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Zeng M, Oh JH, van Pijkeren JP, Pan X. Selective utilization of gluco-oligosaccharides by lactobacilli: A mechanism study revealing the impact of glycosidic linkages and degree of polymerization on their utilization. J Food Sci 2024; 89:523-539. [PMID: 38010727 DOI: 10.1111/1750-3841.16851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/13/2023] [Accepted: 11/07/2023] [Indexed: 11/29/2023]
Abstract
Gluco-oligosaccharides (GlcOS) are potential prebiotics that positively modulate beneficial gut commensals like lactobacilli. For the rational design of GlcOS as prebiotics or combined with lactobacilli as synbiotics, it is important to establish the structure requirements of GlcOS and specificity toward lactobacilli. Herein, the utilization of 10 GlcOS with varied degrees of polymerization (DP) and glycosidic linkages by 7 lactobacilli strains (Levilactobacillus brevis ATCC 8287, Limosilactobacillus reuteri ATCC PTA 6475, Lacticaseibacillus rhamnosus ATCC 53103, Lentilactobacillus buchneri ATCC 4005, Limosilactobacillus fermentum FUA 3589, Lactiplantibacillus plantarum WCFS1, and Lactobacillus gasseri ATCC 33323) was studied. L. brevis ATCC 8287 was the only strain that grew on α/β-(1→4/6) linked disaccharides, whereas other strains showed diverse patterns, dependent on the availability of genes encoding sugar transporters and catabolic enzymes. The effect of DP on GlcOS utilization was strain dependent. β-(1→4) Linked cello-oligosaccharides (COS) supported the growth of L. brevis ATCC 8287 and L. plantarum WCFS1, and shorter COS (DP 2-3) were preferentially utilized over longer COS (DP 4-7) (consumption ≥90% vs. 40%-60%). α-(1→4) Linked maltotriose and maltodextrin (DP 2-11) were effectively utilized by L. brevis ATCC 8287, L. reuteri ATCC 6475, and L. plantarum WCFS1, but not L. fermentum FUA 3589. Growth of L. brevis ATCC 8287 on branched isomalto-oligosaccharides (DP 2-6) suggested preferential consumption of DP 2-3, but no preference between α-(1→6) and α-(1→4) linkages. The knowledge of the structure-specific GlcOS utilization by different lactobacilli from this study helps the structural rationale of GlcOS for prebiotic development.
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Affiliation(s)
- Meijun Zeng
- Department of Biological Systems Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Jee-Hwan Oh
- Department of Food Science, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | | | - Xuejun Pan
- Department of Biological Systems Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA
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Chen J, Li Z, Wang X, Fan B, Deng F, D.Yu H, Ze X, Zhu L, Yin Y, Chen Y, Zhao J, Yang Y, Wang X. Isomaltooligosaccharides Sustain the Growth of Prevotella Both In Vitro and in Animal Models. Microbiol Spectr 2022; 10:e0262121. [PMID: 36377936 PMCID: PMC9769830 DOI: 10.1128/spectrum.02621-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 10/25/2022] [Indexed: 11/16/2022] Open
Abstract
The human digestive tract is colonized by trillions of bacterial cells that play important roles in human health and diseases. It is well known that dietary habits are associated with human microbiota enterotypes. However, the factors that determine the enterotype still remain elusive. In this study, it was first examined, via in vitro batch fermentation, how different carbohydrates affect the Bacteroides and Prevotella enterotypes. Among the 11 substrates (fructo-, galacto-, xylo-, manno-, and isomalto-oligosaccharides [IMO] and lactulose, raffinose, starch, inulin [INU], mannitol, and xylitol) tested, IMO, INU, and starch were found to sustain the growth of Prevotella through batch fermentation. The development of the Prevotella and Bacteroides enterotypes was further simulated in chemostats using fecal samples. IMO coupled with faster dilution rates and lower pH were required to sustain the growth of Prevotella copri in the chemostat based on 16S rRNA gene and metagenomic sequencing. Meanwhile, starch with relatively lower dilution rates and higher pH was required to support the development of the Bacteroides enterotype. Amylo-α-1,6-glucosidase, pectin, and xylan lyases were the carbohydrate-active enzymes associated with the Prevotella enterotype. The Bacteroides enterotype was associated with more diversified carbohydrate-active enzymes. Consistently, since honey contains high isomaltose content, mice fed IMO and honey displayed an increased relative abundance of Prevotella in the colon. In conclusion, both in vitro systems and a mouse model were used to demonstrate that IMO maintains the Prevotella enterotype. This result provides insight into the nutritional requirements underlying gut enterotype formation. IMPORTANCE The Prevotella enterotype type is a human traditional enterotype with high dietary fiber intake, which is related to healthy ageing and Parkinson's disease development. Manipulations of the dwelled gut microbes by dietary isomalto-oligosaccharides efficiently sustained Prevotella type enterotypes, indicating that it can be used in the improvement of elderly health by increasing the gut transit time.
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Affiliation(s)
- Junkui Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, People’s Republic of China
| | - Zhengpeng Li
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, People’s Republic of China
| | - Xiaofan Wang
- Department of Animal Science, Division of Agriculture, University of Arkansas, Fayetteville, Arkansas, USA
| | - Bin Fan
- Department of Critical Care Medicine, Zhejiang Provincial People’s Hospital, People’s Hospital of Hangzhou Medical College, Hangzhou, People’s Republic of China
| | - Feilong Deng
- Department of Animal Science, Division of Agriculture, University of Arkansas, Fayetteville, Arkansas, USA
| | - Hongwei D.Yu
- Department of Biomedical Sciences, Marshall University, Huntington, West Virginia, USA
| | - Xiaolei Ze
- BYHEALTH CO., Ltd., Guangzhou, People’s Republic of China
| | - Liying Zhu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, People’s Republic of China
| | - Yeshi Yin
- Hunan University of Science and Engineering, Yongzhou, Hunan, People’s Republic of China
| | - Yanhong Chen
- Laboratory Animal Center of Zhejiang University, Hangzhou, People’s Republic of China
| | - Jiangchao Zhao
- Department of Animal Science, Division of Agriculture, University of Arkansas, Fayetteville, Arkansas, USA
| | - Yunsheng Yang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, People’s Republic of China
| | - Xin Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, People’s Republic of China
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Pi G, Wang J, Song W, Li Y, Yang H. Effects of isomalto-oligosaccharides and herbal extracts on growth performance, serum biochemical profiles and intestinal bacterial populations in early-weaned piglets. J Anim Physiol Anim Nutr (Berl) 2022; 106:671-681. [PMID: 35088457 DOI: 10.1111/jpn.13687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 01/08/2022] [Accepted: 01/12/2022] [Indexed: 11/30/2022]
Abstract
The objective of the current study was to investigate the effects of isomalto-oligosaccharide (IMO), Chinese herbal medicine extract (CHE) or their combination on the growth performance, diarrhoea incidence, serum biochemical profiles, inflammatory cytokine expression, intestinal morphology and microflora of weaned piglets. Thirty-two ([Landrace × Yorkshire] × Duroc) piglets, weaned at 25 days of age, were randomly assigned into four groups. Group I was fed the basal diet. Group II were fed a basal diet supplemented with 2 g/kg IMO for 14 consecutive days and then 4 g/kg IMO for another 14 days. Group III were fed diet with 0.5 g/kg CHE for 14 days and 1 g/kg CHE for another 14 days. Group IV were fed diet with (2 g/kg IMO + 0.5 g/kg CHE) for 14 days and (4 g/kg IMO +1 g/kg CHE) for another 14 days. Results showed that diets supplemented with IMO, CHE or their combination did not influence the diarrhoea rate and intestinal morphology, while co-administration of IMO with CHE tended to have higher average daily gain. Serum biochemical analysis showed that dietary CHE decreased aspartate aminotransferase levels, while inclusion of IMO led to a decrease in high-density lipoprotein. Moreover, co-administration of IMO with CHE significantly upregulated the expression of TGF-β, a potent anti-inflammatory cytokine, in jejunal mucosa of piglets. Further, CHE significantly increased the abundance of Bifidobacterium in ileal digesta. Meanwhile, the combination of IMO and CHE significantly increased Bifidobacterium in the caecum of piglets. Additionally, dietary IMO, CHE or their combination significantly reduced the number of potential entero-pathogen Escherichia coli in ileal contents and Clostridium species in caecal digesta. These results indicated that application of IMO or CHE could favourably modulate the intestinal microbial composition of piglets, while their beneficial impact and molecular mechanism on intestinal health warrants further investigation.
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Affiliation(s)
- Guolin Pi
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Junmin Wang
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Wenxin Song
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Yali Li
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Huansheng Yang
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, College of Life Sciences, Hunan Normal University, Changsha, China
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Lv M, Lei Q, Yin H, Hu T, Wang S, Dong K, Pan H, Liu Y, Lin Q, Cao Z. In vitro Effects of Prebiotics and Synbiotics on Apis cerana Gut Microbiota. Pol J Microbiol 2022; 70:511-520. [PMID: 34970318 PMCID: PMC8702607 DOI: 10.33073/pjm-2021-049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/27/2021] [Indexed: 11/11/2022] Open
Abstract
This study aimed to investigate in vitro effects of the selected prebiotics alone, and in combination with two potential probiotic Lactobacillus strains on the microbial composition of Apis cerana gut microbiota and acid production. Four prebiotics, inulin, fructo-oligosaccharides, xylo-oligosaccharides, and isomalto-oligosaccharides were chosen, and glucose served as the carbon source. Supplementation of this four prebiotics increased numbers of Bifidobacterium and lactic acid bacteria while decreasing the pH value of in vitro fermentation broth inoculated with A. cerana gut microbiota compared to glucose. Then, two potential probiotics derived from A. cerana gut at different dosages, Lactobacillus helveticus KM7 and Limosilactobacillus reuteri LP4 were added with isomalto-oligosaccharides in fermentation broth inoculated with A. cerana gut microbiota, respectively. The most pronounced impact was observed with isomalto-oligosaccharides. Compared to isomalto-oligosaccharides alone, the combination of isomalto-oligosaccharides with both lactobacilli strains induced the growth of Bifidobacterium, LAB, and total bacteria and reduced the proliferation of Enterococcus and fungi. Consistent with these results, the altered metabolic activity was observed as lowered pH in in vitro culture of gut microbiota supplemented with isomalto-oligosaccharides and lactobacilli strains. The symbiotic impact varied with the types and concentration of Lactobacillus strains and fermentation time. The more effective ability was observed with IMO combined with L. helveticus KM7. These results suggested that isomalto-oligosaccharides could be a potential prebiotic and symbiotic with certain lactobacilli strains on A. cerana gut microbiota.
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Affiliation(s)
- Mingkui Lv
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Qingzhi Lei
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Huajuan Yin
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Tiannian Hu
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Sifan Wang
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Kun Dong
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Hongbin Pan
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming, People's Republic of China.,Yunnan Provincial Key Laboratory of Animal Nutrition and Feed Science, Kunming, People's Republic of China
| | - Yiqiu Liu
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Qiuye Lin
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Zhenhui Cao
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming, People's Republic of China.,Yunnan Provincial Key Laboratory of Animal Nutrition and Feed Science, Kunming, People's Republic of China
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Ernits K, Kjeldsen C, Persson K, Grigor E, Alamäe T, Visnapuu T. Structural Insight into a Yeast Maltase-The BaAG2 from Blastobotrys adeninivorans with Transglycosylating Activity. J Fungi (Basel) 2021; 7:816. [PMID: 34682239 DOI: 10.3390/jof7100816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 11/16/2022] Open
Abstract
An early-diverged yeast, Blastobotrys (Arxula) adeninivorans (Ba), has biotechnological potential due to nutritional versatility, temperature tolerance, and production of technologically applicable enzymes. We have biochemically characterized from the Ba type strain (CBS 8244) the GH13-family maltase BaAG2 with efficient transglycosylation activity on maltose. In the current study, transglycosylation of sucrose was studied in detail. The chemical entities of sucrose-derived oligosaccharides were determined using nuclear magnetic resonance. Several potentially prebiotic oligosaccharides with α-1,1, α-1,3, α-1,4, and α-1,6 linkages were disclosed among the products. Trisaccharides isomelezitose, erlose, and theanderose, and disaccharides maltulose and trehalulose were dominant transglycosylation products. To date no structure for yeast maltase has been determined. Structures of the BaAG2 with acarbose and glucose in the active center were solved at 2.12 and 2.13 Å resolution, respectively. BaAG2 exhibited a catalytic domain with a (β/α)8-barrel fold and Asp216, Glu274, and Asp348 as the catalytic triad. The fairly wide active site cleft contained water channels mediating substrate hydrolysis. Next to the substrate-binding pocket an enlarged space for potential binding of transglycosylation acceptors was identified. The involvement of a Glu (Glu309) at subsite +2 and an Arg (Arg233) at subsite +3 in substrate binding was shown for the first time for α-glucosidases.
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Logtenberg MJ, Akkerman R, Hobé RG, Donners KMH, Van Leeuwen SS, Hermes GDA, de Haan BJ, Faas MM, Buwalda PL, Zoetendal EG, de Vos P, Schols HA. Structure-Specific Fermentation of Galacto-Oligosaccharides, Isomalto-Oligosaccharides and Isomalto/Malto-Polysaccharides by Infant Fecal Microbiota and Impact on Dendritic Cell Cytokine Responses. Mol Nutr Food Res 2021; 65:e2001077. [PMID: 34060703 PMCID: PMC8459273 DOI: 10.1002/mnfr.202001077] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 04/18/2021] [Indexed: 12/23/2022]
Abstract
SCOPE Next to galacto-oligosaccharides (GOS), starch-derived isomalto-oligosaccharide preparation (IMO) and isomalto/malto-polysaccharides (IMMP) could potentially be used as prebiotics in infant formulas. However, it remains largely unknown how the specific molecular structures of these non-digestible carbohydrates (NDCs) impact fermentability and immune responses in infants. METHODS AND RESULTS In vitro fermentation of GOS, IMO and IMMP using infant fecal inoculum of 2- and 8-week-old infants shows that only GOS and IMO are fermented by infant fecal microbiota. The degradation of GOS and IMO coincides with an increase in Bifidobacterium and production of acetate and lactate, which is more pronounced with GOS. Individual isomers with an (1↔1)-linkage or di-substituted reducing terminal glucose residue are more resistant to fermentation. GOS, IMO, and IMMP fermentation digesta attenuates cytokine profiles in immature dendritic cells (DCs), but the extent is dependent on the infants age and NDC structure. CONCLUSION The IMO preparation, containing reducing and non-reducing isomers, shows similar fermentation patterns as GOS in fecal microbiota of 2-week-old infants. Knowledge obtained on the substrate specificities of infant fecal microbiota and the subsequent regulatory effects of GOS, IMO and IMMP on DC responses might contribute to the design of tailored NDC mixtures for infants of different age groups.
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Affiliation(s)
- Madelon J. Logtenberg
- Laboratory of Food ChemistryWageningen University & ResearchBornse Weilanden 9Wageningen6708 WGThe Netherlands
| | - Renate Akkerman
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Centre GroningenGroningenThe Netherlands
| | - Rosan G. Hobé
- Laboratory of Food ChemistryWageningen University & ResearchBornse Weilanden 9Wageningen6708 WGThe Netherlands
| | - Kristel M. H. Donners
- Laboratory of Food ChemistryWageningen University & ResearchBornse Weilanden 9Wageningen6708 WGThe Netherlands
| | - Sander S. Van Leeuwen
- Cluster Human Nutrition & HealthDepartment of Laboratory MedicineUniversity Medical Center GroningenGroningenThe Netherlands
| | - Gerben D. A. Hermes
- Laboratory of MicrobiologyWageningen University & ResearchWageningenThe Netherlands
| | - Bart J. de Haan
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Centre GroningenGroningenThe Netherlands
| | - Marijke M. Faas
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Centre GroningenGroningenThe Netherlands
| | - Piet L. Buwalda
- Biobased Chemistry and TechnologyWageningen University & ResearchWageningenThe Netherlands
- Avebe Innovation CenterGroningenThe Netherlands
| | - Erwin G. Zoetendal
- Laboratory of MicrobiologyWageningen University & ResearchWageningenThe Netherlands
| | - Paul de Vos
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Centre GroningenGroningenThe Netherlands
| | - Henk A. Schols
- Laboratory of Food ChemistryWageningen University & ResearchBornse Weilanden 9Wageningen6708 WGThe Netherlands
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Liu D, Cheng H, Deng Z. [One step production of isomalto-oligosaccharides by engineered Yarrowia lipolytica yeast co-displayed β-amylase and α-transglucosidase]. Sheng Wu Gong Cheng Xue Bao 2019; 35:121-132. [PMID: 30756541 DOI: 10.13345/j.cjb.180077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Isomalto-oligosaccharides (IMO) have good physiochemical properties and excellent physiological functions to make it widely used in food, medicine, feed, cosmetics and other industries. However, the procedures for industrial production of IMO are complicated. Therefore, it is necessary to develop an economical and easy-to-operate method. The genes encoding for β-amylase and α-transglucosidase were fused and co-displayed on the yeast cell surface of Yarrowia lipolytica which can convert liquefied starch to IMO in one step. The highest IMO purity of 75.3% was obtained using the displayed fusion-enzyme at 50 °C. This method showed potential application in IMO production.
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Affiliation(s)
- Dawen Liu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hairong Cheng
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zixin Deng
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
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Singh DP, Khare P, Bijalwan V, Baboota RK, Singh J, Kondepudi KK, Chopra K, Bishnoi M. Coadministration of isomalto-oligosaccharides augments metabolic health benefits of cinnamaldehyde in high fat diet fed mice. Biofactors 2017; 43:821-835. [PMID: 28799667 DOI: 10.1002/biof.1381] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 07/04/2017] [Accepted: 07/04/2017] [Indexed: 01/05/2023]
Abstract
Bacteriostatic properties of a potential anti-obesity agent cinnamaldehyde (CMN) may present untoward effects on the resident gut microbiota. Here, we evaluated whether the combination of Isomalto-oligosaccharides (IMOs) with CMN prevents unwanted effects of CMN on gut microbiota and associated metabolic outcomes in HFD-fed mice. Male Swiss albino mice divided into four groups (n = 10), were fed on normal chow, or HFD (58% fat kcal), HFD + CMN (10 mg kg-1 ) and HFD + CMN (10 mg kg-1 ) + IMOs (1 g kg-1 ) for 12 weeks. Effects on HFD-induced biochemical, histological, inflammatory and genomic changes in the gastrointestinal tract, liver, and visceral white adipose tissue were studied. Cosupplementation of CMN with IMOs potentiates its preventive action against HFD-induced increase in serum LPS and abundances of selected LPS producing bacteria (Enterobacteriaceae, Escherichia Coli, Cronobacter sp, Citrobacter sp., Klebsiella sp., Salmonella sp.). CMN and IMOs co-administration prevented HFD-induced decrease in selected beneficial gut bacterial abundances (Bifidobacteria, Roseburia sp., Akkermansia muciniphila, Feacalibacterium sp.). CMN's effects against HFD-induced increase in gut permeability, histological and inflammatory changes in the colon were further augmented by cosupplementation of IMOs. Similar effects were observed in hepatic inflammatory markers. Cosupplementation of CMN with IMOs and CMN alone administration prevented HFD-induced changes in peripheral hormones and lipid metabolism-related parameters. This study provides evidence that coadministration of IMOs with CMN potentiates its anti-obesity effect and limits the side effects of CMN on gastrointestinal flora. Further, this study gives us important direction for the development of a concept-based novel class of functional foods/nutraceuticals for improved metabolic health. © BioFactors, 43(6):821-835, 2017.
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Affiliation(s)
- Dhirendra Pratap Singh
- Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar (Mohali), Punjab, India
- Pharmacology Division, University Institute of Pharmaceutical Sciences (UIPS), Punjab University, Chandigarh, India
| | - Pragyanshu Khare
- Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar (Mohali), Punjab, India
- Pharmacology Division, University Institute of Pharmaceutical Sciences (UIPS), Punjab University, Chandigarh, India
| | - Vandana Bijalwan
- Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar (Mohali), Punjab, India
| | - Ritesh Kumar Baboota
- Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar (Mohali), Punjab, India
| | - Jagdeep Singh
- Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar (Mohali), Punjab, India
| | - Kanthi Kiran Kondepudi
- Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar (Mohali), Punjab, India
| | - Kanwaljit Chopra
- Pharmacology Division, University Institute of Pharmaceutical Sciences (UIPS), Punjab University, Chandigarh, India
| | - Mahendra Bishnoi
- Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar (Mohali), Punjab, India
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Abstract
Oligosaccharides, compounds that are composed of 2-10 monosaccharide residues, are major carbohydrate sources in habitats populated by lactobacilli. Moreover, oligosaccharide metabolism is essential for ecological fitness of lactobacilli. Disaccharide metabolism by lactobacilli is well understood; however, few data on the metabolism of higher oligosaccharides are available. Research on the ecology of intestinal microbiota as well as the commercial application of prebiotics has shifted the interest from (digestible) disaccharides to (indigestible) higher oligosaccharides. This review provides an overview on oligosaccharide metabolism in lactobacilli. Emphasis is placed on maltodextrins, isomalto-oligosaccharides, fructo-oligosaccharides, galacto-oligosaccharides, and raffinose-family oligosaccharides. Starch is also considered. Metabolism is discussed on the basis of metabolic studies related to oligosaccharide metabolism, information on the cellular location and substrate specificity of carbohydrate transport systems, glycosyl hydrolases and phosphorylases, and the presence of metabolic genes in genomes of 38 strains of lactobacilli. Metabolic pathways for disaccharide metabolism often also enable the metabolism of tri- and tetrasaccharides. However, with the exception of amylase and levansucrase, metabolic enzymes for oligosaccharide conversion are intracellular and oligosaccharide metabolism is limited by transport. This general restriction to intracellular glycosyl hydrolases differentiates lactobacilli from other bacteria that adapted to intestinal habitats, particularly Bifidobacterium spp.
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Affiliation(s)
- Michael G. Gänzle
- Department of Agricultural, Food and Nutritional Science, University of AlbertaEdmonton, AB, Canada
| | - Rainer Follador
- Department of Agricultural, Food and Nutritional Science, University of AlbertaEdmonton, AB, Canada
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