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Xiao CL, Lai HT, Zhou JJ, Liu WY, Zhao M, Zhao K. Nrf2 Signaling Pathway: Focus on Oxidative Stress in Spinal Cord Injury. Mol Neurobiol 2024:10.1007/s12035-024-04394-z. [PMID: 39093381 DOI: 10.1007/s12035-024-04394-z] [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: 12/11/2023] [Accepted: 07/22/2024] [Indexed: 08/04/2024]
Abstract
Spinal cord injury (SCI) is a serious, disabling injury to the central nervous system that can lead to motor, sensory, and autonomic dysfunction below the injury plane. SCI can be divided into primary injury and secondary injury according to its pathophysiological process. Primary injury is irreversible in most cases, while secondary injury is a dynamic regulatory process. Secondary injury involves a series of pathological events, such as ischemia, oxidative stress, inflammatory events, apoptotic pathways, and motor dysfunction. Among them, oxidative stress is an important pathological event of secondary injury. Oxidative stress causes a series of destructive events such as lipid peroxidation, DNA damage, inflammation, and cell death, which further worsens the microenvironment of the injured site and leads to neurological dysfunction. The nuclear factor erythrocyte 2-associated factor 2 (Nrf2) is considered to be a key pathway of antioxidative stress and is closely related to the pathological process of SCI. Activation of this pathway can effectively inhibit the oxidative stress process and promote the recovery of nerve function after SCI. Therefore, the Nrf2 pathway may be a potential therapeutic target for SCI. This review deeply analyzed the generation of oxidative stress in SCI, the role and mechanism of Nrf2 as the main regulator of antioxidant stress in SCI, and the influence of cross-talk between Nrf2 and related pathways that may be involved in the pathological regulation of SCI on oxidative stress, and summarized the drugs and other treatment methods based on Nrf2 pathway regulation. The objective of this paper is to provide evidence for the role of Nrf2 activation in SCI and to highlight the important role of Nrf2 in alleviating SCI by elucidating the mechanism, so as to provide a theoretical basis for targeting Nrf2 pathway as a therapy for SCI.
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Affiliation(s)
- Chun-Lin Xiao
- Gannan Medical University, 1 Harmony Avenue, Rongjiang New District, Ganzhou, Jiangxi Province, 341000, People's Republic of China
- Department of Orthopaedics, Frist Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, 341000, People's Republic of China
| | - Hong-Tong Lai
- Gannan Medical University, 1 Harmony Avenue, Rongjiang New District, Ganzhou, Jiangxi Province, 341000, People's Republic of China
- Department of Orthopaedics, Frist Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, 341000, People's Republic of China
| | - Jiang-Jun Zhou
- Hospital 908, Joint Logistics Support Force, 1028 Jinggangshan Avenue, Qingyunpu District, Nanchang City, Jiangxi Province, 330001, People's Republic of China
| | - Wu-Yang Liu
- Gannan Medical University, 1 Harmony Avenue, Rongjiang New District, Ganzhou, Jiangxi Province, 341000, People's Republic of China
- Department of Orthopaedics, Frist Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, 341000, People's Republic of China
| | - Min Zhao
- Department of Spine Surgery, Yingtan People's Hospital, 116 Shengli West Road, Yuehu District, Yingtan City, Jiangxi Province, 335000, People's Republic of China.
| | - Kai Zhao
- Gannan Medical University, 1 Harmony Avenue, Rongjiang New District, Ganzhou, Jiangxi Province, 341000, People's Republic of China.
- Department of Orthopaedics, Frist Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, 341000, People's Republic of China.
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He W, Ke X, Li T, Wu Y, Tang X, Chen W, Liu T, Du H. Comparison and improvement of RNA extraction methods in Sargassum (Phaeophyta). JOURNAL OF PHYCOLOGY 2023; 59:822-834. [PMID: 37656660 DOI: 10.1111/jpy.13375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 09/03/2023]
Abstract
Sargassum (Sargassaceae) is widely distributed globally and plays an important role in regulating climate change, but the landscape of genomes and transcripts is less known. High-quality nucleic acids are the basis for molecular biology experiments such as high-throughput sequencing. Although extensive studies have documented methods of RNA extraction, these methods are not very applicable to Sargassum, which contains high levels of polysaccharides and polyphenols. To find a suitable method to improve the quality of RNA extracted, we compared and modified several popular RNA extraction methods and screened one practical method with three specific Sargassum spp. The results showed that three CTAB methods (denoted as Methods 1, 2, and 3) and the RNAprep Pure Plant Kit (denoted as Method 4) could, with slight modifications, effectively isolate RNA from Sargassum species, except for Method 4 used with S. fusiforme. By performing further screening, we determined Method 4 was the best choice for S. hemiphyllum and S. henslowianum, as revealed by RNA yields, RNA Integrity Number (RIN), extraction time, and unigene mapped ratio. For S. fusiforme, Methods 1, 2, and 3 showed no obvious differences among the yields, quality, or time to perform. In addition, one other method was tested, but we found the quality of the RNA extracted by TRIzol reagent methods (denoted as Method 5) performed the worst when compared with the above four methods. Therefore, our study provides four suitable methods for RNA extraction in Sargassum and is essential for future genetic exploration of Sargassum.
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Affiliation(s)
- Weiling He
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, China
| | - Xiao Ke
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, China
| | - Tangcheng Li
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, China
| | - Yuming Wu
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, China
| | - Xianming Tang
- Hainan Provincial Key Laboratory of Tropical Maricultural Technology, Hainan Academy of Ocean and Fisheries Sciences, Haikou, China
| | - Weizhou Chen
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, China
| | - Tao Liu
- State Key Laboratory of Marine Environmental Science & College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
| | - Hong Du
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, China
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Ahmed N, El-Tabakh MAM, Mohamed HF, Wu X, Xu C, Huang L. Molecular docking and antibacterial activity of Sargassum fusiforme extracts against major coral pathogens. World J Microbiol Biotechnol 2023; 39:318. [PMID: 37743438 DOI: 10.1007/s11274-023-03752-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 09/04/2023] [Indexed: 09/26/2023]
Abstract
The present study evaluates the antibacterial properties of alkaloids and the crude extracts (ethanol, n-hexane and ethyl acetate) from seaweed Sargassum fusiforme against coral pathogens (Photobacterium galatheae, Vibrio harveyi, Bordetella trematum, and Ochrobactrum pseudogrignonese) isolated from coral Porites lutea. To our knowledge, this is the first in vitro assay for such extracts on Porites lutea coral pathogens. Bacterial pathogens have been identified using 16S RNA and BankIt into gene bank and given the accession numbers (OR401000; OR401001; OR401336, and OR400998 respectively). GC-Mass profiling conducted for n-hexane compounds confirmed the presence of thirty-eight molecules, twelve of which have been previously reported for their bioactivity. The results revealed that alkaloids and n-hexane extract demonstrated eminent antibacterial activity compared to the other extracts against the tested coral pathogenic bacteria. Molecular docking was conducted to evaluate the twelve previously mentioned bioactive molecules to get a full understanding of the interaction of those bioactive molecules on vital bacterial proteins (Hemolysin protein (PDB ID: 1XEZ) and Cytoplasmic proteins (PDB ID: 3TZC)). Docked twelve molecules against hemolysin protein (PDB ID: 1XEZ) came exactly in line with the docked result of the same molecules with cytoplasmic proteins (PDB ID: 3TZC), proving the bioactivity of 6-O-Palmitoyl-L-ascorbic acid, 3TMS derivative; Glycerol monostearate, 2TMS derivative and Eicosanoic acid complexes in antibacterial activity action and score higher than reference ligand. Those three compounds will be investigated separately in future in vitro assay soon. Our conclusions align with the study's antibacterial in vitro assay results. The present study reports the novelty of different extracts of S. fusiforme as an antibacterial agent against coral pathogenic bacteria that trigger diseases in Porites lutea.
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Affiliation(s)
- Nedaa Ahmed
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361005, People's Republic of China.
- College of the Environment & Ecology, Xiamen University, Xiang'an district, Xiamen, 361102, People's Republic of China.
- Faculty of Science, Botany & Microbiology Department (Girls Branch), Al-Azhar University, Cairo, Egypt.
| | - Mohamed A M El-Tabakh
- Faculty of Science, Marine Biology and Ichthyology Branch, Zoology Department (Boys Branch), Al-Azhar University, Cairo, Egypt
| | - Hala F Mohamed
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361005, People's Republic of China
- Faculty of Science, Botany & Microbiology Department (Girls Branch), Al-Azhar University, Cairo, Egypt
| | - Xudong Wu
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361005, People's Republic of China
| | - Changan Xu
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361005, People's Republic of China
| | - Lingfeng Huang
- College of the Environment & Ecology, Xiamen University, Xiang'an district, Xiamen, 361102, People's Republic of China
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Deng R, Wang F, Wang L, Xiong L, Shen X, Song H. Advances in Plant Polysaccharides as Antiaging Agents: Effects and Signaling Mechanisms. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:7175-7191. [PMID: 37155561 DOI: 10.1021/acs.jafc.3c00493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Aging refers to the gradual physiological changes that occur in an organism after reaching adulthood, resulting in senescence and a decline in biological functions, ultimately leading to death. Epidemiological evidence shows that aging is a driving factor in the developing of various diseases, including cardiovascular diseases, neurodegenerative diseases, immune system disorders, cancer, and chronic low-grade inflammation. Natural plant polysaccharides have emerged as crucial food components in delaying the aging process. Therefore, it is essential to continuously investigate plant polysaccharides as potential sources of new pharmaceuticals for aging. Modern pharmacological research indicates that plant polysaccharides can exert antiaging effects by scavenging free radicals, increasing telomerase activity, regulating apoptosis, enhancing immunity, inhibiting glycosylation, improving mitochondrial dysfunction regulating gene expression, activating autophagy, and modulating gut microbiota. Moreover, the antiaging activity of plant polysaccharides is mediated by one or more signaling pathways, including IIS, mTOR, Nrf2, NF-κB, Sirtuin, p53, MAPK, and UPR signaling pathways. This review summarizes the antiaging properties of plant polysaccharides and signaling pathways participating in the polysaccharide-regulating aging process. Finally, we discuss the structure-activity relationships of antiaging polysaccharides.
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Affiliation(s)
- Rou Deng
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China
| | - Fang Wang
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China
| | - Luanfeng Wang
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China
| | - Ling Xiong
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China
| | - Xinchun Shen
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China
| | - Haizhao Song
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China
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Luo JH, Li J, Shen ZC, Lin XF, Chen AQ, Wang YF, Gong ES, Liu D, Zou Q, Wang XY. Advances in health-promoting effects of natural polysaccharides: Regulation on Nrf2 antioxidant pathway. Front Nutr 2023; 10:1102146. [PMID: 36875839 PMCID: PMC9978827 DOI: 10.3389/fnut.2023.1102146] [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: 11/18/2022] [Accepted: 01/30/2023] [Indexed: 02/18/2023] Open
Abstract
Natural polysaccharides (NPs) possess numerous health-promoting effects, such as liver protection, kidney protection, lung protection, neuroprotection, cardioprotection, gastrointestinal protection, anti-oxidation, anti-diabetic, and anti-aging. Nuclear factor erythroid 2-related factor 2 (Nrf2) antioxidant pathway is an important endogenous antioxidant pathway, which plays crucial roles in maintaining human health as its protection against oxidative stress. Accumulating evidence suggested that Nrf2 antioxidant pathway might be one of key regulatory targets for the health-promoting effects of NPs. However, the information concerning regulation of NPs on Nrf2 antioxidant pathway is scattered, and NPs show different regulatory behaviors in their different health-promoting processes. Therefore, in this article, structural features of NPs having regulation on Nrf2 antioxidant pathway are overviewed. Moreover, regulatory effects of NPs on this pathway for health-promoting effects are summarized. Furthermore, structure-activity relationship of NPs for health-promoting effects by regulating the pathway is preliminarily discussed. Otherwise, the prospects on future work for regulation of NPs on this pathway are proposed. This review is beneficial to well-understanding of underlying mechanisms for health-promoting effects of NPs from the view angle of Nrf2 antioxidant pathway, and provides a theoretical basis for the development and utilization of NPs in promoting human health.
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Affiliation(s)
- Jiang-Hong Luo
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Jing Li
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Zi-Chun Shen
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Xiao-Fan Lin
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Ao-Qiu Chen
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Yi-Fei Wang
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Er-Sheng Gong
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China.,Key Laboratory of Environment and Health of Ganzhou, Gannan Medical University, Ganzhou, China
| | - Dan Liu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang, College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, China
| | - Qi Zou
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China.,Key Laboratory of Environment and Health of Ganzhou, Gannan Medical University, Ganzhou, China
| | - Xiao-Yin Wang
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China.,Key Laboratory of Environment and Health of Ganzhou, Gannan Medical University, Ganzhou, China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
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Antioxidant Activities of Natural Polysaccharides and Their Derivatives for Biomedical and Medicinal Applications. Antioxidants (Basel) 2022; 11:antiox11122491. [PMID: 36552700 PMCID: PMC9774958 DOI: 10.3390/antiox11122491] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/08/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
Many chronic diseases such as Alzheimer's disease, diabetes, and cardiovascular diseases are closely related to in vivo oxidative stress caused by excessive reactive oxygen species (ROS). Natural polysaccharides, as a kind of biomacromolecule with good biocompatibility, have been widely used in biomedical and medicinal applications due to their superior antioxidant properties. In this review, scientometric analysis of the highly cited papers in the Web of Science (WOS) database finds that antioxidant activity is the most widely studied and popular among pharmacological effects of natural polysaccharides. The antioxidant mechanisms of natural polysaccharides mainly contain the regulation of signal transduction pathways, the activation of enzymes, and the scavenging of free radicals. We continuously discuss the antioxidant activities of natural polysaccharides and their derivatives. At the same time, we summarize their applications in the field of pharmaceutics/drug delivery, tissue engineering, and antimicrobial food additives/packaging materials. Overall, this review provides up-to-date information for the further development and application of natural polysaccharides with antioxidant activities.
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Yang Y, Liang M, Ouyang D, Tong H, Wu M, Su L. Research Progress on the Protective Effect of Brown Algae-Derived Polysaccharides on Metabolic Diseases and Intestinal Barrier Injury. Int J Mol Sci 2022; 23:10784. [PMID: 36142699 PMCID: PMC9503908 DOI: 10.3390/ijms231810784] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
In the human body, the intestine is the largest digestive and immune organ, where nutrients are digested and absorbed, and this organ plays a key role in host immunity. In recent years, intestinal health issues have gained attention and many studies have shown that oxidative stress, inflammation, intestinal barrier damage, and an imbalance of intestinal microbiota may cause a range of intestinal diseases, as well as other problems. Brown algae polysaccharides, mainly including alginate, fucoidan, and laminaran, are food-derived natural products that have received wide attention from scholars owing to their good biological activity and low toxic side effects. It has been found that brown algae polysaccharides can repair intestinal physical, chemical, immune and biological barrier damage. Principally, this review describes the protective effects and mechanisms of brown algae-derived polysaccharides on intestinal health, as indicated by the ability of polysaccharides to maintain intestinal barrier integrity, inhibit lipid peroxidation-associated damage, and suppress inflammatory cytokines. Furthermore, our review aims to provide new ideas on the prevention and treatment of intestinal diseases and act as a reference for the development of fucoidan as a functional product for intestinal protection.
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Affiliation(s)
- Ying Yang
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China
| | - Meina Liang
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China
| | - Dan Ouyang
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China
| | - Haibin Tong
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China
| | - Mingjiang Wu
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China
| | - Laijin Su
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China
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Antiaging Effects of Dietary Polysaccharides: Advance and Mechanisms. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:4362479. [PMID: 35864870 PMCID: PMC9296321 DOI: 10.1155/2022/4362479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 06/12/2022] [Accepted: 06/25/2022] [Indexed: 11/18/2022]
Abstract
Aging is a process in which the various physiological functions of the body gradually deteriorate and eventually lead to death. During this process, the body’s resistance to external stresses gradually decreases and the aging-related diseases gradually are increased. Polysaccharides are a group of active substances extracted from living organisms and are widely found in plants, animals, and microorganisms. In the last decade, a variety of natural polysaccharides from functional and medicinal foods have attracted considerable interest for their beneficial effects in the prevention of chronic diseases such as cancers, diabetes, and neurodegenerative diseases. Interestingly, these polysaccharides have also been found to delay aging by reducing oxidative damage, inhibiting telomere shortening, and being anti-inflammatory in different animal models of aging. These reviews summarized the progresses in effects of polysaccharides on antiaging and the potential mechanisms and especially focused on the signaling pathways involved in the antiaging functions. Finally, the applications and prospects of the antiaging effects of polysaccharides are discussed.
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Yang W, Chen J, Guo G, Wang S, Peng S, Gao Z, Zhao Z, Lan R, Yin F. The Effects of Fucoidan Dietary Supplementation on Growth Performance, Serum Antioxidant Capacity, Immune Function Indices and Intestinal Morphology in Weaned Kids. Animals (Basel) 2022; 12:ani12050574. [PMID: 35268143 PMCID: PMC8909077 DOI: 10.3390/ani12050574] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/21/2022] [Accepted: 02/21/2022] [Indexed: 02/06/2023] Open
Abstract
The purpose of this study was to evaluate the effects of fucoidan dietary supplementation on growth performance, organs’ relative weight, serum anti-oxidation markers, immune function indices and intestinal morphology in weaned kids. A total of 60 2-month-old weaned castrated male kids (Chuanzhong black goat) were used for this 30-day experiment and randomly allocated to four groups. The control group (CON) fed a basal diet, while the other three groups were provided with the same diet further supplemented with fucoidan at 0.1%, 0.3% or 0.5%, namely, F1, F2 and F3 groups, respectively. The results indicated that dietary fucoidan supplementation significantly increased (p < 0.05) the activity of catalase (CAT) when compared to the CON group on day 15. Moreover, the addition of fucoidan at 0.3% and 0.5% significantly increased (p < 0.05) the activities of glutathione peroxidase (GSH-Px) and total superoxide dismutase (T-SOD). On day 30, dietary fucoidan supplementation significantly reduced (p < 0.05) the feed conversion rate (FCR), contents of tumor necrosis-α (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6), while it significantly increased (p < 0.05) the activity of total superoxide dismutase (T-SOD), the content of immunoglobulin G (IgG) and the villus height (VH) of the duodenum. Moreover, dietary 0.3% and 0.5% fucoidan supplementation significantly increased (p < 0.05) the villus height (VH) of the jejunum and ileum and significantly reduced (p < 0.05) the crypt depth (CD) of ileum. In conclusion, dietary fucoidan had positive effects on growth performance, serum anti-oxidation, immune function and intestinal morphology of weaned kids.
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Priddy C, Li J. The role of the Nrf2/Keap1 signaling cascade in mechanobiology and bone health. Bone Rep 2021; 15:101149. [PMID: 34869801 PMCID: PMC8626578 DOI: 10.1016/j.bonr.2021.101149] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 11/06/2021] [Accepted: 11/15/2021] [Indexed: 12/12/2022] Open
Abstract
In conjunction with advancements in modern medicine, bone health is becoming an increasingly prevalent concern among a global population with an ever-growing life expectancy. Countless factors contribute to declining bone strength, and age exacerbates nearly all of them. The detrimental effects of bone loss have a profound impact on quality of life. As such, there is a great need for full exploration of potential therapeutic targets that may provide antiaging benefits and increase the life and strength of bone tissues. The Keap1-Nrf2 pathway is a promising avenue of this research. The cytoprotective and antioxidant functions of this pathway have been shown to mitigate the deleterious effects of oxidative stress on bone tissues, but the exact cellular and molecular mechanisms by which this occurs are not yet fully understood. Presently, refined animal and loading models are allowing exploration into the effect of the Keap1-Nrf2 pathway in a tissue-specific or even cell-specific manner. In addition, Nrf2 activators currently undergoing clinical trials can be utilized to investigate the particular cellular mechanisms at work in this cytoprotective cascade. Although the timing and dosing of treatment with Nrf2 activators need to be further investigated, these activators have great potential to be used clinically to prevent and treat osteoporosis.
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Affiliation(s)
- Carlie Priddy
- Department of Biology, Indiana University – Purdue University Indianapolis, Indianapolis, IN, USA
| | - Jiliang Li
- Department of Biology, Indiana University – Purdue University Indianapolis, Indianapolis, IN, USA
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Sheng X, Zhu Y, Zhou J, Yan L, Du G, Liu Z, Chen H. Antioxidant Effects of Caffeic Acid Lead to Protection of Drosophila Intestinal Stem Cell Aging. Front Cell Dev Biol 2021; 9:735483. [PMID: 34568344 PMCID: PMC8458758 DOI: 10.3389/fcell.2021.735483] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 08/17/2021] [Indexed: 02/05/2023] Open
Abstract
The dysfunction or exhaustion of adult stem cells during aging is closely linked to tissue aging and age-related diseases. Circumventing this aging-related exhaustion of adult stem cells could significantly alleviate the functional decline of organs. Therefore, identifying small molecular compounds that could prevent the age-related decline of stem cell function is a primary goal in anti-aging research. Caffeic acid (CA), a phenolic compound synthesized in plants, offers substantial health benefits for multiple age-related diseases and aging. However, the effects of CA on adult stem cells remain largely unknown. Using the Drosophila midgut as a model, this study showed that oral administration with CA significantly delayed age-associated Drosophila gut dysplasia caused by the dysregulation of intestinal stem cells (ISCs) upon aging. Moreover, administering CA retarded the decline of intestinal functions in aged Drosophila and prevented hyperproliferation of age-associated ISC by suppressing oxidative stress-associated JNK signaling. On the other hand, CA supplementation significantly ameliorated the gut hyperplasia defect and reduced environmentally induced mortality, revealing the positive effects of CA on tolerance to stress responses. Taken together, our findings report a crucial role of CA in delaying age-related changes in ISCs of Drosophila.
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Affiliation(s)
- Xiao Sheng
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yuedan Zhu
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Juanyu Zhou
- Laboratory of Metabolism and Aging Research, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - La Yan
- Laboratory of Metabolism and Aging Research, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Gang Du
- Laboratory of Metabolism and Aging Research, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Zhiming Liu
- Laboratory of Metabolism and Aging Research, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Haiyang Chen
- Laboratory of Metabolism and Aging Research, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
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Xu Y, Huang X, Luo Q, Zhang X. MicroRNAs Involved in Oxidative Stress Processes Regulating Physiological and Pathological Responses. Microrna 2021; 10:164-180. [PMID: 34279211 DOI: 10.2174/2211536610666210716153929] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 05/16/2021] [Accepted: 05/18/2021] [Indexed: 11/22/2022]
Abstract
Oxidative stress influences several physiological and pathological cellular events, including cell differentiation, excessive growth, proliferation, apoptosis, and the inflammatory response. Therefore, oxidative stress is involved in the pathogenesis of various diseases, including pulmonary fibrosis, epilepsy, hypertension, atherosclerosis, Parkinson's disease, cardiovascular disease, and Alzheimer's disease. Recent studies have shown that several microRNAs (miRNAs) are involved in developing various diseases caused by oxidative stress and that miRNAs may be helpful to determine the inflammatory characteristics of immune responses during infection and disease. This review describes the known effects of miRNAs on reactive oxygen species to induce oxidative stress and the miRNA regulatory mechanisms involved in the uncoupling of Keap1-Nrf2 complexes. Finally, we summarized the functions of miRNAs in several antioxidant genes. Understanding the crosstalk between miRNAs and oxidative stress-inducing factors during physiological and pathological cellular events may have implications for designing more effective treatments for immune diseases.
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Affiliation(s)
- Yongjie Xu
- Guangdong Provincial Key Laboratory of Conservation and Precision Utilization of Characteristic Agricultural Resources in Mountainous Areas, School of Life Science of Jiaying University, Guangdong Innovation Centre for Science and Technology of Wuhua Yellow Chicken, Meizhou 514015, China
| | - Xunhe Huang
- Guangdong Provincial Key Laboratory of Conservation and Precision Utilization of Characteristic Agricultural Resources in Mountainous Areas, School of Life Science of Jiaying University, Guangdong Innovation Centre for Science and Technology of Wuhua Yellow Chicken, Meizhou 514015, China
| | - Qingbin Luo
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science/ Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China
| | - Xiquan Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science/ Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China
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13
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Chathuranga K, Weerawardhana A, Dodantenna N, Ranathunga L, Cho WK, Ma JY, Lee JS. Inhibitory Effect of Sargassum fusiforme and Its Components on Replication of Respiratory Syncytial Virus In Vitro and In Vivo. Viruses 2021; 13:548. [PMID: 33806073 PMCID: PMC8064456 DOI: 10.3390/v13040548] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 12/23/2022] Open
Abstract
Sargassum fusiforme, a plant used as a medicine and food, is regarded as a marine vegetable and health supplement to improve life expectancy. Here, we demonstrate that S. fusiforme extract (SFE) has antiviral effects against respiratory syncytial virus (RSV) in vitro and in vivo mouse model. Treatment of HEp2 cells with a non-cytotoxic concentration of SFE significantly reduced RSV replication, RSV-induced cell death, RSV gene transcription, RSV protein synthesis, and syncytium formation. Moreover, oral inoculation of SFE significantly improved RSV clearance from the lungs of BALB/c mice. Interestingly, the phenolic compounds eicosane, docosane, and tetracosane were identified as active components of SFE. Treatment with a non-cytotoxic concentration of these three components elicited similar antiviral effects against RSV infection as SFE in vitro. Together, these results suggest that SFE and its potential components are a promising natural antiviral agent candidate against RSV infection.
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Affiliation(s)
- Kiramage Chathuranga
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea; (K.C.); (A.W.); (N.D.); (L.R.)
| | - Asela Weerawardhana
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea; (K.C.); (A.W.); (N.D.); (L.R.)
| | - Niranjan Dodantenna
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea; (K.C.); (A.W.); (N.D.); (L.R.)
| | - Lakmal Ranathunga
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea; (K.C.); (A.W.); (N.D.); (L.R.)
| | - Won-Kyung Cho
- Korean Medicine Application Center, Korea Institute of Oriental Medicine, Daegu 41062, Korea; (W.-K.C.); (J.Y.M.)
| | - Jin Yeul Ma
- Korean Medicine Application Center, Korea Institute of Oriental Medicine, Daegu 41062, Korea; (W.-K.C.); (J.Y.M.)
| | - Jong-Soo Lee
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea; (K.C.); (A.W.); (N.D.); (L.R.)
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14
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Yi Y, Xu W, Fan Y, Wang HX. Drosophila as an emerging model organism for studies of food-derived antioxidants. Food Res Int 2021; 143:110307. [PMID: 33992327 DOI: 10.1016/j.foodres.2021.110307] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/06/2021] [Accepted: 03/06/2021] [Indexed: 01/18/2023]
Abstract
Dietary supplementation with antioxidants provides health benefits by preventing diseases caused by oxidative stress and damage. Consequently, there has been growing interest in the study of antioxidative foods and their active ingredients. Oxidative stress and antioxidative responses are mechanistically conserved from Drosophila to mammals. Therefore, as a well-established model organism with a short life cycle and advantages of genetic manipulation, the fruit fly has been increasingly employed to assess functions of antioxidants in vivo. In this review, the antioxidative defense mechanisms, methods used and assays developed in Drosophila to evaluate antioxidant supplementation, are highlighted. The main manifestations of antioxidation include reduction of reactive species, up-regulation of endogenous antioxidants, inhibition on oxidative damage to biomacromolecules, enhanced resistance against oxidative stress and extension of lifespan, which are related to the activations of nuclear factor erythroid 2-related factor 2-antioxidant response element pathway and other adaptive responses. Moreover, the key considerations and future perspectives for the application of Drosophila models in the studies of food-derived antioxidants are discussed.
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Affiliation(s)
- Yang Yi
- College of Food Science & Engineering, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Wei Xu
- College of Food Science & Engineering, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Yun Fan
- School of Biosciences, University of Birmingham, Birmingham B15 2TT, UK.
| | - Hong-Xun Wang
- College of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan 430023, China.
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15
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Mechanisms of Oxidative Stress and Therapeutic Targets following Intracerebral Hemorrhage. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:8815441. [PMID: 33688394 PMCID: PMC7920740 DOI: 10.1155/2021/8815441] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 01/17/2021] [Accepted: 02/10/2021] [Indexed: 12/17/2022]
Abstract
Oxidative stress (OS) is induced by the accumulation of reactive oxygen species (ROS) following intracerebral hemorrhage (ICH) and plays an important role in secondary brain injury caused by the inflammatory response, apoptosis, autophagy, and blood-brain barrier (BBB) disruption. This review summarizes the current state of knowledge regarding the pathogenic mechanisms of brain injury after ICH, markers for detecting OS, and therapeutic strategies that target OS to mitigate brain injury.
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16
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Liu Z, Sun X. A Critical Review of the Abilities, Determinants, and Possible Molecular Mechanisms of Seaweed Polysaccharides Antioxidants. Int J Mol Sci 2020; 21:E7774. [PMID: 33096625 PMCID: PMC7589308 DOI: 10.3390/ijms21207774] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/12/2020] [Accepted: 10/16/2020] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress induces various cardiovascular, neurodegenerative, and cancer diseases, caused by excess reactive oxygen species (ROS). It is attributed to the lack of sufficient antioxidant defense capacity to eliminate unnecessary ROS. Seaweeds are largely cultivated for their edible and commercial purposes. Excessive proliferation of some seaweeds has occurred in coastal areas, causing environmental and economic disasters, and even threating human health. Removing and disposing of the excess seaweeds are costly and labor-intensive with few rewards. Therefore, improving the value of seaweeds utilizes this resource, but also deals with the accumulated biomass in the environment. Seaweed has been demonstrated to be a great source of polysaccharides antioxidants, which are effective in enhancing the antioxidant system in humans and animals. They have been reported to be a healthful method to prevent and/or reduce oxidative damage. Current studies indicate that they have a good potential for treating various diseases. Polysaccharides, the main components in seaweeds, are commonly used as industrial feedstock. They are readily extracted by aqueous and acetone solutions. This study attempts to review the current researches related to seaweed polysaccharides as an antioxidant. We discuss the main categories, their antioxidant abilities, their determinants, and their possible molecular mechanisms of action. This review proposes possible high-value ways to utilize seaweed resources.
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Affiliation(s)
- Zhiwei Liu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China;
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, Guangzhou 511458, China
| | - Xian Sun
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, Guangzhou 511458, China
- Zhuhai Key Laboratory of Marine Bioresources and Environment, School of Marine Sciences, Sun Yat-Sen University, Guangzhou 510275, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519080, China
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17
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Zhang Y, Zuo J, Yan L, Cheng Y, Li Q, Wu S, Chen L, Thring RW, Yang Y, Gao Y, Wu M, Tong H. Sargassum fusiforme Fucoidan Alleviates High-Fat Diet-Induced Obesity and Insulin Resistance Associated with the Improvement of Hepatic Oxidative Stress and Gut Microbiota Profile. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:10626-10638. [PMID: 32866006 DOI: 10.1021/acs.jafc.0c02555] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Sargassum fusiforme fucoidan (SFF) exhibits diverse biological activities. Insulin resistance (IR) implicated in type 2 diabetes (T2D) has become an epidemic health issue worldwide. In this study, we investigated whether SFF can improve insulin sensitivity in high-fat diet (HFD)-fed mice. Our present data showed that SFF significantly reduced fasting blood glucose and IR index along with improved glucose tolerance. Impaired phosphorylation of Akt was also restored by SFF. Furthermore, SFF decreased the levels of MDA and 4-HNE-modified protein and increased GSH/GSSG ratio as well as elevated antioxidant enzymes and activated Nrf2 signaling. SFF also increased the abundance and diversity of gut microbiota in the obese mice, as well as improved intestinal integrity and inflammation. Our findings suggested that SFF ameliorated HFD-induced IR through activating the Nrf2 pathway, remodeling gut microbiota, and reducing intestinal inflammation, thus providing a novel perspective into the treatment strategy on metabolic disease.
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Affiliation(s)
- Ya Zhang
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
- Environmental Science and Environmental Engineering, University of Northern British Columbia, Prince George, British Columbia, Canada V2N 4Z9
| | - Jihui Zuo
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Liping Yan
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Yang Cheng
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Qiaojuan Li
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Siya Wu
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Ling Chen
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Ronald W Thring
- Environmental Science and Environmental Engineering, University of Northern British Columbia, Prince George, British Columbia, Canada V2N 4Z9
| | - Yue Yang
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Yitian Gao
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Mingjiang Wu
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Haibin Tong
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
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Zayed A, Ulber R. Fucoidans: Downstream Processes and Recent Applications. Mar Drugs 2020; 18:E170. [PMID: 32197549 PMCID: PMC7142712 DOI: 10.3390/md18030170] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/14/2020] [Accepted: 03/15/2020] [Indexed: 02/06/2023] Open
Abstract
Fucoidans are multifunctional marine macromolecules that are subjected to numerous and various downstream processes during their production. These processes were considered the most important abiotic factors affecting fucoidan chemical skeletons, quality, physicochemical properties, biological properties and industrial applications. Since a universal protocol for fucoidans production has not been established yet, all the currently used processes were presented and justified. The current article complements our previous articles in the fucoidans field, provides an updated overview regarding the different downstream processes, including pre-treatment, extraction, purification and enzymatic modification processes, and shows the recent non-traditional applications of fucoidans in relation to their characters.
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Affiliation(s)
- Ahmed Zayed
- Institute of Bioprocess Engineering, Technical University of Kaiserslautern, Gottlieb-Daimler-Straße 49, 67663 Kaiserslautern, Germany;
- Department of Pharmacognosy, Tanta University, College of Pharmacy, El Guish Street, Tanta 31527, Egypt
| | - Roland Ulber
- Institute of Bioprocess Engineering, Technical University of Kaiserslautern, Gottlieb-Daimler-Straße 49, 67663 Kaiserslautern, Germany;
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