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Thompson RS, Bowers SJ, Vargas F, Hopkins S, Kelley T, Gonzalez A, Lowry CA, Dorrestein PC, Vitaterna MH, Turek FW, Knight R, Wright KP, Fleshner M. A Prebiotic Diet Containing Galactooligosaccharides and Polydextrose Produces Dynamic and Reproducible Changes in the Gut Microbial Ecosystem in Male Rats. Nutrients 2024; 16:1790. [PMID: 38892722 PMCID: PMC11175065 DOI: 10.3390/nu16111790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 05/30/2024] [Accepted: 06/04/2024] [Indexed: 06/21/2024] Open
Abstract
Despite substantial evidence supporting the efficacy of prebiotics for promoting host health and stress resilience, few experiments present evidence documenting the dynamic changes in microbial ecology and fecal microbially modified metabolites over time. Furthermore, the literature reports a lack of reproducible effects of prebiotics on specific bacteria and bacterial-modified metabolites. The current experiments examined whether consumption of diets enriched in prebiotics (galactooligosaccharides (GOS) and polydextrose (PDX)), compared to a control diet, would consistently impact the gut microbiome and microbially modified bile acids over time and between two research sites. Male Sprague Dawley rats were fed control or prebiotic diets for several weeks, and their gut microbiomes and metabolomes were examined using 16S rRNA gene sequencing and untargeted LC-MS/MS analysis. Dietary prebiotics altered the beta diversity, relative abundance of bacterial genera, and microbially modified bile acids over time. PICRUSt2 analyses identified four inferred functional metabolic pathways modified by the prebiotic diet. Correlational network analyses between inferred metabolic pathways and microbially modified bile acids revealed deoxycholic acid as a potential network hub. All these reported effects were consistent between the two research sites, supporting the conclusion that dietary prebiotics robustly changed the gut microbial ecosystem. Consistent with our previous work demonstrating that GOS/PDX reduces the negative impacts of stressor exposure, we propose that ingesting a diet enriched in prebiotics facilitates the development of a health-promoting gut microbial ecosystem.
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Affiliation(s)
- Robert S. Thompson
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; (R.S.T.); (T.K.); (C.A.L.); (K.P.W.J.)
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Samuel J. Bowers
- Department of Neurobiology, Northwestern University, Center for Sleep and Circadian Biology, Evanston, IL 60208, USA; (S.J.B.); (M.H.V.); (F.W.T.)
| | - Fernando Vargas
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA 92093, USA (P.C.D.)
| | - Shelby Hopkins
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; (R.S.T.); (T.K.); (C.A.L.); (K.P.W.J.)
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Tel Kelley
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; (R.S.T.); (T.K.); (C.A.L.); (K.P.W.J.)
| | - Antonio Gonzalez
- Department of Pediatrics, University of California San Diego, San Diego, CA 92093, USA (R.K.)
| | - Christopher A. Lowry
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; (R.S.T.); (T.K.); (C.A.L.); (K.P.W.J.)
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Pieter C. Dorrestein
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA 92093, USA (P.C.D.)
| | - Martha Hotz Vitaterna
- Department of Neurobiology, Northwestern University, Center for Sleep and Circadian Biology, Evanston, IL 60208, USA; (S.J.B.); (M.H.V.); (F.W.T.)
| | - Fred W. Turek
- Department of Neurobiology, Northwestern University, Center for Sleep and Circadian Biology, Evanston, IL 60208, USA; (S.J.B.); (M.H.V.); (F.W.T.)
| | - Rob Knight
- Department of Pediatrics, University of California San Diego, San Diego, CA 92093, USA (R.K.)
- Department of Computer Science and Engineering, University of California San Diego, San Diego, CA 92093, USA
- Center for Microbiome Innovation, University of California San Diego, San Diego, CA 92093, USA
| | - Kenneth P. Wright
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; (R.S.T.); (T.K.); (C.A.L.); (K.P.W.J.)
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Monika Fleshner
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; (R.S.T.); (T.K.); (C.A.L.); (K.P.W.J.)
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
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Jing W, Hou F, Wu X, Zheng M, Zheng Y, Lu F, Liu F. A Critical Review on Immobilized Sucrose Isomerase and Cells for Producing Isomaltulose. Foods 2024; 13:1228. [PMID: 38672899 PMCID: PMC11048954 DOI: 10.3390/foods13081228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/07/2024] [Accepted: 04/14/2024] [Indexed: 04/28/2024] Open
Abstract
Isomaltulose is a novel sweetener and is considered healthier than the common sugars, such as sucrose or glucose. It has been internationally recognized as a safe food product and holds vast potential in pharmaceutical and food industries. Sucrose isomerase is commonly used to produce isomaltulose from the substrate sucrose in vitro and in vivo. However, free cells/enzymes were often mixed with the product, making recycling difficult and leading to a significant increase in production costs. Immobilized cells/enzymes have the following advantages including easy separation from products, high stability, and reusability, which can significantly reduce production costs. They are more suitable than free ones for industrial production. Recently, immobilized cells/enzymes have been encapsulated using composite materials to enhance their mechanical strength and reusability and reduce leakage. This review summarizes the advancements made in immobilized cells/enzymes for isomaltulose production in terms of refining traditional approaches and innovating in materials and methods. Moreover, innovations in immobilized enzyme methods include cross-linked enzyme aggregates, nanoflowers, inclusion bodies, and directed affinity immobilization. Material innovations involve nanomaterials, graphene oxide, and so on. These innovations circumvent challenges like the utilization of toxic cross-linking agents and enzyme leakage encountered in traditional methods, thus contributing to enhanced enzyme stability.
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Affiliation(s)
| | | | | | | | | | | | - Fufeng Liu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China; (W.J.); (F.H.); (X.W.); (M.Z.); (Y.Z.); (F.L.)
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Gonzalez-Mercado VJ, Lim J, Aouizerat B. Insights from Bacterial 16S rRNA Gene into Bacterial Genera and Predicted Metabolic Pathways Associated with Stool Consistency in Rectal Cancer Patients: A Proof of Concept. Biol Res Nurs 2023; 25:491-500. [PMID: 36859821 PMCID: PMC10404905 DOI: 10.1177/10998004231159623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
PURPOSE To examine if gut microbial taxa abundances and predicted functional pathways correlate with Bristol Stool Form Scale (BSFS) classification at the end of neoadjuvant chemotherapy and radiation therapy (CRT) for rectal cancer. METHODS Rectal cancer patients (n = 39) provided stool samples for 16S rRNA gene sequencing. Stool consistency was evaluated using the BSFS. Gut microbiome data were analyzed using QIIME2. Correlation analysis were performed in R. RESULTS At the genus level, Staphylococcus positively correlates (Spearman's rho = 0.26), while Anaerofustis, Roseburia, Peptostreptococcaceae unclassified, Ruminococcaceae UBA1819, Shuttleworthia, Ca. Soleaferrea, Anaerostignum, Oscillibacter, and Akkermansia negatively correlate with BSFS scores (Spearman's rho -0.20 to -0.42). Predicted pathways, including mycothiol biosynthesis and sucrose degradation III (sucrose invertase), were positively correlated with BSFS (Spearman's rho = 0.03-0.21). CONCLUSION The data support that in rectal cancer patients, stool consistency is an important factor to include in microbiome studies. Loose/liquid stools may be linked to Staphylococcus abundance and to mycothiol biosynthesis and sucrose degradation pathways.
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Affiliation(s)
| | - Jean Lim
- University of South Florida Tampa Campus, Tampa, FL, USA
| | - Bradley Aouizerat
- Department of Oral and Maxillofacial Surgery, New York University, New York, NY, USA
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Wu J, Yang K, Fan H, Wei M, Xiong Q. Targeting the gut microbiota and its metabolites for type 2 diabetes mellitus. Front Endocrinol (Lausanne) 2023; 14:1114424. [PMID: 37229456 PMCID: PMC10204722 DOI: 10.3389/fendo.2023.1114424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 04/28/2023] [Indexed: 05/27/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a metabolic disorder characterized by hyperglycemia and insulin resistance. The incidence of T2DM is increasing globally, and a growing body of evidence suggests that gut microbiota dysbiosis may contribute to the development of this disease. Gut microbiota-derived metabolites, including bile acids, lipopolysaccharide, trimethylamine-N-oxide, tryptophan and indole derivatives, and short-chain fatty acids, have been shown to be involved in the pathogenesis of T2DM, playing a key role in the host-microbe crosstalk. This review aims to summarize the molecular links between gut microbiota-derived metabolites and the pathogenesis of T2DM. Additionally, we review the potential therapy and treatments for T2DM using probiotics, prebiotics, fecal microbiota transplantation and other methods to modulate gut microbiota and its metabolites. Clinical trials investigating the role of gut microbiota and its metabolites have been critically discussed. This review highlights that targeting the gut microbiota and its metabolites could be a potential therapeutic strategy for the prevention and treatment of T2DM.
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Affiliation(s)
- Jiaqiang Wu
- The Second Clinical Medical College of Nanchang University, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Kangping Yang
- The Second Clinical Medical College of Nanchang University, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hancheng Fan
- Department of Histology and Embryology, School of Basic Medicine, Nanchang University, Nanchang, China
| | - Meilin Wei
- Department of Endocrinology and Metabolism, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qin Xiong
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Nanchang University, Nanchang, China
- Jiangxi Clinical Research Center for Endocrine and Metabolic Disease, Nanchang, China
- Jiangxi Branch of National Clinical Research Center for Metabolic Disease, Nanchang, China
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Krišto M, Lugović-Mihić L, Muñoz M, Rupnik M, Mahnic A, Ozretić P, Jaganjac M, Ćesić D, Kuna M. Gut Microbiome Composition in Patients with Chronic Urticaria: A Review of Current Evidence and Data. Life (Basel) 2023; 13:life13010152. [PMID: 36676101 PMCID: PMC9860868 DOI: 10.3390/life13010152] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/21/2022] [Accepted: 12/25/2022] [Indexed: 01/06/2023] Open
Abstract
Recent studies have linked gut microorganism composition and chronic urticaria (CU); however, the underlying mechanisms responsible for this connection are unknown. Since the human immune system is in homeostasis with microbiota, and the composition of the microbiome regulates the development and function of the immune system, it is likely that an alteration of microbiota components (a dysbiosis) could influence the course of chronic spontaneous urticaria (CSU), including disease severity, patient quality of life and treatment outcome. To date, several studies have identified changes in the gut microbiota composition of patients with CSU, though only a few have exhibited metabolic abnormalities associated with gut dysbiosis. The studies on CSU patients predominantly showed that the relative abundance of beneficial bacteria was decreased (Firmicutes and Bacteroides), while that of opportunistic bacteria was increased (Enterobacteria and Proteobacteria). In addition, serum metabolome analysis revealed that gut microbiota-associated alterations in unsaturated fatty acids and the butanoate metabolism pathway may play a role in CSU. These findings are potentially associated with inflammation mediated by the imbalance of Th1/Th2/Th17 cytokines, which might contribute to CSU pathogenesis. Further research in this field could improve clinical, diagnostic, and therapeutic approaches to patients with CSU. By applying new knowledge on gut microbial communities and metabolomics, future CSU therapies could modify the microbiota composition using agents such as probiotics or other similar agents, which, in combination with current standard therapies, could hopefully lead to a reduction in symptoms and an improved quality of life for CSU patients.
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Affiliation(s)
- Mirela Krišto
- Department of Dermatovenereology, University Hospital Centre Sestre Milosrdnice, 10000 Zagreb, Croatia
| | - Liborija Lugović-Mihić
- Department of Dermatovenereology, University Hospital Centre Sestre Milosrdnice, 10000 Zagreb, Croatia
- School of Dental Medicine, 10000 Zagreb, Croatia
- Correspondence: ; Tel.: +385-1-3787-480
| | - Melba Muñoz
- Institute of Allergology, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, and Humboldt-Universität zu Berlin, 13125 Berlin, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, 13125 Berlin, Germany
| | - Maja Rupnik
- Department for Microbiological Research, National Laboratory for Health, Environment and Food, SI-2000 Maribor, Slovenia
- Department of Microbiology, Faculty of Medicine, University of Maribor, SI-2000 Maribor, Slovenia
| | - Aleksander Mahnic
- Department for Microbiological Research, National Laboratory for Health, Environment and Food, SI-2000 Maribor, Slovenia
| | - Petar Ozretić
- Laboratory for Hereditary Cancer, Division of Molecular Medicine, Ruđer Bošković Institute,10000 Zagreb, Croatia
| | - Morana Jaganjac
- Laboratory for Oxidative Stress, Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - Diana Ćesić
- Department of Dermatovenereology, University Hospital Centre Sestre Milosrdnice, 10000 Zagreb, Croatia
| | - Matea Kuna
- Department of Dermatovenereology, University Hospital Centre Sestre Milosrdnice, 10000 Zagreb, Croatia
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Gut Microbiota Alterations in Trace Amine-Associated Receptor 9 (TAAR9) Knockout Rats. Biomolecules 2022; 12:biom12121823. [PMID: 36551251 PMCID: PMC9775382 DOI: 10.3390/biom12121823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/27/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Trace amine-associated receptors (TAAR1-TAAR9) are a family of G-protein-coupled monoaminergic receptors which might have great pharmacological potential. It has now been well established that TAAR1 plays an important role in the central nervous system. Interestingly, deletion of TAAR9 in rats leads to alterations in the periphery. Previously, we found that knockout of TAAR9 in rats (TAAR9-KO rats) decreased low-density lipoprotein cholesterol levels in the blood. TAAR9 was also identified in intestinal tissues, and it is known that it responds to polyamines. To elucidate the role of TAAR9 in the intestinal epithelium, we analyzed TAAR9-co-expressed gene clusters in public data for cecum samples. As identified by gene ontology enrichment analysis, in the intestine, TAAR9 is co-expressed with genes involved in intestinal mucosa homeostasis and function, including cell organization, differentiation, and death. Additionally, TAAR9 was co-expressed with genes implicated in dopamine signaling, which may suggest a role for this receptor in the regulation of peripheral dopaminergic transmission. To further investigate how TAAR9 might be involved in colonic mucosal homeostasis, we analyzed the fecal microbiome composition in TAAR9-KO rats and their wild-type littermates. We identified a significant difference in the number of observed taxa between the microbiome of TAAR9-KO and wild-type rats. In TAAR9-KO rats, the gut microbial community became more variable compared with the wild-type rats. Furthermore, it was found that the family Saccharimonadaceae, which is one of the top 10 most abundant families in TAAR9-KO rat feces, is almost completely absent in wild-type animal fecal samples. Taken together, these data indicate a role of TAAR9 in intestinal function.
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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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Isomerization of 6-O-substituted glucose and fructose under neutral pH conditions and subsequent β-elimination reactions. Carbohydr Res 2022; 519:108626. [DOI: 10.1016/j.carres.2022.108626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 06/16/2022] [Accepted: 06/20/2022] [Indexed: 11/19/2022]
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Xie T, Kong F, Wang W, Wang Y, Yang H, Cao Z, Li S. In vitro and in vivo Studies of Soybean Peptides on Milk Production, Rumen Fermentation, Ruminal Bacterial Community, and Blood Parameters in Lactating Dairy Cows. Front Vet Sci 2022; 9:911958. [PMID: 36032283 PMCID: PMC9403479 DOI: 10.3389/fvets.2022.911958] [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: 04/06/2022] [Accepted: 06/20/2022] [Indexed: 12/04/2022] Open
Abstract
Soybean peptides (SPs), a feed additive derived from soybean, exhibit nutritional function and biological activity in monogastric animals, but limited studies have been conducted in dairy cows. Our experiments were conducted to evaluate the effects of SPs on the nutrient degradability of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), and acid detergent fiber (ADF) in vitro and milk production, rumen fermentation and bacterial community, and blood parameters of dairy cows. For in vitro experiment, ruminal fluids were collected from three ruminal cannulated Holstein dairy cows. A total of three levels of SPs (0, 0.38, and 1.92 g/kg DM of SPs) were added to the total mixed ration (TMR). Nutrient degradability and fermentation fluid pH were determined at 24 and 48 h using 3.0 g samples of the substrate. Gas production after 48 h was recorded by an automated trace gas recording system using 0.5 g samples of the substrate. The results showed that DM, NDF, ADF (p < 0.01), and CP (p < 0.05) degradabilities were significantly increased at 1.92 g/kg DM of SPs at 24 h, and asymptotic gas production (p = 0.05) was increased at 48 h. For in vivo experiment, 110 lactating Holstein cows (209.7 ± 65.2 DIM; 37.2 ± 6.4 kg/d milk yield) were randomly assigned to 0 (control group, CON) or 50 g/head/day SPs (SP-supplemented group). Yields of milk (p < 0.05), milk protein (p < 0.05), and milk lactose (0.05 < p < 0.10) increased on SPs supplementation; however, the milk fat percentage decreased (p < 0.05). The concentrations of individual volatile fatty acids (VFAs) (p < 0.05) and superoxide dismutase (SOD) (p < 0.01) were also increased. Rumen bacterial diversity in SP-supplemented cows was higher (p < 0.05). The relative abundances of Rikenellaceae_RC9_gut_group, Butyrivibrio, Selenomonas, and Shuttleworthia were significantly increased and that of Coprococcus was decreased (p < 0.05). Our results showed that supplementing 1.92 g/kg DM of SPs could improve the nutrient degradability in vitro and 50 g/head/day of SPs could improve milk production and antioxidant ability of dairy cows. The rumen bacterial diversity was also enhanced by SP supplementation.
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Affiliation(s)
| | | | | | | | | | | | - Shengli Li
- State Key Laboratory of Animal Nutrition, Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control, College of Animal Science and Technology, China Agricultural University, Beijing, China
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Zhou Z, Yu S, Cui L, Shao K, Pang H, Wang Z, He N, Li S. Isomaltulose alleviates acute colitis via modulating gut microbiota and the Treg/Th17 balance in mice. Food Funct 2022; 13:8572-8584. [PMID: 35894244 DOI: 10.1039/d2fo01157c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Food-grade isomaltulose exhibits significant modulation of gut microbiota and its metabolites in healthy populations. This study further explored the preventive therapeutic effect and anti-colitis potential of isomaltulose on dextran sulfate sodium-induced colitis in mice. Our results suggested that isomaltulose played a significant role in preventing colon shortening, reducing intestinal epithelial destruction and inhibiting inflammatory cell infiltration. Meanwhile, the isomaltulose supplement greatly reduced the production of pro-inflammatory cytokines and restored the balance between T helper type 17 (Th17) cells and regulatory T (Treg) cells. Pathway enrichment analysis for differentially expressed genes (DEGs) also indicated that the anti-inflammatory effect of isomaltulose was closely related to intestinal immunity. Moreover, the disturbed gut microbiota in ulcerative colitis (UC) was partially restored after treatment with isomaltulose. These results suggest that isomaltulose is a promising therapeutic agent for the prevention and adjunctive treatment of UC by maintaining intestinal immune homeostasis and remodeling the gut microbiota.
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Affiliation(s)
- Zihan Zhou
- School of Basic Medicine, Qingdao Medical College, Qingdao University, Qingdao, 266071, China.
| | - Shengnan Yu
- School of Basic Medicine, Qingdao Medical College, Qingdao University, Qingdao, 266071, China.
| | - Luwen Cui
- School of Basic Medicine, Qingdao Medical College, Qingdao University, Qingdao, 266071, China.
| | - Kaidi Shao
- School of Basic Medicine, Qingdao Medical College, Qingdao University, Qingdao, 266071, China.
| | - Hao Pang
- School of Basic Medicine, Qingdao Medical College, Qingdao University, Qingdao, 266071, China.
| | - Zhipeng Wang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China.
| | - Ningning He
- School of Basic Medicine, Qingdao Medical College, Qingdao University, Qingdao, 266071, China.
| | - Shangyong Li
- School of Basic Medicine, Qingdao Medical College, Qingdao University, Qingdao, 266071, China.
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Cloning of Cold-Adapted Dextranase and Preparation of High Degree Polymerization Isomaltooligosaccharide. Catalysts 2022. [DOI: 10.3390/catal12070784] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Intestinal diseases are mainly caused by a decrease in the relative abundance of probiotics and an increase in the number of pathogenic bacteria due to dysbiosis of the intestinal flora. High degree polymerization isomaltooligosaccharide (IMO) can promote probiotic metabolism and proliferation. In this study, the dextranase (PsDex1711) gene of marine bacterial Pseudarthrobacter sp. RN22 was cloned and expressed in Escherichia coli BL21 (DE3). The optimal pH and temperature of the dextranase were 6.0 and 30 °C, respectively, showing the highest stability at 20 °C. The dextran T70 could be hydrolyzed to produce IMO3, IMO4, IMO5, and IMO6 with a high degree of polymerization. The hydrolysate of 1 mg/mL could significantly promote the growth of Lactobacillus and Bifidobacterium after 12 h culture and the formation of biofilms by 58.2%. The hydrolysates could promote the proliferation of probiotics. Furthermore, the IC50 of scavenging rate of DPPH, hydroxyl radical, and superoxide anion was less than 20 mg/mL. This study provides a crucial theoretical basis for the application of dextranase such as pharmaceutical and food industries.
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Isomaltulose: From origin to application and its beneficial properties – A bibliometric approach. Food Res Int 2022; 155:111061. [DOI: 10.1016/j.foodres.2022.111061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 02/19/2022] [Accepted: 02/22/2022] [Indexed: 01/03/2023]
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Dietary Complex and Slow Digestive Carbohydrates Promote Bone Mass and Improve Bone Microarchitecture during Catch-Up Growth in Rats. Nutrients 2022; 14:nu14061303. [PMID: 35334960 PMCID: PMC8951765 DOI: 10.3390/nu14061303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/14/2022] [Accepted: 03/17/2022] [Indexed: 02/06/2023] Open
Abstract
Catch-up growth is a process that promotes weight and height gains to recover normal growth patterns after a transient period of growth inhibition. Accelerated infant growth is associated with reduced bone mass and quality characterized by poor bone mineral density (BMD), content (BMC), and impaired microarchitecture. The present study evaluated the effects of a diet containing slow (SDC) or rapid (RDC) digestible carbohydrates on bone quality parameters during the catch-up growth period in a model of diet-induced stunted rats. The food restriction period negatively impacted BMD, BMC, and microarchitecture of appendicular and axial bones. The SDC diet was shown to improve BMD and BMC of appendicular and axial bones after a four-week refeeding period in comparison with the RDC diet. In the same line, the micro-CT analysis revealed that the trabecular microarchitecture of tibiae and vertebrae was positively impacted by the dietary intervention with SDC compared to RDC. Furthermore, features of the cortical microstructure of vertebra bones were also improved in the SDC group animals. Similarly, animals allocated to the SDC diet displayed modest improvements in growth plate thickness, surface, and volume compared to the RDC group. Diets containing the described SDC blend might contribute to an adequate bone formation during catch-up growth thus increasing peak bone mass, which could be linked to reduced fracture risk later in life in individuals undergoing transient undernutrition during early life.
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Xie X, Liao J, Ai Y, Gao J, Zhao J, Qu F, Xu C, Zhang Z, Wen W, Cui H, Wang H. Pi-Dan-Jian-Qing Decoction Ameliorates Type 2 Diabetes Mellitus Through Regulating the Gut Microbiota and Serum Metabolism. Front Cell Infect Microbiol 2021; 11:748872. [PMID: 34938667 PMCID: PMC8685325 DOI: 10.3389/fcimb.2021.748872] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 11/03/2021] [Indexed: 01/01/2023] Open
Abstract
Pi-Dan-Jian-Qing decoction (PDJQ) can been used in the treatment of type 2 diabetes mellitus (T2DM) in clinic. However, the protective mechanisms of PDJQ on T2DM remain unknown. Recent studies have shown that the changes in gut microbiota could affect the host metabolism and contribute to progression of T2DM. In this study, we first investigated the therapeutic effects of PDJQ on T2DM rats. 16S rRNA sequencing and untargeted metabolomics analyses were used to investigate the mechanisms of action of PDJQ in the treatment of T2DM. Our results showed that PDJQ treatment could improve the hyperglycemia, hyperlipidemia, insulin resistance (IR) and pathological changes of liver, pancreas, kidney, and colon in T2DM rats. PDJQ could also decrease the levels of pro-inflammatory cytokines and inhibit the oxidative stress. 16S rRNA sequencing showed that PDJQ could decrease the Firmicutes/Bacteroidetes (F to B) ratio at the phylum level. At the genus level, PDJQ could increase the relative abundances of Lactobacillus, Blautia, Bacteroides, Desulfovibrio and Akkermansia and decrease the relative abundance of Prevotella. Serum untargeted metabolomics analysis showed that PDJQ could regulate tryptophan metabolism, histidine metabolism, tricarboxylic acid (TCA) cycle, phenylalanine, tyrosine and tryptophan biosynthesis and tyrosine metabolism pathways. Correlation analysis indicated that the modulatory effects of PDJQ on the tryptophan metabolism, histidine metabolism and TCA cycle pathways were related to alterations in the abundance of Lactobacillus, Bacteroides and Akkermansia. In conclusion, our study revealed the various ameliorative effects of PDJQ on T2DM, including improving the liver and kidney functions and alleviating the hyperglycemia, hyperlipidemia, IR, pathological changes, oxidative stress and inflammatory response. The mechanisms of PDJQ on T2DM are likely linked to an improvement in the dysbiosis of gut microbiota and modulation of tryptophan metabolism, histamine metabolism, and the TCA cycle.
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Affiliation(s)
- Xuehua Xie
- First College of Clinical Medicine, Nanjing University of Traditional Chinese Medicine, Jiangsu, China.,Department of Endocrinology, Yunnan Provincial Hospital of Chinese Medicine, Yunnan, China
| | - Jiabao Liao
- Department of Emergency, Jiaxing Hospital of Traditional Chinese Medicine, Zhejiang, China.,Jiaxing Key Laboratory of Diabetic Angiopathy Research, Jiaxing Hospital of Traditional Chinese Medicine, Zhejiang, China
| | - Yuanliang Ai
- Department of Orthopedics, Kunming Municipal Hospital of Traditional Chinese Medicine, Yunnan, China
| | - Jinmei Gao
- Department of Rehabilitation, Fujian People's Hospital of Traditional Chinese Medicine, Fujian, China
| | - Jie Zhao
- Department of Endocrinology, Yunnan Provincial Hospital of Chinese Medicine, Yunnan, China
| | - Fei Qu
- Department of Emergency, Jiaxing Hospital of Traditional Chinese Medicine, Zhejiang, China
| | - Chao Xu
- Department of Endocrinology, Yunnan Provincial Hospital of Chinese Medicine, Yunnan, China
| | - Zhaiyi Zhang
- College of Integrated Chinese and Western Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Weibo Wen
- Department of Endocrinology, Yunnan Provincial Hospital of Chinese Medicine, Yunnan, China
| | - Huantian Cui
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, Shandong, China
| | - Hongwu Wang
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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15
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Zhou J, Sun S, Luan S, Xiao X, Yang Y, Mao C, Chen L, Zeng X, Zhang Y, Yuan Y. Gut Microbiota for Esophageal Cancer: Role in Carcinogenesis and Clinical Implications. Front Oncol 2021; 11:717242. [PMID: 34733778 PMCID: PMC8558403 DOI: 10.3389/fonc.2021.717242] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 09/24/2021] [Indexed: 02/05/2023] Open
Abstract
Esophageal cancer (EC) is a common malignant tumor of the upper digestive tract. The microbiota in the digestive tract epithelium comprises a large number of microorganisms that adapt to the immune defense and interact with the host to form symbiotic networks, which affect many physiological processes such as metabolism, tissue development, and immune response. Reports indicate that there are microbial compositional changes in patients with EC, which provides an important opportunity to advance clinical applications based on findings on the gut microbiota. For example, microbiota detection can be used as a biomarker for screening and prognosis, and microorganism levels can be adjusted to treat cancer and decrease the adverse effects of treatment. This review aims to provide an outline of the gut microbiota in esophageal neoplasia, including the mechanisms involved in microbiota-related carcinogenesis and the prospect of utilizing the microbiota as EC biomarkers and treatment targets. These findings have important implications for translating the use of gut microbiota in clinical applications.
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Affiliation(s)
- Jianfeng Zhou
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Shangwei Sun
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Siyuan Luan
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Xin Xiao
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Yushang Yang
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Chengyi Mao
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Longqi Chen
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoxi Zeng
- West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
| | - Yonggang Zhang
- Department of Periodical Press, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China.,Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Yong Yuan
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China
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