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Dos Santos Lima A, de Oliveira Pedreira FR, Bento NA, Novaes RD, Dos Santos EG, de Almeida Lima GD, de Almeida LA, Belo TCA, Vieira FV, Mohammadi N, Kilpeläinen P, Giusti-Paiva A, Granato D, Azevedo L. Digested galactoglucomannan mitigates oxidative stress in human cells, restores gut bacterial diversity, and provides chemopreventive protection against colon cancer in rats. Int J Biol Macromol 2024; 277:133986. [PMID: 39033896 DOI: 10.1016/j.ijbiomac.2024.133986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 07/11/2024] [Accepted: 07/16/2024] [Indexed: 07/23/2024]
Abstract
Galactoglucomannan (GGM) is the predominant hemicellulose in coniferous trees, such as Norway spruce, and has been used as a multipurpose emulsifier in the food industry. In vitro digestion with a cellular antioxidant activity assay was performed to determine the bioaccessibility and antioxidant activity of phenolic compounds, and the behaviour of GGM on in vivo experimental assay against induced colon cancer. The results showed that digestion decreased the bioaccessibility and antioxidant capacity of phenolic compounds. Cellular analysis did not support these findings once an antioxidant effect was observed in human cell lines. GGM attenuated the initiation and progression of colon cancer, by reducing the foci of aberrant crypts in rats, and modified the intestinal bacterial microbiota (disrupting the balance between Firmicutes and Bacteroidetes phyla). Thus, GGM provided chemopreventive protection against the development of colon cancer and acted as an intracellular antioxidant agent.
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Affiliation(s)
- Amanda Dos Santos Lima
- In vitro and in vivo Nutritional and Toxicological Analysis Lab, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | | | - Nathália Alves Bento
- In vitro and in vivo Nutritional and Toxicological Analysis Lab, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | - Rômulo Dias Novaes
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | - Elda Gonçalves Dos Santos
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | | | | | | | - Fernando Vitor Vieira
- In vitro and in vivo Nutritional and Toxicological Analysis Lab, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | - Nima Mohammadi
- Bioactivity & Applications Lab, Department of Biological Sciences, Faculty of Science and Engineering, School of Natural Sciences, University of Limerick, V94 T9PX Limerick, Ireland
| | - Petri Kilpeläinen
- Biorefinery and Bioproducts, Production Systems Unit, Natural Resources Institute Finland (Luke), Myllytie 1, 31600 Jokioinen, Finland
| | - Alexandre Giusti-Paiva
- Center of Biological Sciences, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Daniel Granato
- Bioactivity & Applications Lab, Department of Biological Sciences, Faculty of Science and Engineering, School of Natural Sciences, University of Limerick, V94 T9PX Limerick, Ireland.
| | - Luciana Azevedo
- In vitro and in vivo Nutritional and Toxicological Analysis Lab, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil.
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Loktionov A. Colon mucus in colorectal neoplasia and beyond. World J Gastroenterol 2022; 28:4475-4492. [PMID: 36157924 PMCID: PMC9476883 DOI: 10.3748/wjg.v28.i32.4475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/23/2022] [Accepted: 08/06/2022] [Indexed: 02/06/2023] Open
Abstract
Little was known about mammalian colon mucus (CM) until the beginning of the 21st century. Since that time considerable progress has been made in basic research addressing CM structure and functions. Human CM is formed by two distinct layers composed of gel-forming glycosylated mucins that are permanently secreted by goblet cells of the colonic epithelium. The inner layer is dense and impenetrable for bacteria, whereas the loose outer layer provides a habitat for abundant commensal microbiota. Mucus barrier integrity is essential for preventing bacterial contact with the mucosal epithelium and maintaining homeostasis in the gut, but it can be impaired by a variety of factors, including CM-damaging switch of commensal bacteria to mucin glycan consumption due to dietary fiber deficiency. It is proven that impairments in CM structure and function can lead to colonic barrier deterioration that opens direct bacterial access to the epithelium. Bacteria-induced damage dysregulates epithelial proliferation and causes mucosal inflammatory responses that may expand to the loosened CM and eventually result in severe disorders, including colitis and neoplastic growth. Recently described formation of bacterial biofilms within the inner CM layer was shown to be associated with both inflammation and cancer. Although obvious gaps in our knowledge of human CM remain, its importance for the pathogenesis of major colorectal diseases, comprising inflammatory bowel disease and colorectal cancer, is already recognized. Continuing progress in CM exploration is likely to result in the development of a range of new useful clinical applications addressing colorectal disease diagnosis, prevention and therapy.
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Sauvaitre T, Etienne-Mesmin L, Sivignon A, Mosoni P, Courtin CM, Van de Wiele T, Blanquet-Diot S. Tripartite relationship between gut microbiota, intestinal mucus and dietary fibers: towards preventive strategies against enteric infections. FEMS Microbiol Rev 2021; 45:5918835. [PMID: 33026073 DOI: 10.1093/femsre/fuaa052] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 10/05/2020] [Indexed: 02/06/2023] Open
Abstract
The human gut is inhabited by a large variety of microorganims involved in many physiological processes and collectively referred as to gut microbiota. Disrupted microbiome has been associated with negative health outcomes and especially could promote the onset of enteric infections. To sustain their growth and persistence within the human digestive tract, gut microbes and enteric pathogens rely on two main polysaccharide compartments, namely dietary fibers and mucus carbohydrates. Several evidences suggest that the three-way relationship between gut microbiota, dietary fibers and mucus layer could unravel the capacity of enteric pathogens to colonise the human digestive tract and ultimately lead to infection. The review starts by shedding light on similarities and differences between dietary fibers and mucus carbohydrates structures and functions. Next, we provide an overview of the interactions of these two components with the third partner, namely, the gut microbiota, under health and disease situations. The review will then provide insights into the relevance of using dietary fibers interventions to prevent enteric infections with a focus on gut microbial imbalance and impaired-mucus integrity. Facing the numerous challenges in studying microbiota-pathogen-dietary fiber-mucus interactions, we lastly describe the characteristics and potentialities of currently available in vitro models of the human gut.
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Affiliation(s)
- Thomas Sauvaitre
- Université Clermont Auvergne, UMR 454 INRAe, Microbiology, Digestive Environment and Health (MEDIS), Clermont-Ferrand, France.,Ghent University, Faculty of Bioscience Engineering, Center for Microbial Ecology and Technology (CMET), Ghent, Belgium
| | - Lucie Etienne-Mesmin
- Université Clermont Auvergne, UMR 454 INRAe, Microbiology, Digestive Environment and Health (MEDIS), Clermont-Ferrand, France
| | - Adeline Sivignon
- Université Clermont Auvergne, UMR 1071 Inserm, USC-INRAe 2018, Microbes, Intestin, Inflammation et Susceptibilité de l'Hôte (M2iSH), Clermont-Ferrand, France
| | - Pascale Mosoni
- Université Clermont Auvergne, UMR 454 INRAe, Microbiology, Digestive Environment and Health (MEDIS), Clermont-Ferrand, France
| | - Christophe M Courtin
- KU Leuven, Faculty of Bioscience Engineering, Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Centre (LFoRCe), Leuven, Belgium
| | - Tom Van de Wiele
- Ghent University, Faculty of Bioscience Engineering, Center for Microbial Ecology and Technology (CMET), Ghent, Belgium
| | - Stéphanie Blanquet-Diot
- Université Clermont Auvergne, UMR 454 INRAe, Microbiology, Digestive Environment and Health (MEDIS), Clermont-Ferrand, France
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do Carmo MAV, Fidelis M, de Oliveira PF, Feitoza LQ, Marques MJ, Ferreira EB, Oh WY, Shahidi F, Hellström J, Almeida LA, Novaes RD, Granato D, Azevedo L. Ellagitannins from jabuticaba (Myrciaria jaboticaba) seeds attenuated inflammation, oxidative stress, aberrant crypt foci, and modulated gut microbiota in rats with 1,2 dimethyl hydrazine-induced colon carcinogenesis. Food Chem Toxicol 2021; 154:112287. [PMID: 34058233 DOI: 10.1016/j.fct.2021.112287] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/04/2021] [Accepted: 05/17/2021] [Indexed: 12/13/2022]
Abstract
Since dietary factors are thought to be responsible for high colon cancer risk, we investigated the chemopreventive effect of jabuticaba seed extract (LJE) by administering yogurt with or without LJE against 1,2 dimethyl hydrazine (DMH)-induced colon carcinogenesis in rats. Results showed that LJE contained a total phenolic content of 57.16 g/100 g of seed extract in which 7.67 and 10.09 g/100 g represented total flavonoids and ellagitannins, respectively. LJE protected DNA and human LDL against induced in vitro oxidation, which was associated with the ellagitannin content and with the free-radical scavenging and reducing capacities. LJE alone had a non-clastogenicity/aneugenicity property, but in combination with cisplatin, it enhanced the chromosome aberrations in cancer cells. In colon cancer-induced rats, yogurt with or without LJE caused a reduction in pro-inflammatory parameters, decreased the RNA expression of antiapoptotic cytokines and increased the expression of proapoptotic cytokines. Moreover, LJE attenuated colon cancer initiation and progression by decreasing aberrant crypt foci and LJE recovered the gut microbiome. Together, this evidence suggests that LJE provides chemopreventive protection against colon cancer development by reducing inflammation and increasing proapoptotic pathways.
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Affiliation(s)
| | - Marina Fidelis
- Food Processing and Quality, Innovative Food System, Production Systems Unit, Natural Resources Institute Finland (Luke), Latokartanonkaari 9, 00790, Helsinki, Finland
| | | | - Lais Quellen Feitoza
- Faculty of Nutrition, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 714, 37130-000, Alfenas, Brazil
| | - Marcos José Marques
- Institute of Biomedical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 714, 37130-000, Alfenas, Brazil
| | - Eric Batista Ferreira
- Institute of Exact Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 714, 37130-000, Alfenas, Brazil
| | - Won Young Oh
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, NL A1B 3X9, Canada
| | - Fereidoon Shahidi
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, NL A1B 3X9, Canada
| | - Jarkko Hellström
- Food Processing and Quality, Innovative Food System, Production Systems Unit, Natural Resources Institute Finland (Luke), Latokartanonkaari 9, 00790, Helsinki, Finland
| | - Leonardo Augusto Almeida
- Department of Microbiology and Immunology, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 714, 37130-000, Alfenas, Brazil
| | - Rômulo Dias Novaes
- Institute of Biomedical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 714, 37130-000, Alfenas, Brazil
| | - Daniel Granato
- Food Processing and Quality, Innovative Food System, Production Systems Unit, Natural Resources Institute Finland (Luke), Latokartanonkaari 9, 00790, Helsinki, Finland.
| | - Luciana Azevedo
- Faculty of Nutrition, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 714, 37130-000, Alfenas, Brazil
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