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Jayasree Subhash A, Babatunde Bamigbade G, Al-Ramadi B, Kamal-Eldin A, Gan RY, Senaka Ranadheera C, Ayyash M. Characterizing date seed polysaccharides: A comprehensive study on extraction, biological activities, prebiotic potential, gut microbiota modulation, and rheology using microwave-assisted deep eutectic solvent. Food Chem 2024; 444:138618. [PMID: 38309077 DOI: 10.1016/j.foodchem.2024.138618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/17/2024] [Accepted: 01/26/2024] [Indexed: 02/05/2024]
Abstract
This study investigated the biological activities, prebiotic potentials, modulating gut microbiota, and rheological properties of polysaccharides derived from date seeds via microwave-assisted deep eutectic solvent systems. Averaged molecular weight (246.5 kDa) and a monosaccharide profile (galacturonic acid: glucose: mannose: fructose: galactose), classifying MPS as a heteropolysaccharide. MPS, at concentrations of 125-1000 µg/mL, demonstrates increasing free radical scavenging activities (DPPH, ABTS, MC, SOD, SORS, and LO), potent antioxidant potential (FRAP: 51.2-538.3 µg/mL; TAC: 28.3-683.4 µg/mL; RP: 18.5-171.2 µg/mL), and dose-dependent antimicrobial activity against common foodborne pathogens. Partially-purified MPS exhibits inhibition against α-glucosidase (79.6 %), α-amylase (85.1 %), and ACE (68.4 %), along with 80 % and 46 % inhibition against Caco-2 and MCF-7 cancer cells, respectively. Results indicate that MPS fosters the growth of beneficial fecal microbiota, including Proteobacteria, Firmicutes, and Actinobacteria, supporting microbes responsible for major SCFAs (acetic, propionic, and butyric acids) production, such as Ruminococcus and Blautia.
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Affiliation(s)
- Athira Jayasree Subhash
- Department of Food Science, College of Agriculture and Veterinary Medicine, United Arab Emirates University (UAEU), Al-Ain, UAE
| | - Gafar Babatunde Bamigbade
- Department of Food Science, College of Agriculture and Veterinary Medicine, United Arab Emirates University (UAEU), Al-Ain, UAE
| | - Basel Al-Ramadi
- Department of Medical Microbiology and Immunology, College of Medicine and Health Sciences, United Arab Emirates University (UAEU), Al-Ain, UAE; Zayed Center for Health Sciences, United Arab Emirates University (UAEU), Al-Ain, UAE
| | - Afaf Kamal-Eldin
- Department of Food Science, College of Agriculture and Veterinary Medicine, United Arab Emirates University (UAEU), Al-Ain, UAE
| | - Ren-You Gan
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Singapore 138669, Singapore
| | | | - Mutamed Ayyash
- Department of Food Science, College of Agriculture and Veterinary Medicine, United Arab Emirates University (UAEU), Al-Ain, UAE; School of Agriculture, Food, and Ecosystem Sciences, Faculty of Science, The University of Melbourne, VIC 3010, Australia.
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Zhao Y, Han C, Wu Y, Sun Q, Ma M, Xie Z, Sun R, Pei H. Extraction, structural characterization, and antioxidant activity of polysaccharides from three microalgae. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 931:172567. [PMID: 38643871 DOI: 10.1016/j.scitotenv.2024.172567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/10/2024] [Accepted: 04/16/2024] [Indexed: 04/23/2024]
Abstract
Microalgal polysaccharides have received much attention due to their potential value in preventing and regulating oxidative damage. This study aims to reveal the mechanisms of regulating oxidative stress and the differences in the yield, structure, and effect of polysaccharides extracted from three microalgae: Golenkinia sp. polysaccharides (GPS), Chlorella sorokiniana polysaccharides (CPS), and Spirulina subsalsa polysaccharides (SPS). Using the same extraction method, GPS, CPS, and SPS were all heteropoly- saccharides composed of small molecular fraction: the monosaccharides mainly comprised galactose (Gal). Among the three, SPS had a higher proportion of small molecular fraction, and a higher proportion of Gal; thus it had the highest yield and antioxidant activity. GPS, CPS, and SPS all showed strong antioxidant activity in vitro, and showed strong ability to regulate oxidative stress, among which SPS was slightly higher. From the analysis of gene expression, the Nrf2-ARE signalling pathway was an important pathway for GPS, CPS, and SPS to regulate cellular oxidative stress. This study provides a theoretical foundation for further research on the utilization of microalgae polysaccharides and product development.
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Affiliation(s)
- Yang Zhao
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Chun Han
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Yangyingdong Wu
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Qianchen Sun
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Meng Ma
- School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Zhen Xie
- School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Rong Sun
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Haiyan Pei
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China; School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China; Shandong Provincial Engineering Center on Environmental Science and Technology, Jinan 250061, China; Institute of Eco-Chongming (IEC), Shanghai 202162, China.
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Chen N, Hu M, Jiang T, Xiao P, Duan JA. Insights into the molecular mechanisms, structure-activity relationships and application prospects of polysaccharides by regulating Nrf2-mediated antioxidant response. Carbohydr Polym 2024; 333:122003. [PMID: 38494201 DOI: 10.1016/j.carbpol.2024.122003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/24/2024] [Accepted: 02/26/2024] [Indexed: 03/19/2024]
Abstract
The occurrence and development of many diseases are closely related to oxidative stress. In this context, accumulating evidence suggests that Nrf2, as the master switch of cellular antioxidant signaling, plays a central role in controlling the expression of antioxidant genes. The core molecular mechanism of polysaccharides treatment of oxidative stress-induced diseases is to activate Keap1/Nrf2/ARE signaling pathway, promote nuclear translocation of Nrf2, and up-regulate the expression of antioxidant enzymes. However, recent studies have shown that other signaling pathways in which polysaccharides exert antioxidant effects, such as PI3K/Akt/GSK3β, JNK/Nrf2 and NF-κB, have complex crosstalk with Keap1/Nrf2/ARE, may have direct effects on the nuclear translocation of Nrf2. This suggests a new strategy for designing polysaccharides as modulators of Nrf2-dependent pathways to target the antioxidant response. Therefore, in this work, we investigate the crosstalk between Keap1/Nrf2/ARE and other antioxidant signaling pathways of polysaccharides by regulating Nrf2-mediated antioxidant response. For the first time, the structural-activity relationship of polysaccharides, including molecular weight, monosaccharide composition, and glycosidic linkage, is systematically elucidated using principal component analysis and cluster analysis. This review also summarizes the application of antioxidant polysaccharides in food, animal production, cosmetics and biomaterials. The paper has significant reference value for screening antioxidant polysaccharides targeting Nrf2.
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Affiliation(s)
- Nuo Chen
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Meifen Hu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Tingyue Jiang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Ping Xiao
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, PR China.
| | - Jin-Ao Duan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, PR China.
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Bahnamiri PJ, Hajizadeh Moghaddam A, Ranjbar M, Nazifi E. Effects of Nostoc commune extract on the cerebral oxidative and neuroinflammatory status in a mice model of schizophrenia. Biochem Biophys Rep 2024; 37:101594. [PMID: 38371525 PMCID: PMC10873873 DOI: 10.1016/j.bbrep.2023.101594] [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: 08/27/2023] [Revised: 11/19/2023] [Accepted: 11/22/2023] [Indexed: 02/20/2024] Open
Abstract
Cyanobacterium Nostoc commune has long been used to alleviate various diseases. This research examines the effects of Nostoc commune extract (NCE) against behavioral disorders, cerebral oxidative stress, and inflammatory damage in the ketamine-induced schizophrenia model. Oral NCE administration (70 and 150 mg/kg/d) is performed after intraperitoneal ketamine injection (20 mg/kg) for 14 consecutive days. The forced swimming and open field tests are used to assess schizophrenia-like behaviors. After the behavioral test, dopamine (DA) level, oxidative stress markers, as well as the interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) expression are measured in the cerebral cortex. The results show that NCE treatment ameliorates KET-induced anxiety and depressive-like behaviors in OFT and FST, respectively. NCE considerably decreases the malondialdehyde (MDA) and DA levels and IL-6 and TNF-α expressions in mice with schizophrenia-like symptoms. Also, a significant increase is observed in the glutathione (GSH) level and catalase (CAT), superoxide dismutase (SOD), and glutathione reductase (GRx) activity in cerebral tissue. The present study shows that NCE treatment effectively improves KET-induced schizophrenia-like behaviors and oxidative and inflammatory damage. Therefore, NCE, via its bioactive constituents, could have strong neuroprotective effects in the schizophrenia-like model.
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Affiliation(s)
| | | | - Mojtaba Ranjbar
- Faculty of Biotechnology, Amol University of Special Modern Technologies, Amol, Iran
| | - Ehsan Nazifi
- Department of Plant Sciences, University of Mazandaran, Babolsar, Iran
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Gui SY, Wang XC, Huang ZH, Li MM, Wang JH, Gui SY, Zhang GH, Lu Y, Tao LM, Qian HS, Jiang ZX. Nanoscale coordination polymer Fe-DMY downregulating Poldip2-Nox4-H 2O 2 pathway and alleviating diabetic retinopathy. J Pharm Anal 2023; 13:1326-1345. [PMID: 38174114 PMCID: PMC10759264 DOI: 10.1016/j.jpha.2023.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/06/2023] [Accepted: 05/08/2023] [Indexed: 01/05/2024] Open
Abstract
Diabetic retinopathy (DR) is a prevalent microvascular complication of diabetes and the leading cause of blindness and severe visual impairment in adults. The high levels of glucose trigger multiple intracellular oxidative stress pathways, such as POLDIP2, resulting in excessive reactive oxygen species (ROS) production and increased expression of vascular cell adhesion molecule-1 (VCAM-1), hypoxia-inducible factor 1α (HIF-1α), and vascular endothelial growth factor (VEGF), causing microvascular dysfunction. Dihydromyricetin (DMY) is a natural flavonoid small molecule antioxidant. However, it exhibits poor solubility in physiological environments, has a short half-life in vivo, and has low oral bioavailability. In this study, we present, for the first time, the synthesis of ultra-small Fe-DMY nano-coordinated polymer particles (Fe-DMY NCPs), formed by combining DMY with low-toxicity iron ions. In vitro and in vivo experiments confirm that Fe-DMY NCPs alleviate oxidative stress-induced damage to vascular endothelial cells by high glucose, scavenge excess ROS, and improve pathological features of DR, such as retinal vascular leakage and neovascularization. Mechanistic validation indicates that Fe-DMY NCPs can inhibit the activation of the Poldip2-Nox4-H2O2 signaling pathway and downregulate vital vascular function indicators such as VCAM-1, HIF-1α, and VEGF. These findings suggest that Fe-DMY NCPs could serve as a safe and effective antioxidant and microangio-protective agent, with the potential as a novel multimeric drug for DR therapy.
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Affiliation(s)
- Si-Yu Gui
- Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China
- Department of Clinical Medicine, The Second School of Clinical Medicine, Anhui Medical University, Hefei, 230032, China
| | - Xin-Chen Wang
- Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China
- Department of Clinical Medicine, The Second School of Clinical Medicine, Anhui Medical University, Hefei, 230032, China
| | - Zhi-Hao Huang
- Department of Clinical Medicine, The Second School of Clinical Medicine, Anhui Medical University, Hefei, 230032, China
| | - Mei-Mei Li
- Department of Clinical Medicine, The First School of Clinical Medicine, Anhui Medical University, Hefei, 230032, China
| | - Jia-Hao Wang
- Department of Clinical Medicine, The First School of Clinical Medicine, Anhui Medical University, Hefei, 230032, China
| | - Si-Yin Gui
- Department of Laboratory, Fengtai County First People's Hospital, Huainan, Anhui, 232101, China
- Department of Immunology, The School of Medicine, Anhui University of Technology, Huainan, Anhui, 232100, China
| | - Gan-Hua Zhang
- Department of Nursing, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China
| | - Yao Lu
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230032, China
| | - Li-Ming Tao
- Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China
| | - Hai-Sheng Qian
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei, 230032, China
| | - Zheng-Xuan Jiang
- Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China
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Guo P, Chen H, Ma J, Zhang Y, Chen H, Wei T, Gao D, Li J. Enzyme-assisted extraction, characterization, and in vitro antioxidant activity of polysaccharides from Potentilla anserina L. Front Nutr 2023; 10:1216572. [PMID: 37528998 PMCID: PMC10388540 DOI: 10.3389/fnut.2023.1216572] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 06/23/2023] [Indexed: 08/03/2023] Open
Abstract
Introduction Potentilla anserina (Potentilla anserina L.), also known as ginseng fruit, is a plant that can be used as both medicine and food. Potentilla anserina L. has high medical value in Chinese medicine, such as strengthening the spleen and stomach, replenishing qi and blood, and astringing hemostasis. Methods In this study, polysaccharides of Potentilla anserina L. were extracted from the root using an enzyme-assisted extraction method. According to the principle of Box-Behnken design, response surface methodology was designed to optimize the extraction conditions. Fourier transform infrared spectroscopy and scanning electron microscopy were used to investigate the structure and appearance of Potentilla anserina L. polysaccharides. The monosaccharide composition of Potentilla anserina L. polysaccharides was determined using high-performance liquid chromatography. The antioxidant activities were also studied. Results Under the optimal extraction conditions (the ratio of solid to liquid, 1:15; ratio of cellulase to pectinase, 1:2; extraction pH, 8.0; enzyme reaction temperature, 60°C), the extraction yield of Potentilla anserina L. polysaccharides was 19.80 ± 0.01%, equal to the model prediction value 19.84%. The data of Fourier transform infrared spectrum, scanning electron microscopy, and high-performance liquid chromatography showed that the Potentilla anserina L. polysaccharide was a kind of α-pyran polysaccharide, mainly consisting of galactose, glucose, rhamnose, and arabinose. The antioxidant results showed that Potentilla anserina L. polysaccharides had a strong hydroxyl radical scavenging ability (IC50 = 0.367 mg/mL), superoxide anion scavenging ability (IC50 = 45.017 mg/mL), and a certain degree of total reducing ability. Discussion Enzyme-assisted extraction is an efficient method to extract Potentilla anserina L. polysaccharides. The Potentilla anserina L. polysaccharides could have potential use in functional foods as a natural antioxidant.
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Affiliation(s)
- Penghui Guo
- College of Life Sciences and Engineering, Northwest Minzu University, Lanzhou, China
- Taizishan Ecosystem Observatory of Carbon Neutralization, Northwest Minzu University, Lanzhou, China
| | - Hong Chen
- College of Life Sciences and Engineering, Northwest Minzu University, Lanzhou, China
- Taizishan Ecosystem Observatory of Carbon Neutralization, Northwest Minzu University, Lanzhou, China
| | - Jinpu Ma
- College of Life Sciences and Engineering, Northwest Minzu University, Lanzhou, China
- Taizishan Ecosystem Observatory of Carbon Neutralization, Northwest Minzu University, Lanzhou, China
| | - Yuxuan Zhang
- College of Life Sciences and Engineering, Northwest Minzu University, Lanzhou, China
- Taizishan Ecosystem Observatory of Carbon Neutralization, Northwest Minzu University, Lanzhou, China
| | - Hongfu Chen
- College of Life Sciences and Engineering, Northwest Minzu University, Lanzhou, China
- Taizishan Ecosystem Observatory of Carbon Neutralization, Northwest Minzu University, Lanzhou, China
| | - Ti Wei
- College of Life Sciences and Engineering, Northwest Minzu University, Lanzhou, China
- Taizishan Ecosystem Observatory of Carbon Neutralization, Northwest Minzu University, Lanzhou, China
| | - Dandan Gao
- College of Life Sciences and Engineering, Northwest Minzu University, Lanzhou, China
- Taizishan Ecosystem Observatory of Carbon Neutralization, Northwest Minzu University, Lanzhou, China
| | - Jiansheng Li
- Nephropathy Department, Gansu Provincial Hospital of Traditional Chinese Medicine, Lanzhou, China
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