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Cappellucci G, Baini G, Miraldi E, Pauletto L, De Togni H, Raso F, Biagi M. Investigation on the Efficacy of Two Food Supplements Containing a Fixed Combination of Selected Probiotics and β-Glucans or Elderberry Extract for the Immune System: Modulation on Cytokines Expression in Human THP-1 and PBMC. Foods 2024; 13:458. [PMID: 38338593 PMCID: PMC10855234 DOI: 10.3390/foods13030458] [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: 12/29/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024] Open
Abstract
Several herbal and other natural products are used as ingredients in food supplements to strengthen immunity even if, very often, marketed products are proposed without a clear rationale or experimental evidence. In this study, we aimed to investigate the effect on human monocytes (THP-1) and on ex vivo human peripheral blood mononuclear cells (PBMC) of two formulations, one containing Bifidobacterium animalis subsp. lactis Bl-04® with β-glucans (for adults) and one containing Lactobacillus rhamnosus CRL1505 with elderberry extract (for children). We compared formulations with single ingredients, with bacterial lipopolysaccharide (LPS) and the drug pidotimod; cytokines expression level was evaluated testing different concentrations of samples at two exposure times. As expected, LPS caused a non-specific huge upregulation of cytokines expression both in THP-1 and in PBMC, whereas pidotimod mainly upregulated IL-2 in PBMC and IL-8 in THP-1. The two formulations showed a difference between a pro-inflammatory stimulus such as LPS, and also from an immunostimulant drug, such as pidotimod, as they mainly upregulated the expression of IL-6 and IL-10 in PBMC but not in THP-1, in a concentration-dependent mode. Probiotics were shown to play a major role, but β-glucans and elderberry extract exerted a synergistic activity. This work demonstrated that combining selected probiotics with other natural products having immunomodulatory properties is an interesting strategy to develop innovative formulations in the sector of food supplements.
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Affiliation(s)
- Giorgio Cappellucci
- Department of Physics, Earth and Environmental Sciences, University of Siena, 53100 Siena, Italy; (G.C.); (G.B.); (E.M.)
| | - Giulia Baini
- Department of Physics, Earth and Environmental Sciences, University of Siena, 53100 Siena, Italy; (G.C.); (G.B.); (E.M.)
| | - Elisabetta Miraldi
- Department of Physics, Earth and Environmental Sciences, University of Siena, 53100 Siena, Italy; (G.C.); (G.B.); (E.M.)
| | - Lara Pauletto
- Scientific Affairs Department Schwabe Pharma Italia, 39044 Egna, Italy; (L.P.); (H.D.T.); (F.R.)
| | - Heide De Togni
- Scientific Affairs Department Schwabe Pharma Italia, 39044 Egna, Italy; (L.P.); (H.D.T.); (F.R.)
| | - Floriana Raso
- Scientific Affairs Department Schwabe Pharma Italia, 39044 Egna, Italy; (L.P.); (H.D.T.); (F.R.)
| | - Marco Biagi
- Department of Food and Drug, University of Parma, 43124 Parma, Italy
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Santacroce L, Topi S, Charitos IA, Lovero R, Luperto P, Palmirotta R, Jirillo E. Current Views about the Inflammatory Damage Triggered by Bacterial Superantigens and Experimental Attempts to Neutralize Superantigen-Mediated Toxic Effects with Natural and Biological Products. Pathophysiology 2024; 31:18-31. [PMID: 38251046 PMCID: PMC10801599 DOI: 10.3390/pathophysiology31010002] [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: 08/16/2023] [Revised: 01/05/2024] [Accepted: 01/07/2024] [Indexed: 01/23/2024] Open
Abstract
Superantigens, i.e., staphylococcal enterotoxins and toxic shock syndrome toxin-1, interact with T cells in a different manner in comparison to conventional antigens. In fact, they activate a larger contingent of T lymphocytes, binding outside the peptide-binding groove of the major histocompatibility complex class II. Involvement of many T cells by superantigens leads to a massive release of pro-inflammatory cytokines, such as interleukin (IL)-1, IL-2, IL-6, tumor necrosis factor-alpha and interferon-gamma. Such a storm of mediators has been shown to account for tissue damage, multiorgan failure and shock. Besides conventional drugs and biotherapeutics, experiments with natural and biological products have been undertaken to attenuate the toxic effects exerted by superantigens. In this review, emphasis will be placed on polyphenols, probiotics, beta-glucans and antimicrobial peptides. In fact, these substances share a common functional denominator, since they skew the immune response toward an anti-inflammatory profile, thus mitigating the cytokine wave evoked by superantigens. However, clinical applications of these products are still scarce, and more trials are needed to validate their usefulness in humans.
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Affiliation(s)
- Luigi Santacroce
- Section of Microbiology and Virology, Interdisciplinary Department of Medicine, School of Medicine, University of Bari ‘Aldo Moro’, 70124 Bari, Italy;
| | - Skender Topi
- Department of Clinical Disciplines, University ‘Alexander Xhuvani’ of Elbasan, 3001 Elbasan, Albania
| | - Ioannis Alexandros Charitos
- Division of Pneumology and Respiratory Rehabilitation, Maugeri Clinical Scientific Research Institutes (IRCCS) of Pavia—Scientific Institute of Bari, 70124 Bari, Italy
| | - Roberto Lovero
- Clinical Pathology Unit, AOU Policlinico Consorziale di Bari-Ospedale Giovanni XXIII, 70124 Bari, Italy
| | | | - Raffaele Palmirotta
- Section of Microbiology and Virology, Interdisciplinary Department of Medicine, School of Medicine, University of Bari ‘Aldo Moro’, 70124 Bari, Italy;
| | - Emilio Jirillo
- Section of Microbiology and Virology, Interdisciplinary Department of Medicine, School of Medicine, University of Bari ‘Aldo Moro’, 70124 Bari, Italy;
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Levanič T, Cigić B, Germ M, Polišenská I, Vaculová K, Pravst I, Kocjan Ačko D, Kreft I. Differences in Ratio of Carbon Stable Isotopes among Barley Grain Milling Fractions with Various Concentrations of Beta-Glucans. Molecules 2023; 28:5738. [PMID: 37570708 PMCID: PMC10420649 DOI: 10.3390/molecules28155738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/15/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
The grains of three barley varieties were milled and sieved to obtain respective milling fractions with a content of beta-glucans (b-G) from 1.4 to 10.7%. The enriched fraction obtained by the extraction and precipitation contained 24.7% of b-G. The differences between the ratio of stable C carbon isotopes were established. Milling fractions with coarse particles had more beta-glucans and a more negative ratio of δ13C isotope in comparison to the respective intact barley grain. However, the enriched fraction had a less negative isotope ratio. So, it is not expected that the deviation from the stable isotope ratio of grain in milling fractions is the result of the content of b-G, but it depends on other barley grain constituents. In different parts of barley grain, there are substances with different stable isotope ratios, and by milling and sieving, they are assorted to the same milling fraction with most of the b-G. The method for determining the ratio of a stable carbon isotope in diverse barley grain fractions, applied in this investigation, is potentially opening the possibility for an additional method of screening the concentration of bioactive constituents in barley grain.
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Affiliation(s)
- Tom Levanič
- Slovenian Forestry Institute, Večna pot 2, SI-1000 Ljubljana, Slovenia;
| | - Blaž Cigić
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; (B.C.); (M.G.); (D.K.A.)
| | - Mateja Germ
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; (B.C.); (M.G.); (D.K.A.)
| | - Ivana Polišenská
- Agrotest Fyto, Ltd., Havlíčkova 2787, 767 01 Kroměříž, Czech Republic; (I.P.); (K.V.)
| | - Kateřina Vaculová
- Agrotest Fyto, Ltd., Havlíčkova 2787, 767 01 Kroměříž, Czech Republic; (I.P.); (K.V.)
| | - Igor Pravst
- Nutrition Institute, Koprska ulica 98, SI-1000 Ljubljana, Slovenia;
| | - Darja Kocjan Ačko
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; (B.C.); (M.G.); (D.K.A.)
| | - Ivan Kreft
- Nutrition Institute, Koprska ulica 98, SI-1000 Ljubljana, Slovenia;
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Arevalo-Gallegos A, Cuellar-Bermudez SP, Melchor-Martinez EM, Iqbal HMN, Parra-Saldivar R. Comparison of Alginate Mixtures as Wall Materials of Schizochytrium Oil Microcapsules Formed by Coaxial Electrospray. Polymers (Basel) 2023; 15:2756. [PMID: 37376402 DOI: 10.3390/polym15122756] [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: 05/17/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
This work evaluated maltodextrin/alginate and β-glucan/alginate mixtures in the food industry as wall materials for the microencapsulation of Schizochytrium sp. oil, an important source of the omega-3 fatty acid DHA (docosahexaenoic acid). Results showed that both mixtures display a shear-thinning behavior, although the viscosity is higher in β-glucan/alginate mixtures than in maltodextrin/alginate. Scanning electron microscopy was used to assess the morphology of the microcapsules, which appeared more homogeneous for maltodextrin/alginate. In addition, oil-encapsulation efficiency was higher in maltodextrin/alginate mixtures (90%) than in β-glucan/alginate mixtures (80%). Finally, evaluating the microcapsules' stability by FTIR when exposed to high temperature (80 °C) showed that maltodextrin/alginate microcapsules were not degraded contrary to the β-glucan/alginate microcapsules. Thus, although high oil-encapsulation efficiency was obtained with both mixtures, the microcapsules' morphology and prolonged stability suggest that maltodextrin/alginate is a suitable wall material for microencapsulation of Schizochytrium sp. oil.
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Affiliation(s)
- Alejandra Arevalo-Gallegos
- School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico
| | - Sara P Cuellar-Bermudez
- School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico
- Institute of Advanced Materials for Sustainable Manufacturing, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico
| | - Elda M Melchor-Martinez
- School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico
- Institute of Advanced Materials for Sustainable Manufacturing, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico
| | - Hafiz M N Iqbal
- School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico
- Institute of Advanced Materials for Sustainable Manufacturing, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico
| | - Roberto Parra-Saldivar
- School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico
- Institute of Advanced Materials for Sustainable Manufacturing, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico
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Mulec J, Skok S, Tomazin R, Letić J, Pliberšek T, Stopinšek S, Simčič S. Long-Term Monitoring of Bioaerosols in an Environment without UV and Desiccation Stress, an Example from the Cave Postojnska Jama, Slovenia. Microorganisms 2023; 11:microorganisms11030809. [PMID: 36985383 PMCID: PMC10053050 DOI: 10.3390/microorganisms11030809] [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: 02/24/2023] [Revised: 03/16/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
A natural cave environment subject to regular human visitation was selected for aerobiological study to minimize the effects of severe temperature fluctuations, UV radiation, and desiccation stress on the aerobiome. The longer sampling period of bioaerosols, up to 22 months, was generally not associated with a proportionally incremental and cumulative increase of microbial biomass. The culture-independent biomass indicator ATP enabled quick and reliable determination of the total microbial biomass. Total airborne microbial biomass was influenced by human visitation to the cave, as confirmed by significantly higher concentrations being observed along tourist footpaths (p < 0.05). Airborne beta-glucans (BG) and lipopolysaccharide (LPS) are present in cave air, but their impact on the cave remains to be evaluated. Staphylococcus spp., as an indicator of human presence, was detected at all sites studied. Their long-term survival decrease is likely due to high relative humidity, low temperature, the material to which they adhere, and potentially natural elevated radon concentration. The most commonly recorded species were: S. saprophyticus, which was identified in 52% of the studied sites, S. equorum in 29%, and S. warneri in 24% of the studied sites. Only a few isolates were assigned to Risk group 2: S. aureus, S. epidermidis, S. haemolyticus, S. pasteuri, and S. saprophyticus.
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Affiliation(s)
- Janez Mulec
- Karst Research Institute, Research Centre of the Slovenian Academy of Sciences and Arts, Titov Trg 2, SI-6230 Postojna, Slovenia
- UNESCO Chair on Karst Education, University of Nova Gorica, Glavni Trg 8, SI-5271 Vipava, Slovenia
| | - Sara Skok
- Karst Research Institute, Research Centre of the Slovenian Academy of Sciences and Arts, Titov Trg 2, SI-6230 Postojna, Slovenia
| | - Rok Tomazin
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Zaloška Cesta 4, SI-1000 Ljubljana, Slovenia
| | - Jasmina Letić
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Zaloška Cesta 4, SI-1000 Ljubljana, Slovenia
| | - Tadej Pliberšek
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Zaloška Cesta 4, SI-1000 Ljubljana, Slovenia
| | - Sanja Stopinšek
- Health Center Hrastnik, Novi Dom 11, SI-1430 Hrastnik, Slovenia
| | - Saša Simčič
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Zaloška Cesta 4, SI-1000 Ljubljana, Slovenia
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Bar-Dagan H, Gover O, Cohen NA, Vetvicka V, Rozenboim I, Schwartz B. Beta-glucans induce cellular immune training and changes in intestinal morphology in poultry. Front Vet Sci 2023; 9:1092812. [PMID: 36699331 PMCID: PMC9868956 DOI: 10.3389/fvets.2022.1092812] [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: 11/08/2022] [Accepted: 12/15/2022] [Indexed: 01/12/2023] Open
Abstract
Introduction Beta-glucans are known as biological response modifiers due to their ability to activate the immune system. This research aimed to determine the efficacy and safety of feeding beta-glucans from various sources on the immune status and intestinal morphology of chickens. Methods To this end we used in vitro and in vivo set-ups. In the in vitro set-up the chicken macrophage cell line HD-11 was used to measure the response of the chicken immune cells to beta-glucans extracted from algae and mushrooms on immune-related gene expression and associated activities. Additionally, we conducted two in vivo experiments using either beta-glucans extracted from yeast or mix of yeast and mushrooms beta-glucans as part of the chicks feed in order to test their effects on the chick intestinal morphology. Results In the in vitro set-up exposure of HD-11 cells to a concentration of 1 mg/ml of algae and mushroom beta-glucans resulted in significantly higher expression of 6 genes (TNFα, IL4, IL6, IL8, IL10, and iNOS2) compared to control. The release of nitrite oxide (NO) to the medium after exposure of HD-11 cells to mushrooms or algae beta-glucans was significantly increased compared to control. Additionally, significantly increased phagocytosis activity was found after exposure of the cells to algae and mushroom beta-glucans. In the in vivo set-up we observed that the length of the villi and the number of goblet cells in the ileum and the jejunum in the beta-glucan fed chicks were significantly augmented compared to control, when the chicks were fed with either yeast or yeast and mushroom beta-glucans mix. Discussion In conclusion, dietary supplementation of poultry with beta-glucan exerts significant and positive effects on immune activity and the intestinal morphology in poultry.
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Affiliation(s)
- Hadar Bar-Dagan
- Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith, Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
| | - Ofer Gover
- Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith, Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
| | - Natalie Avital Cohen
- Department of Animal Sciences, Robert H. Smith, Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
| | - Vaclav Vetvicka
- School of Medicine, Department of Pathology, University of Louisville, Louisville, KY, United States
| | - Israel Rozenboim
- Department of Animal Sciences, Robert H. Smith, Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
| | - Betty Schwartz
- Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith, Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
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Reyre JL, Grisel S, Haon M, Navarro D, Ropartz D, Le Gall S, Record E, Sciara G, Tranquet O, Berrin JG, Bissaro B. The Maize Pathogen Ustilago maydis Secretes Glycoside Hydrolases and Carbohydrate Oxidases Directed toward Components of the Fungal Cell Wall. Appl Environ Microbiol 2022; 88:e0158122. [PMID: 36354345 DOI: 10.1128/aem.01581-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Filamentous fungi are keystone microorganisms in the regulation of many processes occurring on Earth, such as plant biomass decay and pathogenesis as well as symbiotic associations. In many of these processes, fungi secrete carbohydrate-active enzymes (CAZymes) to modify and/or degrade carbohydrates. Ten years ago, while evaluating the potential of a secretome from the maize pathogen Ustilago maydis to supplement lignocellulolytic cocktails, we noticed it contained many unknown or poorly characterized CAZymes. Here, and after reannotation of this data set and detailed phylogenetic analyses, we observed that several CAZymes (including glycoside hydrolases and carbohydrate oxidases) are predicted to act on the fungal cell wall (FCW), notably on β-1,3-glucans. We heterologously produced and biochemically characterized two new CAZymes, called UmGH16_1-A and UmAA3_2-A. We show that UmGH16_1-A displays β-1,3-glucanase activity, with a preference for β-1,3-glucans with short β-1,6 substitutions, and UmAA3_2-A is a dehydrogenase catalyzing the oxidation of β-1,3- and β-1,6-gluco-oligosaccharides into the corresponding aldonic acids. Working on model β-1,3-glucans, we show that the linear oligosaccharide products released by UmGH16_1-A are further oxidized by UmAA3_2-A, bringing to light a putative biocatalytic cascade. Interestingly, analysis of available transcriptomics data indicates that both UmGH16_1-A and UmAA3_2-A are coexpressed, only during early stages of U. maydis infection cycle. Altogether, our results suggest that both enzymes are connected and that additional accessory activities still need to be uncovered to fully understand the biocatalytic cascade at play and its physiological role. IMPORTANCE Filamentous fungi play a central regulatory role on Earth, notably in the global carbon cycle. Regardless of their lifestyle, filamentous fungi need to remodel their own cell wall (mostly composed of polysaccharides) to grow and proliferate. To do so, they must secrete a large arsenal of enzymes, most notably carbohydrate-active enzymes (CAZymes). However, research on fungal CAZymes over past decades has mainly focused on finding efficient plant biomass conversion processes while CAZymes directed at the fungus itself have remained little explored. In the present study, using the maize pathogen Ustilago maydis as model, we set off to evaluate the prevalence of CAZymes directed toward the fungal cell wall during growth of the fungus on plant biomass and characterized two new CAZymes active on fungal cell wall components. Our results suggest the existence of a biocatalytic cascade that remains to be fully understood.
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Ikewaki N, Levy GA, Kurosawa G, Iwasaki M, Dedeepiya VD, Vaddi S, Senthilkumar R, Preethy S, Abraham SJ. Hepatoprotective Effects of Aureobasidium pullulans Derived β 1,3-1,6 Glucans in a Murine Model of Non-alcoholic Steatohepatitis. J Clin Exp Hepatol 2022; 12:1428-1437. [PMID: 36340302 PMCID: PMC9630018 DOI: 10.1016/j.jceh.2022.06.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 06/21/2022] [Indexed: 12/12/2022] Open
Abstract
Background Non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH) are highly prevalent conditions characterized by inflammation and fibrosis of the liver, which can progress to cirrhosis and hepatocellular carcinoma if left untreated. Conventional modalities are mainly symptomatic, with no definite solution. Beta-glucan-based biological response modifiers are a potential strategy in lieu of their beneficial metabolic effects. Aureobasidium pullulans strains AFO-202 and N-163 beta-glucans were evaluated for anti-fibrotic and anti-inflammatory hepatoprotective potentials in a NASH animal model in this study. Methods In the STAM™ murine model of NASH, five groups were studied for 8 weeks: (1) vehicle (RO water), (2) AFO-202 beta-glucan; (3) N-163 beta-glucan, (4) AFO-202+N-163 beta-glucan, and (5) telmisartan (standard pharmacological intervention). Evaluation of biochemical parameters in plasma and hepatic histology including Sirius red staining and F4/80 immunostaining were performed. Results AFO-202 beta-glucan significantly decreased inflammation-associated hepatic cell ballooning and steatosis. N-163 beta-glucan decreased fibrosis and inflammation significantly (P value < 0.05). The combination of AFO-202 with N-163 significantly decreased the NAFLD Activity Score (NAS) compared with other groups. Conclusion This preclinical study supports the potential of N-163 and AFO-202 beta-glucans alone or in combination as potential preventive and therapeutic agent(s), for NASH.
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Key Words
- ALT, Alanine aminotransferase
- ARRIVE, Animal Research: Reporting of In Vivo Experiments
- IL, Interleukin
- MCP-1, Monocyte chemoattractant protein-1
- NAFLD, Non-alcoholic fatty liver disease
- NAS, NAFLD Activity Score
- NASH, Non-alcoholic steatohepatitis
- PPAR, Peroxisome proliferator-activated receptor
- STAM, Stelic Animal Model
- TGF-β, Transforming growth factor beta
- TIMPs, Tissue inhibitors of matrix metalloproteinases
- TNF-α, Tumor necrosis factor alpha
- anti-fibrotic
- anti-inflammatory
- beta-glucans
- hepatoprotective
- non-alcoholic fatty liver disease (NAFLD)
- non-alcoholic steatohepatitis (NASH)
- telmisartan
- αSMA, Smooth muscle alpha-actin
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Affiliation(s)
- Nobunao Ikewaki
- Department of Medical Life Science, Kyushu University of Health and Welfare, Japan
- Institute of Immunology, Junsei Educational Institute, Nobeoka, Miyazaki, Japan
| | - Gary A. Levy
- Medicine and Immunology, University of Toronto, Ontario, Canada
| | - Gene Kurosawa
- Department of Academic Research Support Promotion Facility, Center for Research Promotion and Support, Fujita Health University, Aichi, Japan
- MabGenesis KK, Nagoya, Japan
| | - Masaru Iwasaki
- Centre for Advancing Clinical Research (CACR), University of Yamanashi - School of Medicine, Chuo, Japan
| | - Vidyasagar D. Dedeepiya
- Mary-Yoshio Translational Hexagon (MYTH), Nichi-In Centre for Regenerative Medicine (NCRM), Chennai, India
| | | | - Rajappa Senthilkumar
- Fujio-Eiji Academic Terrain (FEAT), Nichi-In Centre for Regenerative Medicine (NCRM), Chennai, India
| | - Senthilkumar Preethy
- Fujio-Eiji Academic Terrain (FEAT), Nichi-In Centre for Regenerative Medicine (NCRM), Chennai, India
| | - Samuel J.K. Abraham
- Centre for Advancing Clinical Research (CACR), University of Yamanashi - School of Medicine, Chuo, Japan
- Mary-Yoshio Translational Hexagon (MYTH), Nichi-In Centre for Regenerative Medicine (NCRM), Chennai, India
- Antony- Xavier Interdisciplinary Scholastics (AXIS), GN Corporation Co. Ltd., Kofu, Japan
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Renke G, Baesso T, Paes R, Renke A. β-Glucan "Trained Immunity" Immunomodulatory Properties Potentiate Tissue Wound Management and Accelerate Fitness Recover. Immunotargets Ther 2022; 11:67-73. [PMID: 36277614 PMCID: PMC9586175 DOI: 10.2147/itt.s381145] [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: 07/12/2022] [Accepted: 10/04/2022] [Indexed: 11/05/2022] Open
Abstract
Introduction It is well established that moderate physical activity can improve the immune status, rather excess or high-intensity physical exercise can cause damage to the immune system. In addition, muscle injuries resulting from increased frequency and intensity of exercises compromise innate immune activity and may decrease tissue regeneration. Thus, β-glucans, a natural compound, may represent an important substance with strong immunomodulatory properties acting as an immunostimulant therapy known as "trained immunity". This immune stimulating therapeutic is an immunological memory phenomenon linked to the innate immune system, triggering cellular changes at epigenetic, transcriptional, and functional levels, to regulate the immune system and recover its homeostasis with clinical benefits. Conclusion This narrative review works with the current evidence regarding β-glucans as a possible alternative therapy for wound healing and its safety and efficacy in the treatment of muscle injuries and physical recovery including other chronic conditions and diseases.
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Affiliation(s)
- Guilherme Renke
- National Institute of Cardiology, Brazilian Ministry of Health, Rio de Janeiro, Brazil,Nutrindo Ideais Performance and Nutrition Research Center, Rio de Janeiro, Brazil,Correspondence: Guilherme Renke, Endocrinology, Nutrindo Ideais Performance and Nutrition Research Center, Rua Alm. Saddock de Sá 207. Ipanema, Rio de Janeiro, Brazil, Tel +55522997840836, Email
| | - Thomaz Baesso
- Nutrindo Ideais Performance and Nutrition Research Center, Rio de Janeiro, Brazil
| | - Raphaela Paes
- Nutrindo Ideais Performance and Nutrition Research Center, Rio de Janeiro, Brazil
| | - Aline Renke
- Nutrindo Ideais Performance and Nutrition Research Center, Rio de Janeiro, Brazil
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Canaan MM, Reis-Canaan JC, Zangerônimo MG, Andrade EF, Gonçalves TMSV, Pereira MCA, Lima RR, Pardi V, Murata RM, Pereira LJ. Yeast Beta-Glucans Ingestion Does Not Influence Body Weight: A Systematic Review and Meta-Analysis of Pre-Clinical Studies. Nutrients 2021; 13:nu13124250. [PMID: 34959802 PMCID: PMC8707765 DOI: 10.3390/nu13124250] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/12/2021] [Accepted: 11/17/2021] [Indexed: 12/09/2022] Open
Abstract
Dietary fiber supplementation has been studied as a promising strategy in the treatment of obesity and its comorbidities. A systematic review and meta-analysis were performed to verify whether the consumption of yeast beta-glucan (BG) favors weight loss in obese and non-obese rodents. The PICO strategy was employed, investigating rodents (Population), subjected to the oral administration of yeast BG (Intervention) compared to animals receiving placebo (Comparison), evaluating body weight changes (Outcome), and based on preclinical studies (Study design). Two reviewers searched six databases and the grey literature. We followed the PRISMA 2020 guidelines, and the protocol was registered on PROSPERO (CRD42021267788). The search returned 2467 articles. Thirty articles were selected for full-text evaluation, and seven studies remained based on the eligibility criteria. The effects of BG intake on body weight were analyzed based on obese (n = 4 studies) and non-obese animals (n = 4 studies). Even though most studies on obese rodents (75%) indicated a reduction in body weight (qualitative analysis), the meta-analysis showed this was not significant (mean difference −1.35 g—95% CI −5.14:2.45). No effects were also observed for non-obese animals. We concluded that the ingestion of yeast BG barely affects the body weight of obese and non-obese animals.
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Affiliation(s)
- Marcelo M. Canaan
- Health Sciences Department, Universidade Federal de Lavras (UFLA), Lavras BR-37200-000, Brazil; (M.M.C.); (J.C.R.-C.); (E.F.A.)
| | - Juliana C. Reis-Canaan
- Health Sciences Department, Universidade Federal de Lavras (UFLA), Lavras BR-37200-000, Brazil; (M.M.C.); (J.C.R.-C.); (E.F.A.)
| | - Márcio G. Zangerônimo
- Veterinary Science Department, Universidade Federal de Lavras (UFLA), Lavras BR-37200-000, Brazil;
| | - Eric F. Andrade
- Health Sciences Department, Universidade Federal de Lavras (UFLA), Lavras BR-37200-000, Brazil; (M.M.C.); (J.C.R.-C.); (E.F.A.)
- Agrarian Sciences Institute, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Unaí BR-38610-000, Brazil
| | - Thais M. S. V. Gonçalves
- Dentistry Department, Universidade Federal de Santa Catarina (UFSC), Florianópolis BR-88040-900, Brazil;
| | - Michel C. A. Pereira
- Department of Nutrition, Universidade Federal de Lavras (UFLA), Lavras BR-37200-000, Brazil;
| | - Renato R. Lima
- Department of Statistics, Universidade Federal de Lavras (UFLA), Lavras BR-37200-000, Brazil;
| | - Vanessa Pardi
- Department of Foundational Sciences, School of Dental Medicine, East Carolina University (ECU), Greenville, NC 27834, USA;
| | - Ramiro M. Murata
- Department of Foundational Sciences, School of Dental Medicine, East Carolina University (ECU), Greenville, NC 27834, USA;
- Correspondence: (R.M.M.); (L.J.P.); Tel.: +1-252-737-6960 (R.M.M.); +55-35-3829-5211 (L.J.P.)
| | - Luciano J. Pereira
- Health Sciences Department, Universidade Federal de Lavras (UFLA), Lavras BR-37200-000, Brazil; (M.M.C.); (J.C.R.-C.); (E.F.A.)
- Correspondence: (R.M.M.); (L.J.P.); Tel.: +1-252-737-6960 (R.M.M.); +55-35-3829-5211 (L.J.P.)
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11
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Basak S, Gokhale J. Immunity boosting nutraceuticals: Current trends and challenges. J Food Biochem 2021; 46:e13902. [PMID: 34467553 DOI: 10.1111/jfbc.13902] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 06/14/2021] [Revised: 07/29/2021] [Accepted: 08/03/2021] [Indexed: 12/23/2022]
Abstract
The immune function of the human body is highly influenced by the dietary intake of certain nutrients and bioactive compounds present in foods. The preventive effects of these bioactive ingredients against various diseases have been well investigated. Functional foods are consumed across various diverse cultures, in some form or the other, which provide benefits greater than the basic nutritional needs. Novel functional foods are being developed using novel bioactive ingredients such as probiotics, polyunsaturated fatty acids, and various phytoconstituents, which have a range of immunomodulatory properties. Apart from immunomodulation, these ingredients also affect immunity by their antioxidant, antibacterial, and antiviral properties. The global pandemic of Severe Acute Respiratory Syndrome Coronavirus-2 has forced the scientific community to race against time to find a proper and effective drug or a vaccine. In this review, various non-pharmacological interventions using nutraceuticals and functional foods have been discussed. PRACTICAL APPLICATIONS: Despite a plethora of research being undertaken to understand the immunity boosting properties of the various bioactive present in food, the findings are not translating to nutraceutical products in the market. Immunity has proved to be one of the most important factors for the health and well-being of an individual, especially when the world has been under the grip of the novel coronavirus Severe Acute Respiratory Syndrome Coronavirus-2. The anti-inflammatory properties of various nutraceuticals can come out as potential inhibitors of the various inflammatory processes such as cytokine storms, usually being observed in COVID 19. This review gives an insight into how various nutraceuticals can help in the prevention of various diseases through different mechanisms. The lack of awareness and proper clinical trials pose a challenge to the nutraceutical industry. This review will help and encourage researchers to further design and develop various functional foods, which might help in building immunity.
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Affiliation(s)
- Somnath Basak
- Department of Food Engineering and Technology, Institute of Chemical Technology, Mumbai, India
| | - Jyoti Gokhale
- Department of Food Engineering and Technology, Institute of Chemical Technology, Mumbai, India
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Bergandi L, Apprato G, Silvagno F. Vitamin D and Beta-Glucans Synergically Stimulate Human Macrophage Activity. Int J Mol Sci 2021; 22:ijms22094869. [PMID: 34064458 PMCID: PMC8124691 DOI: 10.3390/ijms22094869] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/29/2021] [Accepted: 05/02/2021] [Indexed: 01/05/2023] Open
Abstract
Vitamin D and beta-glucans are both immunostimulants. Vitamin D exerts its beneficial effects on many components of the immune system. In macrophages, the hormone modulates both phagocytic activity and cytokine production; therefore, it plays an important role in mediating the innate immune response to infection. The immunomodulatory properties of beta-glucans are attributed to the ability of these fungal cell wall polysaccharides to bind to different receptors expressed on the cell surface of phagocytic and cytotoxic innate immune cells, including monocytes and macrophages. The intracellular signaling pathways activated by beta-glucans lead to enhanced phagocytosis and cytokine response. In this study we investigated the possible potentiation of immunomodulatory properties of the combined treatment with vitamin D and beta-glucans. The effects of 100 nM 1,25-dihydroxyvitamin D3 or 100 µg/mL beta-glucans were evaluated in human macrophages in terms of cytokine production, intracellular vesicle acidification and changes in energy metabolism, three hallmarks of macrophage antimicrobial activation. We found that all the analyzed parameters were enhanced by the co-treatment compared to the response to single molecules. The results of this study support the validity of a novel therapeutic approach that could boost the immune response, taking advantage of the synergy between two natural compounds.
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Neun BW, Cedrone E, Potter TM, Crist RM, Dobrovolskaia MA. Detection of Beta-Glucan Contamination in Nanotechnology-Based Formulations. Molecules 2020; 25:E3367. [PMID: 32722261 DOI: 10.3390/molecules25153367] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 07/08/2020] [Revised: 07/22/2020] [Accepted: 07/23/2020] [Indexed: 12/14/2022] Open
Abstract
Understanding the potential contamination of pharmaceutical products with innate immunity modulating impurities (IIMIs) is essential for establishing their safety profiles. IIMIs are a large family of molecules with diverse compositions and structures that contribute to the immune-mediated adverse effects (IMAE) of drug products. Pyrogenicity (the ability to induce fever) and activation of innate immune responses underlying both acute toxicities (e.g., anaphylactoid reactions or pseudoallergy, cytokine storm) and long-term effects (e.g., immunogenicity) are among the IMAE commonly related to IIMI contamination. Endotoxins of gram-negative bacteria are the best-studied IIMIs in that both methodologies for and pitfalls in their detection and quantification are well established. Additionally, regulatory guidance documents and research papers from laboratories worldwide are available on endotoxins. However, less information is currently known about other IIMIs. Herein, we focus on one such IIMI, namely, beta-glucans, and review literature and discuss the experience of the Nanotechnology Characterization Lab (NCL) with the detection of beta-glucans in nanotechnology-based drug products.
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Valero-Pérez M, Bermejo LM, López-Plaza B, García MA, Palma-Milla S, Gómez-Candela C. Regular Consumption of Lipigo ® Promotes the Reduction of Body Weight and Improves the Rebound Effect of Obese People Undergo a Comprehensive Weight Loss Program. Nutrients 2020; 12:nu12071960. [PMID: 32630079 PMCID: PMC7399819 DOI: 10.3390/nu12071960] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 06/26/2020] [Accepted: 06/29/2020] [Indexed: 11/23/2022] Open
Abstract
Obesity is a global public health problem. Objective: To evaluate the effect of the regular consumption of the product Lipigo® on body weight and rebound effect on overweight/obese subjects undergoing a comprehensive weight loss program. Methods: A randomized, parallel, double-blind, placebo-controlled clinical trial was conducted with male and female subjects presenting a BMI 25–39.9 kg/m2. All subjects underwent a comprehensive weight loss program (WLP) for 12 weeks, which included an individualized hypocaloric diet, physical activity recommendations, nutritional education seminars, and three times a day consumption of the product Lipigo® or Placebo. After-WLP, subjects continued the treatment for 9 months to assess rebound effect. Body weight (BW), BMI, and body composition were measured at the beginning and the end of the WLP, and in the follow-up. Results: A total of 120 subjects (85% women) 49.0 ± 9.5 years old and with a BW of 81.57 ± 13.26 kg (BMI 31.19 ± 3.44 kg/m2) were randomized and 73 subjects finished the study. At the end of the WLP, there was a tendency toward reduced BW (p = 0.093), BMI (p = 0.063), and WC (p = 0.059) in the treated group. However, subjects with obesity type 1 (OB1) from the treated group significantly reduced body weight (−5.27 ± 2.75 vs. −3.08 ± 1.73 kg; p = 0.017) and BMI (−1.99 ± 1.08 vs. −1.09 ± 0.55 kg/m2; p = 0.01) compared with placebo. They also presented a minor rebound effect after 9 months with product consumption (−4.19 ± 3.61 vs. −1.44 ± 2.51 kg; p = 0.026), minor BMI (−1.61 ± 1.43 vs. −0.52 ± 0.96 kg/m2; p = 0.025) and tended to have less fat-mass (−3.44 ± 2.46 vs. −1.44 ± 3.29 kg; p = 0.080) compared with placebo. Conclusions: The regular consumption of the product Lipigo® promotes the reduction of body weight and reduces the rebound effect of obese people after 52 weeks (12 months), mainly in obesity type 1, who undergo a comprehensive weight loss program.
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Affiliation(s)
- Marlhyn Valero-Pérez
- Nutrition Research Group, Hospital La Paz Institute for Health Research (IdiPAZ), 2804 Madrid, Spain; (M.V.-P.); (B.L.-P.)
| | - Laura M. Bermejo
- Nutrition Research Group, Hospital La Paz Institute for Health Research (IdiPAZ), Complutense University of Madrid, 28040 Madrid, Spain
- Correspondence: ; Tel.: +34-917-277-000 (ext. 42199)
| | - Bricia López-Plaza
- Nutrition Research Group, Hospital La Paz Institute for Health Research (IdiPAZ), 2804 Madrid, Spain; (M.V.-P.); (B.L.-P.)
| | | | - Samara Palma-Milla
- Nutrition Department, La Paz University Hospital, Nutrition Research Group, Hospital La Paz Institute for Health Research (IdiPAZ), Autonomous University of Madrid, 28046 Madrid, Spain; (S.P.-M.); (C.G.-C.)
| | - Carmen Gómez-Candela
- Nutrition Department, La Paz University Hospital, Nutrition Research Group, Hospital La Paz Institute for Health Research (IdiPAZ), Autonomous University of Madrid, 28046 Madrid, Spain; (S.P.-M.); (C.G.-C.)
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Abstract
Antimicrobial resistance (AMR) is a significant problem in health care, animal health, and food safety. To limit AMR, there is a need for alternatives to antibiotics to enhance disease resistance and support judicious antibiotic usage in animals and humans. Immunomodulation is a promising strategy to enhance disease resistance without antibiotics in food animals. One rapidly evolving field of immunomodulation is innate memory in which innate immune cells undergo epigenetic changes of chromatin remodeling and metabolic reprogramming upon a priming event that results in either enhanced or suppressed responsiveness to secondary stimuli (training or tolerance, respectively). Exposure to live agents such as bacille Calmette-Guerin (BCG) or microbe-derived products such as LPS or yeast cell wall ß-glucans can reprogram or "train" the innate immune system. Over the last decade, significant advancements increased our understanding of innate training in humans and rodent models, and strategies are being developed to specifically target or regulate innate memory. In veterinary species, the concept of enhancing the innate immune system is not new; however, there are few available studies which have purposefully investigated innate training as it has been defined in human literature. The development of targeted approaches to engage innate training in food animals, with the practical goal of enhancing the capacity to limit disease without the use of antibiotics, is an area which deserves attention. In this review, we provide an overview of innate immunomodulation and memory, and the mechanisms which regulate this long-term functional reprogramming in other animals (e.g., humans, rodents). We focus on studies describing innate training, or similar phenomenon (often referred to as heterologous or non-specific protection), in cattle, sheep, goats, swine, poultry, and fish species; and discuss the potential benefits and shortcomings of engaging innate training for enhancing disease resistance.
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Affiliation(s)
- Kristen A. Byrne
- Food Safety and Enteric Pathogens Research Unit, National Animal Disease Center, Agricultural Research Services, USDA, Ames, IA, United States
| | - Crystal L. Loving
- Food Safety and Enteric Pathogens Research Unit, National Animal Disease Center, Agricultural Research Services, USDA, Ames, IA, United States
| | - Jodi L. McGill
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, United States
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16
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Habtemariam S. The Chemistry, Pharmacology and Therapeutic Potential of the Edible Mushroom Dictyophora indusiata ( Vent ex. Pers.) Fischer (Synn. Phallus indusiatus). Biomedicines 2019; 7:E98. [PMID: 31842442 PMCID: PMC6966625 DOI: 10.3390/biomedicines7040098] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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: 11/26/2019] [Revised: 12/10/2019] [Accepted: 12/11/2019] [Indexed: 12/11/2022] Open
Abstract
Dictyophora indusiata (Vent. Ex. Pers.) Fischer or Phallus indusiatus is an edible member of the higher mushroom phylum of Basidiomycetes. Known for its morphological elegance that gave it the names bridal veil fungus, veiled lady or queen of the mushrooms, it has numerous medicinal values that are beginning to be acknowledged through pharmacological efficacy studies. In an attempt to promote research on this valuable natural resource, the present communication aims to provide a comprehensive review of the chemistry, pharmacology and potential therapeutic applications of extracts and compounds isolated from D. indusiata. Of the bioactive compounds, the chemistry of the polysaccharides as major bioactive components primarily the β-(1 → 3)-D-glucan with side branches of β-(1 → 6)-glucosyl units are discussed, while small molecular weight compounds include terpenoids and alkaloids. Biochemical and cellular mechanisms of action from general antioxidant and anti-inflammatory to more specific signaling mechanisms are outlined along with potential applications in cancer and immunotherapy, neurodegenerative and chronic inflammatory diseases, etc. Further research areas and limitations of the current scientific data are also highlighted.
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Affiliation(s)
- Solomon Habtemariam
- Pharmacognosy Research Laboratories & Herbal Analysis Services UK, University of Greenwich, Chatham-Maritime, Kent ME4 4TB, UK
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17
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Abraham A, Ostroff G, Levitz SM, Oyston PCF. A novel vaccine platform using glucan particles for induction of protective responses against Francisella tularensis and other pathogens. Clin Exp Immunol 2019; 198:143-152. [PMID: 31400225 PMCID: PMC6797901 DOI: 10.1111/cei.13356] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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] [Accepted: 07/31/2019] [Indexed: 12/13/2022] Open
Abstract
Vaccines are considered the bedrock of preventive medicine. However, for many pathogens, it has been challenging to develop vaccines that stimulate protective, long-lasting immunity. We have developed a novel approach using β-1,3-D-glucans (BGs), natural polysaccharides abundantly present in fungal cell walls, as a biomaterial platform for vaccine delivery. BGs simultaneously provide for receptor-targeted antigen delivery to specialized antigen-presenting cells together with adjuvant properties to stimulate antigen-specific and trained non-specific immune responses. This review focuses on various approaches of using BG particles (GPs) to develop bacterial and fungal vaccine candidates. A special case history for the development of an effective GP tularaemia vaccine candidate is highlighted.
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Affiliation(s)
- A Abraham
- University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - G Ostroff
- University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - S M Levitz
- University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - P C F Oyston
- CBR Division, Defence Science and Technology Laboratory, Porton Down, Salisbury, UK
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Ambati S, Ferarro AR, Kang SE, Lin J, Lin X, Momany M, Lewis ZA, Meagher RB. Dectin-1-Targeted Antifungal Liposomes Exhibit Enhanced Efficacy. mSphere 2019; 4:e00025-19. [PMID: 30760610 PMCID: PMC6374590 DOI: 10.1128/msphere.00025-19] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 01/10/2019] [Accepted: 01/25/2019] [Indexed: 11/24/2022] Open
Abstract
Aspergillus species cause pulmonary invasive aspergillosis resulting in nearly 100,000 deaths each year. Patients at the greatest risk of developing life-threatening aspergillosis have weakened immune systems and/or various lung disorders. Patients are treated with antifungals such as amphotericin B (AmB), caspofungin acetate, or triazoles (itraconazole, voriconazole, etc.), but these antifungal agents have serious limitations due to lack of sufficient fungicidal effect and human toxicity. Liposomes with AmB intercalated into the lipid membrane (AmB-LLs; available commercially as AmBisome) have severalfold-reduced toxicity compared to that of detergent-solubilized drug. However, even with the current antifungal therapies, 1-year survival among patients is only 25 to 60%. Hence, there is a critical need for improved antifungal therapeutics. Dectin-1 is a mammalian innate immune receptor in the membrane of some leukocytes that binds as a dimer to beta-glucans found in fungal cell walls, signaling fungal infection. Using a novel protocol, we coated AmB-LLs with Dectin-1's beta-glucan binding domain to make DEC-AmB-LLs. DEC-AmB-LLs bound rapidly, efficiently, and with great strength to Aspergillus fumigatus and to Candida albicans and Cryptococcus neoformans, highly divergent fungal pathogens of global importance. In contrast, untargeted AmB-LLs and bovine serum albumin (BSA)-coated BSA-AmB-LLs showed 200-fold-lower affinity for fungal cells. DEC-AmB-LLs reduced the growth and viability of A. fumigatus an order of magnitude more efficiently than untargeted control liposomes delivering the same concentrations of AmB, in essence decreasing the effective dose of AmB. Future efforts will focus on examining pan-antifungal targeted liposomal drugs in animal models of disease.IMPORTANCE The fungus Aspergillus fumigatus causes pulmonary invasive aspergillosis resulting in nearly 100,000 deaths each year. Patients are often treated with antifungal drugs such as amphotericin B (AmB) loaded into liposomes (AmB-LLs), but all antifungal drugs, including AmB-LLs, have serious limitations due to human toxicity and insufficient fungal cell killing. Even with the best current therapies, 1-year survival among patients with invasive aspergillosis is only 25 to 60%. Hence, there is a critical need for improved antifungal therapeutics. Dectin-1 is a mammalian protein that binds to beta-glucan polysaccharides found in nearly all fungal cell walls. We coated AmB-LLs with Dectin-1 to make DEC-AmB-LLs. DEC-AmB-LLs bound strongly to fungal cells, while AmB-LLs had little affinity. DEC-AmB-LLs killed or inhibited A. fumigatus 10 times more efficiently than untargeted liposomes, decreasing the effective dose of AmB. Dectin-1-coated drug-loaded liposomes targeting fungal pathogens have the potential to greatly enhance antifungal therapeutics.
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Affiliation(s)
- Suresh Ambati
- Department of Genetics, University of Georgia, Athens, Georgia, USA
| | - Aileen R Ferarro
- Department of Microbiology, University of Georgia, Athens, Georgia, USA
| | - S Earl Kang
- Fungal Biology Group and Department of Plant Biology, University of Georgia, Athens, Georgia, USA
| | - Jianfeng Lin
- Department of Microbiology, University of Georgia, Athens, Georgia, USA
| | - Xiaorong Lin
- Department of Microbiology, University of Georgia, Athens, Georgia, USA
| | - Michelle Momany
- Fungal Biology Group and Department of Plant Biology, University of Georgia, Athens, Georgia, USA
| | - Zachary A Lewis
- Department of Microbiology, University of Georgia, Athens, Georgia, USA
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Mirończuk-Chodakowska I, Witkowska AM, Zujko ME, Terlikowska KM. Quantitative evaluation of 1,3,1,6 β-D-glucan contents in wild-growing species of edible Polish mushrooms. Rocz Panstw Zakl Hig 2017; 68:281-290. [PMID: 28895671] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023] Open
Abstract
BACKGROUND Macrofungal β-glucans are mainly represented by compounds with β-1,3- and β-1,6 glycosidic bonds. They have been shown to have immunomodulatory, anticancer, and antioxidant properties. Although there are many reports on the bioactivity and structure of fungal glucans, studies on the quantitative assessment of these compounds are sparse. OBJECTIVE The aim of the study was to determine total β-glucans and 1,3-1,6-β-D-glucan contents in selected species of wild-growing edible Polish mushrooms. MATERIAL AND METHODS Eight species of wild-growing edible mushrooms Boletus pinophilus, Hydnum repandum, Craterellus cornucopioides, Suillus variegatus, Suillus granulatus, Gyroporus cyanescens, Tricholomopsis rutilans, and Auricularia auricula-judae and one species of cultivated mushroom for comparison purposes Agaricus bisporus, were analyzed. Quantitative analysis of 1,3-1,6-β-D-glucans was done using a colorimetric method in accordance with Nitschke et al. RESULT Mean total β-glucan content varied from 13.5 g/100 g dry mass in A. bisporus (portobello variety) to 40.9 g/100 g dry mass in T. rutilans. Mean 1,3-1,6-β-D-glucan content in the analyzed fruiting bodies ranged from 3.9 g/100 g dry mass in Agaricus bisporus (cremini) to 16.8 g/100 g dry mass in Auricularia auricula-judae (wood ear). The following mushrooms demonstrated the greatest percentage of 1,3-1,6-β-D-glucan contents in relation to the total β-glucan content: Gyroporus cyanescens (54%), Suillus granulatus (49.8%), Auricularia auricula-judae (47.9%), and Suillus variegatus (40.6%). CONCLUSIONS Among the analyzed species, wild-growing mushrooms had a generally higher average 1,3-1,6-β-Dglucan content compared with cultivated mushrooms such as A. bisporus. The highest average content of these polysaccharides was observed in medicinal mushroom Auricularia auricula-judae. Comparable 1,3-1,6-β-D-glucan content, in relation to this mushroom species, was found in Gyroporus cyanescens, Suillus granulatus and Suillus variegatus, which points to the possibility of the use of these species of mushrooms as medicinal foods.
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Affiliation(s)
- Iwona Mirończuk-Chodakowska
- Department of Food Commodities Science and Technology, Faculty of Health Sciences, Medical University of Bialystok, Bialystok, Poland
| | - Anna Maria Witkowska
- Department of Food Commodities Science and Technology, Faculty of Health Sciences, Medical University of Bialystok, Bialystok, Poland
| | - Małgorzata Elżbieta Zujko
- Department of Food Commodities Science and Technology, Faculty of Health Sciences, Medical University of Bialystok, Bialystok, Poland
| | - Katarzyna Maria Terlikowska
- Department of Food Commodities Science and Technology, Faculty of Health Sciences, Medical University of Bialystok, Bialystok, Poland
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20
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Veličković D, Saulnier L, Lhomme M, Damond A, Guillon F, Rogniaux H. Mass Spectrometric Imaging of Wheat (Triticum spp.) and Barley (Hordeum vulgare L.) Cultivars: Distribution of Major Cell Wall Polysaccharides According to Their Main Structural Features. J Agric Food Chem 2016; 64:6249-56. [PMID: 27463368 DOI: 10.1021/acs.jafc.6b02047] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Arabinoxylans (AX) and (1→3),(1→4)-β-glucans (BG) are the main components of cereal cell walls and influence many aspects of their end uses. Important variations in the composition and structure of these polysaccharides have been reported among cereals and cultivars of a given species. In this work, the spatial distribution of AX and BG in the endosperm of mature grains was established for nine wheat varieties and eight barley varieties using enzymatically assisted mass spectrometry imaging (MSI). Important structural features of the AX and BG polymers that were previously shown to influence their physicochemical properties were assessed. Differences in the distribution of AX and BG structures were observed, both within the endosperm of a given cultivar and between wheat and barley cultivars. This study provides a unique picture of the structural heterogeneity of AX and BG polysaccharides at the scale of the whole endosperm in a series of wheat and barley cultivars. Thus, it can participate meaningfully in a strategy aiming at understanding the structure-function relationships of these two polymers.
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Affiliation(s)
- Dušan Veličković
- INRA , UR1268 Biopolymers Interactions Assemblies, F-44316 Nantes, France
| | - Luc Saulnier
- INRA , UR1268 Biopolymers Interactions Assemblies, F-44316 Nantes, France
| | - Margot Lhomme
- INRA , UR1268 Biopolymers Interactions Assemblies, F-44316 Nantes, France
| | - Aurélie Damond
- INRA , UR1268 Biopolymers Interactions Assemblies, F-44316 Nantes, France
| | - Fabienne Guillon
- INRA , UR1268 Biopolymers Interactions Assemblies, F-44316 Nantes, France
| | - Hélène Rogniaux
- INRA , UR1268 Biopolymers Interactions Assemblies, F-44316 Nantes, France
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21
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Affiliation(s)
- Paul Stamets
- Paul Stamets is the owner and director of research at Fungi Perfecti Laboratories, Kamilche Point, Washington, United States
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Talati R, Baker WL, Pabilonia MS, White CM, Coleman CI. The effects of barley-derived soluble fiber on serum lipids. Ann Fam Med 2009; 7:157-63. [PMID: 19273871 PMCID: PMC2653960 DOI: 10.1370/afm.917] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2008] [Revised: 07/15/2008] [Accepted: 07/30/2008] [Indexed: 02/06/2023] Open
Abstract
PURPOSE We wanted to determine the association between consumption of barley and changes in plasma lipids in healthy and hypercholesterolemic men and women. METHODS A systematic literature search was conducted from the earliest possible date through January 2008. Trials were included in the analysis if they were randomized controlled trials of barley that reported efficacy data on at least 1 lipid endpoint. A DerSimonian and Laird random-effects model was used in calculating the weighted mean difference (WMD) and its 95% confidence interval (CI). Statistical heterogeneity was addressed using the I(2) statistic. Visual inspection of funnel plots, Egger's weighted regression statistics, and the trim and fill method were used to assess for publication bias. RESULTS We found 8 trials (n = 391 patients) of 4 to 12 weeks' duration evaluating the lipid-reducing effects of barley. The use of barley significantly lowered total cholesterol (weighted mean difference [WMD], -13.38 mg/dL; 95% CI, -18.46 to -8.31 mg/dL), low-density lipoprotein (LDL) cholesterol (WMD, -10.02 mg/dL; 95% CI, -14.03 to -6.00 mg/dL) and triglycerides (WMD, -11.83 mg/dL; 95% CI, -20.12 to -3.55 mg/dL) but did not appear to significantly alter high-density lipoprotein (HDL) cholesterol (P=.07). CONCLUSION Barley-derived beta-glucan appears to beneficially affect total cholesterol, LDL-cholesterol, and triglycerides, but not HDL-cholesterol.
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Affiliation(s)
- Ripple Talati
- University of Connecticut School of Pharmacy, Storrs, Connecticut, USA
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Abstract
Beta-glucan is a polysaccharide in the form of fiber and the main element of fiber in grains such as barley, oats, yeast and mushrooms. Many studies have examined the efficacy of beta-glucan in terms of the lipid lowering effects, blood sugar reduction, weight reduction, immune modulator, and anticarcinogenic effect. However, there is no comprehensive review article on the biomedical issues regarding beta-glucan. The authors searched for systematic reviews and clinical experiments for each relevant topic and reviewed the biomedical effects of beta-glucan, for the purpose of developing research strategies for the future.
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Affiliation(s)
- Soo Young Kim
- Department of Family Medicine, Hallym University, College of Medicine, Chunchon, Korea
| | - Hong Ji Song
- Department of Family Medicine, Hallym University, College of Medicine, Chunchon, Korea
| | - Yoon Young Lee
- Department of Family Medicine, Korea University, College of Medicine, Seoul, Korea
| | - Kyung-Hwan Cho
- Department of Family Medicine, Korea University, College of Medicine, Seoul, Korea
| | - Yong Kyun Roh
- Department of Family Medicine, Hallym University, College of Medicine, Chunchon, Korea
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