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De Doncker M, Vleminckx S, Franceus J, Vercauteren R, Desmet T. Converting Bulk Sugars into Functional Fibers: Discovery and Application of a Thermostable β-1,3-Oligoglucan Phosphorylase. J Agric Food Chem 2024. [PMID: 38659290 DOI: 10.1021/acs.jafc.4c01990] [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] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Despite their broad application potential, the widespread use of β-1,3-glucans has been hampered by the high cost and heterogeneity associated with current production methods. To address this challenge, scalable and economically viable processes are needed for the production of β-1,3-glucans with tailorable molecular mass distributions. Glycoside phosphorylases have shown to be promising catalysts for the bottom-up synthesis of β-1,3-(oligo)glucans since they combine strict regioselectivity with a cheap donor substrate (i.e., α-glucose 1-phosphate). However, the need for an expensive priming substrate (e.g., laminaribiose) and the tendency to produce shorter oligosaccharides still form major bottlenecks. Here, we report the discovery and application of a thermostable β-1,3-oligoglucan phosphorylase originating from Anaerolinea thermophila (AtβOGP). This enzyme combines a superior catalytic efficiency toward glucose as a priming substrate, high thermostability, and the ability to synthesize high molecular mass β-1,3-glucans up to DP 75. Coupling of AtβOGP with a thermostable variant of Bifidobacterium adolescentis sucrose phosphorylase enabled the efficient production of tailorable β-1,3-(oligo)glucans from sucrose, with a near-complete conversion of >99 mol %. This cost-efficient process for the conversion of renewable bulk sugar into β-1,3-(oligo)glucans should facilitate the widespread application of these versatile functional fibers across various industries.
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Affiliation(s)
- Marc De Doncker
- Department of Biotechnology, Centre for Synthetic Biology (CSB), Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Sofie Vleminckx
- Department of Biotechnology, Centre for Synthetic Biology (CSB), Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Jorick Franceus
- Department of Biotechnology, Centre for Synthetic Biology (CSB), Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Ronny Vercauteren
- Cargill R&D Centre Europe BV, Havenstraat 84, B-1800 Vilvoorde, Belgium
| | - Tom Desmet
- Department of Biotechnology, Centre for Synthetic Biology (CSB), Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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Paesani C, Lammers TCGL, Sciarini LS, Moiraghi M, Pérez GT, Fabi JP. Effect of chemical, thermal, and enzymatic processing of wheat bran on the solubilization, technological and biological properties of non-starch polysaccharides. Carbohydr Polym 2024; 328:121747. [PMID: 38220355 DOI: 10.1016/j.carbpol.2023.121747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/20/2023] [Accepted: 12/26/2023] [Indexed: 01/16/2024]
Abstract
Wheat bran is a low-cost by-product with significant nutritional value, but it is primarily utilized in animal feed applications. This study sought to investigate chemical methodologies for modifying the wheat bran's structure, enhancing non-starch polysaccharides solubility in water, and assessing alterations in functional and biological attributes. Chemical modifications were conducted under aqueous, alkaline, acid, and oxidizing conditions. Parameters such as yield, monosaccharides, arabinoxylans, β-glucan and phenolic content, molecular weight, functional properties, and prebiotic in vitro capacity were examined. The samples exhibited higher yields than the control, particularly in alkaline and acidic extractions. Notably, all soluble polysaccharide fractions (SPF) displayed a reduced molecular weight (<25KDa). β-glucan contents were raised in alkaline and acid extractions compared to the control, despite only in alkaline extraction were observed increase in arabinoxylans, confirmed by enzymatic-driven linkage analyses. Phenolic compounds and their antioxidant activities were low across all SPF. The samples showed heightened solubility, minimal foaming, and reduced water absorption properties. An alkaline extraction demonstrated a potential high prebiotic effect. Most samples showed positive relative growth and prebiotic activity for Lactobacillus and Bifidobacterium. This study suggests that an alkaline extraction of wheat by-product could enhance its value by increasing β-glucan content, arabinoxylans release, and prebiotic potential.
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Affiliation(s)
- Candela Paesani
- University of São Paulo, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, Av. Prof. Lineu Prestes 580, São Paulo, SP, Brazil; ICYTA (Instituto de Ciencia y Tecnología de los alimentos Córdoba), UNC-CONICET, Av. Filloy s/n, Cuidad Universitaria, Córdoba, Argentina.
| | - Tamy C G L Lammers
- University of São Paulo, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, Av. Prof. Lineu Prestes 580, São Paulo, SP, Brazil
| | - Lorena S Sciarini
- ICYTA (Instituto de Ciencia y Tecnología de los alimentos Córdoba), UNC-CONICET, Av. Filloy s/n, Cuidad Universitaria, Córdoba, Argentina.
| | - Malena Moiraghi
- ICYTA (Instituto de Ciencia y Tecnología de los alimentos Córdoba), UNC-CONICET, Av. Filloy s/n, Cuidad Universitaria, Córdoba, Argentina.
| | - Gabriela T Pérez
- ICYTA (Instituto de Ciencia y Tecnología de los alimentos Córdoba), UNC-CONICET, Av. Filloy s/n, Cuidad Universitaria, Córdoba, Argentina.
| | - João Paulo Fabi
- University of São Paulo, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, Av. Prof. Lineu Prestes 580, São Paulo, SP, Brazil; Food Research Center (FoRC), CEPID-FAPESP, Research Innovation and Dissemination Centers, São Paulo Research Foundation, Rua do Lago, 250, São Paulo, SP, Brazil; Food and Nutrition Research Center (NAPAN), University of São Paulo, São Paulo, SP, Brazil.
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Jaeger JW, Brandt A, Gui W, Yergaliyev T, Hernández-Arriaga A, Muthu MM, Edlund K, Elashy A, Molinaro A, Möckel D, Sarges J, Halibasic E, Trauner M, Kahles F, Rolle-Kampczyk U, Hengstler J, Schneider CV, Lammers T, Marschall HU, von Bergen M, Camarinha-Silva A, Bergheim I, Trautwein C, Schneider KM. Microbiota modulation by dietary oat beta-glucan prevents steatotic liver disease progression. JHEP Rep 2024; 6:100987. [PMID: 38328439 PMCID: PMC10844974 DOI: 10.1016/j.jhepr.2023.100987] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 11/16/2023] [Accepted: 12/06/2023] [Indexed: 02/09/2024] Open
Abstract
Background & Aims Changes in gut microbiota in metabolic dysfunction-associated steatotic liver disease (MASLD) are important drivers of disease progression towards fibrosis. Therefore, reversing microbial alterations could ameliorate MASLD progression. Oat beta-glucan, a non-digestible polysaccharide, has shown promising therapeutic effects on hyperlipidemia associated with MASLD, but its impact on gut microbiota and most importantly MASLD-related fibrosis remains unknown. Methods We performed detailed metabolic phenotyping, including assessments of body composition, glucose tolerance, and lipid metabolism, as well as comprehensive characterization of the gut-liver axis in a western-style diet (WSD)-induced model of MASLD and assessed the effect of a beta-glucan intervention on early and advanced liver disease. Gut microbiota were modulated using broad-spectrum antibiotic treatment. Results Oat beta-glucan supplementation did not affect WSD-induced body weight gain or glucose intolerance and the metabolic phenotype remained largely unaffected. Interestingly, oat beta-glucan dampened MASLD-related inflammation, which was associated with significantly reduced monocyte-derived macrophage infiltration and fibroinflammatory gene expression, as well as strongly reduced fibrosis development. Mechanistically, this protective effect was not mediated by changes in bile acid composition or signaling, but was dependent on gut microbiota and was lost upon broad-spectrum antibiotic treatment. Specifically, oat beta-glucan partially reversed unfavorable changes in gut microbiota, resulting in an expansion of protective taxa, including Ruminococcus, and Lactobacillus followed by reduced translocation of Toll-like receptor ligands. Conclusions Our findings identify oat beta-glucan as a highly efficacious food supplement that dampens inflammation and fibrosis development in diet-induced MASLD. These results, along with its favorable dietary profile, suggest that it may be a cost-effective and well-tolerated approach to preventing MASLD progression and should be assessed in clinical studies. Impact and Implications Herein, we investigated the effect of oat beta-glucan on the gut-liver axis and fibrosis development in a mouse model of metabolic dysfunction-associated steatotic liver disease (MASLD). Beta-glucan significantly reduced inflammation and fibrosis in the liver, which was associated with favorable shifts in gut microbiota that protected against bacterial translocation and activation of fibroinflammatory pathways. Together, oat beta-glucan may be a cost-effective and well-tolerated approach to prevent MASLD progression and should be assessed in clinical studies.
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Affiliation(s)
- Julius W. Jaeger
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Annette Brandt
- Department of Nutritional Sciences, University of Vienna, Vienna, Austria
| | - Wenfang Gui
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Timur Yergaliyev
- Department Microbial Ecology of Livestock at the Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Angélica Hernández-Arriaga
- Department Microbial Ecology of Livestock at the Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Mukil Marutha Muthu
- Department Microbial Ecology of Livestock at the Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Karolina Edlund
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
| | - Ahmed Elashy
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Antonio Molinaro
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine and Sahlgrenska Center for Cardiovascular and Metabolic Research, University of Gothenburg, Gothenburg, Sweden
- Norwegian PSC Research Center, Department of Transplantation Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Diana Möckel
- Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University, Aachen, Germany
| | - Jan Sarges
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Emina Halibasic
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Michael Trauner
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Florian Kahles
- Department of Medicine I, University Hospital RWTH Aachen, Aachen, Germany
| | - Ulrike Rolle-Kampczyk
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Jan Hengstler
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
| | | | - Twan Lammers
- Norwegian PSC Research Center, Department of Transplantation Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Hanns-Ulrich Marschall
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine and Sahlgrenska Center for Cardiovascular and Metabolic Research, University of Gothenburg, Gothenburg, Sweden
| | - Martin von Bergen
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Amélia Camarinha-Silva
- Department Microbial Ecology of Livestock at the Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Ina Bergheim
- Department of Nutritional Sciences, University of Vienna, Vienna, Austria
| | - Christian Trautwein
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
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Jo SH, Jo KA, Park SY, Kim JY. Unveiling immunomodulatory effects of Euglena gracilis in immunosuppressed mice: Transcriptome and pathway analysis. J Microbiol Biotechnol 2024; 34:1-10. [PMID: 38379288 DOI: 10.4014/jmb.2401.01006] [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: 01/08/2024] [Revised: 01/31/2024] [Accepted: 02/03/2024] [Indexed: 02/22/2024]
Abstract
The immunomodulatory effects of Euglena gracilis (Euglena) and its bioactive component, β-1,3-glucan (paramylon), have been clarified through various studies. However, the detailed mechanisms of the immune regulation remain to be elucidated. This study was designed not only to investigate the immunomodulatory effects but also to determine the genetic mechanisms of Euglena and β-glucan in cyclophosphamide (CCP)-induced immunosuppressed mice. The animals were orally administered saline, Euglena (800 mg/kg B.W.) or β-glucan (400 mg/kg B.W.) for 19 days, and CCP (80 mg/kg B.W.) was subsequently administered to induce immunosuppression in the mice. The mice exhibited significant decreases in body weight, organ weight, and the spleen index. However, there were significant improvements in the spleen weight and the spleen index in CCP-induced mice after the oral administration of Euglena and β-glucan. Transcriptome analysis of the splenocytes revealed immune-related differentially expressed genes (DEGs) regulated in the Euglena - and β-glucan-treated groups. Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses indicated that pathways related with interleukin (IL)-17 and cAMP play significant roles in regulating T cells, B cells, and inflammatory cytokines. Additionally, Ptgs2, a major inflammatory factor, was exclusively expressed in the Euglena-treated group, suggesting that Euglena's beneficial components, such as carotenoids, could regulate these genes by influencing immune lymphocytes and inflammatory cytokines in CCP-induced mice. This study validated the immunomodulatory effects of Euglena and highlighted its underlying mechanisms, suggesting a positive contribution to the determination of phenotypes associated with immune-related diseases and the research and development of immunotherapies.
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Affiliation(s)
- Seon Ha Jo
- Department of Food Science and Biotechnology, Seoul National University of Science and Technology; 232, Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea
| | - Kyeong Ah Jo
- Department of Food Science and Biotechnology, Seoul National University of Science and Technology; 232, Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea
| | - Soo-Yeon Park
- Department of Food Science and Biotechnology, Seoul National University of Science and Technology; 232, Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea
| | - Ji Yeon Kim
- Department of Food Science and Biotechnology, Seoul National University of Science and Technology; 232, Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea
- Department of Nano Bio Engineering, Seoul National University of Science and Technology; 232, Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea
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de Carvalho RH, Callegari MA, Dias CP, Kirwan S, da Costa MCR, da Silva CA. Euglena gracilis β-Glucans (1,3): Enriching Colostrum of Sow for Enhanced Piglet Immunity. Animals (Basel) 2023; 13:3490. [PMID: 38003108 PMCID: PMC10668842 DOI: 10.3390/ani13223490] [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: 09/18/2023] [Revised: 11/07/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
The effects of supplementing the diet of sows with βG-(1,3) derived from Euglena gracilis algae were assessed regarding quality and amount of colostrum as well as performance of piglets. A total of 120 sows (first (nulliparous) to sixth parity (multiparous)) from D85 of gestation until weaning were divided into two groups: the control diet group (n = 60) and the βG-(1,3) diet group (n = 60). Sows receiving βG-(1,3) exhibited an average increase of 870 g (24.9%) in colostrum production, leading to a 25.17% higher intake of colostrum by piglets. Furthermore, piglets in the βG-(1,3) group showed significantly superior weight gain of 34 g (50%) compared to the control group 18 h after birth (p < 0.05). Sows fed with βG-(1,3) produced colostrum with significantly higher concentrations of IgG (5.914 mg/mL, 16.16%) and IgM (0.378 mg/mL, 16.29%) than the control group (p < 0.05). Similarly, serum concentrations of IgG (13.86 mg/mL, 51.25%), IgA (17.16 mg/mL, 120.19%), and IgM (13.23 mg/mL, 144.78%) were significantly higher in sows fed with βG-(1,3) than in the control group (p < 0.05). Supplementing sows with βG-(1,3) derived from the Euglena gracilis algae resulted in increased colostrum production and consumption, along with greater weight gain in piglets during the first 18 h after birth. Additionally, both the colostrum produced by the sows and the blood serum of the piglets exhibited higher concentrations of immunoglobulins.
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Affiliation(s)
- Rafael Humberto de Carvalho
- Department of Zootechnology, Center of Agrarian Sciences, State University of Londrina, Londrina 86057970, PR, Brazil;
- Akei Animal Research, Fartura 18870970, SP, Brazil; (M.A.C.); (C.P.D.)
| | | | | | | | | | - Caio Abércio da Silva
- Department of Zootechnology, Center of Agrarian Sciences, State University of Londrina, Londrina 86057970, PR, Brazil;
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Lacasa M, Alegre-Martin J, Sentañes RS, Varela-Sende L, Jurek J, Castro-Marrero J. Yeast Beta-Glucan Supplementation with Multivitamins Attenuates Cognitive Impairments in Individuals with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: A Randomized, Double-Blind, Placebo-Controlled Trial. Nutrients 2023; 15:4504. [PMID: 37960157 PMCID: PMC10647745 DOI: 10.3390/nu15214504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
This research aimed to examine the potential alleviative effects of beta-glucan administration on fatigue, unrefreshing sleep, anxiety/depression symptoms and health-related quality of life in ME/CFS. A 36-week unicenter, randomized, double-blind, placebo-controlled trial was conducted in 65 ME/CFS patients, who were randomly allocated to one of two arms to receive four capsules each one of 250 mg beta-glucan, 3.75 µg vitamin D3, 1.05 mg vitamin B6, and 7.5 mg zinc (n = 35), or matching placebo including only microcrystalline cellulose as an excipient (n = 30) once daily. The findings showed that the beta-glucan supplementation significantly improved cognitive fatigue (assessed with FIS-40 scores) after the 36-week treatment compared to the baseline (p = 0.0338). Taken together, this study presents the novel finding that yeast-derived beta-glucan may alleviate cognitive fatigue symptoms in ME/CFS. Thus, it offers valuable scientific insights into the potential use of yeast beta-glucan as a nutritional supplement and/or functional food to prevent or reduce cognitive dysfunction in patients with ME/CFS. Further interventions are warranted to validate these findings and also to delve deeper into the possible immunometabolic pathomechanisms of beta-glucans in ME/CFS.
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Affiliation(s)
- Marcos Lacasa
- E-Health Center, Universitat Oberta de Catalunya, 08018 Barcelona, Spain;
| | - Jose Alegre-Martin
- Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Research Unit, Division of Rheumatology, Vall d´Hebron University Hospital Research Institute, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain; (J.A.-M.); (R.S.S.); (J.J.)
| | - Ramon Sanmartin Sentañes
- Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Research Unit, Division of Rheumatology, Vall d´Hebron University Hospital Research Institute, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain; (J.A.-M.); (R.S.S.); (J.J.)
| | - Luisa Varela-Sende
- Clinical Research Department, VITAE Health Innovation, Montmeló, 08160 Barcelona, Spain;
| | - Joanna Jurek
- Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Research Unit, Division of Rheumatology, Vall d´Hebron University Hospital Research Institute, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain; (J.A.-M.); (R.S.S.); (J.J.)
| | - Jesus Castro-Marrero
- Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Research Unit, Division of Rheumatology, Vall d´Hebron University Hospital Research Institute, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain; (J.A.-M.); (R.S.S.); (J.J.)
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Sirotkin AV. The Effect of Dietary Oat Consumption and Its Constituents on Fat Storage and Obesity. Physiol Res 2023; 72:S157-S163. [PMID: 37565419 PMCID: PMC10660577 DOI: 10.33549/physiolres.934957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 11/23/2022] [Indexed: 12/01/2023] Open
Abstract
This review is to summarize and analyze the currently available knowledge concerning the action of oat (Avena sativa L.) consumption on obesity, as well as possible constituents and extra- and intracellular mediators responsible for its anti-obesity effect. The oat constituents could reduce fat storage via several mediatory mechanisms - brain centers regulating appetite, gastrointestinal functions, gut bacteria, fat synthesis and metabolism and maybe via changes in oxidative processes, steroid hormones receptors and adipose tissue vascularization. Several oat constituents (starch, fiber and beta-glucan) could have anti-obesity properties, whilst one oat constituent (starch or fiber) could affect fat storage via several mechanisms of action.
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Affiliation(s)
- A V Sirotkin
- Department of Zoology and Anthropology, Constantine the Philosopher University in Nitra, Nitra, Slovak Republic.
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Park HJ, Lee SW, Park YH, Kim TC, Lee S, Lee S, Van Kaer L, Hong S. In Vivo Zymosan Treatment Induces IL15-Secreting Macrophages and KLRG1-Expressing NK Cells in Mice. Molecules 2023; 28:5779. [PMID: 37570749 PMCID: PMC10421142 DOI: 10.3390/molecules28155779] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 06/29/2023] [Revised: 07/26/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023] Open
Abstract
Beta-glucan (β-glucan) is a natural polysaccharide produced by fungi, bacteria, and plants. Although it has been reported that β-glucan enhances innate immune memory responses, it is unclear whether different types of β-glucans display similar immune effects. To address this issue, we employed zymosan (β-1,3-glycosidic linkage) and pustulan (β-1,6-glycosidic linkage) to investigate their in vivo effects on innate memory immune responses. We examined the changes of innate memory-related markers in macrophages and natural killer (NK) cells, two immune cell types that display innate memory characteristics, at two different time points (16 h and 7 days) after β-glucan stimulation. We found that short-term (16 h) zymosan treatment significantly induced macrophages to upregulate IL15 production and increased surface IL15Rα expression on NK cells. In addition, long-term (7 days) zymosan treatment significantly induced macrophages to upregulate the expression of innate memory-related markers (e.g., TNFα, HIF1α, and mTOR) and induced NK cells to express enhanced levels of KLRG1, known as an innate memory-like marker. Our results provide support that zymosan can be an effective adjuvant to promote innate memory immune responses, providing a bridge between innate and adaptive immune cells to enhance various immune responses such as those directed against tumors.
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Affiliation(s)
- Hyun Jung Park
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul 05006, Republic of Korea; (H.J.P.); (Y.H.P.); (T.-C.K.); (S.L.); (S.L.)
| | - Sung Won Lee
- Department of Biomedical Laboratory Science, College of Health and Biomedical Services, Sangji University, Wonju 26339, Republic of Korea;
| | - Yun Hoo Park
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul 05006, Republic of Korea; (H.J.P.); (Y.H.P.); (T.-C.K.); (S.L.); (S.L.)
| | - Tae-Cheol Kim
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul 05006, Republic of Korea; (H.J.P.); (Y.H.P.); (T.-C.K.); (S.L.); (S.L.)
| | - Sujin Lee
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul 05006, Republic of Korea; (H.J.P.); (Y.H.P.); (T.-C.K.); (S.L.); (S.L.)
| | - Seyeong Lee
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul 05006, Republic of Korea; (H.J.P.); (Y.H.P.); (T.-C.K.); (S.L.); (S.L.)
| | - Luc Van Kaer
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA;
| | - Seokmann Hong
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul 05006, Republic of Korea; (H.J.P.); (Y.H.P.); (T.-C.K.); (S.L.); (S.L.)
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9
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Raj P, Sayfee K, Yu L, Sabra A, Wijekoon C, Malunga L, Thandapilly SJ, Netticadan T. Oat Beta-Glucan Alone and in Combination with Hydrochlorothiazide Lowers High Blood Pressure in Male but Not Female Spontaneously Hypertensive Rats. Nutrients 2023; 15:3180. [PMID: 37513599 PMCID: PMC10385299 DOI: 10.3390/nu15143180] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 07/02/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023] Open
Abstract
Oats are considered a functional food due to the beneficial health effects associated with their consumption and are suitable to be explored for their ability to prevent or manage chronic disease, such as hypertension. Here, we examined the cardiovascular benefits of an oat beta-glucan extract in male and female spontaneously hypertensive rats (SHRs) to unravel its sex-specific roles when used with an anti-hypertensive medication, hydrochlorothiazide. Five-week-old male and female SHRs and Wistar-Kyoto (WKY) rats were treated with oat beta-glucan and hydrochlorothiazide for 15 weeks. Twenty-week-old male and female SHRs showed high blood pressure (BP), cardiac remodeling, and cardiac dysfunction. These animals also had significantly increased levels of malondialdehyde (MDA), angiotensin II, and norepinephrine. Treatments with beta-glucan and hydrochlorothiazide were able to differentially prevent high BP, cardiac dysfunction, and alterations in malondialdehyde (MDA), angiotensin II, and norepinephrine in 20-week-old male and female SHRs. To conclude, beta-glucan alone and in combination with hydrochlorothiazide may be a promising a strategy for managing hypertension and related cardiac complications.
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Affiliation(s)
- Pema Raj
- St. Boniface Hospital Research Centre, Winnipeg, MB R2H 2A6, Canada
| | - Karen Sayfee
- St. Boniface Hospital Research Centre, Winnipeg, MB R2H 2A6, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, Winnipeg, MB R2H 2A6, Canada
| | - Liping Yu
- St. Boniface Hospital Research Centre, Winnipeg, MB R2H 2A6, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, Winnipeg, MB R2H 2A6, Canada
- Agriculture and Agri-Food Canada, Winnipeg, MB R2H 2A6, Canada
| | - Ali Sabra
- St. Boniface Hospital Research Centre, Winnipeg, MB R2H 2A6, Canada
- Agriculture and Agri-Food Canada, Winnipeg, MB R2H 2A6, Canada
| | - Champa Wijekoon
- St. Boniface Hospital Research Centre, Winnipeg, MB R2H 2A6, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, Winnipeg, MB R2H 2A6, Canada
- Agriculture and Agri-Food Canada, Winnipeg, MB R2H 2A6, Canada
- Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R2H 2A6, Canada
| | - Lovemore Malunga
- Agriculture and Agri-Food Canada, Winnipeg, MB R2H 2A6, Canada
- Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R2H 2A6, Canada
- Richardson Center for Food Technology and Research, Winnipeg, MB R2H 2A6, Canada
| | - Sijo Joseph Thandapilly
- Agriculture and Agri-Food Canada, Winnipeg, MB R2H 2A6, Canada
- Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R2H 2A6, Canada
- Richardson Center for Food Technology and Research, Winnipeg, MB R2H 2A6, Canada
| | - Thomas Netticadan
- St. Boniface Hospital Research Centre, Winnipeg, MB R2H 2A6, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, Winnipeg, MB R2H 2A6, Canada
- Agriculture and Agri-Food Canada, Winnipeg, MB R2H 2A6, Canada
- Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R2H 2A6, Canada
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, MB R2H 2A6, Canada
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10
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Furuichi T, Abe D, Uchikawa T, Nagasaki T, Kanou M, Kasuga J, Matsumoto S, Tsurunaga Y. Comparison of Nutritional Composition and Antioxidant Properties of Pulverized and Unutilized Portions of Waxy Barley. Foods 2023; 12:2639. [PMID: 37509731 PMCID: PMC10378559 DOI: 10.3390/foods12142639] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 06/24/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
To promote the use of waxy barley bran, an underutilized resource, samples of waxy barley were divided into three parts: polished waxy barley powder (PWBP), inner bran layer powder (IBLP), and outer bran layer powder (OBLP). The color and appearance, general properties, minerals, vitamins, β-glucan, antioxidant properties, and aroma of each part were compared. In terms of appearance and color, IBLP and OBLP appeared more yellow than PWBP; general components that were more abundant in IBLP and OBLP compared with PWBP were protein, fat, and ash. IBLP and OBLP had characteristically high values of Mg and Zn, monounsaturated and polyunsaturated fatty acids, vitamin B1, total polyphenol content, H-ORAC, and DPPH. In particular, the vitamin B1 content of OBLP was approximately 10 times higher than that of PWBP, and Mg and Zn content was more than five times higher than in PWBP. The β-glucan content of IBLP and OBLP was lower than that of PWBP, but relatively high. GC-MS analysis revealed that hexanal was the aroma component common to all three samples, and the peak areas were in the order of PWBP > OBLP > IBLP.
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Affiliation(s)
- Tsugumi Furuichi
- Department of Living Science, Food Science and Nutrition, Tottori College, Tottori 682-8555, Japan
| | - Daigo Abe
- Western Region Agricultural Research Center, National Agriculture and Food Research Organization, Kagawa 765-8508, Japan
| | - Takuya Uchikawa
- Tottori Institute of Industrial Technology, Tottori 684-0041, Japan
| | | | - Mina Kanou
- Graduate School of Human and Social Sciences, Shimane University, Shimane 690-8504, Japan
| | - Junko Kasuga
- Faculty of Life and Environmental Science, Shimane University, Shimane 690-8504, Japan
| | - Shingo Matsumoto
- Faculty of Life and Environmental Science, Shimane University, Shimane 690-8504, Japan
| | - Yoko Tsurunaga
- Faculty of Human Science, Shimane University, Shimane 690-8504, Japan
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11
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Yang L, Chaves L, Kutscher HL, Karki S, Tamblin M, Kenney P, Reynolds JL. An immunoregulator nanomedicine approach for the treatment of tuberculosis. Front Bioeng Biotechnol 2023; 11:1095926. [PMID: 37304141 PMCID: PMC10249870 DOI: 10.3389/fbioe.2023.1095926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 05/12/2023] [Indexed: 06/13/2023] Open
Abstract
Introduction: A nanoparticle composed of a poly (lactic-co-glycolic acid) (PLGA) core and a chitosan (CS) shell with surface-adsorbed 1,3 β-glucan (β-glucan) was synthesized. The exposure response of CS-PLGA nanoparticles (0.1 mg/mL) with surface-bound β-glucan at 0, 5, 10, 15, 20, or 25 ng or free β-glucan at 5, 10, 15, 20, or 25 ng/mL in macrophage in vitro and in vivo was investigated. Results: In vitro studies demonstrate that gene expression for IL-1β, IL-6, and TNFα increased at 10 and 15 ng surface-bound β-glucan on CS-PLGA nanoparticles (0.1 mg/mL) and at 20 and 25 ng/mL of free β-glucan both at 24 h and 48 h. Secretion of TNFα protein and ROS production increased at 5, 10, 15, and 20 ng surface-bound β-glucan on CS-PLGA nanoparticles and at 20 and 25 ng/mL of free β-glucan at 24 h. Laminarin, a Dectin-1 antagonist, prevented the increase in cytokine gene expression induced by CS-PLGA nanoparticles with surface-bound β-glucan at 10 and 15 ng, indicating a Dectin-1 receptor mechanism. Efficacy studies showed a significant reduction in intracellular accumulation of mycobacterium tuberculosis (Mtb) in monocyte-derived macrophages (MDM) incubated with on CS-PLGA (0.1 mg/ml) nanoparticles with 5, 10, and 15 ng surface-bound β-glucan or with 10 and 15 ng/mL of free β-glucan. β-glucan-CS-PLGA nanoparticles inhibited intracellular Mtb growth more than free β-glucan alone supporting the role of β-glucan-CS-PLGA nanoparticles as stronger adjuvants than free β-glucan. In vivo studies demonstrate that oropharyngeal aspiration (OPA) of CS-PLGA nanoparticles with nanogram concentrations of surface-bound β-glucan or free β-glucan increased TNFα gene expression in alveolar macrophages and TNFα protein secretion in bronchoalveolar lavage supernatants. Discussion: Data also demonstrate no damage to the alveolar epithelium or changes in the murine sepsis score following exposure to β-glucan-CS-PLGA nanoparticles only, indicating safety and feasibility of this nanoparticle adjuvant platform to mice by OPA.
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Affiliation(s)
- Luona Yang
- Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, United States
| | - Lee Chaves
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, United States
| | - Hilliard L. Kutscher
- Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, United States
| | - Shanta Karki
- Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, United States
| | - Maria Tamblin
- Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, United States
| | - Patrick Kenney
- Department of Pediatrics, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, United States
| | - Jessica L. Reynolds
- Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, United States
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12
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Rioux-Labrecque V, Cossette M, Rufiange M, Bilodeau D, Guertin MC, Tardif JC. Supplementation with a beta-glucan tablet has no effect on hyperlipidemia: a randomized, placebo-controlled clinical trial. Am J Clin Nutr 2023:S0002-9165(23)46841-4. [PMID: 37054888 DOI: 10.1016/j.ajcnut.2023.04.012] [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: 01/19/2023] [Revised: 03/24/2023] [Accepted: 04/10/2023] [Indexed: 04/15/2023] Open
Abstract
BACKGROUND Clinical evidence has suggested that the oat soluble fiber β-glucan might have lipid-lowering effects. OBJECTIVE The present clinical trial was conducted to evaluate the efficacy and safety of high-medium molecular weight β-glucan on serum low-density lipoprotein cholesterol (LDL-C) and other lipid subfractions in subjects with hyperlipidemia. METHODS A randomized double-blind trial was performed to assess the efficacy and safety of β-glucan supplementation in reducing lipid levels. Subjects with LDL-C above 3.37 mmol/L when treated or not with a statin were randomly assigned to receive one of three daily doses of a tableted formulation of β-glucan (1.5, 3 or 6 grams) or placebo. The primary efficacy endpoint was the change from baseline to 12 weeks in LDL-C. Secondary endpoints of lipid sub-fractions and safety were also assessed. RESULTS A total of 263 subjects were enrolled; 66 subjects were assigned to each of the 3 β-glucan groups and 65 subjects to the placebo group. The mean change from baseline to 12 weeks in serum LDL-C was 0.08, 0.11 and -0.04 mmol/L in the three β-glucan groups (P=0.23, 0.18 and 0.72 vs. placebo group, respectively) and -0.10 mmol/L in the placebo group. The changes in total cholesterol, small LDL-C subclass particle concentration, non-high-density lipoprotein cholesterol, apolipoprotein B, very low-density lipoprotein cholesterol and high sensitivity C-reactive protein were also not significant in the β-glucan groups when compared to placebo. Gastrointestinal adverse events were reported in 23.4, 34.8 and 66.7% of patients in the β-glucan groups and in 36.9% of patients in the placebo group (P<0.0001 for the overall comparison across the four groups). CONCLUSIONS In subjects with LDL-C above 3.37 mmol/L, a tablet formulation of β-glucan was not effective in reducing LDL-C concentration or other lipid sub-fractions when compared to placebo. CLINICALTRIALS GOV IDENTIFIER NCT03857256.
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Affiliation(s)
| | - Marieve Cossette
- Montreal Health Innovations Coordinating Center (MHICC), Montreal, Canada
| | - Marianne Rufiange
- Montreal Health Innovations Coordinating Center (MHICC), Montreal, Canada
| | | | | | - Jean-Claude Tardif
- Faculté de médecine, Université de Montréal, Montreal, Canada; Montreal Heart Institute (MHI), Montreal, Canada.
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13
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González F, Carelli A, Komarcheuski A, Uana M, do Prado RM, Rossoni D, Gomes M, Vasconcellos R. Yeast Cell Wall Compounds on The Formation of Fermentation Products and Fecal Microbiota in Cats: An In Vivo and In Vitro Approach. Animals (Basel) 2023; 13:637. [PMID: 36830424 PMCID: PMC9951743 DOI: 10.3390/ani13040637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/28/2022] [Accepted: 12/28/2022] [Indexed: 02/15/2023] Open
Abstract
The effects of yeast cell wall compounds (YCWs) being added to cat food on hindgut fermentation metabolites and fecal microbiota were assessed in in vivo Experiment 1 (Exp. 1) and in vitro Experiments 2 and 3 (Exp. 2 and 3). In Exp. 1, the cats' diets were supplemented with two dietary concentrations (46.2 and 92.4 ppm) of YCWs (YCW-15 and YCW-30, respectively), and a negative control diet with no compound in three groups (six cats per group) was used to assess the fecal score, pH, digestibility, fermentation products, and microbiota. In Exp. 2, feces from the cats that were not supplemented with YCWs (control) were used as an inoculum. A blend of pectin, amino acids, and cellulose was used as a substrate, and the YCW compound was added at two levels (5 and 10 mg). In Exp. 3, feces from cats fed YCWs were used as an inoculum to test three different substrates (pectin, amino acids, and cellulose). In Exp. 2 and 3, the gas production, pH, and fermentation products (ammonia, SCFAs, and BCFAs) were assessed. YCW-30 resulted in a higher digestibility coefficient of the crude protein, organic matter (OM) (p < 0.05), and energy of the diet (p < 0.10). Regarding the fermentation products, YCW-15 showed a trend toward higher concentrations of propionate, acetate, lactate, ammonia, isobutyrate, and valerate, while YCW-30 showed a trend (p < 0.10) toward higher levels of butyrate and pH values. The bacteroidia class and the genus Prevotella were increased by using YCW-30 and the control. At the gender level, decreased (p < 0.01) Megasphaera was observed with YCW inclusion. The microbiota differed (p < 0.01) among the groups in their Shannon indexes. For beta diversity, YCW-30 showed higher indexes (p = 0.008) than the control. The microbiota metabolic profile differed in the pathway CENTFERM-PWY; it was more expressed in YCW-30 compared to the control. In Exp. 2, the YCWs showed a higher ratio (p = 0.006) of the fermentation products in the treatments with additives with a trend towards a high dose of the additive (10 mg). In Exp. 3, the effects of the substrates (p < 0.001), but not of the YCWs, on the fermentation products were observed, perhaps due to the low dietary concentrations we used. However, the marked responses of the fermentation products to the substrates validated the methodology. We could conclude that the YCWs, even at low dietary concentrations, affected fecal SCFA production, reduced the fecal pH, and modulated the fecal microbiota in the cats. These responses were more pronounced under in vitro conditions.
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Affiliation(s)
- Fernando González
- Department of Internal Medicine, College of Veterinary Medicine and Animal Science, University of São Paulo (USP)—São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo 13690-970, Brazil
| | - Amanda Carelli
- Department of Animal Science, State University of Maringá, Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
| | - Alina Komarcheuski
- Department of Animal Science, State University of Maringá, Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
| | - Mayara Uana
- Department of Animal Science, State University of Maringá, Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
| | - Rodolpho Martin do Prado
- Department of Animal Science, State University of Maringá, Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
| | - Diogo Rossoni
- Department of Animal Science, State University of Maringá, Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
| | - Márcia Gomes
- Department of Internal Medicine, College of Veterinary Medicine and Animal Science, University of São Paulo (USP)—São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo 13690-970, Brazil
| | - Ricardo Vasconcellos
- Department of Animal Science, State University of Maringá, Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
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14
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Gotteland M, Zazueta A, Pino JL, Fresard A, Sambra V, Codoceo J, Cires MJ, López X, Vivanco JP, Magne F. Modulation of Postprandial Plasma Concentrations of Digestive Hormones and Gut Microbiota by Foods Containing Oat ß-Glucans in Healthy Volunteers. Foods 2023; 12:foods12040700. [PMID: 36832775 PMCID: PMC9955387 DOI: 10.3390/foods12040700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/28/2022] [Accepted: 12/31/2022] [Indexed: 02/09/2023] Open
Abstract
Cereal β-glucans are beneficial health ingredients that reduce cholesterolemia and postprandial glycaemia. However, their impact on digestive hormones and gut microbiota is not yet fully established. Two randomized, double-blind, controlled studies were conducted. In the first study, 14 subjects ingested a breakfast with or without β-glucan from oats (5.2 g). Compared to the control, β-glucan increased orocecal transit time (p = 0.028) and decreased mean appetite score (p = 0.014) and postprandial plasma ghrelin (p = 0.030), C-peptide (p = 0.001), insulin (p = 0.06), and glucose (p = 0.0006). β-glucan increased plasma GIP (p = 0.035) and PP (p = 0.018) without affecting leptin, GLP-1, PYY, glucagon, amylin, or 7α-hydroxy-4-cholesten-3-one, a biomarker of bile acid synthesis. In the second study, 32 subjects were distributed into 2 groups to ingest daily foods with (3 g/day) or without β-glucan for 3 weeks; stools were collected before/after treatment. No changes in fecal microbiota composition/diversity (deep sequencing) were detected with β-glucans. These results indicate that acute intake of 5 g β-glucan slows transit time and decreases hunger sensation and postprandial glycaemia without affecting bile-acid synthesis, these changes being associated with decreased plasma insulin, C-peptide, and ghrelin, and increased plasma GIP and PP. However, regular daily intake of 3 g β-glucan is not sufficient to have an effect on fecal microbiota composition.
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Affiliation(s)
- Martin Gotteland
- Department of Nutrition, Faculty of Medicine, University of Chile, Independencia, Santiago 8380453, Chile
- Laboratory of Microbiology and Probiotics, Institute of Nutrition and Food Technology (INTA), University of Chile, Macul, Santiago 7830489, Chile
- Correspondence: (M.G.); (F.M.)
| | - Alejandra Zazueta
- Microbiology and Mycology Program, ICBM, Faculty of Medicine, University of Chile, Independencia, Santiago 8380453, Chile
| | - José Luis Pino
- Department of Nutrition, Faculty of Medicine, University of Chile, Independencia, Santiago 8380453, Chile
| | - Andrea Fresard
- Department of Nutrition, Faculty of Medicine, University of Chile, Independencia, Santiago 8380453, Chile
| | - Verónica Sambra
- Department of Nutrition, Faculty of Medicine, University of Chile, Independencia, Santiago 8380453, Chile
| | - Juana Codoceo
- Department of Nutrition, Faculty of Medicine, University of Chile, Independencia, Santiago 8380453, Chile
| | - María José Cires
- Department of Nutrition, Faculty of Medicine, University of Chile, Independencia, Santiago 8380453, Chile
| | - Ximena López
- Consorcio de Cereales Funcionales (CCF), Huechuraba, Santiago 8590871, Chile
| | - Juan Pablo Vivanco
- Granotec Chile S.A., Huechuraba, Santiago 8590871, Chile
- Department of Food Science and Chemical Technology, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Independencia, Santiago 8380494, Chile
| | - Fabien Magne
- Microbiology and Mycology Program, ICBM, Faculty of Medicine, University of Chile, Independencia, Santiago 8380453, Chile
- Correspondence: (M.G.); (F.M.)
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Eraniappan S, Balasubramaniyan P, Uddandrao VVS, Roy A, Singaravel S. Βeta-glucan suppresses high-fat-diet-induced obesity by attenuating dyslipidemia and modulating obesogenic marker expressions in rats. Fundam Clin Pharmacol 2023; 37:629-638. [PMID: 36649007 DOI: 10.1111/fcp.12871] [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: 07/07/2022] [Revised: 12/07/2022] [Accepted: 01/10/2023] [Indexed: 01/18/2023]
Abstract
The current study was designed to evaluate the therapeutic potential of beta-glucan (BG), which is a key bioactive compound predominantly present in mushrooms and cereals against high-fat-diet (HFD)-induced obesity, and to understand its mechanism of action. Obesity was induced in rats by supplementing the diet with HFD and BG (40 mg/kg body weight) for a period of 6 weeks. At the end of the experimental period, the body weight, as well as hyperglycemic, dyslipidemia, and obesogenic marker expressions, was assessed in the control group and in the experimental obese rats. Administration of BG to obese rats significantly reduced body weight gain and attenuated hyperglycemia, which was confirmed by the decreased blood glucose and insulin resistance. At the same time, BG mitigated dyslipidemia by altering expressions of peroxisome proliferator-activated receptor-gamma (PPAR-γ), sterol regulatory element-binding protein 1 (SREBP-1c), fatty acid synthase (FAS), 3-hydroxy-3-methylglutaryl-CoA (HMG-CoA) reductase, and fatty acid-binding protein-4 (Fab-4) in HFD-induced obese rats. In conclusion, this study revealed that BG is a potential candidate to ameliorate HFD-induced obesity by modulating obesogenic marker expressions, especially by regulating the master regulator PPAR-γ.
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Affiliation(s)
- Seshathri Eraniappan
- Department of Pharmacology, Bharath Medical College and Hospital, Bharath Institute of Higher Education and Research, Chennai, India
| | | | - V V Sathibabu Uddandrao
- Department of Biochemistry, K.S. Rangasamy College of Arts and Science (Autonomous), Tiruchengode, India
| | - Anitha Roy
- Center for Transdisciplinary Research, Department of Pharmacology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, India
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Ahmad A, Tiwari RK, Saeed M, Al-Amrah H, Han I, Choi EH, Yadav DK, Ansari IA. Carvacrol instigates intrinsic and extrinsic apoptosis with abrogation of cell cycle progression in cervical cancer cells: Inhibition of Hedgehog/GLI signaling cascade. Front Chem 2023; 10:1064191. [PMID: 36712982 PMCID: PMC9874127 DOI: 10.3389/fchem.2022.1064191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 12/05/2022] [Indexed: 01/13/2023] Open
Abstract
Recent times have seen a strong surge in therapeutically targeting the hedgehog (HH)/GLI signaling pathway in cervical cancer. HH signaling pathway is reported to be a crucial modulator of carcinogenesis in cervical cancer and is also associated with recurrence and development of chemoresistance. Moreover, our previous reports have established that carvacrol (CAR) inhibited the proliferation of prostate cancer cells via inhibiting the Notch signaling pathway and thus, it was rational to explore its antiproliferative effects in cervical cancer cell lines. Herein, the present study aimed to investigate the anticancer and apoptotic potential of CAR on C33A cervical cancer cells and further explore the underlying mechanisms. We found that CAR significantly suppressed the growth of C33A cells, induced cell cycle arrest, and enhanced programmed cell death along with augmentation in the level of ROS, dissipated mitochondrial membrane potential, activation of caspase cascade, and eventually inhibited the HH signaling cascade. In addition, CAR treatment increased the expression of pro-apoptotic proteins (Bax, Bad, Fas-L, TRAIL, FADDR, cytochrome c) and concomitantly reduced the expression of anti-apoptotic proteins (Bcl-2 and Bcl-xL) in C33A cells. CAR mediates the activation of caspase-9 and -3 (intrinsic pathway) and caspase-8 (extrinsic pathway) accompanied by the cleavage of PARP in cervical cancer cells. Thus, CAR induced apoptosis by both the intrinsic and extrinsic apoptotic pathways. CAR efficiently inhibited the growth of cervical cancer cells via arresting the cell cycle at G0/G1 phase and modulated the gene expression of related proteins (p21, p27, cyclin D1 and CDK4). Moreover, CAR inhibited the HH/GLI signaling pathway by down regulating the expression of SMO, PTCH and GLI1 proteins in cervical carcinoma cells. With evidence of the above results, our data revealed that CAR treatment suppressed the growth of HPV-C33A cervical cancer cells and further elucidated the mechanistic insights into the functioning of CAR.
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Affiliation(s)
- Afza Ahmad
- Department of Biosciences, Integral University, Lucknow, India
| | | | - Mohd Saeed
- Department of Biology, College of Sciences, University of Hail, Hail, Saudi Arabia
| | - Hadba Al-Amrah
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ihn Han
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Electrical & Biological Physics, Kwangwoon University, Seoul, South Korea
| | - Eun-Ha Choi
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Electrical & Biological Physics, Kwangwoon University, Seoul, South Korea,*Correspondence: Eun-Ha Choi, ; Dharmendra K. Yadav,
| | - Dharmendra K. Yadav
- Department of Pharmacy and Gachon Institute of Pharmaceutical Science, College of Pharmacy, Gachon University, Incheon, South Korea,*Correspondence: Eun-Ha Choi, ; Dharmendra K. Yadav,
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17
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Cao L, Li J, Zhang J, Huang H, Gui F, Xu W, Zhang L, Bi S. Beta-glucan enhanced immune response to Newcastle disease vaccine and changed mRNA expression of spleen in chickens. Poult Sci 2022; 102:102414. [PMID: 36565635 PMCID: PMC9801214 DOI: 10.1016/j.psj.2022.102414] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/21/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022] Open
Abstract
The present study was performed to investigate the effect of oral administration of β-glucan (G70), a product obtained from the cell wall of yeast, on Newcastle disease virus (NDV)-specific hemagglutination inhibition (HI) titers, lymphocyte proliferation, and the role of T lymphocyte subpopulations in chickens treated with live NDV vaccine. In addition, the influence of β-glucan on splenic gene expression was investigated by transcriptome sequencing. The results revealed that the supplementation of β-glucan boosted the titer of serum NDV HI increased the NDV stimulation index of lymphocytes in peripheral blood and intestinal tract, and promoted the differentiation of T lymphocytes into CD4+ T cells. The RNA sequencing (RNA-seq) analysis demonstrated that G70 upregulated the mRNA expressions related to G-protein coupled receptor and MHC class I polypeptide, and downregulated the mRNA expressions related to cathelicidin and beta-defensin. The immunomodulatory effect of G70 might function through mitogen-activated protein kinase signaling pathway. To sum up, G70 could boost the immunological efficacy of live NDV vaccine in chickens and could be applied as a potential adjuvant candidate in the poultry industry.
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Affiliation(s)
- Liting Cao
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Rongchang, Chongqing, 402460, P. R. China
| | - Jun Li
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Rongchang, Chongqing, 402460, P. R. China
| | - Jianrong Zhang
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Rongchang, Chongqing, 402460, P. R. China
| | - Huan Huang
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Rongchang, Chongqing, 402460, P. R. China
| | - Fuxing Gui
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Rongchang, Chongqing, 402460, P. R. China
| | - Wei Xu
- Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, MOA Key Laboratory of Animal Virology, Center for Veterinary Sciences, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
| | - Li Zhang
- Immunology Research Center, Medical Research Institute, Southwest University, Rongchang, Chongqing 402460, P. R. China
| | - Shicheng Bi
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Rongchang, Chongqing, 402460, P. R. China,Correspondence author:
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Fan TWM, Daneshmandi S, Cassel TA, Uddin MB, Sledziona J, Thompson PT, Lin P, Higashi RM, Lane AN. Polarization and β-Glucan Reprogram Immunomodulatory Metabolism in Human Macrophages and Ex Vivo in Human Lung Cancer Tissues. J Immunol 2022; 209:1674-1690. [PMID: 36150727 PMCID: PMC9588758 DOI: 10.4049/jimmunol.2200178] [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] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 08/23/2022] [Indexed: 11/06/2022]
Abstract
Immunomodulatory (IM) metabolic reprogramming in macrophages (Mϕs) is fundamental to immune function. However, limited information is available for human Mϕs, particularly in response plasticity, which is critical to understanding the variable efficacy of immunotherapies in cancer patients. We carried out an in-depth analysis by combining multiplex stable isotope-resolved metabolomics with reversed phase protein array to map the dynamic changes of the IM metabolic network and key protein regulators in four human donors' Mϕs in response to differential polarization and M1 repolarizer β-glucan (whole glucan particles [WGPs]). These responses were compared with those of WGP-treated ex vivo organotypic tissue cultures (OTCs) of human non-small cell lung cancer. We found consistently enhanced tryptophan catabolism with blocked NAD+ and UTP synthesis in M1-type Mϕs (M1-Mϕs), which was associated with immune activation evidenced by increased release of IL-1β/CXCL10/IFN-γ/TNF-α and reduced phagocytosis. In M2a-Mϕs, WGP treatment of M2a-Mϕs robustly increased glucose utilization via the glycolysis/oxidative branch of the pentose phosphate pathway while enhancing UDP-N-acetyl-glucosamine turnover and glutamine-fueled gluconeogenesis, which was accompanied by the release of proinflammatory IL-1β/TNF-α to above M1-Mϕ's levels, anti-inflammatory IL-10 to above M2a-Mϕ's levels, and attenuated phagocytosis. These IM metabolic responses could underlie the opposing effects of WGP, i.e., reverting M2- to M1-type immune functions but also boosting anti-inflammation. Variable reprogrammed Krebs cycle and glutamine-fueled synthesis of UTP in WGP-treated OTCs of human non-small cell lung cancer were observed, reflecting variable M1 repolarization of tumor-associated Mϕs. This was supported by correlation with IL-1β/TNF-α release and compromised tumor status, making patient-derived OTCs unique models for studying variable immunotherapeutic efficacy in cancer patients.
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Affiliation(s)
- Teresa W-M Fan
- Center for Environmental and Systems Biochemistry, University of Kentucky, Lexington, KY;
- Markey Cancer Center, University of Kentucky, Lexington, KY; and
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY
| | - Saeed Daneshmandi
- Center for Environmental and Systems Biochemistry, University of Kentucky, Lexington, KY
| | - Teresa A Cassel
- Center for Environmental and Systems Biochemistry, University of Kentucky, Lexington, KY
| | - Mohammad B Uddin
- Center for Environmental and Systems Biochemistry, University of Kentucky, Lexington, KY
| | - James Sledziona
- Center for Environmental and Systems Biochemistry, University of Kentucky, Lexington, KY
| | - Patrick T Thompson
- Center for Environmental and Systems Biochemistry, University of Kentucky, Lexington, KY
| | - Penghui Lin
- Center for Environmental and Systems Biochemistry, University of Kentucky, Lexington, KY
| | - Richard M Higashi
- Center for Environmental and Systems Biochemistry, University of Kentucky, Lexington, KY
- Markey Cancer Center, University of Kentucky, Lexington, KY; and
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY
| | - Andrew N Lane
- Center for Environmental and Systems Biochemistry, University of Kentucky, Lexington, KY;
- Markey Cancer Center, University of Kentucky, Lexington, KY; and
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY
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19
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Rummell LM, Steele MA, Templeman JR, Yohe TT, Akhtar N, Lambie JG, Singh P, Asquith T, Verbrugghe A, Pearson W, Shoveller AK. A proof of principle study investigating the effects of supplemental concentrated brewer's yeast on markers of gut permeability, inflammation, and fecal metabolites in healthy non-challenged adult sled dogs. J Anim Sci 2022; 100:skac281. [PMID: 36029013 PMCID: PMC9645558 DOI: 10.1093/jas/skac281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 08/26/2022] [Indexed: 11/13/2022] Open
Abstract
Yeast-derived β-glucans impact immunity, though their effects on gut permeability and inflammation are less understood. Most research has investigated other components of the yeast cell wall, such as the prebiotic mannan- and fructo-oligosaccharides. The objective of this study was to assess the effects of feeding a concentrated yeast product on markers of inflammation (serum amyloid A [SAA] and haptoglobin [Hp]) and oxidative status (malondialdehyde [MDA]), fecal products of fermentation, and gut permeability. Nineteen privately owned domestic Siberian huskies, and one Alaskan husky (9 females: 5 intact, 4 spayed; 11 males: 3 intact, 8 neutered), with an average age of 4.8 ± 2.6 yr and body weight (BW) of 25.6 ± 4.1 kg, were used in this study. Dogs were blocked and randomly allocated to one of two diet groups. Ten dogs received a dry extruded diet. The other 10 received the same diet top dressed with yeast for a daily β-glucan dose of 7 mg/kg BW for 10 wk. Fecal collection, for evaluation of fecal metabolites, and scoring occurred weekly. Gut permeability was assessed using the chromium-labeled ethylenediamine tetra-acetic acid (Cr-EDTA) and iohexol markers prior to the initiation of dietary treatment and after 10 wk of treatment. Blood samples were collected premarker administration and 0.5, 1, 2, 3, 4, 5, and 6 h postadministration. Fasting concentrations of SAA, Hp, and MDA were measured on weeks -1, 2, 4, and 8. Incremental area under the curve (I-AUC) was calculated for serum iohexol and Cr-EDTA concentrations. All data were analyzed using PROC GLIMMIX of SAS with dog as random effect, and week as fixed effect and repeated measure. Dogs receiving treatment tended to have decreased I-AUC of Iohexol (P = 0.10) and Cr-EDTA (P = 0.06) between baseline and cessation of treatment compared to the change over time in I-AUC for control (Ctl) dogs. Treatment dogs had lower Hp concentrations (P ≤ 0.05) than Ctl. There were no differences between treatments for SAA and MDA concentrations (P > 0.05). Fecal arabinose concentrations were greater in treatment (Trt) dogs (P ≤ 0.05) compared to Ctl, though no other fecal metabolites were affected by treatment. There was no difference in the relative frequency of defecations scored at any fecal score between Trt and Ctl dogs, and mean score did not differ between groups (P > 0.10). These data suggest that concentrated brewer's yeast may have the potential to reduce gut permeability without impacting inflammatory status and markers of health in adult dogs.
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Affiliation(s)
- Lindsey M Rummell
- Department of Animal Biosciences, Ontario Agricultural College, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Michael A Steele
- Department of Animal Biosciences, Ontario Agricultural College, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - James R Templeman
- Department of Animal Biosciences, Ontario Agricultural College, University of Guelph, Guelph, Ontario N1G 2W1, Canada
- Primal Pet Foods, Primal Pet Group, Fairfield, CA, 94534USA
| | - Taylor T Yohe
- Department of Animal Biosciences, Ontario Agricultural College, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Nadeem Akhtar
- Department of Animal Biosciences, Ontario Agricultural College, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Jocelyn G Lambie
- Department of Animal Biosciences, Ontario Agricultural College, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Pawanpreet Singh
- Department of Animal Biosciences, Ontario Agricultural College, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | | | - Adronie Verbrugghe
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, N1G 2W1Canada
| | - Wendy Pearson
- Department of Animal Biosciences, Ontario Agricultural College, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Anna K Shoveller
- Department of Animal Biosciences, Ontario Agricultural College, University of Guelph, Guelph, Ontario N1G 2W1, Canada
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20
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Dioum EHM, Schneider KL, Vigerust DJ, Cox BD, Chu Y, Zachwieja JJ, Furman D. Oats Lower Age-Related Systemic Chronic Inflammation (iAge) in Adults at Risk for Cardiovascular Disease. Nutrients 2022; 14:nu14214471. [PMID: 36364734 PMCID: PMC9656573 DOI: 10.3390/nu14214471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 11/16/2022] Open
Abstract
Despite being largely preventable, cardiovascular disease (CVD) is still the leading cause of death globally. Recent studies suggest that the immune system, particularly a form of systemic chronic inflammation (SCI), is involved in the mechanisms leading to CVD; thus, targeting SCI may help prevent or delay the onset of CVD. In a recent placebo-controlled randomized clinical trial, an oat product providing 3 g of β-Glucan improved cholesterol low-density lipoprotein (LDL) levels and lowered cardiovascular risk in adults with borderline high cholesterol. Here, we conducted a secondary measurement of the serum samples to test whether the oat product has the potential to reduce SCI and improve other clinical outcomes related to healthy aging. We investigated the effects of the oat product on a novel metric for SCI called Inflammatory Age® (iAge®), derived from the Stanford 1000 Immunomes Project. The iAge® predicts multimorbidity, frailty, immune decline, premature cardiovascular aging, and all-cause mortality on a personalized level. A beneficial effect of the oat product was observed in subjects with elevated levels of iAge® at baseline (>49.6 iAge® years) as early as two weeks post-treatment. The rice control group did not show any significant change in iAge®. Interestingly, the effects of the oat product on iAge® were largely driven by a decrease in the Eotaxin-1 protein, an aging-related chemokine, independent of a person’s gender, body mass index, or chronological age. Thus, we describe a novel anti-SCI role for oats that could have a major impact on functional, preventative, and personalized medicine.
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Affiliation(s)
- El Hadji M Dioum
- Quaker Oats Center of Excellence, PepsiCo Health and Nutrition Sciences, Chicago, IL 60607, USA
| | | | | | - Bryan D Cox
- Edifice Health Inc., San Mateo, CA 94401, USA
| | - YiFang Chu
- Quaker Oats Center of Excellence, PepsiCo Health and Nutrition Sciences, Chicago, IL 60607, USA
| | - Jeffery J Zachwieja
- Quaker Oats Center of Excellence, PepsiCo Health and Nutrition Sciences, Chicago, IL 60607, USA
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21
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Raghavan K, Dedeepiya VD, Kandaswamy RS, Balamurugan M, Ikewaki N, Sonoda T, Kurosawa G, Iwasaki M, Preethy S, Abraham SJK. Improvement of sleep and melatonin in children with autism spectrum disorder after β-1,3/1,6-glucan consumption: An open-label prospective pilot clinical study. Brain Behav 2022; 12:e2750. [PMID: 35993920 PMCID: PMC9480952 DOI: 10.1002/brb3.2750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 08/04/2022] [Accepted: 08/08/2022] [Indexed: 11/07/2022] Open
Abstract
INTRODUCTION Poor sleep quality is a major problem in patients with autism spectrum disorder (ASD), and is attributed to low melatonin levels. Melatonin supplementation is recommended; however, its effectiveness varies. β-Glucans have previously been shown to improve melatonin levels in animal studies. Herein, we examined the effectiveness of Aureobasidium pullulans (Nichi Glucan), a species of black yeast that contains beta-1,3/1,6-glucan, in a pilot study of children with ASD. METHODS Thirteen children (age, 2.5-13 years) with ASD were recruited for the study. The control group consisted of four patients (Gr. 1), while nine patients were classified into the treatment group (Gr. 2). Gr. 2 received 1 g of Nichi Glucan along with conventional therapy, whereas the Gr. 1 (control) patients received conventional therapy alone for 90 days. Serum melatonin levels and sleep patterns, assessed using a subjective questionnaire, were evaluated before and after treatment. RESULTS In Gr. 2, the average serum melatonin level increased from 238.85 ng/L preintervention to 394.72 ng/L postintervention. Eight of nine participants (88%) in Gr. 2 showed improvements in sleep pattern and quality, while no improvement was observed in the participants in Gr. 1. CONCLUSION The consumption of Nichi Glucan for 90 days resulted in visible improvement in sleep quality, sleep pattern, and serum melatonin levels, which was reported for the first time by our study. A larger multicenter study is required to validate our findings.
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Affiliation(s)
- Kadalraja Raghavan
- Department of Paediatric NeurologyKenmax Medical Service Private LimitedMaduraiIndia
- Department of Paediatric NeurologySarvee Integra Private LimitedChennaiIndia
- Department of Paediatric NeurologyJesuit Antonyraj memorial Interdisciplinary Centre for Advanced Rehabilitation and Education (JAICARE)MaduraiIndia
| | | | | | | | - Nobunao Ikewaki
- Department of Medical Life ScienceKyushu University of Health and WelfareJapan
- Department of ImmunologyJunsei Educational InstituteNobeokaMiyazakiJapan
| | - Tohru Sonoda
- Department of ImmunologyJunsei Educational InstituteNobeokaMiyazakiJapan
| | - Gene Kurosawa
- Department of Academic Research Support Promotion Facility, Center for Research Promotion and SupportFujita Health UniversityAichiJapan
- Research WingMabGenesis KKNagoyaJapan
| | - Masaru Iwasaki
- Centre for Advancing Clinical Research (CACR)School of Medicine, University of YamanashiChuoJapan
| | - Senthilkumar Preethy
- Fujio‐Eiji Academic Terrain (FEAT)Nichi‐In Centre for Regenerative Medicine (NCRM)ChennaiIndia
| | - Samuel JK Abraham
- Mary‐Yoshio Translational Hexagon (MYTH)Nichi‐In Centre for Regenerative Medicine (NCRM)ChennaiIndia
- Centre for Advancing Clinical Research (CACR)School of Medicine, University of YamanashiChuoJapan
- Antony‐ Xavier Interdisciplinary Scholastics (AXIS)GN Corporation Co. Ltd.KofuJapan
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22
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Shao TY, Haslam DB, Bennett RJ, Way SS. Friendly fungi: symbiosis with commensal Candida albicans. Trends Immunol 2022; 43:706-717. [PMID: 35961916 PMCID: PMC10027380 DOI: 10.1016/j.it.2022.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/10/2022] [Accepted: 07/11/2022] [Indexed: 12/22/2022]
Abstract
Mucosal tissues are constitutively colonized by a wide assortment of host-adapted microbes. This includes the polymorphic fungus Candida albicans which is a primary target of human adaptive responses. Immunogenicity is replicated after intestinal colonization in preclinical models with a surprising array of protective benefits for most hosts, but harmful consequences for a few. The interaction between fungus and host is complex, and traditionally, the masking of antigenic fungal ligands has been viewed as a tactic for fungal immune evasion during invasive infection. However, we propose that dynamic expression of cell wall moieties, host cell lysins, and other antigenic C. albicans determinants is necessary during the more ubiquitous context of intestinal colonization to prime immunogenicity and optimize mammalian host symbiosis.
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Affiliation(s)
- Tzu-Yu Shao
- Division of Infectious Diseases, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA; Immunobiology Graduate Program, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - David B Haslam
- Division of Infectious Diseases, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Richard J Bennett
- Molecular Microbiology and Immunology Department, Brown University, Providence, RI 02912, USA.
| | - Sing Sing Way
- Division of Infectious Diseases, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA.
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23
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Luo Z, Ma L, Zhou T, Huang Y, Zhang L, Du Z, Yong K, Yao X, Shen L, Yu S, Shi X, Cao S. Beta-Glucan Alters Gut Microbiota and Plasma Metabolites in Pre-Weaning Dairy Calves. Metabolites 2022; 12:metabo12080687. [PMID: 35893252 PMCID: PMC9332571 DOI: 10.3390/metabo12080687] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 02/01/2023] Open
Abstract
The present study aims to evaluate the alterations in gut microbiome and plasma metabolites of dairy calves with β-glucan (BG) supplementation. Fourteen healthy newborn dairy calves with similar body weight were randomly divided into control (n = 7) and BG (n = 7) groups. All the calves were fed on the basal diet, while calves in the BG group were supplemented with oat BG on d 8 for 14 days. Serum markers, fecal microbiome, and plasma metabolites at d 21 were analyzed. The calves were weaned on d 60 and weighed. The mean weaning weight of the BG group was 4.29 kg heavier than that of the control group. Compared with the control group, the levels of serum globulin, albumin, and superoxide dismutase were increased in the BG group. Oat BG intake increased the gut microbiota richness and decreased the Firmicutes-to-Bacteroidetes ratio. Changes in serum markers were found to be correlated with the plasma metabolites, including sphingosine, trehalose, and 3-methoxy-4-hydroxyphenylglycol sulfate, and gut microbiota such as Ruminococcaceae_NK4A214, Alistipes, and Bacteroides. Overall, these results suggest that the BG promotes growth and health of pre-weaning dairy calves by affecting the interaction between the host and gut microbiota.
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Affiliation(s)
- Zhengzhong Luo
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Chengdu University, Chengdu 610106, China;
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.M.); (T.Z.); (L.Z.); (Z.D.); (X.Y.); (L.S.); (S.Y.)
| | - Li Ma
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.M.); (T.Z.); (L.Z.); (Z.D.); (X.Y.); (L.S.); (S.Y.)
| | - Tao Zhou
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.M.); (T.Z.); (L.Z.); (Z.D.); (X.Y.); (L.S.); (S.Y.)
| | - Yixin Huang
- Institute of Biodiversity, Animal Health & Comparative Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow G61 1QH, UK;
| | - Liben Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.M.); (T.Z.); (L.Z.); (Z.D.); (X.Y.); (L.S.); (S.Y.)
| | - Zhenlong Du
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.M.); (T.Z.); (L.Z.); (Z.D.); (X.Y.); (L.S.); (S.Y.)
| | - Kang Yong
- Department of Animal Science and Technology, Chongqing Three Gorges Vocational College, Chongqing 404100, China;
| | - Xueping Yao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.M.); (T.Z.); (L.Z.); (Z.D.); (X.Y.); (L.S.); (S.Y.)
| | - Liuhong Shen
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.M.); (T.Z.); (L.Z.); (Z.D.); (X.Y.); (L.S.); (S.Y.)
| | - Shumin Yu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.M.); (T.Z.); (L.Z.); (Z.D.); (X.Y.); (L.S.); (S.Y.)
| | - Xiaodong Shi
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Chengdu University, Chengdu 610106, China;
- Correspondence: (X.S.); (S.C.)
| | - Suizhong Cao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.M.); (T.Z.); (L.Z.); (Z.D.); (X.Y.); (L.S.); (S.Y.)
- Correspondence: (X.S.); (S.C.)
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Telle-Hansen VH, Gaundal L, Høgvard B, Ulven SM, Holven KB, Byfuglien MG, Måge I, Knutsen SH, Ballance S, Rieder A, Rud I, Myhrstad MCW. A Three-Day Intervention With Granola Containing Cereal Beta-Glucan Improves Glycemic Response and Changes the Gut Microbiota in Healthy Individuals: A Crossover Study. Front Nutr 2022; 9:796362. [PMID: 35578615 PMCID: PMC9106798 DOI: 10.3389/fnut.2022.796362] [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: 10/16/2021] [Accepted: 04/05/2022] [Indexed: 11/30/2022] Open
Abstract
Intake of soluble fibers including beta-glucan, is known to improve post-prandial glycemic response. The mechanisms have been attributed to the viscous gel forming in the stomach and small intestine, giving a longer absorption time. However, recent evidence suggests a link between intake of beta-glucan and improved glycemic regulation at subsequent meals through the gut microbiota. We investigated the short-term effect of granola with different amounts of cereal beta-glucan on glycemic response and gut microbiota. After a two-week run-in period (baseline), fourteen healthy, normal weight adults completed a dose-response dietary crossover study. Different amounts of cereal beta-glucan (low: 0.8 g, medium: 3.2 g and high: 6.6 g) were provided in granola and eaten with 200 ml low-fat milk as an evening meal for three consecutive days. Blood glucose and insulin were measured fasted and after an oral glucose tolerance test (OGTT) the following day, in addition to peptide YY (PYY) and glucagon-like peptide (GLP-2), fasting short chain fatty acids (SCFA) in blood, breath H2, and gut microbiota in feces. Only the intervention with medium amounts of beta-glucan decreased blood glucose and insulin during OGTT compared to baseline. Fasting PYY increased with both medium and high beta-glucan meal compared to the low beta-glucan meal. The microbiota and SCFAs changed after all three interventions compared to baseline, where acetate and butyrate increased, while propionate was unchanged. Highest positive effect size after intake of beta-glucan was found with Haemophilus, followed by Veillonella and Sutterella. Furthermore, we found several correlations between different bacterial taxa and markers of glycemic response. In summary, intake of granola containing 3.2 g cereal beta-glucan as an evening meal for three consecutive days reduced the glycemic response after an OGTT 0-180 min and changed gut microbiota composition. Since we cannot rule out that other fiber types have contributed to the effect, more studies are needed to further explore the effect of cereal beta-glucan on glycemic regulation. Clinical Trial Registration [www.clinicaltrials.gov], identifier [NCT03293693].
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Affiliation(s)
- Vibeke H. Telle-Hansen
- Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
| | - Line Gaundal
- Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
| | - Benedicte Høgvard
- Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
| | - Stine M. Ulven
- Department of Nutrition, Faculty of Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Kirsten B. Holven
- Department of Nutrition, Faculty of Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
- The Norwegian National Advisory Unit on Familial Hypercholesterolemia, Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | | | - Ingrid Måge
- Nofima AS (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Svein Halvor Knutsen
- Nofima AS (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Simon Ballance
- Nofima AS (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Anne Rieder
- Nofima AS (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Ida Rud
- Nofima AS (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Mari C. W. Myhrstad
- Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
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25
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Schmidt M, Sciurba E, Nikolay S, Hüsken A, Smit I. Relevance of β-Glucan Molecular Properties on Its Suitability as Health Promoting Bread Ingredient. Nutrients 2022; 14. [PMID: 35458132 DOI: 10.3390/nu14081570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 03/21/2022] [Revised: 03/31/2022] [Accepted: 04/07/2022] [Indexed: 02/01/2023] Open
Abstract
The fate of β-glucan (BG) health promoting properties during food production is crucial, but not predictable yet. Therefore, high molar mass BG (hBG) and control BG (cBG) were extracted from two barley varieties, characterized and added to wheat breads at levels of 3% and 6%. Bread quality criteria, carbohydrate contents and BG content and structural properties were determined. Additionally, breads were subjected to an in vitro digestion. The BG content in the chyme, molar mass, molar ratio, viscosity and bile acid retention were determined. The hBG and the cBG decreased loaf volume and increased crumb hardness with increasing BG content. The reduction in BG content during bread making was similar for hBG and cBG, but the molar mass of cBG decreased to a greater extent. As a result, only 10% of cBG entering in vitro digestion were found in the chyme afterwards, while 40% of the ingested hBG were detected. Molar mass reduction was much more severe for cBG compared to hBG. The use of hBG showed higher viscosity and better bile acid retention, indicating cholesterol lowering properties, compared to similar or higher amounts of cBG. These results provide valuable knowledge on the criteria to select BG-rich raw materials for ideal health promoting properties.
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26
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Choudhury QJ, Ambati S, Lewis ZA, Meagher RB. Targeted Delivery of Antifungal Liposomes to Rhizopus delemar. J Fungi (Basel) 2022; 8:jof8040352. [PMID: 35448583 PMCID: PMC9026866 DOI: 10.3390/jof8040352] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/21/2022] [Accepted: 03/28/2022] [Indexed: 12/10/2022] Open
Abstract
Mucormycosis (a.k.a. zygomycosis) is an often-life-threatening disease caused by fungi from the ancient fungal division Mucoromycota. Globally, there are nearly a million people with the disease. Rhizopus spp., and R. delemar (R. oryzae, R. arrhizus) in particular, are responsible for most of the diagnosed cases. Pulmonary, rhino-orbito-cerebral, and invasive mucormycosis are most effectively treated with amphotericin B (AmB) and particularly with liposomal formulations (e.g., AmBisome®). However, even after antifungal therapy, there is still a 50% mortality rate. Hence, there is a critical need to improve therapeutics for mucormycosis. Targeting AmB-loaded liposomes (AmB-LLs) with the pathogen receptor Dectin-1 (DEC1-AmB-LLs) to the beta-glucans expressed on the surface of Aspergillus fumigatus and Candida albicans lowers the effective dose required to kill cells relative to untargeted AmB-LLs. Because Dectin-1 is an immune receptor for R. delemar infections and may bind it directly, we explored the Dectin-1-mediated delivery of liposomal AmB to R. delemar. DEC1-AmB-LLs bound 100- to 1000-fold more efficiently to the exopolysaccharide matrix of R. delemar germlings and mature hyphae relative to AmB-LLs. DEC1-AmB-LLs delivering sub-micromolar concentrations of AmB were an order of magnitude more efficient at inhibiting and/or killing R. delemar than AmB-LLs. Targeted antifungal drug-loaded liposomes have the potential to improve the treatment of mucormycosis.
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Affiliation(s)
- Quanita J. Choudhury
- Department of Microbiology, University of Georgia, Athens, GA 30602, USA; (Q.J.C.); (Z.A.L.)
| | - Suresh Ambati
- Department of Genetics, University of Georgia, Athens, GA 30602, USA;
| | - Zachary A. Lewis
- Department of Microbiology, University of Georgia, Athens, GA 30602, USA; (Q.J.C.); (Z.A.L.)
| | - Richard B. Meagher
- Department of Genetics, University of Georgia, Athens, GA 30602, USA;
- Correspondence:
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Blake VC, Wight CP, Yao E, Sen TZ. GrainGenes: Tools and Content to Assist Breeders Improving Oat Quality. Foods 2022; 11:foods11070914. [PMID: 35407001 PMCID: PMC8998097 DOI: 10.3390/foods11070914] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/15/2022] [Accepted: 03/17/2022] [Indexed: 12/10/2022] Open
Abstract
GrainGenes is the USDA-ARS database and Web resource for wheat, barley, oat, rye, and their relatives. As a community Web hub and database for small grains, GrainGenes strives to provide resources for researchers, students, and plant breeders to improve traits such as quality, yield, and disease resistance. Quantitative trait loci (QTL), genes, and genetic maps for quality attributes in GrainGenes represent the historical approach to mapping genes for groat percentage, test weight, protein, fat, and β-glucan content in oat (Avena spp.). Genetic maps are viewable in CMap, the comparative mapping tool that enables researchers to take advantage of highly populated consensus maps to increase the marker density around their genes-of-interest. GrainGenes hosts over 50 genome browsers and is launching an effort for community curation, including the manually curated tracks with beta-glucan QTL and significant markers found via GWAS and cloned cellulose synthase-like AsClF6 alleles.
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Affiliation(s)
- Victoria C. Blake
- Department of Plant Sciences and Plant Pathology, Montana State University, Bozeman, MT 59717, USA;
- Western Regional Research Center, Crop Improvement and Genetics Research Unit, United States Department of Agriculture—Agricultural Research Service, Albany, CA 94710, USA;
| | - Charlene P. Wight
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON K1A 0C6, Canada;
| | - Eric Yao
- Western Regional Research Center, Crop Improvement and Genetics Research Unit, United States Department of Agriculture—Agricultural Research Service, Albany, CA 94710, USA;
- Department of Bioengineering, University of California, Berkeley, CA 94720, USA
| | - Taner Z. Sen
- Western Regional Research Center, Crop Improvement and Genetics Research Unit, United States Department of Agriculture—Agricultural Research Service, Albany, CA 94710, USA;
- Correspondence:
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Ferreira CS, Vendramini THA, Amaral AR, Rentas MF, Ernandes MC, da Silva FL, Oba PM, de Oliveira Roberti Filho F, Brunetto MA. Metabolic variables of obese dogs with insulin resistance supplemented with yeast beta-glucan. BMC Vet Res 2022; 18:14. [PMID: 34980115 PMCID: PMC8722019 DOI: 10.1186/s12917-021-03106-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 03/17/2021] [Accepted: 08/14/2021] [Indexed: 11/19/2022] Open
Abstract
Background Obesity is one of the most common nutritional disorders in dogs and cats and is related to the development metabolic comorbidities. Weight loss is the recommended treatment, but success is difficult due to the poor satiety control. Yeast beta-glucans are known as biological modifiers because of their innumerable functions reported in studies with mice and humans, but only one study with dogs was found. This study aimed to evaluate the effects of a diet supplemented with 0.1% beta-glucan on glucose, lipid homeostasis, inflammatory cytokines and satiety parameters in obese dogs. Fourteen dogs composed three experimental groups: Obese group (OG) with seven dogs with body condition score (BCS) 8 or 9; Lean group (LG) included seven non-obese dogs with a BCS of 5; and Supplemented Obese group (SOG) was the OG dogs after 90 days of consumption of the experimental diet. Results Compared to OG, SOG had lower plasma basal glycemic values (p = 0.05) and reduced serum cholesterol and triglyceride levels. TNF-α was lower in SOG than in OG (p = 0.05), and GLP-1 was increased in SOG compared to OG and LG (p = 0.02). Conclusion These results are novel and important for recognizing the possibility of using beta-glucan in obesity prevention and treatment.
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Affiliation(s)
- Chayanne Silva Ferreira
- Rio Verde University, Fazenda Fontes do Saber, PO Box 104, Rio Verde, Goiás, 75901-970, Brazil
| | - Thiago Henrique Annibale Vendramini
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 87, Prof. Orlando Marques de Paiva Ave, São Paulo, São Paulo, 05508270, Brazil
| | - Andressa Rodrigues Amaral
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 87, Prof. Orlando Marques de Paiva Ave, São Paulo, São Paulo, 05508270, Brazil
| | - Mariana Fragoso Rentas
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 87, Prof. Orlando Marques de Paiva Ave, São Paulo, São Paulo, 05508270, Brazil
| | - Mariane Ceschin Ernandes
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 87, Prof. Orlando Marques de Paiva Ave, São Paulo, São Paulo, 05508270, Brazil
| | - Flavio Lopes da Silva
- Grandfood Industria e Comercio LTDA, Luiz Augusto de Oliveira Hwy, km 204, Dourado, São Paulo, 13590-000, Brazil
| | - Patricia Massae Oba
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 87, Prof. Orlando Marques de Paiva Ave, São Paulo, São Paulo, 05508270, Brazil
| | | | - Marcio Antonio Brunetto
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 87, Prof. Orlando Marques de Paiva Ave, São Paulo, São Paulo, 05508270, Brazil.
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Rennerova Z, Picó Sirvent L, Carvajal Roca E, Paśnik J, Logar M, Milošević K, Majtan J, Jesenak M. Beta-(1,3/1,6)-D-glucan from Pleurotus ostreatus in the prevention of recurrent respiratory tract infections: An international, multicentre, open-label, prospective study. Front Pediatr 2022; 10:999701. [PMID: 36324817 PMCID: PMC9619242 DOI: 10.3389/fped.2022.999701] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 09/27/2022] [Indexed: 11/13/2022] Open
Abstract
Preschool children are particularly susceptible to recurrent upper and lower respiratory tract infections due to their immune immaturity and other contributing factors. Preventing and/or treating children suffering from recurrent respiratory tract infections (RRTIs) is challenging, and it is important to provide more clinical evidence about the safety and efficacy of natural immunomodulating preparations, including β-glucans. The aim of the present study was to assess the incidence of respiratory tract infections (RTIs) in children with a history of RRTIs for a period of 6 months (3 months of pleuran supplementation and 3 months of follow-up) compared with the same period from October to March of the previous year prior to enrolment in the study. A total of 1,030 children with a mean age of 3.49 ± 1.91 years from seven countries were included in this study. The total number of RTIs observed during the study period was significantly lower compared to the same period of the previous year (7.07 ± 2.89 vs. 3.87 ± 3.19; p < 0.001). Analysis of each type of RTI revealed significant reductions in the mean number and duration of infections for all RTI subtypes compared to the previous year. This study also confirmed the beneficial safety profile of pleuran supplementation. In conclusion, pleuran supplementation represents an interesting and prospective supplement in preventing respiratory infections and reveals new strategies for supporting immune functions in the paediatric population.
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Affiliation(s)
- Zuzana Rennerova
- Department of Paediatric Pulmonology and Phthisiology, Faculty of Medicine, Slovak Medical University, National Children Institute of Health, Bratislava, Slovakia
| | - Leandro Picó Sirvent
- Paediatrics Department, Hospital de la Salud, Valencia, Spain.,Faculty of Medicine and Health Sciences, Valencia Catholic University Saint Vincent Martyr, Valencia, Spain
| | - Eva Carvajal Roca
- Paediatrics Department, Hospital de la Salud, Valencia, Spain.,Faculty of Medicine and Health Sciences, Valencia Catholic University Saint Vincent Martyr, Valencia, Spain
| | | | - Mateja Logar
- Department of Infectious Diseases, University Medical Center Ljubljana, Ljubljana, Slovenia.,Department of Infectious Diseases and Epidemiology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Katarina Milošević
- Department of Pulmonology and Allergology, University Children's Hospital, Belgrade, Serbia.,School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Juraj Majtan
- Institute of Molecular Biology, Slovak Academy of Sciences, Bratislava, Slovakia.,Department of Microbiology, Faculty of Medicine, Slovak Medical University, Bratislava, Slovakia
| | - Milos Jesenak
- Department of Paediatrics, Jessenius Faculty of Medicine, University Teaching Hospital in Martin, Comenius University in Bratislava, Martin, Slovakia.,Department of Clinical Immunology and Allergology, University Teaching Hospital in Martin, Martin, Slovakia
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Xia D, Qiu W, Wang X, Liu J. Recent Advancements and Future Perspectives of Microalgae-Derived Pharmaceuticals. Mar Drugs 2021; 19:703. [PMID: 34940702 PMCID: PMC8703604 DOI: 10.3390/md19120703] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/25/2021] [Accepted: 12/07/2021] [Indexed: 12/19/2022] Open
Abstract
Microalgal cells serve as solar-powered factories that produce pharmaceuticals, recombinant proteins (vaccines and drugs), and valuable natural byproducts that possess medicinal properties. The main advantages of microalgae as cell factories can be summarized as follows: they are fueled by photosynthesis, are carbon dioxide-neutral, have rapid growth rates, are robust, have low-cost cultivation, are easily scalable, pose no risk of human pathogenic contamination, and their valuable natural byproducts can be further processed. Despite their potential, there are many technical hurdles that need to be overcome before the commercial production of microalgal pharmaceuticals, and extensive studies regarding their impact on human health must still be conducted and the results evaluated. Clearly, much work remains to be done before microalgae can be used in the large-scale commercial production of pharmaceuticals. This review focuses on recent advancements in microalgal biotechnology and its future perspectives.
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Affiliation(s)
- Donghua Xia
- State Key Laboratory of Food Science and Technology, The Engineering Research Center for Biomass Conversion, Nanchang University, Nanchang 330047, China;
| | - Wen Qiu
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China;
| | - Xianxian Wang
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany;
| | - Junying Liu
- State Key Laboratory of Food Science and Technology, The Engineering Research Center for Biomass Conversion, Nanchang University, Nanchang 330047, China;
- Pharmaceutical Manufacturing Technology Centre (PMTC), Bernal Institute, University of Limerick, V94T9PX Limerick, Ireland
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31
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Grip J, Steene E, Einar Engstad R, Hart J, Bell A, Skjæveland I, Basnet P, Škalko-Basnet N, Mari Holsæter A. Development of a novel beta-glucan supplemented hydrogel spray formulation and wound healing efficacy in a db/db diabetic mouse model. Eur J Pharm Biopharm 2021; 169:280-291. [PMID: 34728362 DOI: 10.1016/j.ejpb.2021.10.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 09/15/2021] [Accepted: 10/24/2021] [Indexed: 12/30/2022]
Abstract
To relief the severe economic and social burdens and patient suffering caused by the increasing incidence of chronic wounds, more effective treatments are urgently needed. In this study, we focused on developing a novel sprayable wound dressing with the active ingredient β-1,3/1,6-glucan (βG). Since βG is already available as the active ingredient in a commercial wound healing product provided as a hydrogel in a tube (βG-Gel), the sprayable format should bring clinical benefit by being easily sprayed onto wounds; whilst retaining βG-Gel's physical stability, biological safety and wound healing efficacy. Potentially sprayable βG hydrogels were therefore formulated, based on an experimental design setup. One spray formulation, named βG-Spray, was selected for further investigation, as it showed favorable rheological and spraying properties. The βG-Spray was furthermore found to be stable at room temperature for more than a year, retaining its rheological properties and sprayability. The cytotoxicity of βG-Spray in keratinocytes in vitro, was shown to be promising even at the highest tested concentration of 100 μg/ml. The βG-Spray also displayed favorable fluid affinity characteristics, with a capacity to both donate and absorb close to 10% fluid relative to its own weight. Finally, the βG-Spray was proven comparably effective to the commercial product, βG-Gel, and superior to both the water and the carrier controls (NoβG-Spray), in terms of its ability to promote wound healing in healing-impaired animals. Contraction was found to be the main wound closure mechanism responsible for the improvement seen in the βG-treatment groups (βG-Spray and βG-Gel). In conclusion, the novel sprayable βG formulation, confirmed its potential to expand the clinical use of βG as wound dressing.
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Affiliation(s)
- Jostein Grip
- Biotec BetaGlucans AS, Tromsø 9019, Norway; Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø 9037, Norway
| | | | | | - Jeff Hart
- Cica Biomedical Ltd, Knaresborough, North Yorkshire, HG5 9AY, UK
| | - Andrea Bell
- Cica Biomedical Ltd, Knaresborough, North Yorkshire, HG5 9AY, UK
| | | | - Purusotam Basnet
- Women's Health and Perinatology Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø 9037, Norway; Department of Obstetrics and Gynecology, University Hospital of North Norway, Sykehusveien, Tromsø 5738, 9038, Norway
| | - Nataša Škalko-Basnet
- Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø 9037, Norway
| | - Ann Mari Holsæter
- Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø 9037, Norway.
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Paudel D, Dhungana B, Caffe M, Krishnan P. A Review of Health-Beneficial Properties of Oats. Foods 2021; 10:foods10112591. [PMID: 34828872 PMCID: PMC8625765 DOI: 10.3390/foods10112591] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/28/2021] [Accepted: 10/23/2021] [Indexed: 12/31/2022] Open
Abstract
Oat is among the food crops and ancient grains cultivated and consumed worldwide. It is gaining in popularity owing to its nutritional composition and multifunctional benefits of select bioactive compounds. Beta-glucan is an important component of dietary fiber found in oat grains. It is the major active compound in oats with proven cholesterol-lowering and antidiabetic effects. Oats also provide substantial levels of other bioactive compounds such as phenolic acids, tocols, sterols, avenacosides, and avenanthramides. The consumption of oats has been determined to be beneficial for human health by promoting immunomodulation and improving gut microbiota. In addition, oat consumption assists in preventing diseases such as atherosclerosis, dermatitis, and some forms of cancer. While much has been published in relation to oat nutrients and oat fibers and their impact on major diseases, the oat industries and consumers may benefit from greater knowledge and understanding of clinical effects, range of occurrence, distribution, therapeutic doses and food functional attributes of other oat bioactives such as avenanthramides and saponins as well as other anti-inflammatory agents found in the cereal. This review focuses on the various studies relevant to the contribution of the consumption of oats and oat-based products in preventing human diseases and promoting human health.
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Affiliation(s)
- Devendra Paudel
- Dairy and Food Science Department, South Dakota State University, Brookings, SD 57007, USA;
| | - Bandana Dhungana
- Department of Agronomy, Horticulture and Plant Science, South Dakota State University, Brookings, SD 57007, USA; (B.D.); (M.C.)
| | - Melanie Caffe
- Department of Agronomy, Horticulture and Plant Science, South Dakota State University, Brookings, SD 57007, USA; (B.D.); (M.C.)
| | - Padmanaban Krishnan
- Dairy and Food Science Department, South Dakota State University, Brookings, SD 57007, USA;
- Correspondence:
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Maina NH, Rieder A, De Bondt Y, Mäkelä-Salmi N, Sahlstrøm S, Mattila O, Lamothe LM, Nyström L, Courtin CM, Katina K, Poutanen K. Process-Induced Changes in the Quantity and Characteristics of Grain Dietary Fiber. Foods 2021; 10:foods10112566. [PMID: 34828846 PMCID: PMC8624990 DOI: 10.3390/foods10112566] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/08/2021] [Accepted: 10/15/2021] [Indexed: 12/16/2022] Open
Abstract
Daily use of wholegrain foods is generally recommended due to strong epidemiological evidence of reduced risk of chronic diseases. Cereal grains, especially the bran part, have a high content of dietary fiber (DF). Cereal DF is an umbrella concept of heterogeneous polysaccharides of variable chemical composition and molecular weight, which are combined in a complex network in cereal cell walls. Cereal DF and its distinct components influence food digestion throughout the gastrointestinal tract and influence nutrient absorption and other physiological reactions. After repeated consumption of especially whole grain cereal foods, these effects manifest in well-demonstrated health benefits. As cereal DF is always consumed in the form of processed cereal food, it is important to know the effects of processing on DF to understand, safeguard and maximize these health effects. Endogenous and microbial enzymes, heat and mechanical energy during germination, fermentation, baking and extrusion destructurize the food and DF matrix and affect the quantity and properties of grain DF components: arabinoxylans (AX), beta-glucans, fructans and resistant starch (RS). Depolymerization is the most common change, leading to solubilization and loss of viscosity of DF polymers, which influences postprandial responses to food. Extensive hydrolysis may also remove oligosaccharides and change the colonic fermentability of DF. On the other hand, aggregation may also occur, leading to an increased amount of insoluble DF and the formation of RS. To understand the structure–function relationship of DF and to develop foods with targeted physiological benefits, it is important to invest in thorough characterization of DF present in processed cereal foods. Such understanding also demands collaborative work between food and nutritional sciences.
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Affiliation(s)
- Ndegwa H. Maina
- Department of Food and Nutrition, University of Helsinki, P.O. Box 66, FI-00014 Helsinki, Finland; (N.M.-S.); (K.K.)
- Correspondence:
| | - Anne Rieder
- Nofima, Norwegian Institute of Food, Fisheries and Aquaculture Research, PB 210, N-1431 Ås, Norway; (A.R.); (S.S.)
| | - Yamina De Bondt
- Laboratory of Food Chemistry and Biochemistry, KU Leuven, 3001 Leuven, Belgium; (Y.D.B.); (C.M.C.)
| | - Noora Mäkelä-Salmi
- Department of Food and Nutrition, University of Helsinki, P.O. Box 66, FI-00014 Helsinki, Finland; (N.M.-S.); (K.K.)
| | - Stefan Sahlstrøm
- Nofima, Norwegian Institute of Food, Fisheries and Aquaculture Research, PB 210, N-1431 Ås, Norway; (A.R.); (S.S.)
| | - Outi Mattila
- VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 Espoo, Finland; (O.M.); (K.P.)
| | - Lisa M. Lamothe
- Nestlé Institute of Materials Science, Nestlé Research, Société des Produits Nestlé S.A. Route du Jorat 57, 1000 Lausanne 26, 1800 Vevey, Switzerland;
| | - Laura Nyström
- Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 9, 8092 Zurich, Switzerland;
| | - Christophe M. Courtin
- Laboratory of Food Chemistry and Biochemistry, KU Leuven, 3001 Leuven, Belgium; (Y.D.B.); (C.M.C.)
| | - Kati Katina
- Department of Food and Nutrition, University of Helsinki, P.O. Box 66, FI-00014 Helsinki, Finland; (N.M.-S.); (K.K.)
| | - Kaisa Poutanen
- VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 Espoo, Finland; (O.M.); (K.P.)
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Redondo-Puente M, Mateos R, Seguido MA, García-Cordero J, González S, Tarradas RM, Bravo-Clemente L, Sarriá B. Appetite and Satiety Effects of the Acute and Regular Consumption of Green Coffee Phenols and Green Coffee Phenol/Oat β-Glucan Nutraceuticals in Subjects with Overweight and Obesity. Foods 2021; 10:2511. [PMID: 34828792 PMCID: PMC8622553 DOI: 10.3390/foods10112511] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/29/2021] [Accepted: 10/17/2021] [Indexed: 12/17/2022] Open
Abstract
Green coffee has weight management properties, yet its effects on appetite and satiety remain unclear as few, mainly acute, studies perform objective measurements. Therefore, the influence on appetite/satiety of acute and regular consumption of two nutraceuticals, a decaffeinated green coffee phenolic extract (GC) alone or combined with oat β-glucans (GC/BG), with known satiating properties, has been analysed subjectively using visual analog scales (VAS) and objectively measuring actual food intake and postprandial appetite and satiety hormones. A randomised, cross-over, blind trial was carried out in 29 overweight volunteers who consumed GC or GC/BG twice a day for 8 weeks. After acute (day = 0) and regular consumption (day = 56) of the nutraceuticals, satiety was measured at 30, 60, 90, 150, and 210 min, as well as food intake at breakfast (30 min) and lunch (300 min). Additionally, in a subgroup of participants (n = 9), cholecystokinin, peptide-YY, glucagon-like-peptide-1, ghrelin and leptin concentrations were analysed in blood samples taken at the same time-points. According to VAS results, GC/BG reduced hunger more efficiently than GC. However, there were no statistically significant differences in food intake. Comparing the effects of the acute consumption of GC/BG and GC, leptin concentration at 150 min was higher after GC/BG intake vs. GC. Moreover, when comparing the effects of regularly consuming the two nutraceuticals, maximum ghrelin level decreased with GC/BG vs. GC. In conclusion, acute and regular effects of the nutraceuticals on appetite/satiety differed, and subjective and objective results partially agreed; GC/BG may reduce hunger more efficiently than GC.
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Affiliation(s)
| | | | | | | | | | | | | | - Beatriz Sarriá
- Department of Metabolism and Nutrition, Institute of Food Science, Technology and Nutrition (ICTAN-CSIC), Spanish National Research Council (CSIC), José Antonio Nováis 10, 28040 Madrid, Spain; (M.R.-P.); (R.M.); (M.A.S.); (J.G.-C.); (S.G.); (R.M.T.); (L.B.-C.)
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35
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Murphy DM, Mills KHG, Basdeo SA. The Effects of Trained Innate Immunity on T Cell Responses; Clinical Implications and Knowledge Gaps for Future Research. Front Immunol 2021; 12:706583. [PMID: 34489958 PMCID: PMC8417102 DOI: 10.3389/fimmu.2021.706583] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 07/30/2021] [Indexed: 12/16/2022] Open
Abstract
The burgeoning field of innate immune training, also called trained immunity, has given immunologists new insights into the role of innate responses in protection against infection and in modulating inflammation. Moreover, it has led to a paradigm shift in the way we think about immune memory and the interplay between innate and adaptive immune systems in conferring immunity against pathogens. Trained immunity is the term used to describe the medium-term epigenetic and metabolic reprogramming of innate immune cells in peripheral tissues or in the bone marrow stem cell niche. It is elicited by an initial challenge, followed by a significant period of rest that results in an altered response to a subsequent, unrelated challenge. Trained immunity can be associated with increased production of proinflammatory mediators, such as IL-1β, TNF and IL-6, and increased expression of markers on innate immune cells associated with antigen presentation to T cells. The microenvironment created by trained innate immune cells during the secondary challenge may have profound effects on T cell responses, such as altering the differentiation, polarisation and function of T cell subtypes, including Th17 cells. In addition, the Th1 cytokine IFN-γ plays a critical role in establishing trained immunity. In this review, we discuss the evidence that trained immunity impacts on or can be impacted by T cells. Understanding the interplay between innate immune training and how it effects adaptive immunity will give insights into how this phenomenon may affect the development or progression of disease and how it could be exploited for therapeutic interventions or to enhance vaccine efficacy.
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Affiliation(s)
- Dearbhla M Murphy
- Human and Translational Immunology Group, Department of Clinical Medicine, Trinity Translational Medicine Institute, St James's Hospital, Trinity College Dublin, The University of Dublin, Dublin, Ireland
| | - Kingston H G Mills
- Immune Regulation Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, Dublin, Ireland
| | - Sharee A Basdeo
- Human and Translational Immunology Group, Department of Clinical Medicine, Trinity Translational Medicine Institute, St James's Hospital, Trinity College Dublin, The University of Dublin, Dublin, Ireland
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Kiss A, Grünvald P, Ladányi M, Papp V, Papp I, Némedi E, Mirmazloum I. Heat Treatment of Reishi Medicinal Mushroom ( Ganoderma lingzhi) Basidiocarp Enhanced Its β-glucan Solubility, Antioxidant Capacity and Lactogenic Properties. Foods 2021; 10:2015. [PMID: 34574127 PMCID: PMC8466132 DOI: 10.3390/foods10092015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 11/18/2022] Open
Abstract
The effect of heat treatment on dried fruiting bodies of Reishi medicinal mushroom (Ganoderma lingzhi) is investigated. Control and samples treated for 20 min at temperatures of 70, 120, 150 and 180 °C were subjected for their free radical scavenging capacity, different glucans and total phenolic content determination. The growth rate of Escherichia coli and Lactobacillus casei supplemented with control and heat-treated samples is also investigated. The roasted mushroom samples at 150 °C and 180 °C showed the highest level of β-glucan (37.82%) and free radical scavenging capacity on 2,2-diphenyl-1-picrylhidrazyl (DPPH•) and 2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS•+). The content of total phenolics (TPC) was also influenced by heat treatment and significantly higher TPC values were recorded in samples treated at 120 °C and 150 °C. The presence of reducing sugars was only detected after heat treatment at 150 °C (0.23%) and at 180 °C (0.57%). The heat treatments at 120, 150 and 180 °C, significantly attenuated the number of colony-forming units (CFU) of pathogenic E. coli, in a linear relationship with an elevated temperature. The supplementation of heat-treated Reishi mushroom at 120 °C resulted in the highest growth rate of probiotic L. casei. The obtained results in this study revealed the significant effect of short-term heat treatment by enhancing the antioxidant capacity, β-glucan solubility and prebiotic property of the dried basidiocarp of Reishi mushroom.
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Affiliation(s)
- Attila Kiss
- Agro-Food Science Techtransfer and Innovation Centre, Faculty for Agro-, Food- and Environmental Science, Debrecen University, 4032 Debrecen, Hungary
| | - Petra Grünvald
- Department of Farm Animal Nutrition, Institute of Animal Physiology and Animal Nutrition, Hungarian University of Agriculture and Life Sciences, H-7400 Kaposvár, Hungary
| | - Márta Ladányi
- Department of Applied Statistics, Institute of Mathematics and Basic Science, Hungarian University of Agriculture and Life Sciences, Villányi Str. 29-43, H-1118 Budapest, Hungary
| | - Viktor Papp
- Department of Botany, Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Ménesi Str. 44, H-1118 Budapest, Hungary
| | - István Papp
- Department of Plant Physiology and Plant Ecology, Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Ménesi Str. 44, H-1118 Budapest, Hungary
| | | | - Iman Mirmazloum
- Department of Plant Physiology and Plant Ecology, Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Ménesi Str. 44, H-1118 Budapest, Hungary
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37
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Kaminski K, Skora M, Krzyściak P, Stączek S, Zdybicka-Barabas A, Cytryńska M. Synthesis and Study of Antifungal Properties of New Cationic Beta-Glucan Derivatives. Pharmaceuticals (Basel) 2021; 14:838. [PMID: 34577538 DOI: 10.3390/ph14090838] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 07/20/2021] [Revised: 08/18/2021] [Accepted: 08/23/2021] [Indexed: 01/12/2023] Open
Abstract
The interaction of positively charged polymers (polycations) with a biological membrane is considered to be the cause of the frequently observed toxicity of these macromolecules. If it is possible to obtain polymers with a predominantly negative effect on bacterial and fungal cells, such systems would have great potential in the treatment of infectious diseases, especially now when reports indicate the growing risk of fungal co-infections in COVID-19 patients. We describe in this article cationic derivatives of natural beta-glucan polymers obtained by reacting the polysaccharide isolated from Saccharomyces boulardii (SB) and Cetraria islandica (CI) with glycidyl trimethyl ammonium chloride (GTMAC). Two synthesis strategies were applied to optimize the product yield. Fungal diseases particularly affect low-income countries, hence the emphasis on the simplicity of the synthesis of such drugs so they can be produced without outside help. The three structures obtained showed selective anti-mycotic properties (against, i.e., Scopulariopsis brevicaulis, Aspergillus brasiliensis, and Fusarium solani), and their toxicity established using fibroblast 3T3-L1 cell line was negligible in a wide range of concentrations. For one of the polymers (SB derivative), using in vivo model of Aspergillus brasiliensis infection in Galleria mellonella insect model, we confirmed the promising results obtained in the preliminary study.
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38
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Cornet V, Khuyen TD, Mandiki SNM, Betoulle S, Bossier P, Reyes-López FE, Tort L, Kestemont P. GAS1: A New β-Glucan Immunostimulant Candidate to Increase Rainbow Trout ( Oncorhynchus mykiss) Resistance to Bacterial Infections With Aeromonas salmonicida achromogenes. Front Immunol 2021; 12:693613. [PMID: 34295335 PMCID: PMC8290837 DOI: 10.3389/fimmu.2021.693613] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 06/18/2021] [Indexed: 11/27/2022] Open
Abstract
β-glucans are prebiotic and/or food additives used by the aquaculture industry to enhance the immune response of fish. Their efficiency may vary according to their origin and structure. In this study, the immunostimulant effects of two β-glucan types extracted from wild-type baker’s yeast (Saccharomyces cerevisiae) and its null-mutant Gas1 were investigated. Gas1 has a beta-1,3-glucanosyltransferase activity necessary for cell wall assembly. Using a positive (commercial product MacroGard®) and a negative control (a diet without glucans), we evaluated the immune responses and disease resistance of rainbow trout juveniles (mean weight, ~44 g) fed control, low (0.2%) and high (0.5%) doses of Macrogard®, Gas1, and Wild type-β-glucan after a short-term (15 days, D15) or mid-term (36 days, D36) feeding periods. We found that β-glucan supplemented diets did not affect growth performance, mortality, splenic index, or leukocyte respiratory burst activity on D15 nor D36. However, each β-glucan triggered different immune effectors, depending of the doses or length of exposure compared to others and/or the negative control. Indeed, high dose of MacroGard® significantly increased lysozyme activities at D15 compared with the control and other diets (p<0.05). At D36, MacroGard β-glucan enhanced the production of lymphocytes in comparison with the control diet (p<0.05). Regarding WT β-glucan, at D36, WT-β-glucan, especially the high dose, provided the highest enzymatic activities (lysozyme and ACH50) and Ig level (p<0.01). Furthermore, on D36, Gas1 also increased lysozyme activity, Ig proportion, and some immune genes (mcsfra, hepcidin) compared with MacroGard® (p<0.05). Besides, both doses of Gas1-β-glucans increased the resistance of juveniles to bacterial infection highlighted by a higher survival rate at 14 days post-challenge compared with the control and other types and doses of β-glucans (p<0.05). In conclusion, our results suggest that Gas1-β-glucan could represent a promising immunostimulant that would help to prevent diseases in aquaculture even more efficiently than other β-glucans already in use. Mode of action and particular efficiency of this new Gas1 mutant are debated.
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Affiliation(s)
- Valérie Cornet
- Research Unit in Environmental and Evolutionary Biology (URBE), Research Institute of Life, Earth & Environment, University of Namur (UNamur), Namur, Belgium
| | - Trinh Dinh Khuyen
- Research Unit in Environmental and Evolutionary Biology (URBE), Research Institute of Life, Earth & Environment, University of Namur (UNamur), Namur, Belgium
| | - Syaghalirwa N M Mandiki
- Research Unit in Environmental and Evolutionary Biology (URBE), Research Institute of Life, Earth & Environment, University of Namur (UNamur), Namur, Belgium
| | - Stéphane Betoulle
- UMR-INERIS 02 SEBIO StressEnvironnementaux et Biosurveillance des milieux aquatiques, Plateau technique mobile en cytométrie environnementale MOBICYTE, UFR Sciences Exactes et Naturelles, Université de Reims Champagne-Ardenne, Reims, France
| | - Peter Bossier
- Laboratory of Aquaculture & Artemia Reference Center, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Felipe E Reyes-López
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Bellaterra, Spain.,Consorcio Tecnológico de Sanidad Acuícola, Ictio Biotechnologies S.A., Santiago, Chile.,Facultad de Medicina Veterinaria y Agronomía, Universidad de Las Américas, Providencia, Chile
| | - Lluis Tort
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Patrick Kestemont
- Research Unit in Environmental and Evolutionary Biology (URBE), Research Institute of Life, Earth & Environment, University of Namur (UNamur), Namur, Belgium
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Wolever TMS, Rahn M, Dioum EH, Jenkins AL, Ezatagha A, Campbell JE, Chu Y. Effect of Oat β-Glucan on Affective and Physical Feeling States in Healthy Adults: Evidence for Reduced Headache, Fatigue, Anxiety and Limb/Joint Pains. Nutrients 2021; 13:1534. [PMID: 34062937 PMCID: PMC8147290 DOI: 10.3390/nu13051534] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/25/2021] [Accepted: 04/29/2021] [Indexed: 01/07/2023] Open
Abstract
The gastrointestinal (GI) side-effects of dietary fibers are recognized, but less is known about their effects on non-GI symptoms. We assessed non-GI symptoms in a trial of the LDL-cholesterol lowering effect of oat β-glucan (OBG). Participants (n = 207) with borderline high LDL-cholesterol were randomized to an OBG (1 g OBG, n = 104, n = 96 analyzed) or Control (n = 103, n = 95 analyzed) beverage 3-times daily for 4 weeks. At screening, baseline, 2 weeks and 4 weeks participants rated the severity of 16 non-GI symptoms as none, mild, moderate or severe. The occurrence and severity (more or less severe than pre-treatment) were compared using chi-squared and Fisher's exact test, respectively. During OBG treatment, the occurrence of exhaustion and fatigue decreased versus baseline (p < 0.05). The severity of headache (2 weeks, p = 0.032), anxiety (2 weeks p = 0.059) and feeling cold (4 weeks, p = 0.040) were less on OBG than Control. The severity of fatigue and hot flashes at 4 weeks, limb/joint pain at 2 weeks and difficulty concentrating at both times decreased on OBG versus baseline. High serum c-reactive-protein and changes in c-reactive-protein, oxidized-LDL, and GI-symptom severity were associated with the occurrence and severity of several non-GI symptoms. These data provide preliminary, hypothesis-generating evidence that OBG may reduce several non-GI symptoms in healthy adults.
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Affiliation(s)
- Thomas M. S. Wolever
- Formerly GI Labs, INQUIS Clinical Research, Ltd., Toronto, ON M5C 2N8, Canada; (A.L.J.); (A.E.); (J.E.C.)
| | - Maike Rahn
- Quaker Oats Center of Excellence, PepsiCo R&D Nutrition, Barrington, IL 60010, USA; (M.R.); (E.H.D.); (Y.C.)
| | - El Hadji Dioum
- Quaker Oats Center of Excellence, PepsiCo R&D Nutrition, Barrington, IL 60010, USA; (M.R.); (E.H.D.); (Y.C.)
| | - Alexandra L. Jenkins
- Formerly GI Labs, INQUIS Clinical Research, Ltd., Toronto, ON M5C 2N8, Canada; (A.L.J.); (A.E.); (J.E.C.)
| | - Adish Ezatagha
- Formerly GI Labs, INQUIS Clinical Research, Ltd., Toronto, ON M5C 2N8, Canada; (A.L.J.); (A.E.); (J.E.C.)
| | - Janice E. Campbell
- Formerly GI Labs, INQUIS Clinical Research, Ltd., Toronto, ON M5C 2N8, Canada; (A.L.J.); (A.E.); (J.E.C.)
| | - YiFang Chu
- Quaker Oats Center of Excellence, PepsiCo R&D Nutrition, Barrington, IL 60010, USA; (M.R.); (E.H.D.); (Y.C.)
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40
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Desamero MJM, Chung SH, Kakuta S. Insights on the Functional Role of Beta-Glucans in Fungal Immunity Using Receptor-Deficient Mouse Models. Int J Mol Sci 2021; 22:4778. [PMID: 33946381 PMCID: PMC8125483 DOI: 10.3390/ijms22094778] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/21/2021] [Accepted: 04/27/2021] [Indexed: 12/18/2022] Open
Abstract
Understanding the host anti-fungal immunity induced by beta-glucan has been one of the most challenging conundrums in the field of biomedical research. During the last couple of decades, insights on the role of beta-glucan in fungal disease progression, susceptibility, and resistance have been greatly augmented through the utility of various beta-glucan cognate receptor-deficient mouse models. Analysis of dectin-1 knockout mice has clarified the downstream signaling pathways and adaptive effector responses triggered by beta-glucan in anti-fungal immunity. On the other hand, assessment of CR3-deficient mice has elucidated the compelling action of beta-glucans in neutrophil-mediated fungal clearance, and the investigation of EphA2-deficient mice has highlighted its novel involvement in host sensing and defense to oral mucosal fungal infection. Based on these accounts, this review focuses on the recent discoveries made by these gene-targeted mice in beta-glucan research with particular emphasis on the multifaceted aspects of fungal immunity.
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Affiliation(s)
- Mark Joseph Maranan Desamero
- Laboratory of Biomedical Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan;
- Department of Basic Veterinary Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, Laguna 4031, Philippines
| | - Soo-Hyun Chung
- Division of Experimental Animal Immunology, Research Institute for Biomedical Sciences, Tokyo University of Science, 2669 Yamazaki, Noda, Chiba 278-0022, Japan;
| | - Shigeru Kakuta
- Laboratory of Biomedical Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan;
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41
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Lamoth F, Akan H, Andes D, Cruciani M, Marchetti O, Ostrosky-Zeichner L, Racil Z, Clancy CJ. Assessment of the Role of 1,3-β-d-Glucan Testing for the Diagnosis of Invasive Fungal Infections in Adults. Clin Infect Dis 2021; 72:S102-S108. [PMID: 33709130 DOI: 10.1093/cid/ciaa1943] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Detection of 1,3-β-d-glucan (BDG) in serum has been evaluated for its inclusion as a mycological criterion of invasive fungal infections (IFI) according to EORTC and Mycoses Study Group (MSG) definitions. BDG testing may be useful for the diagnosis of both invasive aspergillosis and invasive candidiasis, when interpreted in conjunction with other clinical/radiological signs and microbiological markers of IFI. However, its performance and utility vary according to patient population (hematologic cancer patients, solid-organ transplant recipients, intensive care unit patients) and pretest likelihood of IFI. The objectives of this article are to provide a systematic review of the performance of BDG testing and to assess recommendations for its use and interpretation in different clinical settings.
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Affiliation(s)
- F Lamoth
- Infectious Diseases Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - H Akan
- Ankara University, Faculty of Medicine, Cebeci Campus, Hematology Clinical Research Unit, Ankara, Turkey
| | - D Andes
- Department of Medicine and Microbiology and Immunology, University of Wisconsin, Madison, Wisconsin, USA
| | - M Cruciani
- Infectious Diseases Unit, G. Fracastoro Hospital, San Bonifacio, Verona, Italy
| | - O Marchetti
- Infectious Diseases Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- Department of Medicine, Ensemble Hospitalier de La Côte, Morges, Switzerland
| | - L Ostrosky-Zeichner
- Division of Infectious Diseases, McGovern Medical School, Houston, Texas, USA
| | - Z Racil
- Institute of Hematology and Blood Transfusion, Prague, Czech Republic
| | - C J Clancy
- Division of Infectious Diseases, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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42
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Malunga LN, Ames N, Zhouyao H, Blewett H, Thandapilly SJ. Beta-Glucan From Barley Attenuates Post-prandial Glycemic Response by Inhibiting the Activities of Glucose Transporters but Not Intestinal Brush Border Enzymes and Amylolysis of Starch. Front Nutr 2021; 8:628571. [PMID: 33937305 PMCID: PMC8085267 DOI: 10.3389/fnut.2021.628571] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 03/18/2021] [Indexed: 11/29/2022] Open
Abstract
Beta (β)-glucan (BG) from cereal grains is associated with lowering post-prandial blood glucose but the precise mechanism is not well-elucidated. The main aim of this study was to understand the mechanism through which BG from barley affects post-prandial glycemic response. Waffles containing 0, 1, 2, and 3 g barley BG and the same amount of available carbohydrate (15 g) were fed to the TIM-1 dynamic gastrointestinal digestion system to study the effect of BG on starch hydrolysis. Intestinal acetone powder and Xenopus laevis oocytes were used to study BG's effect on mammalian intestinal α-glucosidase and glucose transporters. The presence of BG did not significantly affect the in vitro starch digestion profiles of waffles suggesting that BG does not affect α-amylase activity. Intestinal α-glucosidase and glucose transport activities were significantly (p < 0.0001) inhibited in the presence of barley BG. Interestingly, BG viscosity did not influence α-amylase, α-glucosidase, GLUT2, and SGLT1 activities. This study provides the first evidence for the mechanism by which BG from barley attenuates post-prandial glycemic response is via alteration of α-glucosidase, GLUT2, and SGLT1 activity, but not amylolysis of starch. The decrease in post-prandial blood glucose in the presence of BG is likely a consequence of the interaction between BG and membrane active proteins (brush border enzymes and glucose transporters) as opposed to the commonly held hypothesis that increased viscosity caused by BG inhibits starch digestion.
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Affiliation(s)
- Lovemore Nkhata Malunga
- Richardson Center for Functional Foods and Nutraceuticals, Agriculture and Agri-Food Canada, Winnipeg, MB, Canada.,Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada.,Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
| | - Nancy Ames
- Richardson Center for Functional Foods and Nutraceuticals, Agriculture and Agri-Food Canada, Winnipeg, MB, Canada.,Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada.,Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
| | - Haonan Zhouyao
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Heather Blewett
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada.,Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada.,Canadian Centre for Agri-Food Research in Health and Medicine (CCARM), St Boniface Hospital Research Centre, Winnipeg, MB, Canada
| | - Sijo Joseph Thandapilly
- Richardson Center for Functional Foods and Nutraceuticals, Agriculture and Agri-Food Canada, Winnipeg, MB, Canada.,Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada.,Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
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43
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Duysburgh C, Van den Abbeele P, Kamil A, Fleige L, De Chavez PJ, Chu Y, Barton W, O'Sullivan O, Cotter PD, Quilter K, Joyce SA, Murphy M, DunnGalvin G, Dinan TG, Marzorati M. In vitro-in vivo Validation of Stimulatory Effect of Oat Ingredients on Lactobacilli. Pathogens 2021; 10:235. [PMID: 33669689 DOI: 10.3390/pathogens10020235] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 12/24/2020] [Revised: 02/09/2021] [Accepted: 02/11/2021] [Indexed: 02/06/2023] Open
Abstract
The prebiotic activity of a commercially available oat product and a novel oat ingredient, at similar β-glucan loads, was tested using a validated in vitro gut model (M-SHIME®). The novel oat ingredient was tested further at lower β-glucan loads in vitro, while the commercially available oat product was assessed in a randomised, single-blind, placebo-controlled, and cross-over human study. Both approaches focused on healthy individuals with mild hypercholesterolemia. In vitro analysis revealed that both oat products strongly stimulated Lactobacillaceae and Bifidobacteriaceae in the intestinal lumen and the simulated mucus layer, and corresponded with enhanced levels of acetate and lactate with cross-feeding interactions leading to an associated increase in propionate and butyrate production. The in vitro prebiotic activity of the novel oat ingredient remained at lower β-glucan levels, indicating the prebiotic potential of the novel oat product. Finally, the stimulation of Lactobacillus spp. was confirmed during the in vivo trial, where lactobacilli abundance significantly increased in the overall population at the end of the intervention period with the commercially available oat product relative to the control product, indicating the power of in vitro gut models in predicting in vivo response of the microbial community to dietary modulation.
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Abstract
Coronary heart disease (CHD) is the leading cause of death globally. Consumption of whole grains and cereal fiber, as part of a healthy diet, can lower the risk of CHD. Health claims on food products are effective in helping consumers select healthful diets. The US Food and Drug Administration was the first to approve a health claim, in 1997, between beta-glucan soluble fiber from whole oats, oat bran, and whole oat flour and reduced risk of CHD. Only a few countries have approved similar claims. Since 1997, a significant amount of additional evidence has been published on the relationship between oat beta-glucan and CHD. To assist other jurisdictions in potentially utilizing this claim, the full extent of data that supports this claim (ie, the evidence utilized by the US Food and Drug Administration to substantiate the claim, as well as the results of 49 clinical trials published since 1997) are reviewed here. The complexities involved in authoring evidence-based health claims, including the impact of processing on beta-glucan cholesterol-lowering efficacy in approving eligible beta-glucan products, are also discussed.
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Tamura K, Dejean G, Van Petegem F, Brumer H. Distinct protein architectures mediate species-specific beta-glucan binding and metabolism in the human gut microbiota. J Biol Chem 2021; 296:100415. [PMID: 33587952 PMCID: PMC7974029 DOI: 10.1016/j.jbc.2021.100415] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/02/2021] [Accepted: 02/10/2021] [Indexed: 12/12/2022] Open
Abstract
Complex glycans that evade our digestive system are major nutrients that feed the human gut microbiota (HGM). The prevalence of Bacteroidetes in the HGM of populations worldwide is engendered by the evolution of polysaccharide utilization loci (PULs), which encode concerted protein systems to utilize the myriad complex glycans in our diets. Despite their crucial roles in glycan recognition and transport, cell-surface glycan-binding proteins (SGBPs) remained understudied cogs in the PUL machinery. Here, we report the structural and biochemical characterization of a suite of SGBP-A and SGBP-B structures from three syntenic β(1,3)-glucan utilization loci (1,3GULs) from Bacteroides thetaiotaomicron (Bt), Bacteroides uniformis (Bu), and B. fluxus (Bf), which have varying specificities for distinct β-glucans. Ligand complexes provide definitive insight into β(1,3)-glucan selectivity in the HGM, including structural features enabling dual β(1,3)-glucan/mixed-linkage β(1,3)/β(1,4)-glucan-binding capability in some orthologs. The tertiary structural conservation of SusD-like SGBPs-A is juxtaposed with the diverse architectures and binding modes of the SGBPs-B. Specifically, the structures of the trimodular BtSGBP-B and BuSGBP-B revealed a tandem repeat of carbohydrate-binding module-like domains connected by long linkers. In contrast, BfSGBP-B comprises a bimodular architecture with a distinct β-barrel domain at the C terminus that bears a shallow binding canyon. The molecular insights obtained here contribute to our fundamental understanding of HGM function, which in turn may inform tailored microbial intervention therapies.
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Affiliation(s)
- Kazune Tamura
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada; Department of Biochemistry and Molecular Biology, The Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Guillaume Dejean
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada
| | - Filip Van Petegem
- Department of Biochemistry and Molecular Biology, The Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Harry Brumer
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada; Department of Biochemistry and Molecular Biology, The Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada; Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada.
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46
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Finkelman MA. Specificity Influences in (1→3)-β-d-Glucan-Supported Diagnosis of Invasive Fungal Disease. J Fungi (Basel) 2020; 7:14. [PMID: 33383818 DOI: 10.3390/jof7010014] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [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: 11/26/2020] [Revised: 12/17/2020] [Accepted: 12/21/2020] [Indexed: 12/12/2022] Open
Abstract
(1→3)-β-glucan (BDG) testing as an adjunct in the diagnosis of invasive fungal disease (IFD) has been in use for nearly three decades. While BDG has a very high negative predictive value in this setting, diagnostic false positives may occur, limiting specificity and positive predictive value. Although results may be diagnostically false positive, they are analytically correct, due to the presence of BDG in the circulation. This review surveys the non-IFD causes of elevated circulating BDG. These are in the main, iatrogenic patient contamination through the use of BDG-containing medical devices and parenterally-delivered materials as well as translocation of intestinal luminal BDG due to mucosal barrier injury. Additionally, infection with Nocardia sp. may also contribute to elevated circulating BDG. Knowledge of the factors which may contribute to such non-IFD-related test results can improve the planning and interpretation of BDG assays and permit investigational strategies, such as serial sampling and BDG clearance evaluation, to assess the likelihood of contamination and improve patient care.
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Hwang IS, Chon SY, Bang WS, Kim MK. Influence of Roasting Temperatures on the Antioxidant Properties, β-Glucan Content, and Volatile Flavor Profiles of Shiitake Mushroom. Foods 2020; 10:foods10010054. [PMID: 33379207 PMCID: PMC7824100 DOI: 10.3390/foods10010054] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/23/2020] [Accepted: 12/24/2020] [Indexed: 11/16/2022] Open
Abstract
The objective of this study was to determine the influence of roasting conditions on the volatile flavor profiles and functional properties of shiitake mushrooms. Six different roasting temperatures between 80 °C and 180 °C with 20 °C increments were selected, and mushrooms were roasted for 60 min in a conventional oven. Roasting shiitake mushroom at 140 °C showed the highest levels of antioxidant activities including 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picrylhidrazyl (DPPH) radical scavenging activities, total phenols and polyphenol contents. The β-glucan ranged from 34.85% to 41.49%, and it was highest when the mushrooms were roasted at 120 °C, followed by 140 °C. Instrumental flavor analysis was conducted by Gas Chromatography using Purge and Trap, and identification of compounds were produced by NIST library. Twenty-six volatile flavor compounds were identified. The concentrations of pyrazines and furans increased with increased roasting temperatures. Shiitake mushrooms roasted at 160 °C for 60 min had the most diverse volatile flavor compound profiles. This study revealed how roasting temperatures can modulate antioxidant, functional (β-glucan) and flavor benefits.
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Affiliation(s)
- In-Seo Hwang
- Department of Food Science and Human Nutrition and Fermented Food Research Center, Jeonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju-si 54896, Jeonbuk , Korea; (I.-S.H.); (S.-Y.C.)
| | - Seo-Yeong Chon
- Department of Food Science and Human Nutrition and Fermented Food Research Center, Jeonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju-si 54896, Jeonbuk , Korea; (I.-S.H.); (S.-Y.C.)
| | - Woo-Suk Bang
- Department of Food and Nutrition, Yeungnam University, 280, Daehak-ro, Gyeongsan 712-749, Korea
- Correspondence: (W.-S.B.); (M.K.K.); Tel.: +82-63-270-3879
| | - Mina K. Kim
- Department of Food Science and Human Nutrition and Fermented Food Research Center, Jeonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju-si 54896, Jeonbuk , Korea; (I.-S.H.); (S.-Y.C.)
- Correspondence: (W.-S.B.); (M.K.K.); Tel.: +82-63-270-3879
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Lee K, Min D, Choi Y, Yoon S, Jang J, Hwang J, Jeon H, Cho YW, Choi J. Self-Assembling β-Glucan Nanomedicine for the Delivery of siRNA. Biomedicines 2020; 8:E497. [PMID: 33198404 DOI: 10.3390/biomedicines8110497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 09/19/2020] [Revised: 11/09/2020] [Accepted: 11/09/2020] [Indexed: 12/11/2022] Open
Abstract
We aimed to design and manufacture a transporter capable of delivering small interfering RNAs (siRNAs) into the skin without causing any damage. β-glucans are unique chiral polysaccharides with well-defined immunological properties and supramolecular wrapping ability. However, the chiral properties of these polymers have hardly been applied in drug delivery systems. In this study, β-glucan nanoparticles were designed and manufactured to deliver genetic material to the target cells. The β-glucan molecules were self-assembled with an siRNA into nanoparticles of 300–400 nm in diameter via a conformational transition process, in order to construct a gene delivery system. The assembled gene nanocarriers were associated with high gene-loading ability. The expression and efficiency of siRNA were verified after its delivery via β-glucan. Our results provide evidence that β-glucan nanoparticles can be effectively used to deliver siRNA into the cells.
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Karunaratne ND, Newkirk RW, van Kessel AG, Bedford MR, Classen HL. Hulless barley and beta-glucanase levels in the diet affect the performance of coccidiosis-challenged broiler chickens in an age-dependent manner. Poult Sci 2020; 100:776-787. [PMID: 33518132 PMCID: PMC7858129 DOI: 10.1016/j.psj.2020.10.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 10/21/2020] [Accepted: 10/27/2020] [Indexed: 11/30/2022] Open
Abstract
Diet β-glucanase (BGase) depolymerizes viscous β-glucan into lower molecular weight carbohydrates, which might act as a prebiotic in chickens exposed to enteric disease. Coccidiosis-challenged broiler chickens were fed graded levels of hulless barley (HB) and BGase to determine their effects on growth performance. Broilers were fed high β-glucan HB (CDC Fibar; 0, 30, and 60% replacing wheat) and BGase (Econase GT 200P; 0, 0.01, and 0.1%) in a 3 × 3 factorial arrangement. A total of 5,346 broilers were raised in litter floor pens and vaccinated for coccidiosis in feed and water on day 5. Each treatment was assigned to 1 pen (66 birds) in each of 9 rooms. Statistical significance was set at P ≤ 0.05. Overall, HB decreased body weight gain (BWG) and increased feed: gain ratio (F:G) of broilers. From day 0 to 11, BGase did not affect BWG and F:G, at the 0 and 30% HB. However, at 60% HB, the 0.01% BGase improved them, and the 0.1% BGase had no effect on BWG and increased F:G. For the day 22 to 32 and 0 to 32 periods, BGase did not affect BWG for 0 and 30% HB levels, but for the 60% HB, both BGase levels increased gain. The 0.1% level of BGase resulted in the lowest F:G for all HB levels, with the degree of response increasing with HB. No interaction was found for ileal digesta viscosity at day 11; the level of HB did not affect viscosity, but both levels of BGase decreased viscosity. At day 33, BGase did not affect viscosity at 0 and 30% HB levels, but viscosity was lowered for the 0.1% BGase treatment at the 60% HB level. In conclusion, HB reduced broiler performance, and BGase alleviated most but not all the effects. In young birds fed 60% HB, 0.1% BGase did not impact BWG and increased F:G.
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Affiliation(s)
- Namalika D Karunaratne
- Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, SK S7N5A8, Canada
| | - Rex W Newkirk
- Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, SK S7N5A8, Canada.
| | - Andrew G van Kessel
- Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, SK S7N5A8, Canada
| | | | - Henry L Classen
- Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, SK S7N5A8, Canada
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Holstein M, Jang D, Urrea C, Botta LS, Grimm W, Ghose S, Li ZJ. Control of leached beta-glucan levels from depth filters by an improved depth filtration flush strategy. Biotechnol Prog 2020; 37:e3086. [PMID: 33016571 DOI: 10.1002/btpr.3086] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 02/20/2020] [Revised: 09/17/2020] [Accepted: 09/28/2020] [Indexed: 11/10/2022]
Abstract
Beta-glucans are polysaccharides of D-glucose monomers linked by (1-3) beta-glycosidic bonds, are found to have a potential immunogenicity risk in biotherapeutic products, and are labeled as process contaminants. A common source of beta-glucans is from the cellulose found in traditional depth filter media. Typically, beta-glucan impurities that leach into the product from the primary clarification depth filters can be removed by the subsequent bind-and-elute affinity chromatography capture step. Beta-glucans can also be removed by a bind-and-elute cation exchange chromatography step, which is useful for removing beta-glucans introduced by a post-Protein A depth filtration step. However, the increasing prevalence of flowthrough polishing chromatography poses a challenge for beta-glucan removal due to the lack of any bind-and-elute chromatography steps after the post-Protein A depth filter. In this work, a depth filter flush strategy was developed to control beta-glucan leaching into the product pool. Different loading conditions for the depth filtration and subsequent chromatography steps were evaluated to determine the robustness of the optimized flush strategy. Carry through runs demonstrated greater than two-fold reduction in beta-glucan levels using the optimized wash as compared to standard filter flush conditions.
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Affiliation(s)
- Melissa Holstein
- Biologics Process Development, Global Product Development and Supply, Bristol-Myers Squibb Co., Devens, Massachusetts, USA
| | - Dongyoun Jang
- Biologics Process Development, Global Product Development and Supply, Bristol-Myers Squibb Co., Devens, Massachusetts, USA
| | - Christine Urrea
- Biologics Process Development, Global Product Development and Supply, Bristol-Myers Squibb Co., Devens, Massachusetts, USA
| | - Lakshmi Sirisha Botta
- Biologics Process Development, Global Product Development and Supply, Bristol-Myers Squibb Co., Devens, Massachusetts, USA
| | - William Grimm
- Biologics Process Development, Global Product Development and Supply, Bristol-Myers Squibb Co., Devens, Massachusetts, USA
| | - Sanchayita Ghose
- Biologics Process Development, Global Product Development and Supply, Bristol-Myers Squibb Co., Devens, Massachusetts, USA
| | - Zheng Jian Li
- Biologics Process Development, Global Product Development and Supply, Bristol-Myers Squibb Co., Devens, Massachusetts, USA
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