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Kong H, Xu T, Wang S, Zhang Z, Li M, Qu S, Li Q, Gao P, Cong Z. The molecular mechanism of polysaccharides in combating major depressive disorder: A comprehensive review. Int J Biol Macromol 2024; 259:129067. [PMID: 38163510 DOI: 10.1016/j.ijbiomac.2023.129067] [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: 05/17/2023] [Revised: 12/10/2023] [Accepted: 12/25/2023] [Indexed: 01/03/2024]
Abstract
Major depressive disorder (MDD) is a complex psychiatric condition with diverse etiological factors. Typical pathological features include decreased cerebral cortex, subcortical structures, and grey matter volumes, as well as monoamine transmitter dysregulation. Although medications exist to treat MDD, unmet needs persist due to limited efficacy, induced side effects, and relapse upon drug withdrawal. Polysaccharides offer promising new therapies for MDD, demonstrating antidepressant effects with minimal side effects and multiple targets. These include neurotransmitter, neurotrophin, neuroinflammation, hypothalamic-pituitary-adrenal axis, mitochondrial function, oxidative stress, and intestinal flora regulation. This review explores the latest advancements in understanding the pharmacological actions and mechanisms of polysaccharides in treating major depression. We discuss the impact of polysaccharides' diverse structures and properties on their pharmacological actions, aiming to inspire new research directions and facilitate the discovery of novel anti-depressive drugs.
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Affiliation(s)
- Hongwei Kong
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Tianren Xu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Shengguang Wang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Zhiyuan Zhang
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Min Li
- Institute of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Suyan Qu
- Tai 'an Taishan District People's Hospital, China
| | - Qinqing Li
- Shanxi University of Chinese Medicine, China
| | - Peng Gao
- Institute of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China.
| | - Zhufeng Cong
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; Affiliated Cancer Hospital of Shandong First Medical University, China.
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2
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The impact of psyllium gelation behaviour on in vitro colonic fermentation properties. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2023.108543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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3
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Tian T, Rumachik N, Sinrod AJG, Barile D, Liu Y. Coupling an ion chromatography to high resolution mass spectrometry (IC-MS) for the discovery of potentially prebiotic oligosaccharides in Chardonnay grape marc. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1214:123540. [PMID: 36462400 DOI: 10.1016/j.jchromb.2022.123540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 11/17/2022] [Accepted: 11/19/2022] [Indexed: 11/25/2022]
Abstract
Oligosaccharides are carbohydrates made of three to twenty monosaccharide units linked through glycosidic bonds. Emerging research into the potential prebiotic activity of oligosaccharides is creating opportunities to use industrial byproducts as value-added products. Grape marc is a residue left after winemaking and has been shown to provide health benefits to humans. In this study, we analyzed the oligosaccharides in Chardonnay grape marc by utilizing a hyphenated platform in which an ion chromatography (IC) system is coupled to an Orbitrap mass spectrometer (MS). With this platform, we obtained a structural library including 32 oligosaccharides with unique compositions of monosaccharides and 61 oligosaccharide structures. Notably, the ion chromatographic separation provided resolution of charged isomers while maintaining separation capacity for small, neutral oligosaccharides. High-quality tandem MS also facilitated the identification of oligosaccharides with structural modifications including methylation and the presence of sugar alditols and hexuronic acids. The data acquired by the IC-MS system were also compared with previously published LC-MS data. We found that these two platforms are largely complementary and, in combination, provide a more comprehensive characterization of oligosaccharides than either platform achieves alone.
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Affiliation(s)
- Tian Tian
- Thermo Fisher Scientific, 1228 Titan Way, Sunnyvale, CA 94086, United States; Amgen Research, Molecular Analytics, Biologics Therapeutic Discovery, 750 Gateway Blvd, South San Francisco, CA 94080, United States(1).
| | - Neil Rumachik
- Thermo Fisher Scientific, 1228 Titan Way, Sunnyvale, CA 94086, United States.
| | - Amanda J G Sinrod
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States; Mattson, 343 Hatch Dr, Foster City, CA 94404, United States(1).
| | - Daniela Barile
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States.
| | - Yan Liu
- Thermo Fisher Scientific, 1228 Titan Way, Sunnyvale, CA 94086, United States.
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4
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Isomelezitose Overproduction by Alginate-Entrapped Recombinant E. coli Cells and In Vitro Evaluation of Its Potential Prebiotic Effect. Int J Mol Sci 2022; 23:ijms232012682. [PMID: 36293535 PMCID: PMC9604484 DOI: 10.3390/ijms232012682] [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: 09/20/2022] [Revised: 10/11/2022] [Accepted: 10/18/2022] [Indexed: 11/04/2022] Open
Abstract
In this work, the trisaccharide isomelezitose was overproduced from sucrose using a biocatalyst based on immobilized Escherichia coli cells harbouring the α-glucosidase from the yeast Metschnikowia reukaufii, the best native producer of this sugar described to date. The overall process for isomelezitose production and purification was performed in three simple steps: (i) oligosaccharides synthesis by alginate-entrapped E. coli; (ii) elimination of monosaccharides (glucose and fructose) using alginate-entrapped Komagataella phaffii cells; and (iii) semi-preparative high performance liquid chromatography under isocratic conditions. As result, approximately 2.15 g of isomelezitose (purity exceeding 95%) was obtained from 15 g of sucrose. The potential prebiotic effect of this sugar on probiotic bacteria (Lactobacillus casei, Lactobacillus rhamnosus and Enterococcus faecium) was analysed using in vitro assays for the first time. The growth of all probiotic bacteria cultures supplemented with isomelezitose was significantly improved and was similar to that of cultures supplemented with a commercial mixture of fructo-oligosaccharides. In addition, when isomelezitose was added to the bacteria cultures, the production of organic acids (mainly butyrate) was significantly promoted. Therefore, these results confirm that isomelezitose is a potential novel prebiotic that could be included in healthier foodstuffs designed for human gastrointestinal balance maintenance.
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5
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Zhantlessova S, Savitskaya I, Kistaubayeva A, Ignatova L, Talipova A, Pogrebnjak A, Digel I. Advanced "Green" Prebiotic Composite of Bacterial Cellulose/Pullulan Based on Synthetic Biology-Powered Microbial Coculture Strategy. Polymers (Basel) 2022; 14:3224. [PMID: 35956737 PMCID: PMC9371109 DOI: 10.3390/polym14153224] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/02/2022] [Accepted: 08/02/2022] [Indexed: 01/29/2023] Open
Abstract
Bacterial cellulose (BC) is a biopolymer produced by different microorganisms, but in biotechnological practice, Komagataeibacter xylinus is used. The micro- and nanofibrillar structure of BC, which forms many different-sized pores, creates prerequisites for the introduction of other polymers into it, including those synthesized by other microorganisms. The study aims to develop a cocultivation system of BC and prebiotic producers to obtain BC-based composite material with prebiotic activity. In this study, pullulan (PUL) was found to stimulate the growth of the probiotic strain Lactobacillus rhamnosus GG better than the other microbial polysaccharides gellan and xanthan. BC/PUL biocomposite with prebiotic properties was obtained by cocultivation of Komagataeibacter xylinus and Aureobasidium pullulans, BC and PUL producers respectively, on molasses medium. The inclusion of PUL in BC is proved gravimetrically by scanning electron microscopy and by Fourier transformed infrared spectroscopy. Cocultivation demonstrated a composite effect on the aggregation and binding of BC fibers, which led to a significant improvement in mechanical properties. The developed approach for "grafting" of prebiotic activity on BC allows preparation of environmentally friendly composites of better quality.
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Affiliation(s)
- Sirina Zhantlessova
- Department of Biotechnology, Al-Farabi Kazakh National University, 71 Al-Farabi Avenue, Almaty 050040, Kazakhstan
| | - Irina Savitskaya
- Department of Biotechnology, Al-Farabi Kazakh National University, 71 Al-Farabi Avenue, Almaty 050040, Kazakhstan
| | - Aida Kistaubayeva
- Department of Biotechnology, Al-Farabi Kazakh National University, 71 Al-Farabi Avenue, Almaty 050040, Kazakhstan
| | - Ludmila Ignatova
- Department of Biotechnology, Al-Farabi Kazakh National University, 71 Al-Farabi Avenue, Almaty 050040, Kazakhstan
| | - Aizhan Talipova
- Department of Biotechnology, Al-Farabi Kazakh National University, 71 Al-Farabi Avenue, Almaty 050040, Kazakhstan
| | - Alexander Pogrebnjak
- Department of Nanoelectronics and Surface Modification, Sumy State University, Ryms’koho-Korsakova St. 2, 40000 Sumy, Ukraine
| | - Ilya Digel
- Institute for Bioengineering, Aachen University of Applied Sciences, Heinrich-Mußmann-Straße 1, 52428 Jülich, Germany
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6
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Parkar SG, Frost JKT, Rosendale D, Stoklosinski HM, Jobsis CMH, Hedderley DI, Gopal P. The sugar composition of the fibre in selected plant foods modulates weaning infants' gut microbiome composition and fermentation metabolites in vitro. Sci Rep 2021; 11:9292. [PMID: 33927231 PMCID: PMC8085221 DOI: 10.1038/s41598-021-88445-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 04/12/2021] [Indexed: 12/11/2022] Open
Abstract
Eight plant-based foods: oat flour and pureed apple, blackcurrant, carrot, gold- and green-fleshed kiwifruit, pumpkin, sweetcorn, were pre-digested and fermented with pooled inocula of weaning infants’ faecal bacteria in an in vitro hindgut model. Inulin and water were included as controls. The pre-digested foods were analysed for digestion-resistant fibre-derived sugar composition and standardised to the same total fibre concentration prior to fermentation. The food-microbiome interactions were then characterised by measuring microbial acid and gas metabolites, microbial glycosidase activity and determining microbiome structure. At the physiologically relevant time of 10 h of fermentation, the xyloglucan-rich apple and blackcurrant favoured a propiogenic metabolic and microbiome profile with no measurable gas production. Glucose-rich, xyloglucan-poor pumpkin caused the greatest increases in lactate and acetate (indicative of high fermentability) commensurate with increased bifidobacteria. Glucose-rich, xyloglucan-poor oats and sweetcorn, and arabinogalactan-rich carrot also increased lactate and acetate, and were more stimulatory of clostridial families, which are indicative of increased microbial diversity and gut and immune health. Inulin favoured a probiotic-driven consortium, while water supported a proteolytic microbiome. This study shows that the fibre-derived sugar composition of complementary foods may shape infant gut microbiome structure and metabolic activity, at least in vitro.
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Affiliation(s)
- Shanthi G Parkar
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand.
| | - Jovyn K T Frost
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Doug Rosendale
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Halina M Stoklosinski
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Carel M H Jobsis
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Duncan I Hedderley
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Pramod Gopal
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand. .,Riddet Institute, Massey University, Palmerston North, 4442, New Zealand.
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7
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Harris HC, Morrison DJ, Edwards CA. Impact of the source of fermentable carbohydrate on SCFA production by human gut microbiota in vitro - a systematic scoping review and secondary analysis. Crit Rev Food Sci Nutr 2020; 61:3892-3903. [PMID: 32865002 DOI: 10.1080/10408398.2020.1809991] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Short chain fatty acids (SCFA) are produced by bacterial fermentation of non-digestible carbohydrates (NDC) and have many potential tissue and SCFA specific actions, from providing fuel for colonic cells to appetite regulation. Many studies have described the fermentation of different carbohydrates, often using in vitro batch culture. As evidence-based critical evaluation of substrates selectively promoting production of individual SCFA is lacking, we performed a systematic scoping literature review. Databases were searched to identify relevant papers published between 1900 and 12/06/2016. Search terms included In vitro batch fermentation and In vitro short chain fatty acid production. Articles were considered for essential criteria allowing equivalent comparison of SCFA between NDC. Seventy seven articles were included in the final analysis examining 29 different carbohydrates. After 24-hour fermentation, galacto-oligosaccharide ranked highest for butyrate and total SCFA production and second for acetate production. Rhamnose ranked highest for propionate production. The lowest SCFA production was observed for kiwi fiber, polydextrose, and cellulose. This review demonstrates that choosing a substrate to selectively enhance a specific SCFA is difficult, and the molar proportion of each SCFA produced by individual substrates may be misleading. Instead the rate and ratio of SCFA production should be evaluated in parallel.
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Affiliation(s)
- Hannah C Harris
- Human Nutrition, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.,Scottish Universities Environmental Research Centre, University of Glasgow, Glasgow, UK
| | - Douglas J Morrison
- Scottish Universities Environmental Research Centre, University of Glasgow, Glasgow, UK
| | - Christine A Edwards
- Human Nutrition, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
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8
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Yu L, Duan H, Kellingray L, Cen S, Tian F, Zhao J, Zhang H, Gall GL, Mayer MJ, Zhai Q, Chen W, Narbad A. Lactobacillus plantarum-Mediated Regulation of Dietary Aluminum Induces Changes in the Human Gut Microbiota: an In Vitro Colonic Fermentation Study. Probiotics Antimicrob Proteins 2020; 13:398-412. [PMID: 32712897 DOI: 10.1007/s12602-020-09677-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The gut microbiota has been identified as a target of toxic metals and a potentially crucial mediator of the bioavailability and toxicity of these metals. In this study, we show that aluminum (Al) exposure, even at low dose, affected the growth of representative strains from the human intestine via pure culture experiments. In vitro, Lactobacillus plantarum CCFM639 could bind Al on its cell surface as shown by electron microscopy and energy dispersive X-ray analysis. The potential of L. plantarum CCFM639 to reverse changes in human intestine microbiota induced by low-dose dietary Al exposure was investigated using an in vitro colonic fermentation model. Batch fermenters were inoculated with fresh stool samples from healthy adult donors and supplemented with 86 mg/L Al and/or 109 CFU of L. plantarum CCFM639. Al exposure significantly increased the relative abundances of Bacteroidetes (Prevotella), Proteobacteria (Escherichia), Actinobacteria (Collinsella), Euryarchaeota (Methanobrevibacter), and Verrucomicrobiaceae and decreased Firmicutes (Streptococcus, Roseburia, Ruminococcus, Dialister, Coprobacillus). Some changes were reversed by the inclusion of L. plantarum CCFM639. Alterations in gut microbiota induced by Al and L. plantarum CCFM639 inevitably led to changes in metabolite levels. The short-chain fatty acid (SCFAs) contents were reduced after Al exposure, but L. plantarum CCFM639 could elevate their levels. SCFAs had positive correlations with beneficial bacteria, such as Dialister, Streptococcus, Roseburia, and negative correlations with Erwinia, Escherichia, and Serratia. Therefore, dietary Al exposure altered the composition and structure of the human gut microbiota, and this was partially mitigated by L. plantarum CCFM639. This probiotic supplementation is potentially a promising and safe approach to alleviate the harmful effects of dietary Al exposure.
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Affiliation(s)
- Leilei Yu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122, China
| | - Hui Duan
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Lee Kellingray
- Gut Health and Microbiome Institute Strategic Programme, Quadram Institute Bioscience, Norwich, NR4 7UQ, UK
| | - Shi Cen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Fengwei Tian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122, China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, 214122, China
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, 214122, China.,(Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou, 225004, China
| | - Gwénaëlle Le Gall
- Department of Medicine, Faculty of Medicine and Health Sciences, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Melinda J Mayer
- Gut Health and Microbiome Institute Strategic Programme, Quadram Institute Bioscience, Norwich, NR4 7UQ, UK
| | - Qixiao Zhai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China. .,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China. .,International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122, China.
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, 214122, China.,Beijing Innovation Centre of Food Nutrition and Human Health, Beijing Technology & Business University, Beijing, 100048, China
| | - Arjan Narbad
- International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122, China.,Gut Health and Microbiome Institute Strategic Programme, Quadram Institute Bioscience, Norwich, NR4 7UQ, UK
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9
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Blatchford PA, Parkar SG, Hopkins W, Ingram JR, Sutton KH. Dose-Dependent Alterations to In Vitro Human Microbiota Composition and Butyrate Inhibition by a Supercritical Carbon Dioxide Hops Extract. Biomolecules 2019; 9:E390. [PMID: 31438572 PMCID: PMC6769549 DOI: 10.3390/biom9090390] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 08/19/2019] [Accepted: 08/19/2019] [Indexed: 12/16/2022] Open
Abstract
Hop cones (Humulus lupulus L.) have been used throughout history as an additive in beer brewing and as herbal supplements with medicinal and culinary properties. The objective of this study was to ascertain the effect of a range of concentrations of a supercritical CO2 extract of hops on the composition and metabolism of human gut bacterial communities using in vitro batch culture systems. Fermentations were conducted over 24 h using a mixed human fecal inoculum. Microbial metabolism was assessed by measuring organic acid production and microbial community alterations were determined by 16S rRNA gene sequencing. Butyrate, an important short chain fatty acid in maintaining colonic well-being, decreased at elevated concentrations of hops, which may partly be accounted for by the concomitant reduction of Eubacterium and Coprococcus, known butyrate-producing genera, and also the inhibition of Bifidobacterium, a beneficial organism that has a butyrogenic effect through metabolic cross-feeding with intestinal commensals. The hops compounds also caused dose-dependent increases in the potentially pathogenic Enterobacteriaceae and potentially beneficial Akkermansia. Thus, hops compounds had a significant impact on the structure of the bacterial consortium, which warrants further study including human clinical trials.
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Affiliation(s)
- Paul A Blatchford
- The New Zealand Institute for Plant and Food Research Limited (PFR), Private Bag 11600, Palmerston North 4442, New Zealand
| | - Shanthi G Parkar
- The New Zealand Institute for Plant and Food Research Limited (PFR), Private Bag 11600, Palmerston North 4442, New Zealand.
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10
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Harris HC, Edwards CA, Morrison DJ. Short Chain Fatty Acid Production from Mycoprotein and Mycoprotein Fibre in an In Vitro Fermentation Model. Nutrients 2019; 11:nu11040800. [PMID: 30965613 PMCID: PMC6520856 DOI: 10.3390/nu11040800] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 03/30/2019] [Accepted: 04/04/2019] [Indexed: 11/16/2022] Open
Abstract
Dietary mycoprotein (marketed as QuornTM) has many health benefits, including reductions in energy intake. The majority of studies evaluating mycoprotein focus on the protein content and very few consider the fibre content. Fibre consumption is also associated with decreased energy intake, which is partly attributed to short chain fatty acids (SCFAs) from fibre fermentation by colonic bacteria. To study the SCFA-producing capability of mycoprotein, in vitro batch fermentations were conducted, and SCFA production compared with that from extracted mycoprotein fibre, oligofructose (OF), rhamnose, and laminarin. Mycoprotein and mycoprotein fibre were both fermentable, resulting in a total SCFA production of 24.9 (1.7) and 61.2 (15.7) mmol/L, respectively. OF led to a significantly higher proportion of acetate compared to all other substrates tested (92.6 (2.8)%, p < 0.01). Rhamnose generated the highest proportion of propionate (45.3 (2.0)%, p < 0.01), although mycoprotein and mycoprotein fibre yielded a higher proportion of propionate compared with OF and laminarin. Butyrate proportion was the highest with laminarin (28.0 (10.0)% although mycoprotein fibre led to a significantly higher proportion than OF (p < 0.01). Mycoprotein is a valuable source of dietary protein, but its fibre content is also of interest. Further evaluation of the potential roles of the fibre content of mycoprotein is required.
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Affiliation(s)
- Hannah C Harris
- School of Medicine, Dentistry and Nursing, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow G31 2ER, UK.
- Scottish Universities Environmental Research Centre, University of Glasgow, Glasgow G75 0QF, UK.
| | - Christine A Edwards
- School of Medicine, Dentistry and Nursing, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow G31 2ER, UK.
| | - Douglas J Morrison
- Scottish Universities Environmental Research Centre, University of Glasgow, Glasgow G75 0QF, UK.
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11
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Fu X, Liu Z, Zhu C, Mou H, Kong Q. Nondigestible carbohydrates, butyrate, and butyrate-producing bacteria. Crit Rev Food Sci Nutr 2018; 59:S130-S152. [PMID: 30580556 DOI: 10.1080/10408398.2018.1542587] [Citation(s) in RCA: 248] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Nondigestible carbohydrates (NDCs) are fermentation substrates in the colon after escaping digestion in the upper gastrointestinal tract. Among NDCs, resistant starch is not hydrolyzed by pancreatic amylases but can be degraded by enzymes produced by large intestinal bacteria, including clostridia, bacteroides, and bifidobacteria. Nonstarch polysaccharides, such as pectin, guar gum, alginate, arabinoxylan, and inulin fructans, and nondigestible oligosaccharides and their derivatives, can also be fermented by beneficial bacteria in the large intestine. Butyrate is one of the most important metabolites produced through gastrointestinal microbial fermentation and functions as a major energy source for colonocytes by directly affecting the growth and differentiation of colonocytes. Moreover, butyrate has various physiological effects, including enhancement of intestinal barrier function and mucosal immunity. In this review, several representative NDCs are introduced, and their chemical components, structures, and physiological functions, including promotion of the proliferation of butyrate-producing bacteria and enhancement of butyrate production, are discussed. We also describe the strategies for achieving directional accumulation of colonic butyrate based on endogenous generation mechanisms.
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Affiliation(s)
- Xiaodan Fu
- a College of Food Science and Engineering , Ocean University of China , Qingdao , China
| | - Zhemin Liu
- a College of Food Science and Engineering , Ocean University of China , Qingdao , China
| | - Changliang Zhu
- a College of Food Science and Engineering , Ocean University of China , Qingdao , China
| | - Haijin Mou
- a College of Food Science and Engineering , Ocean University of China , Qingdao , China
| | - Qing Kong
- a College of Food Science and Engineering , Ocean University of China , Qingdao , China
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12
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Metabolic and microbial responses to the complexation of manuka honey with α-cyclodextrin after simulated gastrointestinal digestion and fermentation. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.01.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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13
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Lammerts van Bueren A, Mulder M, Leeuwen SV, Dijkhuizen L. Prebiotic galactooligosaccharides activate mucin and pectic galactan utilization pathways in the human gut symbiont Bacteroides thetaiotaomicron. Sci Rep 2017; 7:40478. [PMID: 28091546 PMCID: PMC5238430 DOI: 10.1038/srep40478] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 12/06/2016] [Indexed: 12/18/2022] Open
Abstract
Galactooligosaccharides (GOS) are prebiotic carbohydrates that impart changes in the gut bacterial composition of formula-fed infants to more closely resemble that of breast-fed infants. Consuming human milk oligosaccharides (HMOs) provides specific bacterial strains with an advantage for colonizing the infant intestine. These same effects are seen in infants after GOS consumption, however GOS are very complex mixtures and the underlying molecular mechanisms of how GOS mimic HMOs are relatively unknown. Here we studied the effects of GOS utilization on a prominent gut symbiont, Bacteroides thetaiotaomicron, which has been previously shown to consume HMOs via mucin O-glycan degradation pathways. We show that several pathways for targeting O-mucin glycans are activated in B. thetaiotaomicron by GOS, as well as the galactan utilization sytem. Characterization of the endo-galactanase from this system identified activity on various longer GOS substrates while a subset of GOS compounds were identified as potential activators of mucin glycan metabolism in B. thetaiotaomicron. Our results show that GOS functions as an inducer of mucin-glycan pathways while providing a nutrient source in the form of β-(1 → 4)-galactan. These metabolic features of GOS mixtures may serve to explain the beneficial effects that are seen for GOS supplemented infant formula.
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Affiliation(s)
- Alicia Lammerts van Bueren
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, The Netherlands
| | - Marieke Mulder
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, The Netherlands
| | - Sander van Leeuwen
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, The Netherlands
| | - Lubbert Dijkhuizen
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, The Netherlands
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14
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Harris HC, Edwards CA, Morrison DJ. Impact of Glycosidic Bond Configuration on Short Chain Fatty Acid Production from Model Fermentable Carbohydrates by the Human Gut Microbiota. Nutrients 2017; 9:nu9010026. [PMID: 28045429 PMCID: PMC5295070 DOI: 10.3390/nu9010026] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 12/16/2016] [Accepted: 12/22/2016] [Indexed: 12/21/2022] Open
Abstract
Short chain fatty acids (SCFA) are the major products of carbohydrate fermentation by gut bacteria. Different carbohydrates are associated with characteristic SCFA profiles although the mechanisms are unclear. The individual SCFA profile may determine any resultant health benefits. Understanding determinants of individual SCFA production would enable substrate choice to be tailored for colonic SCFA manipulation. To test the hypothesis that the orientation and position of the glycosidic bond is a determinant of SCFA production profile, a miniaturized in vitro human colonic batch fermentation model was used to study a range of isomeric glucose disaccharides. Diglucose α(1-1) fermentation led to significantly higher butyrate production (p < 0.01) and a lower proportion of acetate (p < 0.01) compared with other α bonded diglucoses. Diglucose β(1-4) also led to significantly higher butyrate production (p < 0.05) and significantly increased the proportions of propionate and butyrate compared with diglucose α(1-4) (p < 0.05). There was no significant effect of glycosidic bond configuration on absolute propionate production. Despite some differences in the SCFA production of different glucose disaccharides, there was no clear relationship between SCFA production and bond configuration, suggesting that other factors may be responsible for promoting selective SCFA production by the gut microbiota from different carbohydrates.
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Affiliation(s)
- Hannah C Harris
- School of Medicine, Dentistry and Nursing, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow G31 2ER, UK.
- Scottish Universities Environmental Research Centre, University of Glasgow, Glasgow G75 0QF, UK.
| | - Christine A Edwards
- School of Medicine, Dentistry and Nursing, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow G31 2ER, UK.
| | - Douglas J Morrison
- Scottish Universities Environmental Research Centre, University of Glasgow, Glasgow G75 0QF, UK.
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15
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Williams C, Walton G, Jiang L, Plummer S, Garaiova I, Gibson G. Comparative Analysis of Intestinal Tract Models. Annu Rev Food Sci Technol 2015; 6:329-50. [PMID: 25705934 DOI: 10.1146/annurev-food-022814-015429] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- C.F. Williams
- Cultech, Baglan Industrial Park, Port Talbot, West Glamorgan SA12 7BZ, United Kingdom; , ,
| | - G.E. Walton
- Department of Food and Nutritional Sciences, School of Chemistry, Food and Pharmacy, University of Reading, Reading RG6 6AP, United Kingdom;
| | - L. Jiang
- Cultech, Baglan Industrial Park, Port Talbot, West Glamorgan SA12 7BZ, United Kingdom; , ,
| | - S. Plummer
- Cultech, Baglan Industrial Park, Port Talbot, West Glamorgan SA12 7BZ, United Kingdom; , ,
| | - I. Garaiova
- Cultech, Baglan Industrial Park, Port Talbot, West Glamorgan SA12 7BZ, United Kingdom; , ,
| | - G.R. Gibson
- Department of Food and Nutritional Sciences, School of Chemistry, Food and Pharmacy, University of Reading, Reading RG6 6AP, United Kingdom;
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