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Panwong S, Phinyo K, Duangjan K, Sattayawat P, Pekkoh J, Tragoolpua Y, Yenchitsomanus PT, Panya A. Inhibition of dengue virus infection in vitro by fucoidan and polysaccharide extract from marine alga Sargassum spp. Int J Biol Macromol 2024:133496. [PMID: 38986999 DOI: 10.1016/j.ijbiomac.2024.133496] [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: 12/29/2023] [Revised: 06/07/2024] [Accepted: 06/26/2024] [Indexed: 07/12/2024]
Abstract
Dengue virus (DENV) infection poses a global health threat, leading to severe conditions with the potential for critical outcomes. Currently, there are no specific drugs available whereas the vaccine does not offer comprehensive protection across all DENV serotypes. Therefore, the development of potential anti-viral agents is necessary to reduce the severity risk and interrupt the transmission circuit. The search for effective antiviral agents against DENV has predominantly focused on natural resources, particularly those demonstrating diverse biological activities and high safety profiles. Cyanobacteria and algae including Leptolyngbya sp., Spirulina sp., Chlorella sp., and Sargassum spp., which are prevalent species in Thailand, have been reported for their diverse biological activities and high safety profile but not specifically for anti-DENV activity. In this study, the screening assay was performed to compare the anti-viral activity against DENV of crude polysaccharide and ethanolic extracts derived from 4 species of cyanobacteria and algae in Vero cells. Polysaccharide extracts from Sargassum spp. exhibited the most effective in inhibiting DENV-2 infection at co-infection conditions where the virus was exposed to the extract at the time of infection. Treatment of the extract significantly reduced the ability of DENV to bind to the host cells to 47.87 ± 3.88 % while treatment upon virus binding step had no anti-viral effect suggesting the underlaying mechanism of the extract on interfering virus binding step. Fucoidan, a key bioactive substance in Sargassum polysaccharide, showed to reduce DENV-2 infection to 26.59 ± 5.01 %, 20.46 ± 6.58 % in co-infection condition in Vero cells and A549 cell line, respectively. In accompanied with Sargassum polysaccharide, fucoidan disturbed the virus binding to the host cells. These findings warrant further development and exploration of the Sargassum-derived polysaccharide, fucoidan, as a promising candidate for combating DENV infections.
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Affiliation(s)
- Suthida Panwong
- Doctor of Philosophy Program in Applied Microbiology (International Program), Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kittiya Phinyo
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Science and Technology Research Institute, Chiang Mai University, Chiang Mai 50200, Thailand; Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kritsana Duangjan
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Science and Technology Research Institute, Chiang Mai University, Chiang Mai 50200, Thailand; Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Pachara Sattayawat
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Jeeraporn Pekkoh
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Science and Technology Research Institute, Chiang Mai University, Chiang Mai 50200, Thailand; Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Yingmanee Tragoolpua
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Natural Extracts and Innovative Products for Alternative Healthcare Research Group, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Pa-Thai Yenchitsomanus
- Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Aussara Panya
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Natural Extracts and Innovative Products for Alternative Healthcare Research Group, Chiang Mai University, Chiang Mai 50200, Thailand; Cell Engineering for Cancer Therapy Research Group, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
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Yang Q, Li M, Gu C, Lu A, Dong L, Zhang X, Hu X, Liu Y, Lu J. Effect of Fucoidan on Structure and Bioactivity of Chinese Steamed Bread. Foods 2024; 13:1057. [PMID: 38611362 PMCID: PMC11011307 DOI: 10.3390/foods13071057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/23/2024] [Accepted: 03/24/2024] [Indexed: 04/14/2024] Open
Abstract
Fucoidan refers to a group of sulphated polysaccharides obtained from brown seaweed, with numerous biological activities. In this study, fucoidan was fortified into Chinese steamed bread (CSB) at different concentrations (0, 1%, 3% and 5%) and the effect of fucoidan on the dough properties, structure properties and bioactivity were investigated. The results showed that fucoidan could change the viscosity of unfermented dough, and a high concentration of fucoidan could remove the free radicals produced by the SH-SS exchange reaction (GS-) in the dough, which significantly reduced the content of disulfide bond and reduced the expanded volume of fermented dough (p < 0.05). In addition, fucoidan forms a physical barrier on the surface of starch particles and hinders the reaction between protein-to-protein; therefore, fucoidan increased the hardness, gumminess and chewiness in CSB, and reduced the specific volume in CSB. Furthermore, the fucoidan-fortified CSB samples were found to have both the ability to significantly reduce the predicted glycemic index (pGI) (p < 0.05) and improve antioxidant activity (p < 0.05). Collectively, these findings could provide a theoretical basis for the applications of fucoidan as a functional component in fermented foods.
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Affiliation(s)
- Qingyu Yang
- College of Grain Science and Technology, Shenyang Normal University, Shenyang 110034, China; (Q.Y.)
- State Key Laboratory of Food Nutrition and Safety, Shenyang Normal University, Shenyang 110034, China
| | - Man Li
- College of Grain Science and Technology, Shenyang Normal University, Shenyang 110034, China; (Q.Y.)
- State Key Laboratory of Food Nutrition and Safety, Shenyang Normal University, Shenyang 110034, China
| | - Chenqi Gu
- College of Grain Science and Technology, Shenyang Normal University, Shenyang 110034, China; (Q.Y.)
- State Key Laboratory of Food Nutrition and Safety, Shenyang Normal University, Shenyang 110034, China
| | - Anni Lu
- Pinehurst School, Albany, Auckland 302-308, New Zealand
| | - Lijun Dong
- Beijing Imperial Food Garden Food Co., Ltd., Beijing 101407, China
| | - Xiling Zhang
- College of Grain Science and Technology, Shenyang Normal University, Shenyang 110034, China; (Q.Y.)
- State Key Laboratory of Food Nutrition and Safety, Shenyang Normal University, Shenyang 110034, China
| | - Xiufa Hu
- College of Grain Science and Technology, Shenyang Normal University, Shenyang 110034, China; (Q.Y.)
- State Key Laboratory of Food Nutrition and Safety, Shenyang Normal University, Shenyang 110034, China
| | - Yao Liu
- College of Grain Science and Technology, Shenyang Normal University, Shenyang 110034, China; (Q.Y.)
- State Key Laboratory of Food Nutrition and Safety, Shenyang Normal University, Shenyang 110034, China
| | - Jun Lu
- Auckland Bioengineering Institute, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
- Department of Food and Agriculture Technology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314006, China
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Li L, Gao J, Koh HSA, Zhou W. Bioaccessibility and Bioavailability of (-)-Epigallocatechin Gallate in the Bread Matrix with Glycemic Reduction. Foods 2022; 12:foods12010030. [PMID: 36613246 PMCID: PMC9818522 DOI: 10.3390/foods12010030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/16/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022] Open
Abstract
Bread has a high glycemic index (GI) and rich contents of quickly digestible carbohydrates, which is associated with insulin resistance and the risk of chronic diseases. (-)-Epigallocatechin Gallate (EGCG) is the primary catechin component that inhibits starch hydrolases, while the low release and absorption rates limit its utilization. In this study, EGCG was added to the bread matrix for fortification to reduce its glycemic index compared to white bread. EGCG fortification at 4% decreased the starch digestion rate of baked bread by 24.43% compared to unfortified bread and by 14.31% compared to white bread, with an identical amount of EGCG outside the matrix. Moreover, the predicted GI (pGI) was reduced by 13.17% compared to white bread. Further, 4% EGCG-matched bread enhanced the bioaccessibility and bioavailability of EGCG by 40.38% and 47.11%, respectively, compared to the control. The results of molecular docking demonstrated that EGCG had a higher binding affinity with α-amylase than with α-glucosidase, indicating that EGCG may effectively inhibit the accumulation of carbs during starch digestion. Thus, EGCG can be used as a functional ingredient in bread to reduce its glycemic potential, and the bread matrix can be used as a carrier for EGCG delivery to enhance its bioaccessibility and bioavailability.
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