1
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Zavadinack M, Cantu-Jungles TM, Abreu H, Ozturk OK, Cordeiro LMC, de Freitas RA, Hamaker BR, Iacomini M. (1 → 3),(1 → 6) and (1 → 3)-β-D-glucan physico-chemical features drive their fermentation profile by the human gut microbiota. Carbohydr Polym 2024; 327:121678. [PMID: 38171663 DOI: 10.1016/j.carbpol.2023.121678] [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: 10/05/2023] [Revised: 11/22/2023] [Accepted: 12/06/2023] [Indexed: 01/05/2024]
Abstract
Mushroom polysaccharides consist of a unique set of polymers that arrive intact in the human large intestine becoming available for fermentation by resident gut bacteria with potential benefits to the host. Here we have obtained four glucans from two mushrooms (Pholiota nameko and Pleurotus pulmonarius) under different extraction conditions and their fermentation profile by human gut bacteria in vitro was evaluated. These glucans were isolated and characterized as (1 → 3),(1 → 6)-β-D-glucans varying in branching pattern and water-solubility. An aliquot of each (1 → 3),(1 → 6)-β-D-glucan was subjected to controlled smith degradation process in order to obtain a linear (1 → 3)-β-D-glucan from each fraction. The four β-D-glucans demonstrated different water solubilities and molar mass ranging from 2.2 × 105 g.mol-1 to 1.9 × 106 g.mol-1. In vitro fermentation of the glucans by human gut microbiota showed they induced different short chain fatty acid production (52.0-97.0 mM/50 mg carbohydrates), but an overall consistent high propionate amount (28.5-30.3 % of total short chain fatty acids produced). All glucans promoted Bacteroides uniformis, whereas Anaerostipes sp. and Bacteroides ovatus promotion was strongly driven by the β-D-glucans solubility and/or branching pattern, highlighting the importance of β-D-glucan discrete structures to their fermentation by the human gut microbiota.
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Affiliation(s)
- Matheus Zavadinack
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR, CEP 81531-980, Brazil
| | - Thaisa M Cantu-Jungles
- Whistler Center for Carbohydrate Research, Department of Food Science, Purdue University, West Lafayette, IN 47907, USA
| | - Hellen Abreu
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR, CEP 81531-980, Brazil
| | - Oguz K Ozturk
- Whistler Center for Carbohydrate Research, Department of Food Science, Purdue University, West Lafayette, IN 47907, USA
| | - Lucimara M C Cordeiro
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR, CEP 81531-980, Brazil
| | - Rilton A de Freitas
- Department of Pharmacy Federal University of Paraná, Curitiba, PR CEP 80210-170, Brazil
| | - Bruce R Hamaker
- Whistler Center for Carbohydrate Research, Department of Food Science, Purdue University, West Lafayette, IN 47907, USA
| | - Marcello Iacomini
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR, CEP 81531-980, Brazil.
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2
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Dallazen JL, Ciapparini PG, Maria-Ferreira D, da Luz BB, Klosterhoff RR, Felipe LPG, Silva BJG, Cordeiro LMC, Werner MFDP. Arabinan-rich pectic polysaccharide fraction from Malpighia emarginata fruits alleviates inflammatory pain in mice. Food Res Int 2024; 176:113743. [PMID: 38163695 DOI: 10.1016/j.foodres.2023.113743] [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: 08/21/2023] [Revised: 11/16/2023] [Accepted: 11/22/2023] [Indexed: 01/03/2024]
Abstract
Malpighia emarginata (Malpighiaceae), popularly known as "acerola", is a tropical and subtropical fruit native to the Americas. Despite its high vitamin C content, which gives it a high antioxidant property, soluble dietary fibers, such as polysaccharides, are also abundant constituents of acerola (10% of the dried fruit). The acerola cold-water soluble (ACWS) fraction presented anti-fatigue and antioxidant effects in vivo and in vitro. To infer further systemic effects of ACWS, this study aimed to investigate the antinociceptive, anti-inflammatory, and antioxidant effects of ACWS in murine models of pain. In formalin-induced nociception, ACWS (0.1, 1, and 10 mg/kg) reduced only the inflammatory phase, and also (10 and 30 mg/kg) attenuated the acetic acid-induced writhing and leukocyte migration in the peritoneal cavity. The mechanical allodynia and paw edema induced by intraplantar injection of carrageenan were greatly reduced by ACWS (10 mg/kg). At the inflammatory pick induced by carrageenan (4 h), ACWS significantly reduced myeloperoxidase activity, TNF-α, IL-1β, and PGE2 levels, and restored IL-10 levels. ACWS also exhibited antioxidant properties by decreasing lipid hydroperoxides content, increasing GSH levels, and restoring superoxide dismutase and catalase activities in the carrageenan model and 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging assay. Collectively, these results support the antinociceptive, anti-inflammatory, and antioxidant effects of ACWS and reveal a promising candidate for the treatment of inflammatory pain conditions.
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Affiliation(s)
| | | | - Daniele Maria-Ferreira
- Department of Pharmacology, Federal University of Parana, Curitiba, Brazil; Instituto de Pesquisa Pelé Pequeno Príncipe, Faculdades Pequeno Príncipe, Curitiba, Brazil; Programa de Pós-graduação em Biotecnologia Aplicada à Saúde da Criança e do Adolescente, Faculdades Pequeno Príncipe, Curitiba, Paraná, Brazil
| | | | | | | | | | - Lucimara M C Cordeiro
- Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, Brazil
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3
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Lopes Leivas C, Moro Cantu-Jungles T, Barbosa da Luz B, Fernanda de Paula Werner M, Iacomini M, M C Cordeiro L. Investigation of the chemical structure and analgesic and anti-inflammatory properties of polysaccharides that constitute the dietary fibers of soursop (Annona muricata) fruit. Food Res Int 2023; 166:112588. [PMID: 36914320 DOI: 10.1016/j.foodres.2023.112588] [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: 08/17/2022] [Revised: 02/03/2023] [Accepted: 02/05/2023] [Indexed: 02/11/2023]
Abstract
Soursop fruits are widely used in the folk medicine to treat a variety of health conditions. Once the chemical structure of dietary fibers from fruits is closely related to its biological functions in the human body, we aimed to explore structural features and biological activity of dietary fibers from soursop. Polysaccharides that constitute the soluble and insoluble fibers were extracted and further analyzed using monosaccharide composition, methylation, molecular weight determination and 13C NMR data. Soursop soluble fibers (SWa fraction) were characterized as having type II arabinogalactan and a highly methyl esterified homogalacturonan, while non-cellulosic insoluble fibers (SSKa fraction) were mainly composed by a pectic arabinan, a xylan-xyloglucan complex and a glucuronoxylan. The oral pre-treatment with SWa and SSKa promoted antinociception in mice writhing test, reducing the number of pain-like behaviors (in 84.2 % and 46.9 %, respectively, at 10 mg/kg) and peritoneal leucocyte migration (55.4 % and 59.1 %, at 10 mg/kg), effects possibly associated with the pectins present in fruit pulp extractions. SWa also significantly inhibited the plasmatic extravasation of Evans blue dye in 39.6 % at 10 mg/kg. This paper describes for the first time the structural features of soursop dietary fibers that may be of biological significance in future.
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Affiliation(s)
- Carolina Lopes Leivas
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, CP 19.046, CEP 81, 531-980 Curitiba, PR, Brazil
| | - Thaisa Moro Cantu-Jungles
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, CP 19.046, CEP 81, 531-980 Curitiba, PR, Brazil
| | - Bruna Barbosa da Luz
- Department of Pharmacology, Federal University of Paraná, CEP 81, 531-980 Curitiba, PR, Brazil
| | | | - Marcello Iacomini
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, CP 19.046, CEP 81, 531-980 Curitiba, PR, Brazil
| | - Lucimara M C Cordeiro
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, CP 19.046, CEP 81, 531-980 Curitiba, PR, Brazil.
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4
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Pozzobon RG, Rutckeviski R, Carlotto J, Schneider VS, Cordeiro LMC, Mancarz GFF, de Souza LM, Mello RG, Smiderle FR. Chemical Evaluation of Liquidambar styraciflua L. Fruits Extracts and Their Potential as Anticancer Drugs. Molecules 2023; 28:molecules28010360. [PMID: 36615553 PMCID: PMC9822488 DOI: 10.3390/molecules28010360] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/21/2022] [Accepted: 12/27/2022] [Indexed: 01/04/2023] Open
Abstract
Liquidambar styraciflua L. is an aromatic species, popularly used in traditional Chinese medicine to treat diarrhea, dysentery, coughs, and skin sores. The present study was designed to investigate the chemical composition and biological potential of extracts obtained from the fruits of this plant. For the chemical evaluation, it was used mainly liquid and gas chromatography, plus NMR, and colorimetric methods. The aqueous extract (EA) originated two other fractions: an aqueous (P-EA) and an ethanolic (S-EA). The three extracts were composed of proteins, phenolic compounds, and carbohydrates in different proportions. The analyses showed that the polysaccharide extract (P-EA) contained pectic polysaccharides, such as acetylated and methyl esterified homogalacturonans together with arabinogalactan, while the fraction S-EA presented phenolic acids and terpenes such as gallic acid, protocathecuic acid, liquidambaric acid, combretastatin, and atractyloside A. EA, P-EA, and S-EA showed antioxidant activity, with IC50 values of 4.64 µg/mL, 16.45 µg/mL, and 3.67 µg/mL, respectively. The cytotoxicity followed the sequence S-EA > EA > P-EA, demonstrating that the toxic compounds were separated from the non-toxic ones by ethanol precipitation. While the fraction S-EA is very toxic to any cell line, the fraction P-EA is a promising candidate for studies against cancer due to its high toxicity to tumoral cells and low toxicity to normal cells.
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Affiliation(s)
- Rafaela G. Pozzobon
- Instituto de Pesquisa Pelé Pequeno Príncipe, Curitiba 80240-020, PR, Brazil
- Faculdades Pequeno Príncipe, Curitiba 80230-020, PR, Brazil
| | - Renata Rutckeviski
- Instituto de Pesquisa Pelé Pequeno Príncipe, Curitiba 80240-020, PR, Brazil
- Faculdades Pequeno Príncipe, Curitiba 80230-020, PR, Brazil
| | - Juliane Carlotto
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba 81531-980, PR, Brazil
| | - Vanessa S. Schneider
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba 81531-980, PR, Brazil
| | - Lucimara M. C. Cordeiro
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba 81531-980, PR, Brazil
| | | | - Lauro M. de Souza
- Instituto de Pesquisa Pelé Pequeno Príncipe, Curitiba 80240-020, PR, Brazil
- Faculdades Pequeno Príncipe, Curitiba 80230-020, PR, Brazil
| | - Rosiane Guetter Mello
- Instituto de Pesquisa Pelé Pequeno Príncipe, Curitiba 80240-020, PR, Brazil
- Faculdades Pequeno Príncipe, Curitiba 80230-020, PR, Brazil
| | - Fhernanda Ribeiro Smiderle
- Instituto de Pesquisa Pelé Pequeno Príncipe, Curitiba 80240-020, PR, Brazil
- Faculdades Pequeno Príncipe, Curitiba 80230-020, PR, Brazil
- Correspondence: ; Tel.: +55-41-33101035
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5
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Sabatke B, Chaves PFP, Cordeiro LMC, Ramirez MI. Synergistic Effect of Polysaccharides from Chamomile Tea with Nitazoxanide Increases Treatment Efficacy against Giardia intestinalis. Life (Basel) 2022; 12:life12122091. [PMID: 36556456 PMCID: PMC9785495 DOI: 10.3390/life12122091] [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] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/18/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022]
Abstract
Giardia intestinalis (syn. G. lamblia, G. duodenalis) is a protozoa parasite that produces one of the most frequent waterborne causes of diarrhea worldwide. This protozoan infects most mammals, including humans, and colonizes the small intestine, adhering to intestinal cells. The mechanism by which G. intestinalis causes diarrhea is multifactorial, causing intestinal malabsorption. The treatment of giardiasis uses chemotherapeutic drugs such as nitroimidazoles, furazolidone, paromomycin, and benzimidazole compounds. However, they are toxic, refractory, and may generate resistance. To increase efficacy, a current treatment strategy is to combine these drugs with other compounds, such as polysaccharides. Several studies have shown that polysaccharides have gastroprotective effects. Polysaccharides are high-molecular weight polymers, and they differ in structure and functions, being widely extracted from vegetables and fruits. In the present study, we show that polysaccharides found in chamomile tea (called MRW), in contact with antiparasitic agents, potentially inhibit the adhesion of parasites to intestinal cells. Moreover, at 500 µg/mL, they act synergistically with nitazoxanide (NTZ), increasing its effectiveness and decreasing the drug dose needed for giardiasis treatment.
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Affiliation(s)
- Bruna Sabatke
- Graduate Program in Microbiology, Parasitology and Pathology, Federal University of Paraná, Curitiba 81531-980, PR, Brazil
- EVAHPI-Extracellular Vesicles and Host-Parasite Interactions Research Group, Laboratório de Biologia Molecular e Sistemática de Tripanossomatideos, Carlos Chagas Institute-Fiocruz, Curitiba 81310-020, PR, Brazil
| | - Pedro Felipe P Chaves
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba 81531-980, PR, Brazil
| | - Lucimara M C Cordeiro
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba 81531-980, PR, Brazil
| | - Marcel I Ramirez
- EVAHPI-Extracellular Vesicles and Host-Parasite Interactions Research Group, Laboratório de Biologia Molecular e Sistemática de Tripanossomatideos, Carlos Chagas Institute-Fiocruz, Curitiba 81310-020, PR, Brazil
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6
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Cabral B, Bortolin RH, Gonçalves TAF, Maciel PMP, de Arruda AV, de Carvalho TG, Abboud KY, Alves JSF, Cordeiro LMC, de Medeiros IA, de Rezende AA, Zucolotto SM. Hypoglycemic and Vasorelaxant Effect of Passiflora edulis Fruit Peel By-Product. Plant Foods Hum Nutr 2021; 76:466-471. [PMID: 34581915 DOI: 10.1007/s11130-021-00921-8] [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] [Subscribe] [Scholar Register] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
Passiflora edulis fo. flavicarpa (Passifloraceae) is popularly known as yellow passion fruit and its fruit peels are considered a rich by-product in bioactive compounds which has greatly beneficial health properties. The objective of this study was to evaluate the effects of P. edulis fruit peel extracts in a type 1 diabetes model and the potential vasorelaxant effect. The aqueous and hydroethanolic extracts were obtained from P. edulis fruit peels and orientin and isorientin flavonoids were identified in both extracts through ultra-high performance liquid chromatography. Pectin was only identified in the aqueous extract by high-performance steric exclusion chromatography and nuclear magnetic resonance. Regarding the vascular system, the hydroethanolic extract showed better vasorelaxant effects in the mesenteric artery rings when compared to the aqueous extract. These effects mainly occur by opening the potassium channels. In the type 1 diabetes model, extracts at doses of 400 and 600 mg/kg were able to restore the effect of insulin in diabetic rats which were not responding to its action. The antidiabetic effect was more significant for the aqueous extract. Thus, the results suggest that the hydroethanolic and aqueous extracts have greater potential to be used to treat cardiovascular diseases such as hypertension and as a hypoglycemic agent, respectively. Taken together, P. edulis fruit peel extracts proved to be a source of valuable bioactive raw material to produce nutraceuticals or pharmaceutical products.
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Affiliation(s)
- Bárbara Cabral
- PNBIO, Postgraduate Program in Pharmaceutical Sciences, Federal University of Rio Grande Do Norte (UFRN), Natal, RN, Brazil
| | - Raul Hernandes Bortolin
- Department of Clinical and Toxicological Analyses, Federal University of Rio Grande Do Norte, Avenue Gen. Gustavo Cordeiro de Faria, Natal, RN, Brazil
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Science, University of Sao Paulo, Sao Paulo, SP, Brazil
| | | | | | - Alinne Villar de Arruda
- Department of Pharmaceutical Sciences, Federal University of Paraíba, João Pessoa, PB, Brazil
| | | | - Kahlile Youssef Abboud
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Jovelina Samara Ferreira Alves
- PNBIO, Postgraduate Program in Pharmaceutical Sciences, Federal University of Rio Grande Do Norte (UFRN), Natal, RN, Brazil
| | - Lucimara M C Cordeiro
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR, Brazil
| | | | - Adriana Augusto de Rezende
- Department of Clinical and Toxicological Analyses, Federal University of Rio Grande Do Norte, Avenue Gen. Gustavo Cordeiro de Faria, Natal, RN, Brazil
| | - Silvana Maria Zucolotto
- PNBIO, Postgraduate Program in Pharmaceutical Sciences, Federal University of Rio Grande Do Norte (UFRN), Natal, RN, Brazil.
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7
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Zavadinack M, de Lima Bellan D, da Rocha Bertage JL, da Silva Milhorini S, da Silva Trindade E, Simas FF, Sassaki GL, Cordeiro LMC, Iacomini M. An α-D-galactan and a β-D-glucan from the mushroom Amanita muscaria: Structural characterization and antitumor activity against melanoma. Carbohydr Polym 2021; 274:118647. [PMID: 34702466 DOI: 10.1016/j.carbpol.2021.118647] [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: 03/31/2021] [Revised: 09/03/2021] [Accepted: 09/04/2021] [Indexed: 12/13/2022]
Abstract
Polysaccharides α-D-galactan (GAL-Am) and β-D-glucan (GLC-Am) were obtained from Amanita muscaria fruiting bodies. They were purified using different methodologies, such as Fehling precipitation (for both fractions), freeze-thawing process and ultrafiltration (for GLC-Am). Results showed that the GAL-Am has (1 → 6)-linked Galp main chain branched at O-2 by terminal Galp units and has not been previously reported. Besides, GLC-Am has (1 → 3)-linked Glcp in the main chain, substituted at O-6 by (1 → 6)-linked β-Glcp units. Both are water-soluble, with 9.0 × 103 g/moL and 1.3 × 105 g/moL, respectively. GAL-Am and GLC-Am presented a selective proliferation reduction against B16-F10 melanoma cell line, not affecting non tumoral BALB/3T3 fibroblast cell line. Furthermore, both fractions reduced clonogenic capacity of melanoma cell line over an extended period of time. These results were obtained without modulations in B16-F10 cell adhesion, reinforcing the biological activities towards cell proliferation impairment and eliciting these polysaccharides as promising compounds to further exploration of their antimelanoma properties.
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Affiliation(s)
- Matheus Zavadinack
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR CEP 81531-980, Brazil
| | - Daniel de Lima Bellan
- Department of Cell Biology, Federal University of Paraná, Curitiba, PR CEP 81531-980, Brazil
| | | | - Shayane da Silva Milhorini
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR CEP 81531-980, Brazil
| | | | | | - Guilherme Lanzi Sassaki
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR CEP 81531-980, Brazil
| | - Lucimara M C Cordeiro
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR CEP 81531-980, Brazil
| | - Marcello Iacomini
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR CEP 81531-980, Brazil.
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8
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Ruthes AC, Cantu-Jungles TM, Cordeiro LMC, Iacomini M. Prebiotic potential of mushroom d-glucans: implications of physicochemical properties and structural features. Carbohydr Polym 2021; 262:117940. [PMID: 33838817 DOI: 10.1016/j.carbpol.2021.117940] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [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: 01/25/2021] [Revised: 03/12/2021] [Accepted: 03/12/2021] [Indexed: 12/26/2022]
Abstract
Mushroom d-glucans are recognized as dietary fibers and as biologically active natural polysaccharides, with the advantages of being quite inexpensive for production, tolerable, and having a range of possible structures and physicochemical properties. The prebiotic potential of mushroom d-glucans has been explored in recent years, but the relationship between their various structural features and activity is poorly understood. This review focuses on comprehensively evaluating the prebiotic potential of mushroom d-glucans in face of their structural variations. Overall, mushroom d-glucans provide a unique set of different structures and physicochemical properties with prebiotic potential, where linkage type and solubility degree seem to be associated with prebiotic activity outcomes. The understanding of the effects of distinct structures and physicochemical properties in mushroom d-glucans on the gut microbiota contributes to the design and selection of new prebiotics in a more predictable way.
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Affiliation(s)
- Andrea Caroline Ruthes
- Agroscope, Research Division, Plant Protection, Phytopathology and Zoology in Fruit and Vegetable Production, Wädenswil, Switzerland
| | - Thaísa Moro Cantu-Jungles
- Whistler Center for Carbohydrate Research and Department of Food Science, Purdue University, West Lafayette, USA
| | - Lucimara M C Cordeiro
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, Paraná, Brazil.
| | - Marcello Iacomini
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, Paraná, Brazil.
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9
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Cantu-Jungles TM, Zhang X, Kazem AE, Iacomini M, Hamaker BR, Cordeiro LMC. Microwave treatment enhances human gut microbiota fermentability of isolated insoluble dietary fibers. Food Res Int 2021; 143:110293. [PMID: 33992392 DOI: 10.1016/j.foodres.2021.110293] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 02/28/2021] [Accepted: 03/04/2021] [Indexed: 11/28/2022]
Abstract
Most insoluble dietary fibers are known to be relatively poorly fermented by the human gut microbiota. Here, the potential of microwave (MW) treatment to enhance the susceptibility of insoluble fruit polysaccharides to fermentation by the human gut microbiota was evaluated. Insoluble fruits dietary fibers before (xylan A, xylan T, and arabinan) and after MW (xylan A-MW, xylan T-MW, and arabinan-MW) treatment were fermented using an in vitro fermentation model. Gas production, shifts in pH, and short chain fatty acids (SCFAs) production showed an increase in fermentability of all tested dietary fibers, with an average 4-fold increase in SCFAs production after microwaving with total SCFAs ranging from 17.1 mM in the arabinan-MW to 40.4 mM in the xylan T-MW. While arabinan-MW and xylan T-MW promoted all three SCFAs proportionally (acetate:propionate:butyrate), xylan A-MW led to a marked and slow increase in butyrate reaching 28.1% of total SCFAs at 24 h. Rearrangements in three-dimensional structure that potentially facilitate bacterial accessibility to the dietary fiber were observed by scanning electron microscopy in xylan A-MW, forming coin-like particles with ~1.1 µm diameter. 16S rRNA gene sequencing indicated that microbiota shifts were related to both treatment (native versus MW) and dietary fiber type with many butyrogenic species being promoted by xylan A-MW. Overall, MW treatment enhanced insoluble dietary fiber fermentability promoting increased SCFAs production and bacterial shifts which are related to health benefits.
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Affiliation(s)
- Thaisa Moro Cantu-Jungles
- Whistler Center for Carbohydrate Research and Department of Food Science, Purdue University, West Lafayette, IN 47907, USA; Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil.
| | - Xiaowei Zhang
- Institute of Food and Nutraceutical Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Ahmad E Kazem
- Whistler Center for Carbohydrate Research and Department of Food Science, Purdue University, West Lafayette, IN 47907, USA.
| | - Marcello Iacomini
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil.
| | - Bruce R Hamaker
- Whistler Center for Carbohydrate Research and Department of Food Science, Purdue University, West Lafayette, IN 47907, USA.
| | - Lucimara M C Cordeiro
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil.
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10
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Chaves PFP, Hocayen PDAS, Dallazen JL, de Paula Werner MF, Iacomini M, Andreatini R, Cordeiro LMC. Chamomile tea: Source of a glucuronoxylan with antinociceptive, sedative and anxiolytic-like effects. Int J Biol Macromol 2020; 164:1675-1682. [PMID: 32795578 DOI: 10.1016/j.ijbiomac.2020.08.039] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 06/17/2020] [Revised: 07/24/2020] [Accepted: 08/04/2020] [Indexed: 12/30/2022]
Abstract
Chamomile is one of the most ancient medicinal herbs known to mankind and among its traditional uses are the calming effects. However, few studies explored its effects on the central nervous system (CNS). In this study we further proceed with structural elucidation of polysaccharides from chamomile tea. A highly substituted 4-O-methyl-glucuronoxylan (fraction SN-50R) was purified and chemically characterized, presenting Xyl:GlcA ratio of 1.7:1, Mw of 500 kDa and total sugar content of 98%. Its bioactivity on pain and on CNS was explored. Animals treated with SN-50R presented antinociceptive effect and a dose-dependent decrease in the number of crossings in the activity chamber and in the open field test, as well as a significant reduction in the number of marbles buried when compared to control. These results suggest that SN-50R presented sedative and anxiolytic-like effects and may be contributing for the calming effects obtained by chamomile tea ingestion.
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Affiliation(s)
| | | | - Jorge Luiz Dallazen
- Department of Pharmacology, Federal University of Paraná, Curitiba, Paraná, Brazil
| | | | - Marcello Iacomini
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - Roberto Andreatini
- Department of Pharmacology, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - Lucimara M C Cordeiro
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, Paraná, Brazil.
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11
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Adami ER, Corso CR, Turin-Oliveira NM, Galindo CM, Milani L, Stipp MC, da Silva LCM, do Nascimento GE, Chaves PFP, Chequin A, Mariott M, da Silva LM, Klassen G, Ramos EAS, Cordeiro LMC, Acco A. Polysaccharides from green sweet pepper increase the antineoplastic effect of methotrexate on mammary tumor cells. Int J Biol Macromol 2020; 158:1071-1081. [PMID: 32387356 DOI: 10.1016/j.ijbiomac.2020.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 12/03/2019] [Revised: 04/20/2020] [Accepted: 05/01/2020] [Indexed: 01/26/2023]
Abstract
This study investigated the antineoplastic effects and toxicity of long-term treatment with polysaccharides from sweet green pepper (Capsicum annuum [CAP]), and concomitant treatment with CAP + methotrexate (MTX) on mammary tumor cells in vivo and in vitro. Ehrlich tumor cells were subcutaneously inoculated in female Swiss mice. The long-term treatment (31 days) with CAP (100 mg kg-1, p.o.) reduced the tumor growth and did not induce toxicity. The combined treatment protocol of 100 mg kg-1 CAP (p.o.) + 1 mg kg-1 MTX (i.p.) for 21 days inhibited the tumor growth in 95%, higher than the inhibition induced by MTX alone (1.0 or 2.5 mg kg-1, i.p.). In tumors, both CAP and CAP + MTX decreased the gene expression of Vegf, vessel area, and IL-4 and IL-10 levels, and increased IL-6 levels and the degree of necrosis. Treatment with CAP + MTX also increased TNF-α levels in tumors. Additionally, CAP + MTX treatment reduced the viability of human MDA-MB-231 and MDA-MB-436 mammary tumor cells in culture. In fact, CAP exerted antineoplastic effects in vivo and in vitro against mammary tumor cells, possibly by modulating inflammation and angiogenesis. CAP may be a promising adjunct chemotherapy with lower toxicity.
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Affiliation(s)
- Eliana Rezende Adami
- Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil; Department of Clinical Analysis, Federal University of Paraná, Curitiba, PR, Brazil
| | - Claudia Rita Corso
- Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil; Pelé Pequeno Príncipe Research Institute, Curitiba, PR, Brazil
| | | | | | - Leticia Milani
- Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil
| | | | | | | | | | - Andressa Chequin
- Department of Basic Pathology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Marihá Mariott
- Postgraduate Program in Pharmaceutical Sciences, University Vale of Itajaí, Itajaí, SC, Brazil
| | - Luisa Mota da Silva
- Postgraduate Program in Pharmaceutical Sciences, University Vale of Itajaí, Itajaí, SC, Brazil
| | - Giseli Klassen
- Department of Basic Pathology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Edneia A S Ramos
- Department of Basic Pathology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Lucimara M C Cordeiro
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Alexandra Acco
- Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil.
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12
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Schneider VS, Bark JM, Winnischofer SMB, Dos Santos EF, Iacomini M, Cordeiro LMC. Dietary fibres from guavira pomace, a co-product from fruit pulp industry: Characterization and cellular antioxidant activity. Food Res Int 2020; 132:109065. [PMID: 32331640 DOI: 10.1016/j.foodres.2020.109065] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 01/30/2020] [Accepted: 02/02/2020] [Indexed: 12/20/2022]
Abstract
Exotic fruits and their co-products may be valuable sources of antioxidant dietary fibres (DF) which are useful for food industry and human health. In this study, we aimed to characterize DF obtained from guavira fruit pomace and investigate its antioxidant potential employing TEAC assay as well as a cell model. The DF were chemically characterized as containing arabinan, highly-methoxylated homogalacturonan and arabinogalactan. The DF-containing fraction (CPW) presented ABTS free radical scavenger activity. MTT and DCFH-DA assay were performed to assess, respectively, changes in cell viability and the potential intracellular antioxidant activity against H2O2-induced oxidative stress in murine NIH 3T3 fibroblast. CPW exhibited no effects on cell viability, moreover, when administered 48 h prior the induction of H2O2 toxic effects, it protected the cells, significantly increasing the cell viability compared to control. This protection may be related to the observed reduction of reactive oxygen species levels. Thus, the pre-treatment of cells with guavira DF for 48 h remarkably induced a cytoprotection against pro-oxidant conditions, and may be a valuable functional compound recovered from an unexploited agroindutrial waste.
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Affiliation(s)
- Vanessa Suzane Schneider
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil
| | - Juliana Müller Bark
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil
| | - Sheila M B Winnischofer
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, Brazil; Postgraduate Program in Cell and Molecular Biology, Federal University of Paraná, Curitiba, Brazil
| | - Elisvânia Freitas Dos Santos
- Department of Food Technology and Public Health, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Marcello Iacomini
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, Brazil
| | - Lucimara M C Cordeiro
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, Brazil.
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13
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Schneider VS, Iacomini M, Cordeiro LMC. β-L-Araf-containing arabinan and glucuronoxylan from guavira fruit pomace. Carbohydr Res 2019; 481:16-22. [PMID: 31220627 DOI: 10.1016/j.carres.2019.06.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 05/25/2019] [Revised: 06/11/2019] [Accepted: 06/11/2019] [Indexed: 12/17/2022]
Abstract
Guavira is a plant that belongs to Myrtaceae family, being widespread in the Brazilian Cerrado. In this study, pectic and hemicellulosic polysaccharides from guavira pomace, an agroindustry residue from pulp production, were structurally characterized using GPC, monosaccharide composition, methylation and NMR experiments. The absolute configurations of monosaccharides and the nature of uronic acids were attributed according to numerous data on the composition of related plant arabinogalactans and hemicelluloses present in the literature. An arabinan was purified, presenting Ara (85.0%), Rha (3.3%), Gal (7.7%) and GalA (4.0%). Mono and bidimensional NMR analyses of this arabinan demonstrated the presence of terminal β-L-Araf units, whose occurrence has been scarcely reported in the literature. Hemicellulosic fraction contained a glucuronoxylan, with α-D-GlcpA/4-O-methyl-α-D-GlcpA group linked to O-2 of a (1 → 4)-β-D-xylan, presenting one uronic acid residue for every six xylose units. These findings about guavira pomace polysaccharides could contribute to develop future nutraceutical and technological uses for this industrial waste.
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Affiliation(s)
- Vanessa Suzane Schneider
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil
| | - Marcello Iacomini
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, Brazil
| | - Lucimara M C Cordeiro
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, Brazil.
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14
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Moro Cantu-Jungles T, do Nascimento GE, Zhang X, Iacomini M, Cordeiro LMC, Hamaker BR. Soluble xyloglucan generates bigger bacterial community shifts than pectic polymers during in vitro fecal fermentation. Carbohydr Polym 2018; 206:389-395. [PMID: 30553337 DOI: 10.1016/j.carbpol.2018.11.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [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: 05/29/2018] [Revised: 10/22/2018] [Accepted: 11/06/2018] [Indexed: 11/30/2022]
Abstract
Xyloglucans and pectic polymers can be obtained from a variety of plants ubiquitous in the human diet, however, their fermentability in the colon and consequent nutritional benefits are poorly understood. Here, we evaluated metabolite profiles and bacterial shifts during in vitro fecal fermentations of two isolated pectic polymers and a xyloglucan. Depending on their chemical structure, pectic polymers were more acetogenic or propiogenic. Xyloglucan fermentation also resulted in elevated propionate if compared to FOS. Bacteroides plebeius, B. uniformis, Parabacteroides distasonis and bacterial groups such as Blautia, Lachnospira, Clostridiales and Lachnospiraceae, presented distinct abundances on each dietary fiber ferment. PCA and heat map analysis showed that major microbiota shifts occurred during xyloglucan fermentation, but not pectin fermentation. These data suggest that uncommon carbohydrate structures (i.e. isolated, soluble xyloglucan) in the diet hold the potential to generate larger shifts in microbiota communities than commonly consumed fibers (i.e. pectins).
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Affiliation(s)
- Thaisa Moro Cantu-Jungles
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, Brazil; Whistler Center for Carbohydrate Research and Department of Food Science, Purdue University, West Lafayette, USA
| | | | - Xiaowei Zhang
- Whistler Center for Carbohydrate Research and Department of Food Science, Purdue University, West Lafayette, USA
| | - Marcello Iacomini
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, Brazil
| | - Lucimara M C Cordeiro
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, Brazil.
| | - Bruce R Hamaker
- Whistler Center for Carbohydrate Research and Department of Food Science, Purdue University, West Lafayette, USA.
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Adami ER, Corso CR, Turin-Oliveira NM, Galindo CM, Milani L, Stipp MC, do Nascimento GE, Chequin A, da Silva LM, de Andrade SF, Dittrich RL, Queiroz-Telles JE, Klassen G, Ramos EAS, Cordeiro LMC, Acco A. Antineoplastic effect of pectic polysaccharides from green sweet pepper (Capsicum annuum) on mammary tumor cells in vivo and in vitro. Carbohydr Polym 2018; 201:280-292. [PMID: 30241820 DOI: 10.1016/j.carbpol.2018.08.071] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [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: 05/07/2018] [Revised: 07/20/2018] [Accepted: 08/16/2018] [Indexed: 01/06/2023]
Abstract
The present study investigated the antineoplastic effects of pectic polysaccharides that were extracted from green sweet pepper (Capsicum annuum [CAP]) in the Ehrlich carcinoma in mice and in human mammary tumor lineages. After the subcutaneous inoculation of 2 × 106 Ehrlich tumor cells, Female Swiss mice received 50, 100, or 150 mg/kg CAP or vehicle orally once daily or methotrexate (2.5 mg/kg, i.p., every 5 days) for 21 days. CAP dose-dependently reduced Ehrlich tumor growth. It also reduced the viability of MCF-7, MDA-MB-231, and MDA-MB-436 human mammary cell lineages. Treatment with CAP reduced the gene expression of vascular endothelial growth factor in vivo and in vitro, reduced vessel areas of the tumors, and induced necrosis in Ehrlich solid tumors. CAP treatment significantly increased Interleukin-6 in tumors. The antineoplastic effect of CAP appears to depend on the regulation of inflammation and angiogenesis. Further studies are encouraged to better understand the CAP potential for the treatment of breast tumors.
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Affiliation(s)
| | - Claudia Rita Corso
- Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil
| | | | | | - Letícia Milani
- Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil
| | | | | | - Andressa Chequin
- Department of Basic Pathology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Luisa Mota da Silva
- Postgraduate Program in Pharmaceutical Sciences, University Vale of Itajaí, Itajaí, SC, Brazil
| | | | | | | | - Giseli Klassen
- Department of Basic Pathology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Edneia A S Ramos
- Department of Basic Pathology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Lucimara M C Cordeiro
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Alexandra Acco
- Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil.
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16
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Cantu-Jungles TM, Iacomini M, Cipriani TR, Cordeiro LMC. Structural diversity of alkali-soluble polysaccharides from the fruit cell walls of tucumã (Astrocaryum aculeatum), a commelinid monocotyledon from the family Arecaceae. Plant Physiol Biochem 2017; 118:356-361. [PMID: 28697470 DOI: 10.1016/j.plaphy.2017.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 06/25/2017] [Accepted: 07/01/2017] [Indexed: 06/07/2023]
Abstract
The polysaccharide compositions of primary and secondary cell walls of members of the family Arecaceae in the commelinid clade of monocotyledonous plants have previously been found to be distinguishable from other commelinid families, and to be more similar to those of non-commelinids. However, few studies have been conducted. We aimed to extract and characterize the main cell-wall polysaccharides in the fruit pulp of tucumã (Astrocaryum aculeatum), a member of Arecaceae family. Hemicellulosic polysaccharides extracted by alkali from the fruit pulp were present in greater proportions (6.4% yield) than water-extracted ones (3.0% yield). Thus, the former was analyzed using monosaccharide composition, methylation, molecular weight determination and 13C-NMR data. The tucumã alkaline extract presented a highly ramified acidic galactoarabinoxylan (53.7%), a linear (1 → 5)-linked α-L-arabinan (27.8%), a low branched glucuronoxylan (14.1%) and small portions of a xyloglucan (4.4%). The major polysaccharide found in A. aculeatum (acidic galactoarabinoxylan) is similar to those found in other commelinid plants such as grasses and cereals.
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Affiliation(s)
- Thaisa Moro Cantu-Jungles
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil
| | - Marcello Iacomini
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil
| | - Thales R Cipriani
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil
| | - Lucimara M C Cordeiro
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil.
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17
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Cantu-Jungles TM, Iacomini M, Cordeiro LMC. Investigation of Structural Features of Prunes (Prunus domestica) Insoluble Dietary Fibers. ACTA ACUST UNITED AC 2017. [DOI: 10.17352/jfsnt.000006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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do Nascimento GE, Iacomini M, Cordeiro LMC. New findings on green sweet pepper (Capsicum annum) pectins: Rhamnogalacturonan and type I and II arabinogalactans. Carbohydr Polym 2017; 171:292-299. [PMID: 28578966 DOI: 10.1016/j.carbpol.2017.05.029] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [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: 12/18/2016] [Revised: 04/20/2017] [Accepted: 05/08/2017] [Indexed: 01/21/2023]
Abstract
Polysaccharides were extracted from sweet pepper (Capsicum annum) with hot water and named ANW (9% yield). Starch was precipitated by freeze-thaw treatment, while pectic polysaccharides (8% yield) remained soluble and consisted of GalA (67.0%), Rha (1.6%), Ara (6.4%), Xyl (0.3%), Gal (6.7%) and Glc (4.4%). A highly methoxylated homogalacturonan (HG, degree of methylesterification of 85% and degree of acetylation of 5%), and type I and type II arabinogalactans (AG-I and AG-II) were observed in NMR analyses. These were fractionated with Fehling's solution to give HG (5.5% yield) and AG fractions (0.6% yield). AG-I and AG-II were further separated by ultrafiltration. AG-II (0.2% yield) consisted of Ara (17.1%), Gal (36.0%), Rha (5.6%) and GalA (12.0%), had a molecular weight of 5.3×104g/mol and methylation and 1H/13C HSQC-DEPT-NMR analyses showed that it was anchored in type I rhamnogalacturonan. This is the first study that reports the presence of AG-I and AG-II in sweet pepper fruits.
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Affiliation(s)
- Georgia Erdmann do Nascimento
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil
| | - Marcello Iacomini
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil
| | - Lucimara M C Cordeiro
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil.
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19
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do Nascimento GE, Iacomini M, Cordeiro LMC. A comparative study of mucilage and pulp polysaccharides from tamarillo fruit (Solanum betaceum Cav.). Plant Physiol Biochem 2016; 104:278-283. [PMID: 27163609 DOI: 10.1016/j.plaphy.2016.04.055] [Citation(s) in RCA: 16] [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] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/28/2016] [Accepted: 04/30/2016] [Indexed: 06/05/2023]
Abstract
A comparative study of mucilage (locular tissue) and pulp polysaccharides from ripe tamarillo fruits (Solanum betaceum Cav.) was carried out. After aqueous and alkaline extractions and various purification steps (freeze-thaw and α-amylase - EC 3.2.1.1 treatments, Fehling precipitation and ultrafiltration through 50 kDa cut-off membrane), the obtained fractions from mucilage were analyzed by sugar composition, HPSEC, and NMR spectroscopy analyses. The results showed that the mucilage of tamarillo contains a highly methoxylated homogalacturonans mixed with type I arabinogalactans, a linear (1 → 5)-linked α-L-arabinan, and a linear (1 → 4)-β-D-xylan. A comparison with polysaccharides extracted from the pulp revealed that differences were observed in the yield and in the ratio of extracted polysaccharides. Moreover, structural differences between pulp and mucilage polysaccharides were also observed, such as in the length of side chains of the pectins, and in the degree of branching of the xylans.
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Affiliation(s)
- Georgia Erdmann do Nascimento
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil
| | - Marcello Iacomini
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil
| | - Lucimara M C Cordeiro
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil.
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20
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do Nascimento GE, Baggio CH, Werner MFDP, Iacomini M, Cordeiro LMC. Arabinoxylan from Mucilage of Tomatoes (Solanum lycopersicum L.): Structure and Antinociceptive Effect in Mouse Models. J Agric Food Chem 2016; 64:1239-1244. [PMID: 26824871 DOI: 10.1021/acs.jafc.5b05134] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 06/05/2023]
Abstract
Tomato is a known functional food due to its content of bioactive compounds. Herein, polysaccharides were extracted from mucilage of tomatoes, and a purified fraction (PTOK) was analyzed by sugar composition, methylation, and NMR spectroscopy analysis. The results showed the presence of an arabinoxylan, having (1→4)-linked β-d-Xylp units in the main chain, which carried a low proportion of branching (∼5.6%), at O-2 and O-3 position, with side chains constituted by single Araf or Xylp units. Intraperitoneal administration of the arabinoxylan in mice significantly reduced the number of abdominal constrictions induced by 0.6% acetic acid and the inflammatory phase of nociception induced by 2.5% formalin, indicating that it had an antinociceptive effect on inflammatory pain models, amplifying the biological role displayed by arabinoxylans in the diet. Furthermore, this study reports the presence of an arabinoxylan in a dicotyledon plant, and also it is the first study of polysaccharides from mucilage of tomatoes.
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Affiliation(s)
- Georgia Erdmann do Nascimento
- Departamento de Bioquı́mica e Biologia Molecular, Universidade Federal do Paraná , CP 19.046, CEP 81.531-980 Curitiba, PR, Brazil
| | - Cristiane H Baggio
- Departamento de Farmacologia, Universidade Federal do Paraná , CEP 81.531-980 Curitiba, PR, Brazil
| | | | - Marcello Iacomini
- Departamento de Bioquı́mica e Biologia Molecular, Universidade Federal do Paraná , CP 19.046, CEP 81.531-980 Curitiba, PR, Brazil
| | - Lucimara M C Cordeiro
- Departamento de Bioquı́mica e Biologia Molecular, Universidade Federal do Paraná , CP 19.046, CEP 81.531-980 Curitiba, PR, Brazil
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21
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Cordeiro LMC, Beilke F, Reinhardt VDF, Sassaki GL, Iacomini M. Rhamnogalactofuranan from the microalga Myrmecia biatorellae, symbiotic partner of Lobaria linita. Phytochemistry 2013; 94:254-9. [PMID: 23850078 DOI: 10.1016/j.phytochem.2013.06.008] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 02/08/2013] [Accepted: 06/04/2013] [Indexed: 05/09/2023]
Abstract
A structural study of the cell wall polysaccharides of Myrmecia biatorellae, the symbiotic algal partner of the lichenized fungus Lobaria linita was carried out. It produced a cold-water insoluble rhamnogalactofuranan, with a (1→3)-linked β-d-galactofuranosyl main-chain, substituted at O-6 by single units of β-d-Galf, or by side-chains of 2-O- and 2,4-di-O-linked α-l-Rhap units. The structure of the polysaccharide was established by chemical and NMR spectroscopic analysis.
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Affiliation(s)
- Lucimara M C Cordeiro
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980 Curitiba, PR, Brazil.
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Rattmann YD, Malquevicz-Paiva SM, Iacomini M, Cordeiro LMC. Galactofuranose-rich polysaccharides from Trebouxia sp. induce inflammation and exacerbate lethality by sepsis in mice. Phytochemistry 2013; 94:206-210. [PMID: 23809631 DOI: 10.1016/j.phytochem.2013.05.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 05/10/2013] [Accepted: 05/29/2013] [Indexed: 06/02/2023]
Abstract
Trebouxia sp. is a genus of green algae that is a symbiotic partner of lichenized fungi. Previous studies conduced demonstrated that Trebouxia sp. is able to produce galactofuranose-rich polysaccharides (β-d-galactofuranan, mannogalactofuranan), which were able to activate macrophages in vitro. The present study was proposed to investigate the effects of SK10 polysaccharides fraction from Trebouxia sp. on the model of polymicrobial sepsis induced by cecal ligation and puncture in mice in vivo. The subcutaneous administration of SK10 increased the late mortality rate by 20%, stimulated neutrophil accumulation in lungs (indirectly measured through myeloperoxidase activity) and also Interleukin-1β, creatinine and glucose serum levels. Moreover this study demonstrates the in vivo proinflammatory effects of polymers of galactofuranose and that they can act as pathogen-associated molecular patterns being highly recognized by the immune system of mammals, even if they come from a non-pathogenic microorganism.
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Affiliation(s)
- Yanna D Rattmann
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19046, CEP 81531-980 Curitiba, PR, Brazil
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do Nascimento GE, Hamm LA, Baggio CH, Werner MFDP, Iacomini M, Cordeiro LMC. Structure of a galactoarabinoglucuronoxylan from tamarillo (Solanum betaceum), a tropical exotic fruit, and its biological activity. Food Chem 2013; 141:510-6. [PMID: 23768387 DOI: 10.1016/j.foodchem.2013.03.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 03/01/2013] [Accepted: 03/06/2013] [Indexed: 11/16/2022]
Abstract
Tamarillo (Solanum betaceum) is a tropical exotic fruit whose polysaccharides were extracted from the ripe pulp. After various purification steps, homogeneous fractions (designated PTW, STK-1000R and PF) were analyzed by sugar composition, HPSEC, methylation and NMR spectroscopy analysis. The results showed that the fraction PTW consisted of a linear arabinan with (1→5)-linked α-l-arabinofuranosyl units. Fractions designated as STK-1000R and PF contained galactoarabinoglucuronoxylans, with (1→4)-linked β-d-Xylp residues in the backbone, carrying branches exclusively at O-2. The polysaccharide in STK-1000R is less branched than that in the PF fraction (∼20.0% and 36.5%, respectively), with side-chains formed by (1→5)-linked α-l-Araf residues and (1→4)-linked α-d-GlcpA residues and with non-reducing end units formed by α-l-Araf, β-Arap, β-d-Galp, α-d-GlcpA and 4-O-Me-α-d-GlcpA. Intraperitoneal administration of the STK-1000R fraction in mice significantly reduced the number of abdominal constrictions induced by 0.6% acetic acid and the inflammatory phase of nociception induced by 2.5% formalin, indicating that that fraction has an antinociceptive effect on inflammatory pain models.
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Affiliation(s)
- Georgia Erdmann do Nascimento
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980 Curitiba, PR, Brazil
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Cordeiro LMC, Reinhardt VDF, Iacomini M. Glucomannan and branched (1→3)(1→6) β-glucan from the aposymbiotically grown Physcia kalbii mycobiont. Phytochemistry 2012; 84:88-93. [PMID: 22981001 DOI: 10.1016/j.phytochem.2012.08.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 06/25/2012] [Accepted: 08/13/2012] [Indexed: 06/01/2023]
Abstract
Cultures of the mycobiont Physcia kalbii were obtained from germinated ascospores and cultivated on Sabouraud-Sucrose-agar medium. Alkaline extraction of freeze-dried mycelia provided a branched (1→3),(1→6)-β-glucan and a glucomannan, whose chemical structure was determined by monosaccharide composition, methylation, controlled Smith degradation and NMR spectroscopic analysis. The β-glucan had a (1→3)-linked β-glucopyranosyl backbone, partially substituted (approx. 50% of the units) at O-6. The side chains were formed by 6-O- (∼82%) and 2,6-O-linked-β-Glcp units, while the non-reducing ends were formed by β-glucopyranosyl residues. The glucomannan had (1→6)-linked α-Manp units in the main chain, almost all being substituted at O-2 by α-Manp and α-Glcp units. This glucomannan could be a typical polysaccharide of lichens from the family Physciaceae.
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Affiliation(s)
- Lucimara M C Cordeiro
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980, Curitiba, PR, Brazil.
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25
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Abstract
The main α-glucan synthesized by lichens of the genera Ramalina in the symbiotic state is isolichenan. This polysaccharide was not found in the aposymbiotically cultivated symbionts. It is still unknown if this glucan is produced by the mycobiont only in the presence of a photobiont, in a lichen thallus, or if the isolichenan suppression is influenced by the composition of culture medium used in its aposymbiotic cultive. Consequently, the latter hypothesis is tested in this study. Cultures of the mycobiont Ramalina complanata were obtained from germinated ascospores and cultivated on 4% glucose Lilly and Barnett medium. Freeze-dried colonies were defatted and their carbohydrates extracted successively with hot water and aqueous 10% KOH, each at 100 °C. The polysaccharides nigeran, laminaran and galactomannan were liberated, along with a lentinan-type β-glucan and a heteropolysaccharide (Man : Gal : Glc, 21 : 28 : 51). Nevertheless, the α-glucan isolichenan was not found in the extracts. It follows that it was probably a symbiotic product, synthesized by the mycobiont only in this particular microenvironment, in the presence of the photobiont in the lichen thallus. A discussion about polysaccharides found in the symbiotic thallus as well as in other aposymbiotic cultivated Ramalina mycobionts is also included.
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Affiliation(s)
- Lucimara M C Cordeiro
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, Paraná, Brazil.
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Cordeiro LMC, Sassaki GL, Gorin PAJ, Iacomini M. O-Methylated mannogalactan from the microalga Coccomyxa mucigena, symbiotic partner of the lichenized fungus Peltigera aphthosa. Phytochemistry 2010; 71:1162-1167. [PMID: 20444478 DOI: 10.1016/j.phytochem.2010.04.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2009] [Revised: 03/09/2010] [Accepted: 04/08/2010] [Indexed: 05/29/2023]
Abstract
A structural study of the carbohydrates from Coccomyxa mucigena, the symbiotic algal partner of the lichenized fungus Peltigera aphthosa, was carried out. It produced an O-methylated mannogalactan, with a (1-->6)-linked beta-galactopyranose main-chain partially substituted at O-3 by beta-Galp, 3-OMe-alpha-Manp or alpha-Manp units. There were no similarities with polysaccharides previously found in the lichen thallus of P. aphthosa. Moreover, the influence of lichenization in polysaccharide production by symbiotic microalgae and the nature of the photobiont in carbohydrate production in lichen symbiosis are also discussed.
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Affiliation(s)
- Lucimara M C Cordeiro
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-980 Curitiba, PR, Brazil
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Ruthes AC, Komura DL, Carbonero ER, Cordeiro LMC, Reis RA, Sassaki GL, Gorin PAJ, Iacomini M. Polysaccharides present in cultivated Teloschistes flavicans symbiosis: comparison with those of the thallus. Plant Physiol Biochem 2008; 46:500-505. [PMID: 18191406 DOI: 10.1016/j.plaphy.2007.10.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2007] [Indexed: 05/25/2023]
Abstract
The chemical structures of polysaccharides present in aposymbiotically cultured myco- and photobionts of the lichen Teloschistes flavicans were determined, in order to compare them with those previously found in the intact thallus. The mycobiont was cultured on a solid Lilly and Barnett medium and the resulting colonies were freeze dried, defatted, and their polysaccharides were extracted successively with 2%, 10% and 30% aq. KOH, each at 100 degrees C. The extracts were neutralized (HOAc) and fractionated, giving rise to three homogeneous fractions, PFSK2 from 2% KOH, which contained a (1-->4),(1-->6)-linked alpha-glucan (1:1 ratio, pullulan), fraction PK10 from 10% KOH extraction, which was a linear (1-->3)-linked linear beta-glucan (laminaran), and fraction PK30 from 30% KOH extraction, being a branched (1-->3),(1-->6)-linked beta-glucan. The photobiont (Trebouxia sp. de Puymaly) was cultured in liquid nutrient medium, and after purification, a linear (1-->5)-linked beta-galactofuranan was characterized. The galactofuranan and the laminaran were not present in the symbiotic thallus, in contrast to the glucans, showing that the mycobiont alone produces them without participation of the photobiont.
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Affiliation(s)
- Andrea C Ruthes
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, PR, Brazil
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Cordeiro LMC, Sassaki GL, Iacomini M. First report on polysaccharides of Asterochloris and their potential role in the lichen symbiosis. Int J Biol Macromol 2007; 41:193-7. [PMID: 17368755 DOI: 10.1016/j.ijbiomac.2007.02.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2006] [Revised: 02/01/2007] [Accepted: 02/08/2007] [Indexed: 11/16/2022]
Abstract
A structural study of the carbohydrates from the aposymbiotically cultured Asterochloris sp., the algal symbiont of the lichen Cladina confusa was carried out for the first time. A xylorhamnogalactofuranan was purified and was predominated by (1-->3)-linked galactofuranosyl units with sidechains in position 6 on approximately 6.4% of the units. The sidechains have galactofuranosyl units 5-O and 6-O-substituted, as well rhamnopyranosyl units 2-O, 3-O and 2,3-di-O-substituted. Xylose was detected only as nonreducing end units, together with galactofuranosyl units. Amylose and a beta-(1-->4)-xylan were also present. These polysaccharides have not been found in the symbiotic thallus of C. confusa, which contained only glucans, galactomannoglucan and galactoglucomannan. A potential role of these carbohydrates in lichen recognition proccess is also discussed.
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Affiliation(s)
- Lucimara M C Cordeiro
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19.046, CEP 81.531-990, Curitiba, PR, Brazil
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Cordeiro LMC, Reis RA, Cruz LM, Stocker-Wörgötter E, Iacomini M. Molecular studies of photobionts of selected lichens from the coastal vegetation of Brazil. FEMS Microbiol Ecol 2005; 54:381-90. [PMID: 16332336 DOI: 10.1016/j.femsec.2005.05.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2004] [Revised: 02/16/2005] [Accepted: 05/04/2005] [Indexed: 11/26/2022] Open
Abstract
A light microscopic and molecular analysis of photobionts in Ramalina and Cladonia from coastal habitats of Brazil is presented. A Bayesian phylogenetic analysis of ITS rDNA sequences suggests a Trebouxia lineage which is preferentially tropical in geographic distribution. This highly diverse clade also includes the morphological similar species Trebouxia higginsiae and galapagensis. Within the predominantly tropical clade of Trebouxia we distinguish several subclades, three of which are represented in our samples of Ramalina species. Since sexuality has not been recognized in coccal lichenised photobionts until recently, we cannot apply a biological species concept, but when compared with the sequence diversity between known species we conclude that several new species need to be described in this clade. The mutually exclusive presence of other Trebouxia lineages in temperate samples of Ramalina suggests an evolution towards higher selectivity in this genus. A strictly tropical lineage is not conspicuous in the photobionts of the genus Asterochloris sampled from Cladonia so far.
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Affiliation(s)
- Lucimara M C Cordeiro
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná - UNIOESTE, CEP 85819-110, Cascavel, PR, Brazil
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30
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Carbonero ER, Cordeiro LMC, Mellinger CG, Sassaki GL, Stocker-Wörgötter E, J Gorin PA, Iacomini M. Galactomannans with novel structures from the lichen Roccella decipiens Darb. Carbohydr Res 2005; 340:1699-705. [PMID: 15936004 DOI: 10.1016/j.carres.2005.03.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2004] [Accepted: 03/23/2005] [Indexed: 11/30/2022]
Abstract
Two homogeneous galactomannan fractions were isolated from the lichen, Roccella decipiens, one (FP) containing Man and Gal in an 81:19 molar ratio and the other (RFS), having Man, Gal, and Glc in a 43:56:1 molar ratio. FP consisted of a main chain with (1-->4)-linked alpha-D-Manp units, most of which were substituted at O-2 with side chains consisting of nonreducing end-, 2-O- and 6-O-substituted alpha-Manp units. The latter appeared to be substituted by single-unit beta-D-Galf nonreducing ends. RFS contained a similar alpha-D-Manp core structure, but with side chains containing nonreducing end, 5-O-, 6-O-, and 5,6-di-O-substituted beta-D-Galf units. Such polysaccharide structures have not been previously reported.
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Affiliation(s)
- Elaine R Carbonero
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, UFPR, CP 19.046, CEP 81.531-990 Curitiba, PR, Brazil
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31
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Cordeiro LMC, Carbonero ER, Sassaki GL, Reis RA, Stocker-Wörgötter E, Gorin PAJ, Iacomini M. A fungus-type beta-galactofuranan in the cultivated Trebouxia photobiont of the lichen Ramalina gracilis. FEMS Microbiol Lett 2005; 244:193-8. [PMID: 15727840 DOI: 10.1016/j.femsle.2005.01.040] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2004] [Revised: 01/16/2005] [Accepted: 01/24/2005] [Indexed: 11/18/2022] Open
Abstract
A structural characterization of polysaccharides extracted from the aposymbiotically cultured photobiont of the lichen Ramalina gracilis was carried out in order to compare them with those previously found in the symbiotic thallus. The photobiont was isolated from thallus fragments, following the method of Yamamoto, and cultivated in a liquid nutrient medium. Freeze-dried cells were defatted, and the polysaccharides extracted successively with water and aq. 10% KOH, each at 100 degrees C. After purification, the soluble fractions provided a polysaccharide containing a (1-->5)-linked beta-galactofuranosyl backbone, substituted in a small proportion at O-6 by beta-Galf units. Amylose was also found, as insoluble material obtained on freeze-thawing of the alkaline extract. These polysaccharides have not been found in the symbiotic thallus of Ramalina gracilis, which contained only water-soluble (isolichenan) and insoluble glucans (nigeran and laminaran), and galactomannan. Surprisingly, the galactofuranan has similarities with those found in some fungal cell walls.
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Affiliation(s)
- Lucimara M C Cordeiro
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná-UNIOESTE, CEP 85819-110, Cascavel, PR, Brazil
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32
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Cordeiro LMC, Stocker-Wörgötter E, Gorin PAJ, Iacomini M. Elucidation of polysaccharide origin in Ramalina peruviana symbiosis. FEMS Microbiol Lett 2005; 238:79-84. [PMID: 15336406 DOI: 10.1016/j.femsle.2004.07.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2004] [Accepted: 07/12/2004] [Indexed: 11/30/2022] Open
Abstract
A structural elucidation of polysaccharides extracted from the aposymbiotically cultured mycobiont of the lichen Ramalina peruviana was carried out in order to determine whether the polysaccharides found previously in the symbiotic thalli are produced by the mycobiont or photobiont or both. The mycobiont isolate was cultivated on a solid malt-yeast extract-medium and the freeze-dried colonies were defatted and the polysaccharides extracted successively with hot water and aq. 2% KOH, each at 100 degrees C. The alkaline extract was obtained in much higher yield (31.5%) and submitted to a freeze-thawing treatment, giving rise to a precipitate (PK2) of a mixture of (1-->3),(1-->4)-alpha-glucan (1.2:1 ratio, nigeran) and a (1-->3)-beta-glucan (laminaran). The mother liquor was treated with Fehling solution to give a precipitate (galactomannan). This had a (1-->6)-linked alpha-d-mannopyranosyl main chain, substituted at O-4 and in small proportion at O-2,4 by beta-Galp units. All three polysaccharides have previously been found in the symbiotic thalli of R. peruviana, showing that these are produced by the fungus, without the participation of the Trebouxia photobiont. Surprisingly, isolichenan, a cold-water soluble (1-->3),(1-->4)-alpha-linked-glucan (3:1 ratio) was not found in the isolated mycobiont, despite being the main polysaccharide found in the thalli.
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Affiliation(s)
- Lucimara M C Cordeiro
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná--UNIOESTE, CEP 85819-110, Cascavel, PR, Brazil
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Cordeiro LMC, Stocker-Wörgötter E, Gorin PAJ, Iacomini M. Comparative studies of the polysaccharides from species of the genus Ramalina-lichenized fungi-of three distinct habitats. Phytochemistry 2003; 63:967-975. [PMID: 12895548 DOI: 10.1016/s0031-9422(03)00336-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Several structurally different glucans (alpha- and beta-) and galactomannans were characterized as components of four species of the genus Ramalina, namely R. dendriscoides, R. fraxinea, R. gracilis and R. peruviana. Freeze-thawing treatment of hot aqueous extracts furnished as precipitates (PW) linear alpha-D-glucans of the nigeran type, with regularly distributed (1-->3)- and (1-->4)-linkages in a 1:1 ratio. The supernatants (SW) contained alpha-D-glucans with (1-->3)- and (1-->4)-linkages in a molar ratio of 3:1. The lichen residues were then extracted with 2% aq. KOH, and the resulting extracts submitted to the freeze-thawing treatment, giving rise to precipitates (PK2) of a mixture of alpha-glucan (nigeran) and beta-glucan, which were suspended in aqueous 0.5% NaOH at 50 degrees C, dissolving preferentially the beta-glucan. These were linear with (1-->3)-linkages (laminaran). The mother liquor of the KOH extractions (2% and 10% aq. KOH) was treated with Fehling's solution to give precipitates (galactomannans). The galactomannans are related, having (1-->6)-linked alpha-D-mannopyranosyl main chains, substituted at O-4 and in a small proportion at O-2,4 by beta-D-galactopyranosyl units. Despite the different habitats of these lichenized fungi, all species studied in this investigation have a similar pool of polysaccharides.
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Affiliation(s)
- Lucimara M C Cordeiro
- Departamento de Bioqui;mica, Universidade Federal do Paraná, CP 19.046, CEP 81.531-990, PR, Curitiba, Brazil
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Cordeiro LMC, Reis RA, Tischer CA, Gorin PAJ, Ferreira JC, Iacomini M. Linear beta-mannose-containing polysaccharide, beta-xylan, and amylose from the cultured photobiont Trebouxia sp. of the ascolichen Ramalina celastri. FEMS Microbiol Lett 2003; 220:89-94. [PMID: 12644232 DOI: 10.1016/s0378-1097(03)00066-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The cultured photobiont Trebouxia sp. of Ramalina celastri was successively extracted at 100 degrees C with hot water, 2% aqueous KOH, and 10% aqueous KOH to give polysaccharide-containing fractions A (2.9%), B (3.9%), and C (0.9% yield) respectively. The intact biont contained 3.8% amylose, which was present in each fraction, and was identified by a blue color formed with iodine solution. In fraction A, and following retrogradation from aqueous solution, it was characterized by (13)C-NMR spectroscopy. Fraction B was treated with alpha-amylase to give a water-soluble fraction consisting mainly of beta-mannose-containing polysaccharides (1.5% yield), whose main component had dn/dc 0.162 and M(r) 17 kDa. Fraction C was subjected to freeze-thawing and the precipitate was treated with alpha-amylase to give a resistant, linear, low molecular mass (1-->4)-linked beta-xylan. The beta-D-mannopyranan preparation contained mainly of 3-O- (28%), 4-O- (11%), and 6-O-substituted Manp units (35%), with 3-O-substituted Rhap units (11%). A controlled Smith degradation provided a beta-mannan with nonreducing end- (8%), 3-O- (85%) and 6-O-substituted units, showing (1-->3)- and (1-->6)-linked structures in the original polysaccharide. These could be present as block-type structures.
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Affiliation(s)
- Lucimara M C Cordeiro
- Departamento de Bioquímica, Universidade Federal do Paraná, CP 19.046, CEP 81.531.990 Curitiba, PR, Brazil
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