants were healthy, older women (mean age±standard deviation=73.7±5.6 years; n=26) recruited from Florida. INTERVENTION Participants received a weight-maintenance HPD for 2-week periods and the following, in random order: HPD alone (1.5 to 2.2 g/kg/day protein); HPD plus multistrain probiotic formulation (1.54×109Bifidobacterium bifidum HA-132, 4.62×109Bifidobacterium breve HA-129, 4.62×109Bifidobacterium longum HA-135, 4.62×109Lactobacillus acidophilus HA-122, and 4.62×109Lactobacillus plantarum HA-119), HPD plus prebiotic (5.6 g inulin), and HPD plus synbiotic (probiotic plus inulin), separated by 2-week washouts. Stools were collected per period for quantitative polymerase chain reaction (strain recovery) and 16S ribosomal RNA gene amplicon sequencing analyses (microbiota profile). Measures of gastrointestinal and general wellness were assessed. MAIN OUTCOME MEASURES Microbiota composition and probiotic strain recovery were measured. STATISTICAL ANALYSES Microbiota composition was analyzed by Wilcoxon signed-rank test and t test. Secondary outcomes were analyzing using generalized linear mixed models. RESULTS The microbiota profile demonstrated relative stability with the HPD; representation of Lactobacillus, Lactococcus, and Streptococcus were enhanced, whereas butyrate producers, Roseburia and Anaerostipes, were suppressed. Lactococcus was suppressed with synbiotic vs other HPD periods. Recovery was confirmed for all probiotic strains. Indicators of wellness were unchanged, with the exception of a minimal increase in gastrointestinal distress with inulin. Fat-free mass increased from baseline to study end. CONCLUSIONS An HPD adhering to the recommended acceptable macronutrient distribution ranges maintains wellness in healthy older women and exerts minor perturbations to the microbiome profile, a group that may benefit from a higher protein intake. ClinicalTrials.gov ID: NCT #02445560.
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A period of 10 weeks of increased protein consumption does not alter faecal microbiota or volatile metabolites in healthy older men: a randomised controlled trial. J Nutr Sci 2020; 9:e25. [PMID: 32742642 PMCID: PMC7372166 DOI: 10.1017/jns.2020.15] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 05/18/2020] [Indexed: 12/17/2022] Open
Abstract
Diet has a major influence on the composition and metabolic output of the gut microbiome. Higher-protein diets are often recommended for older consumers; however, the effect of high-protein diets on the gut microbiota and faecal volatile organic compounds (VOC) of elderly participants is unknown. The purpose of the study was to establish if the faecal microbiota composition and VOC in older men are different after a diet containing the recommended dietary intake (RDA) of protein compared with a diet containing twice the RDA (2RDA). Healthy males (74⋅2 (sd 3⋅6) years; n 28) were randomised to consume the RDA of protein (0⋅8 g protein/kg body weight per d) or 2RDA, for 10 weeks. Dietary protein was provided via whole foods rather than supplementation or fortification. The diets were matched for dietary fibre from fruit and vegetables. Faecal samples were collected pre- and post-intervention for microbiota profiling by 16S ribosomal RNA amplicon sequencing and VOC analysis by head space/solid-phase microextraction/GC-MS. After correcting for multiple comparisons, no significant differences in the abundance of faecal microbiota or VOC associated with protein fermentation were evident between the RDA and 2RDA diets. Therefore, in the present study, a twofold difference in dietary protein intake did not alter gut microbiota or VOC indicative of altered protein fermentation.
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14
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Vernocchi P, Del Chierico F, Putignani L. Gut Microbiota Metabolism and Interaction with Food Components. Int J Mol Sci 2020; 21:ijms21103688. [PMID: 32456257 PMCID: PMC7279363 DOI: 10.3390/ijms21103688] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/12/2020] [Accepted: 05/14/2020] [Indexed: 12/13/2022] Open
Abstract
The human gut contains trillions of microbes that play a central role in host biology, including the provision of key nutrients from the diet. Food is a major source of precursors for metabolite production; in fact, diet modulates the gut microbiota (GM) as the nutrients, derived from dietary intake, reach the GM, affecting both the ecosystem and microbial metabolic profile. GM metabolic ability has an impact on human nutritional status from childhood. However, there is a wide variability of dietary patterns that exist among individuals. The study of interactions with the host via GM metabolic pathways is an interesting field of research in medicine, as microbiota members produce myriads of molecules with many bioactive properties. Indeed, much evidence has demonstrated the importance of metabolites produced by the bacterial metabolism from foods at the gut level that dynamically participate in various biochemical mechanisms of a cell as a reaction to environmental stimuli. Hence, the GM modulate homeostasis at the gut level, and the alteration in their composition can concur in disease onset or progression, including immunological, inflammatory, and metabolic disorders, as well as cancer. Understanding the gut microbe–nutrient interactions will increase our knowledge of how diet affects host health and disease, thus enabling personalized therapeutics and nutrition.
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Affiliation(s)
- Pamela Vernocchi
- Unit of Human Microbiome, Bambino Gesù Children’s Hospital, IRCCS, Viale San Paolo 15, 00146 Rome, Italy;
- Correspondence: ; Tel.: +39-0668-594061; Fax: +39-0668-592218
| | - Federica Del Chierico
- Unit of Human Microbiome, Bambino Gesù Children’s Hospital, IRCCS, Viale San Paolo 15, 00146 Rome, Italy;
| | - Lorenza Putignani
- Unit of Parasitology and Unit of Human Microbiome, Bambino Gesù Children’s Hospital, IRCCS, Piazza Sant’ Onofrio 4, 00165 Rome, Italy;
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15
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In older women, a high-protein diet including animal-sourced foods did not impact serum levels and urinary excretion of trimethylamine-N-oxide. Nutr Res 2020; 78:72-81. [PMID: 32544852 DOI: 10.1016/j.nutres.2020.05.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 04/02/2020] [Accepted: 05/09/2020] [Indexed: 12/11/2022]
Abstract
Diets including red meat and other animal-sourced foods may increase proteolytic fermentation and microbial-generated trimethylamine (TMA) and, subsequently, trimethylamine-N-oxide (TMAO), a metabolite associated with increased risk of cardiovascular disease and dementia. It was hypothesized that compared to usual dietary intake, a maintenance-energy high-protein diet (HPD) would increase products of proteolytic fermentation, whereas adjunctive prebiotic, probiotic, and synbiotic supplementation may mitigate these effects. An exploratory aim was to determine the association of the relative abundance of the TMA-generating taxon, Emergencia timonensis, with serum and urinary TMAO. At 5 time points (usual dietary intake, HPD diet, HPD + prebiotic, HPD + probiotic, and HPD + synbiotic), urinary (24-hour) and serum metabolites and fecal microbiota profile of healthy older women (n = 20) were measured by liquid chromatography-tandem mass spectrometry and 16S rRNA gene amplicon sequencing analyses, respectively. The HPD induced increases in serum levels of l-carnitine, indoxyl sulfate, and phenylacetylglutamine but not TMAO or p-cresyl sulfate. Urinary excretion of l-carnitine, indoxyl sulfate, phenylacetylglutamine, and TMA increased with the HPD but not TMAO or p-cresyl sulfate. Most participants had undetectable levels of E.timonensis at baseline and only 50% during the HPD interventions, suggesting other taxa are responsible for the microbial generation of TMA in these individuals. An HPD diet with or without a prebiotic, probiotic, or synbiotic elicited an increase in products of proteolytic fermentation. The urinary l-carnitine response suggests that the additional dietary l-carnitine provided was primarily bioavailable, providing little substrate for microbial conversion to TMA and subsequent TMAO formation.
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16
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Frame LA, Costa E, Jackson SA. Current explorations of nutrition and the gut microbiome: a comprehensive evaluation of the review literature. Nutr Rev 2020; 78:798-812. [DOI: 10.1093/nutrit/nuz106] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Abstract
Context
The ability to measure the gut microbiome led to a surge in understanding and knowledge of its role in health and disease. The diet is a source of fuel for and influencer of composition of the microbiome.
Objective
To assess the understanding of the interactions between nutrition and the gut microbiome in healthy adults.
Data Sources
PubMed and Google Scholar searches were conducted in March and August 2018 and were limited to the following: English, 2010–2018, healthy adults, and reviews.
Data Extraction
A total of 86 articles were independently screened for duplicates and relevance, based on preidentified inclusion criteria.
Data Analysis
Research has focused on dietary fiber – microbiota fuel. The benefits of fiber center on short-chain fatty acids, which are required by colonocytes, improve absorption, and reduce intestinal transit time. Contrastingly, protein promotes microbial protein metabolism and potentially harmful by-products that can stagnate in the gut. The microbiota utilize and produce micronutrients; the bidirectional relationship between micronutrition and the gut microbiome is emerging.
Conclusions
Nutrition has profound effects on microbial composition, in turn affecting wide-ranging metabolic, hormonal, and neurological processes. There is no consensus on what defines a “healthy” gut microbiome. Future research must consider individual responses to diet.
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Affiliation(s)
- Leigh A Frame
- The George Washington School of Medicine and Health Sciences, Washington, USA
| | - Elise Costa
- The George Washington School of Medicine and Health Sciences, Washington, USA
| | - Scott A Jackson
- The George Washington School of Medicine and Health Sciences, Washington, USA
- National Institute of Standards and Technology, Gaithersburg, Maryland, USA
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17
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McBurney MI, Davis C, Fraser CM, Schneeman BO, Huttenhower C, Verbeke K, Walter J, Latulippe ME. Establishing What Constitutes a Healthy Human Gut Microbiome: State of the Science, Regulatory Considerations, and Future Directions. J Nutr 2019; 149:1882-1895. [PMID: 31373365 PMCID: PMC6825832 DOI: 10.1093/jn/nxz154] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/22/2019] [Accepted: 06/11/2019] [Indexed: 12/15/2022] Open
Abstract
On December 17, 2018, the North American branch of the International Life Sciences Institute (ILSI North America) convened a workshop "Can We Begin to Define a Healthy Gut Microbiome Through Quantifiable Characteristics?" with >40 invited academic, government, and industry experts in Washington, DC. The workshop objectives were to 1) develop a collective expert assessment of the state of the evidence on the human gut microbiome and associated human health benefits, 2) see if there was sufficient evidence to establish measurable gut microbiome characteristics that could serve as indicators of "health," 3) identify short- and long-term research needs to fully characterize healthy gut microbiome-host relationships, and 4) publish the findings. Conclusions were as follows: 1) mechanistic links of specific changes in gut microbiome structure with function or markers of human health are not yet established; 2) it is not established if dysbiosis is a cause, consequence, or both of changes in human gut epithelial function and disease; 3) microbiome communities are highly individualized, show a high degree of interindividual variation to perturbation, and tend to be stable over years; 4) the complexity of microbiome-host interactions requires a comprehensive, multidisciplinary research agenda to elucidate relationships between gut microbiome and host health; 5) biomarkers and/or surrogate indicators of host function and pathogenic processes based on the microbiome need to be determined and validated, along with normal ranges, using approaches similar to those used to establish biomarkers and/or surrogate indicators based on host metabolic phenotypes; 6) future studies measuring responses to an exposure or intervention need to combine validated microbiome-related biomarkers and/or surrogate indicators with multiomics characterization of the microbiome; and 7) because static genetic sampling misses important short- and long-term microbiome-related dynamic changes to host health, future studies must be powered to account for inter- and intraindividual variation and should use repeated measures within individuals.
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Affiliation(s)
- Michael I McBurney
- Human Health & Nutritional Sciences, University of Guelph, Guelph, Canada
| | | | - Claire M Fraser
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD
| | | | | | - Kristin Verbeke
- Chronic Diseases, Metabolism & Ageing, KU Leuven, Leuven, Belgium
| | - Jens Walter
- Agricultural, Food, & Nutritional Science, University of Alberta, Edmonton, Canada
| | - Marie E Latulippe
- The International Life Sciences Institute, North American Branch, Washington, DC
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18
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Alhinai EA, Walton GE, Commane DM. The Role of the Gut Microbiota in Colorectal Cancer Causation. Int J Mol Sci 2019; 20:ijms20215295. [PMID: 31653078 PMCID: PMC6862640 DOI: 10.3390/ijms20215295] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/18/2019] [Accepted: 10/23/2019] [Indexed: 12/16/2022] Open
Abstract
Here, we reviewed emerging evidence on the role of the microbial community in colorectal carcinogenesis. A healthy gut microbiota promotes intestinal homeostasis and can exert anti-cancer effects; however, this microbiota also produces a variety of metabolites that are genotoxic and which can negatively influence epithelial cell behaviour. Disturbances in the normal microbial balance, known as dysbiosis, are frequently observed in colorectal cancer (CRC) patients. Microbial species linked to CRC include certain strains of Bacteroides fragilis, Escherichia coli, Streptococcus gallolyticus, Enterococcus faecalis and Fusobacterium nucleatum, amongst others. Whether these microbes are merely passive dwellers exploiting the tumour environment, or rather, active protagonists in the carcinogenic process is the subject of much research. The incidence of chemically-induced tumours in mice models varies, depending upon the presence or absence of these microorganisms, thus strongly suggesting influences on disease causation. Putative mechanistic explanations differentially link these strains to DNA damage, inflammation, aberrant cell behaviour and immune suppression. In the future, modulating the composition and metabolic activity of this microbial community may have a role in prevention and therapy.
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Affiliation(s)
- Eiman A Alhinai
- Dietetics Department, Al Nahdha Hospital, Ministry of Health, Muscat, PO Box 937, Ruwi, Muscat PC 112, Oman.
| | - Gemma E Walton
- Department of Food and Nutritional Sciences, University of Reading, Reading RG6 6UA, UK.
| | - Daniel M Commane
- Department of Applied and Health Sciences, University of Northumbria, Newcastle Upon Tyne NE1 8ST, UK.
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19
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Cires MJ, Navarrete P, Pastene E, Carrasco-Pozo C, Valenzuela R, Medina DA, Andriamihaja M, Beaumont M, Blachier F, Gotteland M. Protective Effect of an Avocado Peel Polyphenolic Extract Rich in Proanthocyanidins on the Alterations of Colonic Homeostasis Induced by a High-Protein Diet. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:11616-11626. [PMID: 31542929 DOI: 10.1021/acs.jafc.9b03905] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Avocado peel, a byproduct from the avocado pulp industry, is a promising source of polyphenolic compounds. We evaluated the effect of a proanthocyanidin-rich avocado peel polyphenol extract (AvPPE) on the composition and metabolic activity of human fecal microbiota cultured for 24 h in a bioreactor in the presence of high protein (HP) amounts and the effect of the resulting culture supernatants (CSs) on HT-29Glc-/+ and Caco-2 cells. AvPPE decreased the HP-induced production of ammonia, H2S, propionate, and isovalerate and increased that of indole and butyrate. Microbiota composition was marginally affected by HP, whileAvPPE increased the microorganisms/abundance of phylum Actinobacteria, families Coriobacteriaceae and Ruminococcaceae, and genus Faecalibacterium. AvPPE failed to prevent the HP-induced decrease of HT-29Glc-/+ cell viability and energy efficiency but prevented the HP-induced alterations of barrier function in Caco-2 cells. Additionally, the genotoxic effect of the CSs upon HT-29Glc-/+ was attenuated by AvPPE. Therefore, AvPPE may be considered as a promising product for improving colonic homeostasis.
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Affiliation(s)
- María José Cires
- Department of Nutrition, Faculty of Medicine , University of Chile , Santiago 8380453 , Chile
| | - Paola Navarrete
- Laboratory of Microbiology and Probiotics, Institute of Nutrition and Food Technology (INTA) , University of Chile , Santiago 7830490 , Chile
- Millennium Nucleus in the Biology of Intestinal Microbiota , Santiago , Chile
| | - Edgar Pastene
- Laboratory of Pharmacognosy, Faculty of Pharmacy , University of Concepción , Concepción 4030000 , Chile
- Laboratorio de Sı́ntesis y Biotransformación de Productos Naturales, Departamento de Ciencias Básicas, Facultad de Ciencias , Universidad del Bı́o-Bı́o , Chillán 3780000 , Chile
| | - Catalina Carrasco-Pozo
- Department of Nutrition, Faculty of Medicine , University of Chile , Santiago 8380453 , Chile
- Discovery Biology, Griffith Institute for Drug Discovery , Griffith University , Nathan , Queensland 4111 , Australia
| | - Rodrigo Valenzuela
- Department of Nutrition, Faculty of Medicine , University of Chile , Santiago 8380453 , Chile
| | - Daniel A Medina
- Laboratorio de Biotecnología Aplicada, Facultad de Medicina Veterinaria , Universidad San Sebastián , Lago Panguipulli 1390 , Puerto Montt 5480000 , Chile
| | | | - Martin Beaumont
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay , Paris 75005 , France
- GenPhySE, Université de Toulouse, INRA, INPT, ENVT , Toulouse 31326 , France
| | - François Blachier
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay , Paris 75005 , France
| | - Martin Gotteland
- Department of Nutrition, Faculty of Medicine , University of Chile , Santiago 8380453 , Chile
- Laboratory of Microbiology and Probiotics, Institute of Nutrition and Food Technology (INTA) , University of Chile , Santiago 7830490 , Chile
- Millennium Nucleus in the Biology of Intestinal Microbiota , Santiago , Chile
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20
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Rasmussen NF, Rubin KH, Stougaard M, Tjønneland A, Stenager E, Lund Hetland M, Glintborg B, Bygum A, Andersen V. Impact of red meat, processed meat and fibre intake on risk of late-onset chronic inflammatory diseases: prospective cohort study on lifestyle factors using the Danish 'Diet, Cancer and Health' cohort (PROCID-DCH): protocol. BMJ Open 2019; 9:e024555. [PMID: 30928934 PMCID: PMC6475359 DOI: 10.1136/bmjopen-2018-024555] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 12/08/2018] [Accepted: 02/18/2019] [Indexed: 12/30/2022] Open
Abstract
INTRODUCTION Chronic inflammatory diseases (CIDs) (Crohn's disease, ulcerative colitis, psoriasis, psoriatic arthritis, rheumatoid arthritis and multiple sclerosis) are diseases of the immune system that have some shared genetic and environmental predisposing factors, but still few studies have investigated the effects of lifestyle on disease risk of several CIDs. The primary aim of this prospective cohort study is to investigate the impact of fibre, red meat and processed meat on risk of late-onset CID, with the perspective that results of this study can contribute in supporting future diet recommendations for effective personalised prevention. METHODS AND ANALYSIS The study will use data from 57 053 persons from the prospective Danish cohort study 'Diet, Cancer and Health' together with National Health Registry data. The follow-up period is from December 1993 to December 2018. Questionnaire data on diet and lifestyle were collected at entry to the Diet, Cancer and Health study. The outcome CID is defined as having a diagnosis of one of the CIDs registered in the National Patient Registry or, for multiple sclerosis, in the Danish Multiple Sclerosis Registry during follow-up and being treated with a drug used for the specific disease. The major outcome of the analyses will be to detect variability in risk of late onset of any CID and, if power allows, disease risk of late onset of each CID diagnosis between persons with different fibre and red meat, and processed meat intake. The outcome will be adjusted for age, sex, body mass index, physical activity, energy, alcohol, fermented dairy products, education, smoking status, hormone replacement therapy and comorbidity. ETHICS AND DISSEMINATION The study is approved by the Danish Data Protection Agency (2012-58-0018). The core study is an open register-based cohort study. The study does not need approval from the Ethics committee or Institutional Review Board by Danish law. Study findings will be disseminated through peer-reviewed journals, patient associations and presentations at international conferences. TRIAL REGISTRATION NUMBER NCT03456206; Post-results.
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Affiliation(s)
- Nathalie Fogh Rasmussen
- Faculty of Health Sciences, Aarhus University, Aarhus, Denmark
- Focused Research Unit for Molecular Diagnostic and Clinical Research, IRS-Center Sonderjylland, Hospital of Southern Jutland, Aabenraa, Denmark
| | - Katrine Hass Rubin
- OPEN - Odense Patient Data Explorative Network, Department of Clinical Research, University of Southern Denmark, and Odense University Hospital, Odense, Denmark
| | - Maria Stougaard
- OPEN - Odense Patient Data Explorative Network, Department of Clinical Research, University of Southern Denmark, and Odense University Hospital, Odense, Denmark
| | - Anne Tjønneland
- Diet, Genes and Environment, Danish Cancer Society Research Center, Copenhagen Ø, Denmark/Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Egon Stenager
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
- The Multiple Sclerosis Clinic of Southern Jutland (Sonderborg, Kolding, Esbjerg), Department of Neurology, Hospital of Southern Jutland, Sonderborg, Denmark
| | - Merete Lund Hetland
- DANBIO Registry/Copenhagen Center for Arthritis Research (COPECARE), Center for Rheumatology and Spine Diseases, Centre of Head and Orthopaedics, Rigshospitalet Glostrup, Glostrup, Denmark
| | - Bente Glintborg
- DANBIO Registry/Copenhagen Center for Arthritis Research (COPECARE), Center for Rheumatology and Spine Diseases, Centre of Head and Orthopaedics, Rigshospitalet Glostrup, Glostrup, Denmark
- Department of Rheumatology, Gentofte Hospital, Hellerup, Hovedstaden, Denmark
| | - Anette Bygum
- Department of Dermatology and Allergy Centre, Odense Universitetshospital, Odense, Denmark
| | - Vibeke Andersen
- Focused Research Unit for Molecular Diagnostic and Clinical Research, Hospital of Southern Jutland, Aabenraa, Denmark
- institute og molecular medicine, Syddansk Universitet Det Sundhedsvidenskabelige Fakultet, Odense, Denmark
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Role of Dietary Lipids in Modulating Inflammation through the Gut Microbiota. Nutrients 2019; 11:nu11010117. [PMID: 30626117 PMCID: PMC6357048 DOI: 10.3390/nu11010117] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/19/2018] [Accepted: 12/30/2018] [Indexed: 12/12/2022] Open
Abstract
Inflammation and its resolution is a tenuous balance that is under constant contest. Though several regulatory mechanisms are employed to maintain homeostasis, disruptions in the regulation of inflammation can lead to detrimental effects for the host. Of note, the gut and microbial dysbiosis are implicated in the pathology of systemic chronic low-grade inflammation which has been linked to several metabolic diseases. What remains to be described is the extent to which dietary fat and concomitant changes in the gut microbiota contribute to, or arise from, the onset of metabolic disorders. The present review will highlight the role of microorganisms in host energy regulation and several mechanisms that contribute to inflammatory pathways. This review will also discuss the immunomodulatory effects of the endocannabinoid system and its link with the gut microbiota. Finally, a brief discussion arguing for improved taxonomic resolution (at the species and strain level) is needed to deepen our current knowledge of the microbiota and host inflammatory state.
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Pantoja-Feliciano IG, Soares JW, Doherty LA, Karl JP, McClung HL, Armstrong NJ, Branck TA, Arcidiacono S. Acute stressor alters inter-species microbial competition for resistant starch-supplemented medium. Gut Microbes 2018; 10:439-446. [PMID: 31309868 PMCID: PMC6748575 DOI: 10.1080/19490976.2018.1554962] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Gut microbiome community dynamics are maintained by complex microbe-microbe and microbe-host interactions, which can be disturbed by stress. In vivo studies on the dynamics and manipulation of those interactions are costly and slow, but can be accelerated using in vitro fermentation. Herein, in vitro fermentation was used to determine how an acute stressor, a sudden change in diet, impacts inter-bacterial species competition for resistant starch-supplemented medium (RSM). Fermentation vessels were seeded with fecal samples collected from 10 individuals consuming a habitual diet or U.S. military rations for 21 days. Lactobacillus spp. growth in response to RSM was attenuated following ration consumption, whereas growth of Ruminococcus bromii was enhanced. These differences were not evident in the pre-fermentation samples. Findings demonstrate how incorporating in vitro fermentation into clinical studies can increase understanding of stress-induced changes in nutrient-microbiome dynamics, and suggest that sudden changes in diet may impact inter-species competition for substrates.
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Affiliation(s)
- Ida Gisela Pantoja-Feliciano
- Soldier Performance and Optimization Directorate (SPOD), U.S. Army Natick Soldier, Research, Development and Engineering Center (NSRDEC), Natick, MA, USA
| | - Jason W. Soares
- Soldier Performance and Optimization Directorate (SPOD), U.S. Army Natick Soldier, Research, Development and Engineering Center (NSRDEC), Natick, MA, USA
| | - Laurel A. Doherty
- Soldier Performance and Optimization Directorate (SPOD), U.S. Army Natick Soldier, Research, Development and Engineering Center (NSRDEC), Natick, MA, USA
| | - J. Philip Karl
- Military Nutrition Division, U.S. Army Research Institute of Environmental Medicine (USARIEM), Natick, MA, USA
| | - Holly L. McClung
- Military Nutrition Division, U.S. Army Research Institute of Environmental Medicine (USARIEM), Natick, MA, USA
| | - Nicholes J. Armstrong
- Military Nutrition Division, U.S. Army Research Institute of Environmental Medicine (USARIEM), Natick, MA, USA
| | - Tobyn A. Branck
- Soldier Performance and Optimization Directorate (SPOD), U.S. Army Natick Soldier, Research, Development and Engineering Center (NSRDEC), Natick, MA, USA
| | - Steven Arcidiacono
- Soldier Performance and Optimization Directorate (SPOD), U.S. Army Natick Soldier, Research, Development and Engineering Center (NSRDEC), Natick, MA, USA,CONTACT Steven Arcidiacono Soldier Performance and Optimization Directorate (SPOD), U.S. Army Natick Soldier, Research, Development and Engineering Center (NSRDEC), Natick
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Karl JP, Berryman CE, Young AJ, Radcliffe PN, Branck TA, Pantoja-Feliciano IG, Rood JC, Pasiakos SM. Associations between the gut microbiota and host responses to high altitude. Am J Physiol Gastrointest Liver Physiol 2018; 315:G1003-G1015. [PMID: 30212253 PMCID: PMC6336946 DOI: 10.1152/ajpgi.00253.2018] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Hypobaric hypoxia and dietary protein and fat intakes have been independently associated with an altered gastrointestinal (GI) environment and gut microbiota, but little is known regarding host-gut microbiota interactions at high altitude (HA) and the impact of diet macronutrient composition. This study aimed to determine the effect of dietary protein:fat ratio manipulation on the gut microbiota and GI barrier function during weight loss at high altitude (HA) and to identify associations between the gut microbiota and host responses to HA. Following sea-level (SL) testing, 17 healthy males were transported to HA (4,300 m) and randomly assigned to consume provided standard protein (SP; 1.1 g·kg-1·day-1, 39% fat) or higher protein (HP; 2.1 g·kg-1·day-1, 23% fat) carbohydrate-matched hypocaloric diets for 22 days. Fecal microbiota composition and metabolites, GI barrier function, GI symptoms, and acute mountain sickness (AMS) severity were measured. Macronutrient intake did not impact fecal microbiota composition, had only transient effects on microbiota metabolites, and had no effect on increases in small intestinal permeability, GI symptoms, and inflammation observed at HA. AMS severity was also unaffected by diet but in exploratory analyses was associated with higher SL-relative abundance of Prevotella, a known driver of interindividual variability in human gut microbiota composition, and greater microbiota diversity after AMS onset. Findings suggest that the gut microbiota may contribute to variability in host responses to HA independent of the dietary protein:fat ratio but should be considered preliminary and hypothesis generating due to the small sample size and exploratory nature of analyses associating the fecal microbiota and host responses to HA. NEW & NOTEWORTHY This study is the first to examine interactions among diet, the gut microbiota, and host responses to weight loss at high altitude (HA). Observed associations among the gut microbiota, weight loss at HA, and acute mountain sickness provide evidence that the microbiota may contribute to variability in host responses to HA. In contrast, dietary protein:fat ratio had only minimal, transient effects on gut microbiota composition and bacterial metabolites which were likely not of clinical consequence.
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Affiliation(s)
- J. Philip Karl
- 1Military Nutrition Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts
| | - Claire E. Berryman
- 1Military Nutrition Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts,2Oak Ridge Institute for Science and Education, Belcamp, Maryland
| | - Andrew J. Young
- 1Military Nutrition Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts,2Oak Ridge Institute for Science and Education, Belcamp, Maryland
| | - Patrick N. Radcliffe
- 1Military Nutrition Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts,2Oak Ridge Institute for Science and Education, Belcamp, Maryland
| | - Tobyn A. Branck
- 3Soldier Performance Optimization Directorate, Natick Soldier Research, Development and Engineering Center, Natick, Massachusetts
| | - Ida G. Pantoja-Feliciano
- 3Soldier Performance Optimization Directorate, Natick Soldier Research, Development and Engineering Center, Natick, Massachusetts
| | | | - Stefan M. Pasiakos
- 1Military Nutrition Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts
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24
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Al Hinai EA, Kullamethee P, Rowland IR, Swann J, Walton GE, Commane DM. Modelling the role of microbial p-cresol in colorectal genotoxicity. Gut Microbes 2018; 10:398-411. [PMID: 30359553 PMCID: PMC6546321 DOI: 10.1080/19490976.2018.1534514] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Background: A greater understanding of mechanisms explaining the interactions between diet and the gut microbiota in colorectal cancer is desirable. Genotoxic microbial metabolites present in the colon may be implicated in carcinogenesis and potentially influenced by diet. Aims: We hypothesised that microbial p-cresol is a colonic genotoxin and set out to model potential exposures in the colon and the effects of these exposures on colonic cells. Methods: Batch culture fermentations with human faecal inoculate were used to determine the synthesis of p-cresol and other metabolites in response to various substrates. The fermentation supernatants were evaluated for genotoxicity and the independent effects of p-cresol on colonic cells were studied in vitro. Results: In batch culture fermentation, supplementary protein increased the synthesis of phenols, indoles and p-cresol, whereas supplementary fructoligosaccharide (FOS) increased the synthesis of short chain fatty acids. The p-cresol was the greatest predictor of genotoxicity against colonocytes in the fermentation supernatants. Spiking fermentation supernatants with exogenous p-cresol further increased DNA damage, and independently p-cresol induced DNA damage in a dose-dependent manner against HT29 and Caco-2 cells and influenced cell cycle kinetics. Conclusions: In the colon p-cresol may reach physiologically significant concentrations which contribute to genotoxic exposures in the intestinal lumen, p-cresol production may be attenuated by substrate, and therefore diet, making it a potential modifiable biomarker of genotoxicity in the colon.
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Affiliation(s)
- Eiman Abdulla Al Hinai
- Department of Food and Nutritional Sciences, University of Reading, Reading, UK,Dietetics Department, Al Nahdha Hospital, Ministry of Health, Muscat, Sultanate of Oman
| | - Piyarach Kullamethee
- Department of innovation and technology of product development, Faculty of Agro-industry, King Mongkut’s University of Technology North Bangkok, Prachinburi, Thailand
| | - Ian R. Rowland
- Department of Food and Nutritional Sciences, University of Reading, Reading, UK
| | - Jonathan Swann
- Faculty of Medicine, Department of Surgery & Cancer, Imperial College London, London, UK
| | - Gemma E. Walton
- Department of Food and Nutritional Sciences, University of Reading, Reading, UK
| | - Daniel M. Commane
- Department of Applied and Health Sciences, University of Northumbria, Newcastle Upon Tyne, UK,CONTACT Daniel M. Commane Department of Applied and Health Sciences, University of Northumbria, Newcastle Upon Tyne, United Kingdom
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25
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Blachier F, Beaumont M, Portune KJ, Steuer N, Lan A, Audebert M, Khodorova N, Andriamihaja M, Airinei G, Benamouzig R, Davila AM, Armand L, Rampelli S, Brigidi P, Tomé D, Claus SP, Sanz Y. High-protein diets for weight management: Interactions with the intestinal microbiota and consequences for gut health. A position paper by the my new gut study group. Clin Nutr 2018; 38:1012-1022. [PMID: 30274898 DOI: 10.1016/j.clnu.2018.09.016] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 09/10/2018] [Accepted: 09/13/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND & AIMS This review examines to what extent high-protein diets (HPD), which may favor body weight loss and improve metabolic outcomes in overweight and obese individuals, may also impact the gut environment, shaping the microbiota and the host-microbe (co)metabolic pathways and products, possibly affecting large intestine mucosa homeostasis. METHODS PubMed-referenced publications were analyzed with an emphasis on dietary intervention studies involving human volunteers in order to clarify the beneficial vs. deleterious effects of HPD in terms of both metabolic and gut-related health parameters; taking into account the interactions with the gut microbiota. RESULTS HPD generally decrease body weight and improve blood metabolic parameters, but also modify the fecal and urinary contents in various bacterial metabolites and co-metabolites. The effects of HPD on the intestinal microbiota composition appear rather heterogeneous depending on the type of dietary intervention. Recently, HPD consumption was shown to modify the expression of genes playing key roles in homeostatic processes in the rectal mucosa, without evidence of intestinal inflammation. Importantly, the effects of HPD on the gut were dependent on the protein source (i.e. from plant or animal sources), a result which should be considered for further investigations. CONCLUSION Although HPD appear to be efficient for weight loss, the effects of HPD on microbiota-derived metabolites and gene expression in the gut raise new questions on the impact of HPD on the large intestine mucosa homeostasis leading the authors to recommend some caution regarding the utilization of HPD, notably in a recurrent and/or long-term ways.
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Affiliation(s)
- François Blachier
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France.
| | - Martin Beaumont
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Kevin Joseph Portune
- Microbial Ecology, Nutrition and Health Research Unit, Institute of Agronomy and Food Technology, Spanish National Research Council, Valencia, Spain
| | - Nils Steuer
- Department of Gastroenterology, Avicenne Hospital, Assistance Publique-Hôpitaux de Paris, Bobigny, France
| | - Annaïg Lan
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Marc Audebert
- Toxalim, Research Centre in Food Toxicology, INRA, Toulouse, France
| | - Nadezda Khodorova
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | | | - Gheorghe Airinei
- Department of Gastroenterology, Avicenne Hospital, Assistance Publique-Hôpitaux de Paris, Bobigny, France
| | - Robert Benamouzig
- Department of Gastroenterology, Avicenne Hospital, Assistance Publique-Hôpitaux de Paris, Bobigny, France
| | - Anne-Marie Davila
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Lucie Armand
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Simone Rampelli
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Patrizia Brigidi
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Daniel Tomé
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Sandrine Paule Claus
- Department of Food Nutritional Sciences, University of Reading, Reading, United Kingdom
| | - Yolanda Sanz
- Microbial Ecology, Nutrition and Health Research Unit, Institute of Agronomy and Food Technology, Spanish National Research Council, Valencia, Spain
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26
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Karl JP, Hatch AM, Arcidiacono SM, Pearce SC, Pantoja-Feliciano IG, Doherty LA, Soares JW. Effects of Psychological, Environmental and Physical Stressors on the Gut Microbiota. Front Microbiol 2018; 9:2013. [PMID: 30258412 PMCID: PMC6143810 DOI: 10.3389/fmicb.2018.02013] [Citation(s) in RCA: 260] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 08/09/2018] [Indexed: 12/13/2022] Open
Abstract
Stress, a ubiquitous part of daily human life, has varied biological effects which are increasingly recognized as including modulation of commensal microorganisms residing in the gastrointestinal tract, the gut microbiota. In turn, the gut microbiota influences the host stress response and associated sequelae, thereby implicating the gut microbiota as an important mediator of host health. This narrative review aims to summarize evidence concerning the impact of psychological, environmental, and physical stressors on gut microbiota composition and function. The stressors reviewed include psychological stress, circadian disruption, sleep deprivation, environmental extremes (high altitude, heat, and cold), environmental pathogens, toxicants, pollutants, and noise, physical activity, and diet (nutrient composition and food restriction). Stressors were selected for their direct relevance to military personnel, a population that is commonly exposed to these stressors, often at extremes, and in combination. However, the selected stressors are also common, alone or in combination, in some civilian populations. Evidence from preclinical studies collectively indicates that the reviewed stressors alter the composition, function and metabolic activity of the gut microbiota, but that effects vary across stressors, and can include effects that may be beneficial or detrimental to host health. Translation of these findings to humans is largely lacking at present. This gap precludes concluding with certainty that transient or cumulative exposures to psychological, environmental, and physical stressors have any consistent, meaningful impact on the human gut microbiota. However, provocative preclinical evidence highlights a need for translational research aiming to elucidate the impact of stressors on the human gut microbiota, and how the gut microbiota can be manipulated, for example by using nutrition, to mitigate adverse stress responses.
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Affiliation(s)
- J. Philip Karl
- Military Nutrition Division, U.S. Army Research Institute of Environmental Medicine, Natick, MA, United States
| | - Adrienne M. Hatch
- Military Nutrition Division, U.S. Army Research Institute of Environmental Medicine, Natick, MA, United States
| | - Steven M. Arcidiacono
- Soldier Performance Optimization, Natick Soldier Research, Development and Engineering Center, Natick, MA, United States
| | - Sarah C. Pearce
- Combat Feeding Directorate, Natick Soldier Research, Development and Engineering Center, Natick, MA, United States
| | - Ida G. Pantoja-Feliciano
- Soldier Performance Optimization, Natick Soldier Research, Development and Engineering Center, Natick, MA, United States
| | - Laurel A. Doherty
- Soldier Performance Optimization, Natick Soldier Research, Development and Engineering Center, Natick, MA, United States
| | - Jason W. Soares
- Soldier Performance Optimization, Natick Soldier Research, Development and Engineering Center, Natick, MA, United States
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27
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Le Gall G, Guttula K, Kellingray L, Tett AJ, Ten Hoopen R, Kemsley EK, Savva GM, Ibrahim A, Narbad A. Metabolite quantification of faecal extracts from colorectal cancer patients and healthy controls. Oncotarget 2018; 9:33278-33289. [PMID: 30279959 PMCID: PMC6161785 DOI: 10.18632/oncotarget.26022] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 08/10/2018] [Indexed: 12/19/2022] Open
Abstract
Colorectal cancer (CRC), a primary cause of morbidity and mortality worldwide is expected to rise in the coming years. A better understanding of the metabolic changes taking place during the disease progression is needed for effective improvements of screening strategies and treatments. In the present study, Nuclear Magnetic Resonance (NMR) metabolomics was used to quantify the absolute concentrations of metabolites in faecal extracts from two cohorts of CRC patients and healthy controls. The quantification of over 80 compounds revealed that patients with CRC had increased faecal concentrations of branched chain fatty acids (BCFA), isovalerate and isobutyrate plus valerate and phenylacetate but diminished concentrations of amino acids, sugars, methanol and bile acids (deoxycholate, lithodeoxycholate and cholate). These results suggest that alterations in microbial activity and composition could have triggered an increase in utilisation of host intestinal slough cells and mucins and led to an increase in BCFA, valerate and phenylacetate. Concurrently, a general reduction in the microbial metabolic function may have led to reduced levels of other components (amino acids, sugars and bile acids) normally produced under healthy conditions. This study provides a thorough listing of the most abundant compounds found in human faecal waters and presents a template for absolute quantification of metabolites. The production of BCFA and phenylacetate in colonic carcinogenesis warrants further investigations.
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Affiliation(s)
| | - Kiran Guttula
- Division of Molecular Histopathology, Department of Pathology, University of Cambridge, Cambridge, UK
| | - Lee Kellingray
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - Adrian J Tett
- Centre for Integrative Biology, University of Trento, Trento, Italy
| | - Rogier Ten Hoopen
- Division of Molecular Histopathology, Department of Pathology, University of Cambridge, Cambridge, UK
| | - E Kate Kemsley
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - George M Savva
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - Ashraf Ibrahim
- Division of Molecular Histopathology, Department of Pathology, University of Cambridge, Cambridge, UK
| | - Arjan Narbad
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
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28
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Gilbert MS, Ijssennagger N, Kies AK, van Mil SWC. Protein fermentation in the gut; implications for intestinal dysfunction in humans, pigs, and poultry. Am J Physiol Gastrointest Liver Physiol 2018; 315:G159-G170. [PMID: 29597354 DOI: 10.1152/ajpgi.00319.2017] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The amount of dietary protein is associated with intestinal disease in different vertebrate species. In humans, this is exemplified by the association between high-protein intake and fermentation metabolite concentrations in patients with inflammatory bowel disease. In production animals, dietary protein intake is associated with postweaning diarrhea in piglets and with the occurrence of wet litter in poultry. The underlying mechanisms by which dietary protein contributes to intestinal problems remain largely unknown. Fermentation of undigested protein in the hindgut results in formation of fermentation products including short-chain fatty acids, branched-chain fatty acids, ammonia, phenolic and indolic compounds, biogenic amines, hydrogen sulfide, and nitric oxide. Here, we review the mechanisms by which these metabolites may cause intestinal disease. Studies addressing how different metabolites induce epithelial damage rely mainly on cell culture studies and occasionally on mice or rat models. Often, contrasting results were reported. The direct relevance of such studies for human, pig, and poultry gut health is therefore questionable and does not suffice for the development of interventions to improve gut health. We discuss a roadmap to improve our understanding of gut metabolites and microbial species associated with intestinal health in humans and production animals and to determine whether these metabolite/bacterial networks cause epithelial damage. The outcomes of these studies will dictate proof-of-principle studies to eliminate specific metabolites and or bacterial strains and will provide the basis for interventions aiming to improve gut health.
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Affiliation(s)
- Myrthe S Gilbert
- Animal Nutrition Group, Department of Animal Sciences, Wageningen University and Research , Wageningen , The Netherlands
| | - Noortje Ijssennagger
- Center for Molecular Medicine, University Medical Center Utrecht, Utrecht University , Utrecht , The Netherlands
| | - Arie K Kies
- Animal Nutrition Group, Department of Animal Sciences, Wageningen University and Research , Wageningen , The Netherlands.,DSM Nutritional Products, Animal Nutrition and Health, Kaiseraugst, Switzerland
| | - Saskia W C van Mil
- Center for Molecular Medicine, University Medical Center Utrecht, Utrecht University , Utrecht , The Netherlands
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29
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Kopp TI, Vogel U, Tjonneland A, Andersen V. Meat and fiber intake and interaction with pattern recognition receptors (TLR1, TLR2, TLR4, and TLR10) in relation to colorectal cancer in a Danish prospective, case-cohort study. Am J Clin Nutr 2018; 107:465-479. [PMID: 29566186 DOI: 10.1093/ajcn/nqx011] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 10/20/2017] [Indexed: 12/13/2022] Open
Abstract
Background Meat and dietary fiber are associated with increased and decreased risk of colorectal cancer (CRC), respectively. Toll-like receptors (TLRs) regulate the intestinal immune response in a complex interplay between the mucosal epithelium and the microbiota and may therefore be important modulators of diet-induced CRC together with other inflammatory mediators. Objective Our aim was to investigate the association between functional TLR polymorphisms and risk of CRC and the interaction with dietary factors. Additionally, interactions with previously studied polymorphisms in IL10, IL1B, PTGS2, and NFKB1 were assessed in order to examine possible biological pathways in meat-induced CRC. Design A nested case-cohort study of 897 CRC cases and 1689 randomly selected participants from the Danish prospective "Diet, Cancer and Health" study encompassing 57,053 persons was performed using Cox proportional hazard models and the likelihood ratio test. Results We found associations between polymorphisms in TLR2 (P = 0.018) and TLR4 (P = 0.044) and risk of CRC per se, interactions between intake of red and processed meat (10 g/d) and polymorphisms in TLR1 (P-interaction = 0.032) and TLR10 (P-interaction = 0.026 and 0.036), and intake of cereals (50 g/d) and TLR4 (P-interaction = 0.044) in relation to risk of CRC. Intake of red and processed meat also interacted with combinations of polymorphisms in TLR1 and TLR10 and polymorphisms in NFKB1, IL10, IL1B, and PTGS2 (P-interaction; TLR1/rs4833095 × PTGS2/rs20417 = 0.021, TLR10/rs11096955 × IL10/rs3024505 = 0.047, TLR10/rs11096955 × PTGS2/rs20417 = 0.017, TLR10/rs4129009 × NFKB1/rs28362491 = 0.027, TLR10/rs4129009 × IL1B/rs4848306 = 0.020, TLR10/rs4129009 × IL1B/rs1143623 = 0.021, TLR10/rs4129009 × PTGS2/rs20417 = 0.027), whereas intake of dietary fiber (10 g/d) interacted with combinations of polymorphisms in TLR4, IL10, and PTGS2 (P-interaction; TLR4/rs1554973 × IL10/rs3024505 = 0.0012, TLR4/rs1554973 × PTGS2/rs20417 = 0.0041, TLR4/rs1554973 × PTGS2/rs5275 = 0.0064). Conclusions Our study suggests that meat intake may activate TLRs at the epithelial surface, leading to CRC via inflammation by nuclear transcription factor-κB-initiated transcription of inflammatory genes, whereas intake of fiber may protect against CRC via TLR4-mediated secretion of interleukin-10 and cyclooxygenase-2. Our results should be replicated in other prospective cohorts with well-characterized participants. The trial was registered at www.clinicaltrials.gov as NCT03250637.
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Affiliation(s)
- Tine Iskov Kopp
- Research Centre for Prevention and Health, Rigshospitalet-Glostrup, Glostrup, Denmark.,Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Ulla Vogel
- National Research Centre for the Working Environment, Copenhagen, Denmark
| | | | - Vibeke Andersen
- Focused Research Unit for Molecular Diagnostic and Clinical Research, Laboratory Center, Hospital of Southern Jutland, Aabenraa, Denmark.,Institute of Regional Health Research-Center Sønderjylland.,Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
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30
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Christensen R, Heitmann BL, Andersen KW, Nielsen OH, Sørensen SB, Jawhara M, Bygum A, Hvid L, Grauslund J, Wied J, Glerup H, Fredberg U, Villadsen JA, Kjær SG, Fallingborg J, Moghadd SAGR, Knudsen T, Brodersen J, Frøjk J, Dahlerup JF, Bojesen AB, Sorensen GL, Thiel S, Færgeman NJ, Brandslund I, Bennike TB, Stensballe A, Schmidt EB, Franke A, Ellinghaus D, Rosenstiel P, Raes J, Boye M, Werner L, Nielsen CL, Munk HL, Nexøe AB, Ellingsen T, Holmskov U, Kjeldsen J, Andersen V. Impact of red and processed meat and fibre intake on treatment outcomes among patients with chronic inflammatory diseases: protocol for a prospective cohort study of prognostic factors and personalised medicine. BMJ Open 2018; 8:e018166. [PMID: 29439003 PMCID: PMC5829767 DOI: 10.1136/bmjopen-2017-018166] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
INTRODUCTION Chronic inflammatory diseases (CIDs) are frequently treated with biological medications, specifically tumour necrosis factor inhibitors (TNFi)). These medications inhibit the pro-inflammatory molecule TNF alpha, which has been strongly implicated in the aetiology of these diseases. Up to one-third of patients do not, however, respond to biologics, and lifestyle factors are assumed to affect treatment outcomes. Little is known about the effects of dietary lifestyle as a prognostic factor that may enable personalised medicine. The primary outcome of this multidisciplinary collaborative study will be to identify dietary lifestyle factors that support optimal treatment outcomes. METHODS AND ANALYSIS This prospective cohort study will enrol 320 patients with CID who are prescribed a TNFi between June 2017 and March 2019. Included among the patients with CID will be patients with inflammatory bowel disease (Crohn's disease and ulcerative colitis), rheumatic disorders (rheumatoid arthritis, axial spondyloarthritis, psoriatic arthritis), inflammatory skin diseases (psoriasis, hidradenitis suppurativa) and non-infectious uveitis. At baseline (pretreatment), patient characteristics will be assessed using patient-reported outcome measures, clinical assessments of disease activity, quality of life and lifestyle, in addition to registry data on comorbidity and concomitant medication(s). In accordance with current Danish standards, follow-up will be conducted 14-16 weeks after treatment initiation. For each disease, evaluation of successful treatment response will be based on established primary and secondary endpoints, including disease-specific core outcome sets. The major outcome of the analyses will be to detect variability in treatment effectiveness between patients with different lifestyle characteristics. ETHICS AND DISSEMINATION The principle goal of this project is to improve the quality of life of patients suffering from CID by providing evidence to support dietary and other lifestyle recommendations that may improve clinical outcomes. The study is approved by the Ethics Committee (S-20160124) and the Danish Data Protecting Agency (2008-58-035). Study findings will be disseminated through peer-reviewed journals, patient associations and presentations at international conferences. TRIAL REGISTRATION NUMBER NCT03173144; Pre-results.
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Affiliation(s)
- Robin Christensen
- Musculoskeletal Statistics Unit, The Parker Institute, Bispebjerg and Frederiksberg Hospital, Denmark
| | - Berit L Heitmann
- Research Unit for Dietary Studies, The Parker Institute, Bispebjerg and Frederiksberg Hospital, Denmark
- Section for General Medicine, Department of Public Health, University of Copenhagen, Denmark
- National Institute of Public Health, University of Southern Denmark, Odense, Denmark
| | - Karina Winther Andersen
- Focused Research Unit for Molecular Diagnostic and Clinical Research, IRS-Center Sonderjylland, Hospital of Southern Jutland, Aabenraa, Denmark
- Organ Centre, Hospital of Southern Jutland, Aabenraa, Denmark
| | - Ole Haagen Nielsen
- Department of Gastroenterology D112, Herlev Hospital, University of Copenhagen, Herlev, Denmark
| | - Signe Bek Sørensen
- Focused Research Unit for Molecular Diagnostic and Clinical Research, IRS-Center Sonderjylland, Hospital of Southern Jutland, Aabenraa, Denmark
- Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Mohamad Jawhara
- Focused Research Unit for Molecular Diagnostic and Clinical Research, IRS-Center Sonderjylland, Hospital of Southern Jutland, Aabenraa, Denmark
- Organ Centre, Hospital of Southern Jutland, Aabenraa, Denmark
- institute of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Anette Bygum
- Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark
| | - Lone Hvid
- Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark
| | - Jakob Grauslund
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Ophthalmology, Odense University Hospital, Odense, Denmark
| | - Jimmi Wied
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Ophthalmology, Odense University Hospital, Odense, Denmark
| | - Henning Glerup
- Diagnostic Centre, Silkeborg Regional Hospital, Silkeborg, Denmark
| | - Ulrich Fredberg
- Diagnostic Centre, Silkeborg Regional Hospital, Silkeborg, Denmark
- Department of Rheumatology, Odense University Hospital, Odense, Denmark
| | | | - Søren Geill Kjær
- Diagnostic Centre, Silkeborg Regional Hospital, Silkeborg, Denmark
| | - Jan Fallingborg
- Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Seyed A G R Moghadd
- Department of Internal Medicine, Herning Regional Hospital, Herning, Denmark
| | - Torben Knudsen
- Department of Gastroenterology, Hospital of Southwest Jutland, Esbjerg, Denmark
| | - Jacob Brodersen
- Department of Gastroenterology, Hospital of Southwest Jutland, Esbjerg, Denmark
| | - Jesper Frøjk
- Department of Gastroenterology, Hospital of Southwest Jutland, Esbjerg, Denmark
| | - Jens Frederik Dahlerup
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Anders Bo Bojesen
- Focused Research Unit for Molecular Diagnostic and Clinical Research, IRS-Center Sonderjylland, Hospital of Southern Jutland, Aabenraa, Denmark
| | - Grith Lykke Sorensen
- Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Steffen Thiel
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Nils J Færgeman
- Department of Biochemistry and Molecular Biology, Villum Center for Bioanalytical Sciences, University of Southern Denmark, Odense, Denmark
| | - Ivan Brandslund
- institute of Regional Health Research, University of Southern Denmark, Odense, Denmark
- Department of Clinical Biochemistry, Lillebaelt Hospital, Vejle, Denmark
| | - Tue Bjerg Bennike
- Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Allan Stensballe
- Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Erik Berg Schmidt
- Department of Cardiology, Aalborg University Hospital, Ålborg, Denmark
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - David Ellinghaus
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Philip Rosenstiel
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Jeroen Raes
- Departmentof Microbiology and Immunology, Rega Institute, KU Leuven—University of Leuven, Leuven, Belgium
- VIB, Center for the Biology of Disease, Leuven, Belgium
| | - Mette Boye
- Focused Research Unit for Molecular Diagnostic and Clinical Research, IRS-Center Sonderjylland, Hospital of Southern Jutland, Aabenraa, Denmark
| | - Lars Werner
- The Danish Psoriasis Association, The Danish Psoriasis Association, Tåstrup, Denmark
| | | | - Heidi Lausten Munk
- Diagnostic Centre, Silkeborg Regional Hospital, Silkeborg, Denmark
- Department of Rheumatology, Odense University Hospital, Odense, Denmark
| | | | - Torkell Ellingsen
- Diagnostic Centre, Silkeborg Regional Hospital, Silkeborg, Denmark
- Department of Rheumatology, Odense University Hospital, Odense, Denmark
| | - Uffe Holmskov
- Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Jens Kjeldsen
- Department of Gastroenterology, Odense University Hospital, Odense, Denmark
| | - Vibeke Andersen
- Focused Research Unit for Molecular Diagnostic and Clinical Research, IRS-Center Sonderjylland, Hospital of Southern Jutland, Aabenraa, Denmark
- Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
- institute of Regional Health Research, University of Southern Denmark, Odense, Denmark
- OPEN, University of Southern Denmark, Odense, Denmark
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31
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Korpela K. Diet, Microbiota, and Metabolic Health: Trade-Off Between Saccharolytic and Proteolytic Fermentation. Annu Rev Food Sci Technol 2018; 9:65-84. [PMID: 29298101 DOI: 10.1146/annurev-food-030117-012830] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The intestinal microbiota have emerged as a central regulator of host metabolism and immune function, mediating the effects of diet on host health. However, the large diversity and individuality of the gut microbiota have made it difficult to draw conclusions about microbiota responses to dietary interventions. In the light of recent research, certain general patterns are emerging, revealing how the ecology of the gut microbiota profoundly depends on the quality and quantity of dietary carbohydrates and proteins. In this review, I provide an overview of the dependence of microbial ecology in the human colon on diet and how the effects of diet on host health depend partially on the microbiota. Understanding how the individual-specific microbiota respond to short- and long-term dietary changes and how they influence host energy homeostasis will enable targeted interventions to achieve specific outcomes, such as weight loss in obesity or weight gain in malnutrition.
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Affiliation(s)
- Katri Korpela
- Department of Bacteriology and Immunology, Immunobiology Research Program, 00014 University of Helsinki, Finland; .,European Molecular Biology Laboratory, 69117 Heidelberg, Germany
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32
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Beaumont M, Portune KJ, Steuer N, Lan A, Cerrudo V, Audebert M, Dumont F, Mancano G, Khodorova N, Andriamihaja M, Airinei G, Tomé D, Benamouzig R, Davila AM, Claus SP, Sanz Y, Blachier F. Quantity and source of dietary protein influence metabolite production by gut microbiota and rectal mucosa gene expression: a randomized, parallel, double-blind trial in overweight humans. Am J Clin Nutr 2017; 106:1005-1019. [PMID: 28903954 DOI: 10.3945/ajcn.117.158816] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 08/01/2017] [Indexed: 12/21/2022] Open
Abstract
Background: Although high-protein diets (HPDs) are frequently consumed for body-weight control, little is known about the consequences for gut microbiota composition and metabolic activity and for large intestine mucosal homeostasis. Moreover, the effects of HPDs according to the source of protein need to be considered in this context.Objective: The objective of this study was to evaluate the effects of the quantity and source of dietary protein on microbiota composition, bacterial metabolite production, and consequences for the large intestinal mucosa in humans.Design: A randomized, double-blind, parallel-design trial was conducted in 38 overweight individuals who received a 3-wk isocaloric supplementation with casein, soy protein, or maltodextrin as a control. Fecal and rectal biopsy-associated microbiota composition was analyzed by 16S ribosomal DNA sequencing. Fecal, urinary, and plasma metabolomes were assessed by 1H-nuclear magnetic resonance. Mucosal transcriptome in rectal biopsies was determined with the use of microarrays.Results: HPDs did not alter the microbiota composition, but induced a shift in bacterial metabolism toward amino acid degradation with different metabolite profiles according to the protein source. Correlation analysis identified new potential bacterial taxa involved in amino acid degradation. Fecal water cytotoxicity was not modified by HPDs, but was associated with a specific microbiota and bacterial metabolite profile. Casein and soy protein HPDs did not induce inflammation, but differentially modified the expression of genes playing key roles in homeostatic processes in rectal mucosa, such as cell cycle or cell death.Conclusions: This human intervention study shows that the quantity and source of dietary proteins act as regulators of gut microbiota metabolite production and host gene expression in the rectal mucosa, raising new questions on the impact of HPDs on the large intestine mucosa homeostasis. This trial was registered at clinicaltrials.gov as NCT02351297.
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Affiliation(s)
- Martin Beaumont
- Mixed research unit Nutrition Physiology and Ingestive Behavior, AgroParisTech, French National Institute for Agricultural Research (INRA), University of Paris-Saclay, Paris, France
| | - Kevin Joseph Portune
- Microbial Ecology, Nutrition and Health Research Unit, Institute of agronomy and food technology - Spanish National Research Council, Valencia, Spain
| | - Nils Steuer
- Department of Gastroenterology, Avicenne Hospital, Public Assistance-Hospital of Paris, Bobigny, France
| | - Annaïg Lan
- Mixed research unit Nutrition Physiology and Ingestive Behavior, AgroParisTech, French National Institute for Agricultural Research (INRA), University of Paris-Saclay, Paris, France
| | - Victor Cerrudo
- Microbial Ecology, Nutrition and Health Research Unit, Institute of agronomy and food technology - Spanish National Research Council, Valencia, Spain
| | - Marc Audebert
- Research Centre in Food Toxicology, University of Toulouse, INRA, Toulouse National Veterinary School, Polytechnic National Institute - Purpan, Paul Sabatier University, Toulouse, France
| | | | - Giulia Mancano
- Department of Food and Nutritional Sciences, University of Reading, Reading, United Kingdom
| | - Nadezda Khodorova
- Mixed research unit Nutrition Physiology and Ingestive Behavior, AgroParisTech, French National Institute for Agricultural Research (INRA), University of Paris-Saclay, Paris, France
| | - Mireille Andriamihaja
- Mixed research unit Nutrition Physiology and Ingestive Behavior, AgroParisTech, French National Institute for Agricultural Research (INRA), University of Paris-Saclay, Paris, France
| | - Gheorghe Airinei
- Department of Gastroenterology, Avicenne Hospital, Public Assistance-Hospital of Paris, Bobigny, France
| | - Daniel Tomé
- Mixed research unit Nutrition Physiology and Ingestive Behavior, AgroParisTech, French National Institute for Agricultural Research (INRA), University of Paris-Saclay, Paris, France
| | - Robert Benamouzig
- Department of Gastroenterology, Avicenne Hospital, Public Assistance-Hospital of Paris, Bobigny, France
| | - Anne-Marie Davila
- Mixed research unit Nutrition Physiology and Ingestive Behavior, AgroParisTech, French National Institute for Agricultural Research (INRA), University of Paris-Saclay, Paris, France
| | - Sandrine Paule Claus
- Department of Food and Nutritional Sciences, University of Reading, Reading, United Kingdom
| | - Yolanda Sanz
- Microbial Ecology, Nutrition and Health Research Unit, Institute of agronomy and food technology - Spanish National Research Council, Valencia, Spain
| | - François Blachier
- Mixed research unit Nutrition Physiology and Ingestive Behavior, AgroParisTech, French National Institute for Agricultural Research (INRA), University of Paris-Saclay, Paris, France;
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33
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Beaumont M, Jaoui D, Douard V, Mat D, Koeth F, Goustard B, Mayeur C, Mondot S, Hovaghimian A, Le Feunteun S, Chaumontet C, Davila AM, Tomé D, Souchon I, Michon C, Fromentin G, Blachier F, Leclerc M. Structure of protein emulsion in food impacts intestinal microbiota, caecal luminal content composition and distal intestine characteristics in rats. Mol Nutr Food Res 2017; 61. [PMID: 28512779 DOI: 10.1002/mnfr.201700078] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 04/10/2017] [Accepted: 04/25/2017] [Indexed: 12/16/2022]
Abstract
SCOPE Few studies have evaluated in vivo the impact of food structure on digestion, absorption of nutrients and on microbiota composition and metabolism. In this study we evaluated in rat the impact of two structures of protein emulsion in food on gut microbiota, luminal content composition, and intestinal characteristics. METHODS AND RESULTS Rats received for 3 weeks two diets of identical composition but based on lipid-protein matrices of liquid fine (LFE) or gelled coarse (GCE) emulsion. LFE diet led to higher abundance, when compared to the GCE, of Lactobacillaceae (Lactobacillus reuteri) in the ileum, higher β-diversity of the caecum mucus-associated bacteria. In contrast, the LFE diet led to a decrease in Akkermansia municiphila in the caecum. This coincided with heavier caecum content and higher amount of isovalerate in the LFE group. LFE diet induced an increased expression of (i) amino acid transporters in the ileum (ii) glucagon in the caecum, together with an elevated level of GLP-1 in portal plasma. However, these intestinal effects were not associated with modification of food intake or body weight gain. CONCLUSION Overall, the structure of protein emulsion in food affects the expression of amino acid transporters and gut peptides concomitantly with modification of the gut microbiota composition and activity. Our data suggest that these effects of the emulsion structure are the result of a modification of protein digestion properties.
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Affiliation(s)
- Martin Beaumont
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Daphné Jaoui
- MICALIS Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Véronique Douard
- MICALIS Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Damien Mat
- UMR GMPA, AgroParisTech, INRA, Université Paris-Saclay, Thiverval-Grignon, France.,UMR Ingénierie Procédés Aliments, AgroParisTech, INRA, Université Paris-Saclay, Massy, France
| | - Fanny Koeth
- MICALIS Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Bénédicte Goustard
- MICALIS Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Camille Mayeur
- MICALIS Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Stanislas Mondot
- MICALIS Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Anais Hovaghimian
- MICALIS Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Steven Le Feunteun
- UMR GMPA, AgroParisTech, INRA, Université Paris-Saclay, Thiverval-Grignon, France
| | | | - Anne-Marie Davila
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Daniel Tomé
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Isabelle Souchon
- UMR GMPA, AgroParisTech, INRA, Université Paris-Saclay, Thiverval-Grignon, France
| | - Camille Michon
- UMR Ingénierie Procédés Aliments, AgroParisTech, INRA, Université Paris-Saclay, Massy, France
| | - Gilles Fromentin
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - François Blachier
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Marion Leclerc
- MICALIS Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France
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34
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Dietary Protein and Amino Acid Supplementation in Inflammatory Bowel Disease Course: What Impact on the Colonic Mucosa? Nutrients 2017; 9:nu9030310. [PMID: 28335546 PMCID: PMC5372973 DOI: 10.3390/nu9030310] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/13/2017] [Accepted: 03/16/2017] [Indexed: 12/13/2022] Open
Abstract
Inflammatory bowel diseases (IBD), after disease onset, typically progress in two cyclically repeated phases, namely inflammatory flare and remission, with possible nutritional status impairment. Some evidence, either from epidemiological, clinical, and experimental studies indicate that the quantity and the quality of dietary protein consumption and amino acid supplementation may differently influence the IBD course according to the disease phases. For instance, although the dietary protein needs for mucosal healing after an inflammatory episode remain undetermined, there is evidence that amino acids derived from dietary proteins display beneficial effects on this process, serving as building blocks for macromolecule synthesis in the wounded mucosal area, energy substrates, and/or precursors of bioactive metabolites. However, an excessive amount of dietary proteins may result in an increased intestinal production of potentially deleterious bacterial metabolites. This could possibly affect epithelial repair as several of these bacterial metabolites are known to inhibit colonic epithelial cell respiration, cell proliferation, and/or to affect barrier function. In this review, we present the available evidence about the impact of the amount of dietary proteins and supplementary amino acids on IBD onset and progression, with a focus on the effects reported in the colon.
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Andersen V, Hansen AK, Heitmann BL. Potential Impact of Diet on Treatment Effect from Anti-TNF Drugs in Inflammatory Bowel Disease. Nutrients 2017; 9:E286. [PMID: 28294972 PMCID: PMC5372949 DOI: 10.3390/nu9030286] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/08/2017] [Accepted: 03/10/2017] [Indexed: 12/16/2022] Open
Abstract
We wanted to investigate the current knowledge on the impact of diet on anti-TNF response in inflammatory bowel diseases (IBD), to identify dietary factors that warrant further investigations in relation to anti-TNF treatment response, and, finally, to discuss potential strategies for such investigations. PubMed was searched using specified search terms. One small prospective study on diet and anti-TNF treatment in 56 patients with CD found similar remission rates after 56 weeks among 32 patients with good compliance that received concomitant enteral nutrition and 24 with poor compliance that had no dietary restrictions (78% versus 67%, p = 0.51). A meta-analysis of 295 patients found higher odds of achieving clinical remission and remaining in clinical remission among patients on combination therapy with specialised enteral nutrition and Infliximab (IFX) compared with IFX monotherapy (OR 2.73; 95% CI: 1.73-4.31, p < 0.01, OR 2.93; 95% CI: 1.66-5.17, p < 0.01, respectively). In conclusion, evidence-based knowledge on impact of diet on anti-TNF treatment response for clinical use is scarce. Here we propose a mechanism by which Western style diet high in meat and low in fibre may promote colonic inflammation and potentially impact treatment response to anti-TNF drugs. Further studies using hypothesis-driven and data-driven strategies in prospective observational, animal and interventional studies are warranted.
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Affiliation(s)
- Vibeke Andersen
- Focused Research Unit for Molecular Diagnostic and Clinical Research, IRS-Centre Sonderjylland, Hospital of Southern Jutland, Åbenrå 6200, Denmark.
- Institute of Molecular Medicine, University of Southern Denmark, Odense 5000, Denmark.
| | - Axel Kornerup Hansen
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg 1871, Denmark.
| | - Berit Lilienthal Heitmann
- Research Unit for Dietary Studies, Parker Institute, Frederiksberg 2000, Denmark.
- Section for General Medicine, Department of Public Health, University of Copenhagen, Copenhagen 1353, Denmark.
- National Institute of Public Health, University of Southern Denmark, Odense 5000, Denmark.
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36
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Beaumont M, Andriamihaja M, Armand L, Grauso M, Jaffrézic F, Laloë D, Moroldo M, Davila AM, Tomé D, Blachier F, Lan A. Epithelial response to a high-protein diet in rat colon. BMC Genomics 2017; 18:116. [PMID: 28137254 PMCID: PMC5282643 DOI: 10.1186/s12864-017-3514-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 01/25/2017] [Indexed: 01/03/2023] Open
Abstract
Background High-protein diets (HPD) alter the large intestine microbiota composition in association with a metabolic shift towards protein degradation. Some amino acid-derived metabolites produced by the colon bacteria are beneficial for the mucosa while others are deleterious at high concentrations. The aim of the present work was to define the colonic epithelial response to an HPD. Transcriptome profiling was performed on colonocytes of rats fed an HPD or an isocaloric normal-protein diet (NPD) for 2 weeks. Results The HPD downregulated the expression of genes notably implicated in pathways related to cellular metabolism, NF-κB signaling, DNA repair, glutathione metabolism and cellular adhesion in colonocytes. In contrast, the HPD upregulated the expression of genes related to cell proliferation and chemical barrier function. These changes at the mRNA level in colonocytes were not associated with detrimental effects of the HPD on DNA integrity (comet assay), epithelium renewal (quantification of proliferation and apoptosis markers by immunohistochemistry and western blot) and colonic barrier integrity (Ussing chamber experiments). Conclusion The modifications of the luminal environment after an HPD were associated with maintenance of the colonic homeostasis that might be the result of adaptive processes in the epithelium related to the observed transcriptional regulations. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-3514-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Martin Beaumont
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, 75005, Paris, France
| | - Mireille Andriamihaja
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, 75005, Paris, France
| | - Lucie Armand
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, 75005, Paris, France
| | - Marta Grauso
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, 75005, Paris, France
| | - Florence Jaffrézic
- UMR1313 Génétique Animale et Biologie Intégrative, INRA, 78350, Jouy-en-Josas, France
| | - Denis Laloë
- UMR1313 Génétique Animale et Biologie Intégrative, INRA, 78350, Jouy-en-Josas, France
| | | | - Anne-Marie Davila
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, 75005, Paris, France
| | - Daniel Tomé
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, 75005, Paris, France
| | - François Blachier
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, 75005, Paris, France
| | - Annaïg Lan
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, 75005, Paris, France.
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37
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Portune KJ, Beaumont M, Davila AM, Tomé D, Blachier F, Sanz Y. Gut microbiota role in dietary protein metabolism and health-related outcomes: The two sides of the coin. Trends Food Sci Technol 2016. [DOI: 10.1016/j.tifs.2016.08.011] [Citation(s) in RCA: 164] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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38
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Portune KJ, Benítez-Páez A, Del Pulgar EMG, Cerrudo V, Sanz Y. Gut microbiota, diet, and obesity-related disorders-The good, the bad, and the future challenges. Mol Nutr Food Res 2016; 61. [DOI: 10.1002/mnfr.201600252] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 05/25/2016] [Accepted: 05/29/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Kevin J. Portune
- Microbial Ecology, Nutrition and Health Research Unit, Institute of Agrochemistry and Food Technology, Spanish National Research Council, Valencia (IATA-CSIC); C/ Catedràtic Agustín Escardino Benlloch, 7; Valencia Spain
| | - Alfonso Benítez-Páez
- Microbial Ecology, Nutrition and Health Research Unit, Institute of Agrochemistry and Food Technology, Spanish National Research Council, Valencia (IATA-CSIC); C/ Catedràtic Agustín Escardino Benlloch, 7; Valencia Spain
| | - Eva Maria Gomez Del Pulgar
- Microbial Ecology, Nutrition and Health Research Unit, Institute of Agrochemistry and Food Technology, Spanish National Research Council, Valencia (IATA-CSIC); C/ Catedràtic Agustín Escardino Benlloch, 7; Valencia Spain
| | - Victor Cerrudo
- Microbial Ecology, Nutrition and Health Research Unit, Institute of Agrochemistry and Food Technology, Spanish National Research Council, Valencia (IATA-CSIC); C/ Catedràtic Agustín Escardino Benlloch, 7; Valencia Spain
| | - Yolanda Sanz
- Microbial Ecology, Nutrition and Health Research Unit, Institute of Agrochemistry and Food Technology, Spanish National Research Council, Valencia (IATA-CSIC); C/ Catedràtic Agustín Escardino Benlloch, 7; Valencia Spain
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Zhou L, Fang L, Sun Y, Su Y, Zhu W. Effects of a diet high in resistant starch on fermentation end-products of protein and mucin secretion in the colons of pigs. STARCH-STARKE 2016. [DOI: 10.1002/star.201600032] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Liping Zhou
- Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology; Nanjing Agricultural University; Nanjing P.R. China
| | - Lingdong Fang
- Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology; Nanjing Agricultural University; Nanjing P.R. China
| | - Yue Sun
- Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology; Nanjing Agricultural University; Nanjing P.R. China
| | - Yong Su
- Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology; Nanjing Agricultural University; Nanjing P.R. China
| | - Weiyun Zhu
- Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology; Nanjing Agricultural University; Nanjing P.R. China
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Verspreet J, Damen B, Broekaert WF, Verbeke K, Delcour JA, Courtin CM. A Critical Look at Prebiotics Within the Dietary Fiber Concept. Annu Rev Food Sci Technol 2016; 7:167-90. [PMID: 26735801 DOI: 10.1146/annurev-food-081315-032749] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This article reviews the current knowledge of the health effects of dietary fiber and prebiotics and establishes the position of prebiotics within the broader context of dietary fiber. Although the positive health effects of specific fibers on defecation, reduction of postprandial glycemic response, and maintenance of normal blood cholesterol levels are generally accepted, other presumed health benefits of dietary fibers are still debated. There is evidence that specific dietary fibers improve the integrity of the epithelial layer of the intestines, increase the resistance against pathogenic colonization, reduce the risk of developing colorectal cancer, increase mineral absorption, and have a positive impact on the immune system, but these effects are neither generally acknowledged nor completely understood. Many of the latter effects are thought to be particularly elicited by prebiotics. Although the prebiotic concept evolved significantly during the past two decades, the line between prebiotics and nonprebiotic dietary fiber remains vague. Nevertheless, scientific evidence demonstrating the health-promoting potential of prebiotics continues to accumulate and suggests that prebiotic fibers have their rightful place in a healthy diet.
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Affiliation(s)
- Joran Verspreet
- Laboratory of Food Chemistry and Biochemistry.,Leuven Food Science and Nutrition Research Center (LFoRCe).,Department of Microbial and Molecular Systems (M2S), KU Leuven, and
| | - Bram Damen
- Laboratory of Food Chemistry and Biochemistry.,Leuven Food Science and Nutrition Research Center (LFoRCe).,Department of Microbial and Molecular Systems (M2S), KU Leuven, and
| | | | - Kristin Verbeke
- Leuven Food Science and Nutrition Research Center (LFoRCe).,Translational Research in Gastrointestinal Disorders (TARGID), KU Leuven, 3001 Leuven, Belgium;
| | - Jan A Delcour
- Laboratory of Food Chemistry and Biochemistry.,Leuven Food Science and Nutrition Research Center (LFoRCe).,Department of Microbial and Molecular Systems (M2S), KU Leuven, and
| | - Christophe M Courtin
- Laboratory of Food Chemistry and Biochemistry.,Leuven Food Science and Nutrition Research Center (LFoRCe).,Department of Microbial and Molecular Systems (M2S), KU Leuven, and
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Association between the gut microbiota and diet: Fetal life, early childhood, and further life. Nutrition 2015; 32:620-7. [PMID: 26946974 DOI: 10.1016/j.nut.2015.12.037] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 11/22/2015] [Accepted: 12/25/2015] [Indexed: 12/22/2022]
Abstract
Gut microbiota establishment and further microbiota shifts are very important for maintaining host health throughout life. There are some factors, including genetics, the mother's health and diet, delivery mode, breast or formula feeding, that may influence the gut microbiota. By the end of approximately the first 3 y of life, the gut microbiota becomes an adult-like stable system. Once established, 60 to 70% of the microbiota composition remains stable throughout life, but 30 to 40% can be altered by changes in the diet and other factors such as physical activity, lifestyle, bacterial infections, and antibiotic or surgical treatment. Diet-related factors that influence the gut microbiota in people of all ages are of great interest. Nutrition may have therapeutic success in gut microbiota correction. This review describes current evidence concerning the links between gut microbiota composition and dietary patterns throughout life.
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Production of butyrate from lysine and the Amadori product fructoselysine by a human gut commensal. Nat Commun 2015; 6:10062. [PMID: 26620920 PMCID: PMC4697335 DOI: 10.1038/ncomms10062] [Citation(s) in RCA: 159] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 10/29/2015] [Indexed: 12/18/2022] Open
Abstract
Human intestinal bacteria produce butyrate, which has signalling properties and can be used as energy source by enterocytes thus influencing colonic health. However, the pathways and the identity of bacteria involved in this process remain unclear. Here we describe the isolation from the human intestine of Intestinimonas strain AF211, a bacterium that can convert lysine stoichiometrically into butyrate and acetate when grown in a synthetic medium. Intestinimonas AF211 also converts the Amadori product fructoselysine, which is abundantly formed in heated foods via the Maillard reaction, into butyrate. The butyrogenic pathway includes a specific CoA transferase that is overproduced during growth on lysine. Bacteria related to Intestinimonas AF211 as well as the genetic coding capacity for fructoselysine conversion are abundantly present in colonic samples from some healthy human subjects. Our results indicate that protein can serve as a source of butyrate in the human colon, and its conversion by Intestinimonas AF211 and related butyrogens may protect the host from the undesired side effects of Amadori reaction products. Bacterial production of butyrate in the gut is associated with a healthy colon. Here the authors isolate an Intestinimonas strain from the human gut that can produce butyrate from lysine and fructoselysine, a potentially harmful compound formed in heated foods.
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Poesen R, Mutsaers HAM, Windey K, van den Broek PH, Verweij V, Augustijns P, Kuypers D, Jansen J, Evenepoel P, Verbeke K, Meijers B, Masereeuw R. The Influence of Dietary Protein Intake on Mammalian Tryptophan and Phenolic Metabolites. PLoS One 2015; 10:e0140820. [PMID: 26469515 PMCID: PMC4607412 DOI: 10.1371/journal.pone.0140820] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 09/29/2015] [Indexed: 01/26/2023] Open
Abstract
Although there has been increasing interest in the use of high protein diets, little is known about dietary protein related changes in the mammalian metabolome. We investigated the influence of protein intake on selected tryptophan and phenolic compounds, derived from both endogenous and colonic microbial metabolism. Furthermore, potential inter-species metabolic differences were studied. For this purpose, 29 healthy subjects were allocated to a high (n = 14) or low protein diet (n = 15) for 2 weeks. In addition, 20 wild-type FVB mice were randomized to a high protein or control diet for 21 days. Plasma and urine samples were analyzed with liquid chromatography–mass spectrometry for measurement of tryptophan and phenolic metabolites. In human subjects, we observed significant changes in plasma level and urinary excretion of indoxyl sulfate (P 0.004 and P 0.001), and in urinary excretion of indoxyl glucuronide (P 0.01), kynurenic acid (P 0.006) and quinolinic acid (P 0.02). In mice, significant differences were noted in plasma tryptophan (P 0.03), indole-3-acetic acid (P 0.02), p-cresyl glucuronide (P 0.03), phenyl sulfate (P 0.004) and phenylacetic acid (P 0.01). Thus, dietary protein intake affects plasma levels and generation of various mammalian metabolites, suggesting an influence on both endogenous and colonic microbial metabolism. Metabolite changes are dissimilar between human subjects and mice, pointing to inter-species metabolic differences with respect to protein intake.
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Affiliation(s)
- Ruben Poesen
- Department of Microbiology and Immunology, Division of Nephrology, University Hospitals Leuven, Leuven, Belgium
| | - Henricus A. M. Mutsaers
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Physiology and Pediatrics, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands
| | - Karen Windey
- Translational Research for Gastrointestinal Disorders (Targid) and Leuven Food Science and Nutrition Research Centre (LFoRCe), University of Leuven, Leuven, Belgium
| | - Petra H. van den Broek
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Vivienne Verweij
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Patrick Augustijns
- Department of Pharmaceutical and Pharmacological Sciences, Drug Delivery and Disposition, University of Leuven, Leuven, Belgium
| | - Dirk Kuypers
- Department of Microbiology and Immunology, Division of Nephrology, University Hospitals Leuven, Leuven, Belgium
| | - Jitske Jansen
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Physiology and Pediatrics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Pieter Evenepoel
- Department of Microbiology and Immunology, Division of Nephrology, University Hospitals Leuven, Leuven, Belgium
| | - Kristin Verbeke
- Translational Research for Gastrointestinal Disorders (Targid) and Leuven Food Science and Nutrition Research Centre (LFoRCe), University of Leuven, Leuven, Belgium
| | - Björn Meijers
- Department of Microbiology and Immunology, Division of Nephrology, University Hospitals Leuven, Leuven, Belgium
| | - Rosalinde Masereeuw
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht, The Netherlands
- * E-mail:
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Contribution of Colonic Fermentation and Fecal Water Toxicity to the Pathophysiology of Lactose-Intolerance. Nutrients 2015; 7:7505-22. [PMID: 26371036 PMCID: PMC4586544 DOI: 10.3390/nu7095349] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 08/13/2015] [Accepted: 08/21/2015] [Indexed: 02/07/2023] Open
Abstract
Whether or not abdominal symptoms occur in subjects with small intestinal lactose malabsorption might depend on differences in colonic fermentation. To evaluate this hypothesis, we collected fecal samples from subjects with lactose malabsorption with abdominal complaints (LM-IT, n = 11) and without abdominal complaints (LM-T, n = 8) and subjects with normal lactose digestion (NLD, n = 15). Lactose malabsorption was diagnosed using a 13C-lactose breath test. Colonic fermentation was characterized in fecal samples at baseline and after incubation with lactose for 3 h, 6 h and 24 h through a metabolomics approach using gas chromatography-mass spectrometry (GC-MS). Fecal water cytotoxicity was analyzed using a colorimetric assay. Fecal water cytotoxicity was not different between the three groups (Kruskall-Wallis p = 0.164). Cluster analysis of the metabolite patterns revealed separate clusters for NLD, LM-T and LM-IT samples at baseline and after 24 h incubation with lactose. Levels of 5-methyl-2-furancarboxaldehyde were significantly higher in LM-IT and LM-T compared to NLD whereas those of an unidentified aldehyde were significantly higher in LM-IT compared to LM-T and NLD. Incubation with lactose increased short chain fatty acid (SCFA) concentrations more in LM-IT and LM-T compared to NLD. In conclusion, fermentation patterns were clearly different in NLD, LM-IT and LM-T, but not related to differences in fecal water cytotoxicity.
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Verbeke KA, Boobis AR, Chiodini A, Edwards CA, Franck A, Kleerebezem M, Nauta A, Raes J, van Tol EAF, Tuohy KM. Towards microbial fermentation metabolites as markers for health benefits of prebiotics. Nutr Res Rev 2015; 28:42-66. [PMID: 26156216 PMCID: PMC4501371 DOI: 10.1017/s0954422415000037] [Citation(s) in RCA: 203] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Available evidence on the bioactive, nutritional and putative detrimental properties of gut microbial metabolites has been evaluated to support a more integrated view of how prebiotics might affect host health throughout life. The present literature inventory targeted evidence for the physiological and nutritional effects of metabolites, for example, SCFA, the potential toxicity of other metabolites and attempted to determine normal concentration ranges. Furthermore, the biological relevance of more holistic approaches like faecal water toxicity assays and metabolomics and the limitations of faecal measurements were addressed. Existing literature indicates that protein fermentation metabolites (phenol, p-cresol, indole, ammonia), typically considered as potentially harmful, occur at concentration ranges in the colon such that no toxic effects are expected either locally or following systemic absorption. The endproducts of saccharolytic fermentation, SCFA, may have effects on colonic health, host physiology, immunity, lipid and protein metabolism and appetite control. However, measuring SCFA concentrations in faeces is insufficient to assess the dynamic processes of their nutrikinetics. Existing literature on the usefulness of faecal water toxicity measures as indicators of cancer risk seems limited. In conclusion, at present there is insufficient evidence to use changes in faecal bacterial metabolite concentrations as markers of prebiotic effectiveness. Integration of results from metabolomics and metagenomics holds promise for understanding the health implications of prebiotic microbiome modulation but adequate tools for data integration and interpretation are currently lacking. Similarly, studies measuring metabolite fluxes in different body compartments to provide a more accurate picture of their nutrikinetics are needed.
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Affiliation(s)
- Kristin A. Verbeke
- Translational Research in Gastrointestinal Disorders (TARGID), KU Leuven and Leuven Food Science and Nutrition Research Center (LFoRCe), Leuven, Belgium
| | - Alan R. Boobis
- Department of Medicine, Imperial College London, London, UK
| | - Alessandro Chiodini
- Formerly ILSI Europe, Box 6, Avenue Emmanuel Mounier 83, BE-1200, Brussels, Belgium; now European Commission, Research Executive Agency (REA) Unit B2, Brussels, Belgium
| | - Christine A. Edwards
- Human Nutrition School of Medicine, College of MVLS, University of Glasgow, Glasgow, Scotland
| | | | - Michiel Kleerebezem
- Host Microbe Interactomics, Wageningen University, Wageningen, The Netherlands
| | - Arjen Nauta
- FrieslandCampina, Amersfoort, The Netherlands
| | - Jeroen Raes
- Microbiology and Immunology, Rega Institute, KU Leuven, Leuven; VIB, Leuven; DBIT, Vrije Universiteit Brussel, Brussels, Belgium
| | | | - Kieran M. Tuohy
- Nutrition and Nutrigenomics, Research and Innovation Centre-Fondazione Edmund Mach, Trento, Italy
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Carding S, Verbeke K, Vipond DT, Corfe BM, Owen LJ. Dysbiosis of the gut microbiota in disease. MICROBIAL ECOLOGY IN HEALTH AND DISEASE 2015; 26:26191. [PMID: 25651997 PMCID: PMC4315779 DOI: 10.3402/mehd.v26.26191] [Citation(s) in RCA: 714] [Impact Index Per Article: 79.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
There is growing evidence that dysbiosis of the gut microbiota is associated with the pathogenesis of both intestinal and extra-intestinal disorders. Intestinal disorders include inflammatory bowel disease, irritable bowel syndrome (IBS), and coeliac disease, while extra-intestinal disorders include allergy, asthma, metabolic syndrome, cardiovascular disease, and obesity. In many of these conditions, the mechanisms leading to disease development involves the pivotal mutualistic relationship between the colonic microbiota, their metabolic products, and the host immune system. The establishment of a ‘healthy’ relationship early in life appears to be critical to maintaining intestinal homeostasis. Whilst we do not yet have a clear understanding of what constitutes a ‘healthy’ colonic microbiota, a picture is emerging from many recent studies identifying particular bacterial species associated with a healthy microbiota. In particular, the bacterial species residing within the mucus layer of the colon, either through direct contact with host cells, or through indirect communication via bacterial metabolites, may influence whether host cellular homeostasis is maintained or whether inflammatory mechanisms are triggered. In addition to inflammation, there is some evidence that perturbations in the gut microbiota is involved with the development of colorectal cancer. In this case, dysbiosis may not be the most important factor, rather the products of interaction between diet and the microbiome. High-protein diets are thought to result in the production of carcinogenic metabolites from the colonic microbiota that may result in the induction of neoplasia in the colonic epithelium. Ever more sensitive metabolomics methodologies reveal a suite of small molecules produced in the microbiome which mimic or act as neurosignallers or neurotransmitters. Coupled with evidence that probiotic interventions may alter psychological endpoints in both humans and in rodent models, these data suggest that CNS-related co-morbidities frequently associated with GI disease may originate in the intestine as a result of microbial dysbiosis. This review outlines the current evidence showing the extent to which the gut microbiota contributes to the development of disease. Based on evidence to date, we can assess the potential to positively modulate the composition of the colonic microbiota and ameliorate disease activity through bacterial intervention.
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Affiliation(s)
- Simon Carding
- Institute of Food Research, Norwich, UK.,Norwich Medical School, University of East Anglia, Norwich, UK
| | - Kristin Verbeke
- Translational Research in GastroIntestinal Disorders, KU Leuven, Leuven, Belgium
| | - Daniel T Vipond
- Institute of Food Research, Norwich, UK.,Norwich Medical School, University of East Anglia, Norwich, UK
| | - Bernard M Corfe
- Molecular Gastroenterology Research Group, Department of Oncology, University of Sheffield, Sheffield, UK.,Insigneo Institute for in silico Medicine, University of Sheffield, Sheffield, UK;
| | - Lauren J Owen
- Human Nutrition Unit, Department of Oncology, University of Sheffield, Sheffield, UK
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Carding S, Verbeke K, Vipond DT, Corfe BM, Owen LJ. Dysbiosis of the gut microbiota in disease. MICROBIAL ECOLOGY IN HEALTH AND DISEASE 2015. [PMID: 25651997 DOI: 10.3402/mehd.v3426.26191] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
There is growing evidence that dysbiosis of the gut microbiota is associated with the pathogenesis of both intestinal and extra-intestinal disorders. Intestinal disorders include inflammatory bowel disease, irritable bowel syndrome (IBS), and coeliac disease, while extra-intestinal disorders include allergy, asthma, metabolic syndrome, cardiovascular disease, and obesity.
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Affiliation(s)
- Simon Carding
- Institute of Food Research, Norwich, UK
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - Kristin Verbeke
- Translational Research in GastroIntestinal Disorders, KU Leuven, Leuven, Belgium
| | - Daniel T Vipond
- Institute of Food Research, Norwich, UK
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - Bernard M Corfe
- Molecular Gastroenterology Research Group, Department of Oncology, University of Sheffield, Sheffield, UK
- Insigneo Institute for in silico Medicine, University of Sheffield, Sheffield, UK;
| | - Lauren J Owen
- Human Nutrition Unit, Department of Oncology, University of Sheffield, Sheffield, UK
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Conlon MA, Bird AR. The impact of diet and lifestyle on gut microbiota and human health. Nutrients 2014; 7:17-44. [PMID: 25545101 PMCID: PMC4303825 DOI: 10.3390/nu7010017] [Citation(s) in RCA: 863] [Impact Index Per Article: 86.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 12/09/2014] [Indexed: 02/07/2023] Open
Abstract
There is growing recognition of the role of diet and other environmental factors in modulating the composition and metabolic activity of the human gut microbiota, which in turn can impact health. This narrative review explores the relevant contemporary scientific literature to provide a general perspective of this broad area. Molecular technologies have greatly advanced our understanding of the complexity and diversity of the gut microbial communities within and between individuals. Diet, particularly macronutrients, has a major role in shaping the composition and activity of these complex populations. Despite the body of knowledge that exists on the effects of carbohydrates there are still many unanswered questions. The impacts of dietary fats and protein on the gut microbiota are less well defined. Both short- and long-term dietary change can influence the microbial profiles, and infant nutrition may have life-long consequences through microbial modulation of the immune system. The impact of environmental factors, including aspects of lifestyle, on the microbiota is particularly poorly understood but some of these factors are described. We also discuss the use and potential benefits of prebiotics and probiotics to modify microbial populations. A description of some areas that should be addressed in future research is also presented.
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Affiliation(s)
- Michael A Conlon
- CSIRO Food and Nutrition Flagship, Kintore Ave, Adelaide, SA 5000, Australia.
| | - Anthony R Bird
- CSIRO Food and Nutrition Flagship, Kintore Ave, Adelaide, SA 5000, Australia.
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Wheat bran extract alters colonic fermentation and microbial composition, but does not affect faecal water toxicity: a randomised controlled trial in healthy subjects. Br J Nutr 2014; 113:225-38. [PMID: 25498469 DOI: 10.1017/s0007114514003523] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Wheat bran extract (WBE), containing arabinoxylan-oligosaccharides that are potential prebiotic substrates, has been shown to modify bacterial colonic fermentation in human subjects and to beneficially affect the development of colorectal cancer (CRC) in rats. However, it is unclear whether these changes in fermentation are able to reduce the risk of developing CRC in humans. The aim of the present study was to evaluate the effects of WBE on the markers of CRC risk in healthy volunteers, and to correlate these effects with colonic fermentation. A total of twenty healthy subjects were enrolled in a double-blind, cross-over, randomised, controlled trial in which the subjects ingested WBE (10 g/d) or placebo (maltodextrin, 10 g/d) for 3 weeks, separated by a 3-week washout period. At the end of each study period, colonic handling of NH3 was evaluated using the biomarker lactose[15N, 15N']ureide, colonic fermentation was characterised through a metabolomics approach, and the predominant microbial composition was analysed using denaturing gradient gel electrophoresis. As markers of CRC risk, faecal water genotoxicity was determined using the comet assay and faecal water cytotoxicity using a colorimetric cell viability assay. Intake of WBE induced a shift from urinary to faecal 15N excretion, indicating a stimulation of colonic bacterial activity and/or growth. Microbial analysis revealed a selective stimulation of Bifidobacterium adolescentis. In addition, WBE altered the colonic fermentation pattern and significantly reduced colonic protein fermentation compared with the run-in period. However, faecal water cytotoxicity and genotoxicity were not affected. Although intake of WBE clearly affected colonic fermentation and changed the composition of the microbiota, these changes were not associated with the changes in the markers of CRC risk.
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50
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Windey K, François I, Broekaert W, De Preter V, Delcour JA, Louat T, Herman J, Verbeke K. High dose of prebiotics reduces fecal water cytotoxicity in healthy subjects. Mol Nutr Food Res 2014; 58:2206-18. [PMID: 25164793 DOI: 10.1002/mnfr.201400298] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 07/18/2014] [Accepted: 08/06/2014] [Indexed: 12/20/2022]
Abstract
SCOPE In vitro and animal studies have shown differential colonic fermentation of structurally different prebiotics. We evaluated the impact of two structurally different prebiotics (wheat bran extract (WBE, containing arabinoxylan-oligosaccharides) and oligofructose) on colonic fermentation and markers of bowel health in healthy volunteers. METHODS AND RESULTS Nineteen healthy subjects completed a double-blind, cross-over randomized controlled trial. Interventions with WBE, oligofructose or placebo for 2 wk (week 1: 15 g/day; week 2: 30 g/day) were separated by 2-wk wash-out periods. At the end of each study period, colonic fermentation was characterized through a metabolomics approach. Fecal water genotoxicity and cytotoxicity were determined using the comet and WST-1 assay, respectively, as parameters of gut health. Cluster analysis revealed differences in effects of WBE and oligofructose on colonic fermentation. WBE, but not oligofructose, reduced fecal p-cresol (p = 0.009) and isovaleric acid concentrations (p = 0.022), markers of protein fermentation. Fecal water cytotoxicity was significantly lower after intake of WBE (p = 0.015). Both WBE- and oligofructose-intake tended to reduce fecal water genotoxicity compared to placebo (WBE: p = 0.060; oligofructose: p = 0.057). Changes in fermentation were not related to changes in fecal water toxicity. CONCLUSION Structurally different prebiotics affect colonic fermentation and gut health in a different way.
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Affiliation(s)
- Karen Windey
- Translational Research Center for Gastrointestinal Disorders (TARGID), KULeuven, Leuven, Belgium; Leuven Food Science and Nutrition Research Centre (LFoRCe), KULeuven, Leuven, Belgium
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