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Huang Y, Cao J, Zhu M, Wang Z, Jin Z, Xiong Z. Nontoxigenic Bacteroides fragilis: A double-edged sword. Microbiol Res 2024; 286:127796. [PMID: 38870618 DOI: 10.1016/j.micres.2024.127796] [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: 09/23/2023] [Revised: 04/12/2024] [Accepted: 05/31/2024] [Indexed: 06/15/2024]
Abstract
The contribution of commensal microbes to human health and disease is unknown. Bacteroides fragilis (B. fragilis) is an opportunistic pathogen and a common colonizer of the human gut. Nontoxigenic B. fragilis (NTBF) and enterotoxigenic B. fragilis (ETBF) are two kinds of B. fragilis. NTBF has been shown to affect the host immune system and interact with gut microbes and pathogenic microbes. Previous studies indicated that certain strains of B. fragilis have the potential to serve as probiotics, based on their observed relationship with the immune system. However, several recent studies have shown detrimental effects on the host when beneficial gut bacteria are found in the digestive system or elsewhere. In some pathological conditions, NTBF may have adverse reactions. This paper presents a comprehensive analysis of NTBF ecology from the host-microbe perspective, encompassing molecular disease mechanisms analysis, bacteria-bacteria interaction, bacteria-host interaction, and the intricate ecological context of the gut. Our review provides much-needed insights into the precise application of NTBF.
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Affiliation(s)
- Yumei Huang
- Department of Gastroenterology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jiali Cao
- Department of Gastroenterology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Mengpei Zhu
- Department of Gastroenterology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ziwen Wang
- Department of Gastroenterology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ze Jin
- Department of Gastroenterology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhifan Xiong
- Department of Gastroenterology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
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2
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Al Shamsi HSS, Rainey-Smith SR, Gardener SL, Sohrabi HR, Canovas R, Martins RN, Fernando WMADB. The Relationship between Diet, Depression, and Alzheimer's Disease: A Narrative Review. Mol Nutr Food Res 2024; 68:e2300419. [PMID: 38973221 DOI: 10.1002/mnfr.202300419] [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: 06/18/2023] [Revised: 02/02/2024] [Indexed: 07/09/2024]
Abstract
PURPOSE OF REVIEW This narrative review evaluates the role of diet in the relationship between depression and Alzheimer's disease (AD). RECENT FINDINGS AD and depression are often comorbid, and depression appears to independently increase the future risk of AD. Evidence suggests diet influences the risk of both conditions directly and indirectly. Diet impacts neurochemical and biological processes that may affect the development and progression of depression and cognitive dysfunction. The dietary components offering the greatest protection against depression and AD are yet to be determined. Current evidence highlights the importance of polyphenolic compounds, folate, B vitamins, and polyunsaturated fatty acids, along with adherence to dietary patterns like the Mediterranean diet, which includes multiple beneficial dietary factors. SUMMARY The investigation of dietary factors in the prevention of depression and AD is a comparatively young field of research. Comprehensive highly characterised longitudinal datasets and advanced analytical approaches are required to further examine the complex relationship between diet, depression, and AD. There is a critical need for more research in this area to develop effective preventive strategies aimed at maintaining mental and physical health with advancing age.
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Affiliation(s)
- Hilal Salim Said Al Shamsi
- Centre of Excellence for Alzheimer's Disease Research and Care, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, 6027, Australia
| | - Stephanie R Rainey-Smith
- Centre of Excellence for Alzheimer's Disease Research and Care, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, 6027, Australia
- Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Murdoch, Western Australia, 6150, Australia
- Alzheimer's Research Australia, Ralph and Patricia Sarich Neuroscience Research Institute, Nedlands, Western Australia, 6009, Australia
- Lifestyle Approaches Towards Cognitive Health Research Group, Murdoch University, Murdoch, Western Australia, 6150, Australia
- School of Psychological Science, University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Samantha L Gardener
- Centre of Excellence for Alzheimer's Disease Research and Care, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, 6027, Australia
- Alzheimer's Research Australia, Ralph and Patricia Sarich Neuroscience Research Institute, Nedlands, Western Australia, 6009, Australia
- Lifestyle Approaches Towards Cognitive Health Research Group, Murdoch University, Murdoch, Western Australia, 6150, Australia
| | - Hamid R Sohrabi
- Centre of Excellence for Alzheimer's Disease Research and Care, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, 6027, Australia
- Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Murdoch, Western Australia, 6150, Australia
- Alzheimer's Research Australia, Ralph and Patricia Sarich Neuroscience Research Institute, Nedlands, Western Australia, 6009, Australia
- Department of Biomedical Sciences, Macquarie University, Macquarie Park, New South Wales, 2109, Australia
| | - Rodrigo Canovas
- Health & Biosecurity, The Commonwealth Scientific and Industrial Research Organisation, Herston, Queensland, 4029, Australia
| | - Ralph N Martins
- Centre of Excellence for Alzheimer's Disease Research and Care, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, 6027, Australia
- Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Murdoch, Western Australia, 6150, Australia
- Alzheimer's Research Australia, Ralph and Patricia Sarich Neuroscience Research Institute, Nedlands, Western Australia, 6009, Australia
- Department of Biomedical Sciences, Macquarie University, Macquarie Park, New South Wales, 2109, Australia
| | - Warnakulasuriya Mary Ann Dipika Binosha Fernando
- Centre of Excellence for Alzheimer's Disease Research and Care, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, 6027, Australia
- Alzheimer's Research Australia, Ralph and Patricia Sarich Neuroscience Research Institute, Nedlands, Western Australia, 6009, Australia
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3
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Liang Y, Liu C, Cheng M, Geng L, Li J, Du W, Song M, Chen N, Yeleen TAN, Song L, Wang X, Han Y, Sheng C. The link between gut microbiome and Alzheimer's disease: From the perspective of new revised criteria for diagnosis and staging of Alzheimer's disease. Alzheimers Dement 2024. [PMID: 38940631 DOI: 10.1002/alz.14057] [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: 04/15/2024] [Revised: 05/20/2024] [Accepted: 05/22/2024] [Indexed: 06/29/2024]
Abstract
Over the past decades, accumulating evidence suggests that the gut microbiome exerts a key role in Alzheimer's disease (AD). The Alzheimer's Association Workgroup is updating the diagnostic criteria for AD, which changed the profiles and categorization of biomarkers from "AT(N)" to "ATNIVS." Previously, most of studies focus on the correlation between the gut microbiome and amyloid beta deposition ("A"), the initial AD pathological feature triggering the "downstream" tauopathy and neurodegeneration. However, limited research investigated the interactions between the gut microbiome and other AD pathogenesis ("TNIVS"). In this review, we summarize current findings of the gut microbial characteristics in the whole spectrum of AD. Then, we describe the association of the gut microbiome with updated biomarker categories of AD pathogenesis. In addition, we outline the gut microbiome-related therapeutic strategies for AD. Finally, we discuss current key issues of the gut microbiome research in the AD field and future research directions. HIGHLIGHTS: The new revised criteria for Alzheimer's disease (AD) proposed by the Alzheimer's Association Workgroup have updated the profiles and categorization of biomarkers from "AT(N)" to "ATNIVS." The associations of the gut microbiome with updated biomarker categories of AD pathogenesis are described. Current findings of the gut microbial characteristics in the whole spectrum of AD are summarized. Therapeutic strategies for AD based on the gut microbiome are proposed.
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Affiliation(s)
- Yuan Liang
- Department of Neurology, The Affiliated Hospital of Jining Medical University, Jining, China
| | - Congcong Liu
- Department of Neurology, The Affiliated Hospital of Jining Medical University, Jining, China
| | - Manman Cheng
- Department of Respiratory Medicine, The Affiliated Hospital of Jining Medical University, Jining, China
| | - Lijie Geng
- Department of Radiology, The People's Hospital of Yanzhou, Jining, China
| | - Jing Li
- Department of Emergency, The Affiliated Hospital of Jining Medical University, Jining, China
| | - Wenying Du
- Department of Neurology, China-Japan Friendship Hospital, Beijing, China
| | - Minfang Song
- Department of Neurology, The Affiliated Hospital of Jining Medical University, Jining, China
| | - Nian Chen
- Department of Neurology, The Affiliated Hospital of Jining Medical University, Jining, China
| | | | - Li Song
- Department of Neurology, The Affiliated Hospital of Jining Medical University, Jining, China
| | - Xiaoni Wang
- Department of Neurology, Sir Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Ying Han
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou, China
- Center of Alzheimer's Disease, Beijing Institute for Brain Disorders, Beijing, China
- National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Can Sheng
- Department of Neurology, The Affiliated Hospital of Jining Medical University, Jining, China
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Londoño-Osorio S, Leon-Carreño L, Cala MP, Sierra-Zapata L. The gut metabolome in a cohort of pregnant and lactating women from Antioquia-Colombia. Front Mol Biosci 2024; 11:1250413. [PMID: 38803424 PMCID: PMC11128665 DOI: 10.3389/fmolb.2024.1250413] [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: 06/30/2023] [Accepted: 02/20/2024] [Indexed: 05/29/2024] Open
Abstract
Nutrition during the perinatal period is an essential component of health and one that can severely impact the correct development of a human being and its overall condition, in all the subsequent stages of life. The availability of several compounds, mainly macronutrients and micronutrients, plays a key role in the balanced nutrition of both mother and baby and is a process with direct relation to the gut microbiome. Thus, we hereby refer to the set of small molecules derived from gut microbiome metabolism as the gut metabolome. These continuous processes occurring in the gut of a gestating or lactating mother related to microbial communities and nutrients, can be revealed by metabolomics. In this study, we explore for the first time the gut metabolome of pregnant and lactating women, from our region of Antioquia-Colombia, applying untargeted metabolomics by LC-QTOF-MS, and molecular networking. Regarding the gut metabolome composition of the cohort, we found, key metabolites that can be used as biomarkers of microbiome function, overall metabolic health, dietary intake, pharmacology, and lifestyle. In our cohort, pregnant women evidenced a significantly higher abundance of prostaglandins, alkaloids, corticosteroids, organosilicons, and natural toxins, while in lactating women, lipids stand out. Our results suggest that unveiling the metabolic phenotype of the gut microbiome of an individual, by untargeted metabolomics, allows a broad visualization of the chemical space present in this important niche and enables the recognition of influential indicators of the host's health status and habits, especially of women during this significant perinatal period. This study constitutes the first evidence of the use of untargeted LC-QTOF-MS coupled with molecular networking analysis, of the gut microbiome in a Colombian cohort and establishes a methodology for finding relative abundances of key metabolites, with potential use in nutritional and physiological state assessments, for future personalized health and nutrition practices.
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Affiliation(s)
- Sara Londoño-Osorio
- CIBIOP Research Group, School of Applied Sciences and Engineering, Universidad EAFIT, Medellín, Colombia
| | - Lizeth Leon-Carreño
- MetCore–Metabolomics Core Facility, Vice-Presidency for Research, Universidad de Los Andes, Bogotá, Colombia
| | - Mónica P. Cala
- MetCore–Metabolomics Core Facility, Vice-Presidency for Research, Universidad de Los Andes, Bogotá, Colombia
| | - Laura Sierra-Zapata
- CIBIOP Research Group, School of Applied Sciences and Engineering, Universidad EAFIT, Medellín, Colombia
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5
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Peddinti V, Avaghade MM, Suthar SU, Rout B, Gomte SS, Agnihotri TG, Jain A. Gut instincts: Unveiling the connection between gut microbiota and Alzheimer's disease. Clin Nutr ESPEN 2024; 60:266-280. [PMID: 38479921 DOI: 10.1016/j.clnesp.2024.02.019] [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: 02/06/2024] [Accepted: 02/16/2024] [Indexed: 04/13/2024]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder marked by neuroinflammation and gradual cognitive decline. Recent research has revealed that the gut microbiota (GM) plays an important role in the pathogenesis of AD through the microbiota-gut-brain axis. However, the mechanism by which GM and microbial metabolites alter brain function is not clearly understood. GM dysbiosis increases the permeability of the intestine, alters the blood-brain barrier permeability, and elevates proinflammatory mediators causing neurodegeneration. This review article introduced us to the composition and functions of GM along with its repercussions of dysbiosis in relation to AD. We also discussed the importance of the gut-brain axis and its role in communication. Later we focused on the mechanism behind gut dysbiosis and the progression of AD including neuroinflammation, oxidative stress, and changes in neurotransmitter levels. Furthermore, we highlighted recent developments in AD management, such as microbiota-based therapy, dietary interventions like prebiotics, probiotics, and fecal microbiota transplantation. Finally, we concluded with challenges and future directions in AD research based on GM.
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Affiliation(s)
- Vasu Peddinti
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Palaj, Gandhinagar, 382355, Gujarat, India
| | - Manoj Mohan Avaghade
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Palaj, Gandhinagar, 382355, Gujarat, India
| | - Sunil Umedmal Suthar
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Palaj, Gandhinagar, 382355, Gujarat, India
| | - Biswajit Rout
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Palaj, Gandhinagar, 382355, Gujarat, India
| | - Shyam Sudhakar Gomte
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Palaj, Gandhinagar, 382355, Gujarat, India
| | - Tejas Girish Agnihotri
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Palaj, Gandhinagar, 382355, Gujarat, India
| | - Aakanchha Jain
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Palaj, Gandhinagar, 382355, Gujarat, India.
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6
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Liu X, Liu Y, Liu J, Zhang H, Shan C, Guo Y, Gong X, Cui M, Li X, Tang M. Correlation between the gut microbiome and neurodegenerative diseases: a review of metagenomics evidence. Neural Regen Res 2024; 19:833-845. [PMID: 37843219 PMCID: PMC10664138 DOI: 10.4103/1673-5374.382223] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/19/2023] [Accepted: 06/17/2023] [Indexed: 10/17/2023] Open
Abstract
A growing body of evidence suggests that the gut microbiota contributes to the development of neurodegenerative diseases via the microbiota-gut-brain axis. As a contributing factor, microbiota dysbiosis always occurs in pathological changes of neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis. High-throughput sequencing technology has helped to reveal that the bidirectional communication between the central nervous system and the enteric nervous system is facilitated by the microbiota's diverse microorganisms, and for both neuroimmune and neuroendocrine systems. Here, we summarize the bioinformatics analysis and wet-biology validation for the gut metagenomics in neurodegenerative diseases, with an emphasis on multi-omics studies and the gut virome. The pathogen-associated signaling biomarkers for identifying brain disorders and potential therapeutic targets are also elucidated. Finally, we discuss the role of diet, prebiotics, probiotics, postbiotics and exercise interventions in remodeling the microbiome and reducing the symptoms of neurodegenerative diseases.
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Affiliation(s)
- Xiaoyan Liu
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Yi Liu
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu Province, China
- Institute of Animal Husbandry, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu Province, China
| | - Junlin Liu
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Hantao Zhang
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Chaofan Shan
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Yinglu Guo
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Xun Gong
- Department of Rheumatology & Immunology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Mengmeng Cui
- Department of Neurology, The Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong Province, China
| | - Xiubin Li
- Department of Neurology, The Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong Province, China
| | - Min Tang
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu Province, China
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7
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Dissanayaka DMS, Jayasena V, Rainey-Smith SR, Martins RN, Fernando WMADB. The Role of Diet and Gut Microbiota in Alzheimer's Disease. Nutrients 2024; 16:412. [PMID: 38337696 PMCID: PMC10857293 DOI: 10.3390/nu16030412] [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: 12/30/2023] [Revised: 01/22/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
Alzheimer's disease (AD), the most prevalent form of dementia, is characterized by the accumulation of amyloid-beta (Aβ) plaques and hyperphosphorylated tau tangles. Currently, Alzheimer's disease (AD) impacts 50 million individuals, with projections anticipating an increase to 152 million by the year 2050. Despite the increasing global prevalence of AD, its underlying pathology remains poorly understood, posing challenges for early diagnosis and treatment. Recent research suggests a link between gut dysbiosis and the aggregation of Aβ, the development of tau proteins, and the occurrence of neuroinflammation and oxidative stress are associated with AD. However, investigations into the gut-brain axis (GBA) in the context of AD progression and pathology have yielded inconsistent findings. This review aims to enhance our understanding of microbial diversity at the species level and the role of these species in AD pathology. Additionally, this review addresses the influence of confounding elements, including diet, probiotics, and prebiotics, on AD throughout different stages (preclinical, mild cognitive impairment (MCI), and AD) of its progression.
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Affiliation(s)
- D. M. Sithara Dissanayaka
- Centre of Excellence for Alzheimer’s Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA 6027, Australia; (D.M.S.D.); (S.R.R.-S.); (R.N.M.)
- Alzheimer’s Research Australia, Ralph and Patricia Sarich Neuroscience Research Institute, Nedlands, WA 6009, Australia
| | - Vijay Jayasena
- School of Science and Health, Western Sydney University, M15, Rm. G54, Locked Bag 1797, Penrith, NSW 2751, Australia;
| | - Stephanie R. Rainey-Smith
- Centre of Excellence for Alzheimer’s Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA 6027, Australia; (D.M.S.D.); (S.R.R.-S.); (R.N.M.)
- Alzheimer’s Research Australia, Ralph and Patricia Sarich Neuroscience Research Institute, Nedlands, WA 6009, Australia
- Centre for Healthy Aging, Murdoch University, Murdoch, WA 6150, Australia
| | - Ralph N. Martins
- Centre of Excellence for Alzheimer’s Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA 6027, Australia; (D.M.S.D.); (S.R.R.-S.); (R.N.M.)
- Alzheimer’s Research Australia, Ralph and Patricia Sarich Neuroscience Research Institute, Nedlands, WA 6009, Australia
- Department of Biomedical Sciences, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - W. M. A. D. Binosha Fernando
- Centre of Excellence for Alzheimer’s Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA 6027, Australia; (D.M.S.D.); (S.R.R.-S.); (R.N.M.)
- Alzheimer’s Research Australia, Ralph and Patricia Sarich Neuroscience Research Institute, Nedlands, WA 6009, Australia
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8
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Bello-Corral L, Alves-Gomes L, Fernández-Fernández JA, Fernández-García D, Casado-Verdejo I, Sánchez-Valdeón L. Implications of gut and oral microbiota in neuroinflammatory responses in Alzheimer's disease. Life Sci 2023; 333:122132. [PMID: 37793482 DOI: 10.1016/j.lfs.2023.122132] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 10/06/2023]
Abstract
A diverse and stable microbiota promotes a healthy state, nevertheless, an imbalance in gut or oral bacterial composition, called dysbiosis, can cause gastrointestinal disorders, systemic inflammatory states and oxidative stress, among others. Recently, gut and oral dysbiosis has been linked to Alzheimer's disease (AD), which is considered the most common form of dementia and a public health priority due to its high prevalence and incidence. The aim of this review is to highlight the implications of gut and oral microbiota in the neuroinflammation characteristic of AD pathology and the subsequent cognitive impairment. It is a systematic review of the current literature obtained by searching the PubMed, Web of Science and Scopus databases. The characteristic intestinal dysbiosis in AD patients leads to increased permeability of the intestinal barrier and activates immune cells in the central nervous system due to translocation of microbiota-derived metabolites and/or bacteria into the circulation leading to increased neuroinflammation and neuronal loss, thus generating the cognitive impairment characteristic of AD. The presence in the central nervous system of Porphyromonas gingivalis can cause an increased neuroinflammation and beta-amyloid peptide accumulation.
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Affiliation(s)
- Laura Bello-Corral
- Health Research Nursing Group (GREIS), University of Leon, 24071, Leon, Spain; Department of Nursing and Physiotherapy, University of Leon, 24071, Leon, Spain
| | | | - Jesús Antonio Fernández-Fernández
- Health Research Nursing Group (GREIS), University of Leon, 24071, Leon, Spain; Department of Nursing and Physiotherapy, University of Leon, 24071, Leon, Spain
| | - Daniel Fernández-García
- Health Research Nursing Group (GREIS), University of Leon, 24071, Leon, Spain; Department of Nursing and Physiotherapy, University of Leon, 24071, Leon, Spain
| | - Inés Casado-Verdejo
- Health Research Nursing Group (GREIS), University of Leon, 24071, Leon, Spain; Department of Nursing and Physiotherapy, University of Leon, 24401, Ponferrada, Spain
| | - Leticia Sánchez-Valdeón
- Health Research Nursing Group (GREIS), University of Leon, 24071, Leon, Spain; Department of Nursing and Physiotherapy, University of Leon, 24071, Leon, Spain.
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9
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Widjaja F, Rietjens IMCM. From-Toilet-to-Freezer: A Review on Requirements for an Automatic Protocol to Collect and Store Human Fecal Samples for Research Purposes. Biomedicines 2023; 11:2658. [PMID: 37893032 PMCID: PMC10603957 DOI: 10.3390/biomedicines11102658] [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: 09/04/2023] [Revised: 09/22/2023] [Accepted: 09/24/2023] [Indexed: 10/29/2023] Open
Abstract
The composition, viability and metabolic functionality of intestinal microbiota play an important role in human health and disease. Studies on intestinal microbiota are often based on fecal samples, because these can be sampled in a non-invasive way, although procedures for sampling, processing and storage vary. This review presents factors to consider when developing an automated protocol for sampling, processing and storing fecal samples: donor inclusion criteria, urine-feces separation in smart toilets, homogenization, aliquoting, usage or type of buffer to dissolve and store fecal material, temperature and time for processing and storage and quality control. The lack of standardization and low-throughput of state-of-the-art fecal collection procedures promote a more automated protocol. Based on this review, an automated protocol is proposed. Fecal samples should be collected and immediately processed under anaerobic conditions at either room temperature (RT) for a maximum of 4 h or at 4 °C for no more than 24 h. Upon homogenization, preferably in the absence of added solvent to allow addition of a buffer of choice at a later stage, aliquots obtained should be stored at either -20 °C for up to a few months or -80 °C for a longer period-up to 2 years. Protocols for quality control should characterize microbial composition and viability as well as metabolic functionality.
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Affiliation(s)
- Frances Widjaja
- Division of Toxicology, Wageningen University & Research, 6708 WE Wageningen, The Netherlands;
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10
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Yang Q, Lyu S, Xu M, Li S, Du Z, Liu X, Shang X, Yu Z, Liu J, Zhang T. Potential Benefits of Egg White Proteins and Their Derived Peptides in the Regulation of the Intestinal Barrier and Gut Microbiota: A Comprehensive Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:13168-13180. [PMID: 37639307 DOI: 10.1021/acs.jafc.3c03230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
Impaired intestinal barrier function can impede the digestion and absorption of nutrients and cause a range of metabolic disorders, which are the main causes of intestinal disease. Evidence suggests that proper dietary protein intake can prevent and alleviate intestinal diseases. Egg white protein (EWP) has received considerable attention, because of its high protein digestibility and rich amino acid composition. Furthermore, bioactive peptides may have an increased repair effect due to their high degradation efficiency in the gut. In this study, we aimed to review the effects of EWP and its bioactive peptides on intestinal structural repair. The potential modulation mechanisms by which EWP and their peptides regulate the gut microbiota and intestinal barrier can be summarized as follows: (1) restoring the structure of the intestinal barrier to its intact form, (2) enhancing the intestinal immune system and alleviating the inflammatory response and oxidative damage, and (3) increasing the relative abundance of beneficial bacteria and metabolites. Further in-depth analysis of the coregulation of multiple signaling pathways by EWP is required, and the combined effects of these multiple mechanisms requires further evaluation in experimental models. Human trials can be considered to understand new directions for development.
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Affiliation(s)
- Qi Yang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Siwen Lyu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Menglei Xu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Shengrao Li
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Zhiyang Du
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Xuanting Liu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Xiaomin Shang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Zhipeng Yu
- School of Food Science and Engineering, Hainan University, 570228 Haikou, China
| | - Jingbo Liu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Ting Zhang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
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11
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Wang J, Yu Z, Peng Y, Xu B. Insights into prevention mechanisms of bioactive components from healthy diets against Alzheimer's disease. J Nutr Biochem 2023:109397. [PMID: 37301484 DOI: 10.1016/j.jnutbio.2023.109397] [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: 12/26/2022] [Revised: 05/01/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease in which senile plaques, neurofibrillary tangles, insulin resistance, oxidative stress, chronic neuroinflammation, and abnormal neurotransmission are the potential mechanisms involved in its onset and development. Although it is still an intractable disorder, diet intervention has been developed as an innovative strategy for AD prevention. Some bioactive compounds and micronutrients from food, including soy isoflavones, rutin, vitamin B1, etc., have exhibited numerous neuronal health-promoting effects in both in vivo and in vitro studies. It is well known that their antiapoptotic, antioxidative, and anti-inflammatory properties prevent the neuronal or glial cells from injury or death, minimize oxidative damage, inhibit the production of proinflammatory cytokines by modulating typical signaling pathways of MAPK, NF-kβ, and TLR, and further reduce Aβ genesis and tau hyperphosphorylation. However, parts of the dietary components trigger AD-related proteins productions and inflammasome as well as inflammatory gene upregulation. This review summarized the neuroprotective or nerve damage-promoting role and underlying molecular mechanisms of flavonoids, vitamins, and fatty acids via the data from library databases, PubMed, and journal websites, which provides a comprehensive analysis of the prevention potential of these dietary components against AD.
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Affiliation(s)
- Jingwen Wang
- Food Science and Technology Program, Department of Life Sciences, BNU-HKBU United International College, Zhuhai, Guangdong 519087, China
| | - Zhiling Yu
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Ye Peng
- Faculty of Medicine, Macau University of Science and Technology, Taipa, Macao SAR, China
| | - Baojun Xu
- Food Science and Technology Program, Department of Life Sciences, BNU-HKBU United International College, Zhuhai, Guangdong 519087, China.
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12
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Sun Y, Ho CT, Zhang X. Neuroprotection of Food Bioactives in Neurodegenerative Diseases: Role of the Gut Microbiota and Innate Immune Receptors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:2718-2733. [PMID: 36700657 DOI: 10.1021/acs.jafc.2c07742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Gut-brain connections may be mediated by an assortment of microbial molecules, which can subsequently traverse intestinal and blood-brain barriers and impact neurological function. Pattern recognition receptors (PRRs) are important innate immune proteins in the gut. Gut microbiota act in concert with the PRRs is a novel target for regulating host-microbe signaling and immune homeostasis, which may involve the pathogenesis of neurodegenerative diseases. Natural food bioactives bestow a protective advantage on neurodegenerative diseases through immunomodulatory effects of the modified gut microbiota or alterations in the landscape of microbiota-produced metabolites via PRRs modulation. In this review, we discuss the effect of natural food bioactives on the gut microbiota and the role of PRRs in the gut-brain crosstalk. We focused on the neuroprotective mechanisms of natural bioactive compounds behind the action of the gut microbiota and PRRs. Research advances in natural food bioactives as antineurodegeneration agents were also presented.
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Affiliation(s)
- Ying Sun
- Department of Food Science and Engineering, Ningbo University, Ningbo 315211, P.R. China
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University, New Brunswick, New Jersey 08901, United States
| | - Xin Zhang
- Department of Food Science and Engineering, Ningbo University, Ningbo 315211, P.R. China
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, P.R. China
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13
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Tang Y, Zhang D, Chang Y, Zheng J. Atrial Natriuretic Peptide Associated with Cardiovascular Diseases Inhibits Amyloid-β Aggregation via Cross-Seeding. ACS Chem Neurosci 2023; 14:312-322. [PMID: 36577130 DOI: 10.1021/acschemneuro.2c00712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Both cardiovascular diseases (CVDs) and Alzheimer's disease (AD) share some common risk factors (e.g., age, obesity, oxidative stress, inflammation, hypertension) that contribute to their overlapping pathogenesis, indicating a "head-to-heart" pathological connection between CVDs and AD. To explore this potential connection at the protein level, we study the potential cross-seeding (heterotypic interactions) between CVD-associated atrial natriuretic peptide (ANP) and AD-associated β-amyloid (Aβ). Collective aggregation and cell assays demonstrate the cross-seeding of ANP with different Aβ species including monomers, oligomers, and fibrils with high binding affinity (KD = 1.234-1.797 μM) in a dose-dependent manner. Such ANP-induced cross-seeding also modifies the Aβ aggregation pathway, fibril morphology, and cell deposition pattern by inhibiting Aβ fibrillization from small aggregates, disassembling preformed Aβ fibrils, and alleviating Aβ-associated cytotoxicity. Finally, using transgenic C. elegans worms that express the human muscle-specific Aβ1-42, ANP can also effectively delay Aβ-induced worm paralysis, decrease Aβ plaques in worm brains, and reduce reactive oxygen species (ROS) production, confirming its in vivo inhibition ability to prevent neurodevelopmental toxicity in worms. This work discovers not only a new cross-seeding system between the two disease-related proteins but also a new finding that ANP possesses a new biological function as an Aβ inhibitor in the nonaggregated state.
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Affiliation(s)
- Yijing Tang
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Dong Zhang
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Yung Chang
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Taoyuan 32023, Taiwan
| | - Jie Zheng
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, Ohio 44325, United States
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14
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Zhang W, Guo Y, Cheng Y, Yao W, Qian H. Neuroprotective effects of polysaccharide from Sparassis crispa on Alzheimer's disease-like mice: Involvement of microbiota-gut-brain axis. Int J Biol Macromol 2023; 225:974-986. [PMID: 36402384 DOI: 10.1016/j.ijbiomac.2022.11.160] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 11/18/2022]
Abstract
Alzheimer's disease (AD) is an irreversible neurodegenerative disease that may cause neurotoxicity and imbalance in gut microbiota. A polysaccharide derived from Sparassis crispa-1 (SCP-1) acts as a neuroprotective agent in vitro. There is, however, no clarity on the mechanism responsible for SCP-1's neuroprotective effects against AD. In this study, C57BL/6J male mice were treated with D-galactose and AlCl3 to establish an animal model of AD, followed by treatment with SCP-1. As evidenced by behavioral tests and brain pathology, SCP-1 treatment ameliorated learning deficits and defective spatial recognition, reduced amyloidogenesis, and modulated the neurotransmitter levels (γ-aminobutyric acid, glutamate, and acetylcholine) in the brain of AD mice. The results of 16S rRNA sequencing revealed that SCP-1 reshaped the gut microbiota composition, especially by promoting the proliferation of butyrate-producing genera, such as Intestinaimonas, [Eubacterium] ventriosum group, Lachnospiraceae_UCG_010, and Lachnospiraceae_UCG_001, and suppressing the growth of inflammation-related bacteria (i.e., Escherichia/Shigella). Furthermore, SCP-1 significantly attenuated inflammation by reducing the levels of inflammatory cytokines, maintaining intestinal barrier function, inhibiting glial activation, and decreasing the expression of toll-like receptor 4 (TLR4) and nuclear factor-κB (NF-κB). Collectively, our findings suggest that SCP-1 may prevent the development of AD via modulation of gut microbiota and suppression of inflammation, for a potential application in preventing or managing AD.
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Affiliation(s)
- Wenyi Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China
| | - Yahui Guo
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China
| | - Yuliang Cheng
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China
| | - Weirong Yao
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China
| | - He Qian
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China.
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15
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Liang S, Wang L, Wu X, Hu X, Wang T, Jin F. The different trends in the burden of neurological and mental disorders following dietary transition in China, the USA, and the world: An extension analysis for the Global Burden of Disease Study 2019. Front Nutr 2023; 9:957688. [PMID: 36698474 PMCID: PMC9869872 DOI: 10.3389/fnut.2022.957688] [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: 05/31/2022] [Accepted: 12/06/2022] [Indexed: 01/12/2023] Open
Abstract
Introduction The highly processed western diet is substituting the low-processed traditional diet in the last decades globally. Increasing research found that a diet with poor quality such as western diet disrupts gut microbiota and increases the susceptibility to various neurological and mental disorders, while a balanced diet regulates gut microbiota and prevents and alleviates the neurological and mental disorders. Yet, there is limited research on the association between the disease burden expanding of neurological and mental disorders with a dietary transition. Methods We compared the disability-adjusted life-years (DALYs) trend by age for neurological and mental disorders in China, in the United States of America (USA), and across the world from 1990 to 2019, evaluated the dietary transition in the past 60 years, and analyzed the association between the burden trend of the two disorders with the changes in diet composition and food production. Results We identified an age-related upward pattern in disease burden in China. Compared with the USA and the world, the Chinese neurological and mental disorders DALY percent was least in the generation over 75 but rapidly increased in younger generations and surpassed the USA and/or the world in the last decades. The age-related upward pattern in Chinese disease burdens had not only shown in the presence of cardiovascular diseases, neoplasms, and diabetes mellitus but also appeared in the presence of depressive disorders, Parkinson's disease, Alzheimer's disease and other dementias, schizophrenia, headache disorders, anxiety disorders, conduct disorders, autism spectrum disorders, and eating disorders, successively. Additionally, the upward trend was associated with the dramatic dietary transition including a reduction in dietary quality and food production sustainability, during which the younger generation is more affected than the older. Following the increase in total calorie intake, alcohol intake, ratios of animal to vegetal foods, and poultry meat to pulses, the burdens of the above diseases continuously rose. Then, following the rise of the ratios of meat to pulses, eggs to pulses, and pork to pulses, the usage of fertilizers, the farming density of pigs, and the burdens of the above disease except diabetes mellitus were also ever-increasing. Even the usage of pesticides was positively correlated with the burdens of Parkinson's disease, schizophrenia, cardiovascular diseases, and neoplasms. Contrary to China, the corresponding burdens of the USA trended to reduce with the improvements in diet quality and food production sustainability. Discussion Our results suggest that improving diet quality and food production sustainability might be a promising way to stop the expanding burdens of neurological and mental disorders.
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Affiliation(s)
- Shan Liang
- Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China,Key Laboratory of Microbial Physiological and Metabolic Engineering, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China,Gut-brain Psychology Laboratory, Beijing, China,*Correspondence: Shan Liang,
| | - Li Wang
- Department for the History of Science and Scientific Archaeology, University of Science and Technology of China, Hefei, Anhui, China
| | - Xiaoli Wu
- Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China,Gut-brain Psychology Laboratory, Beijing, China
| | - Xu Hu
- Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China,Gut-brain Psychology Laboratory, Beijing, China
| | - Tao Wang
- Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China,Gut-brain Psychology Laboratory, Beijing, China
| | - Feng Jin
- Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China,Gut-brain Psychology Laboratory, Beijing, China,Feng Jin,
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16
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Huang L, Lu Z, Zhang H, Wen H, Li Z, Liu Q, Wang R. A Novel Strategy for Alzheimer's Disease Based on the Regulatory Effect of Amyloid-β on Gut Flora. J Alzheimers Dis 2023; 94:S227-S239. [PMID: 36336932 PMCID: PMC10473151 DOI: 10.3233/jad-220651] [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] [Accepted: 09/19/2022] [Indexed: 06/16/2023]
Abstract
Alzheimer's disease (AD) is one of the most common neurodegenerative diseases worldwide. The accumulation of amyloid-β (Aβ) protein and plaque formation in the brain are two major causes of AD. Interestingly, growing evidence demonstrates that the gut flora can alleviate AD by affecting amyloid production and metabolism. However, the underlying mechanism remains largely unknown. This review will discuss the possible association between the gut flora and Aβ in an attempt to provide novel therapeutic directions for AD treatment based on the regulatory effect of Aβ on the gut flora.
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Affiliation(s)
- Li Huang
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Zhaogang Lu
- Department of Pharmacy, People’s Hospital of Ningxia /First Affiliated Hospital of Northwest University for Nationalities, Yinchuan, China
| | - Hexin Zhang
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Hongyong Wen
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Zongji Li
- Laboratory Department, Clinical College of Ningxia Medical University, Yinchuan, China
| | - Qibing Liu
- Department of Pharmacology, Hainan Medical University, Haikou, China
| | - Rui Wang
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
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17
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Bou Zerdan M, Hebbo E, Hijazi A, El Gemayel M, Nasr J, Nasr D, Yaghi M, Bouferraa Y, Nagarajan A. The Gut Microbiome and Alzheimer's Disease: A Growing Relationship. Curr Alzheimer Res 2022; 19:CAR-EPUB-128458. [PMID: 36578263 DOI: 10.2174/1567205020666221227090125] [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: 07/26/2022] [Revised: 10/03/2022] [Accepted: 10/19/2022] [Indexed: 12/30/2022]
Abstract
Evidence that the gut microbiota plays a key role in the pathogenesis of Alzheimer's disease is already un-ravelling. The microbiota-gut-brain axis is a bidirectional communication system that is not fully understood but includes neural, immune, endocrine, and metabolic pathways. The progression of Alzheimer's disease is supported by mechanisms related to the imbalance in the gut microbiota and the development of amyloid plaques in the brain, which are at the origin of Alzheimer's disease. Alterations in the composition of the gut microbiome led to dysregulation in the pathways governing this system. This leads to neurodegeneration through neuroinflammation and neurotransmitter dysregulation. Neurodegeneration and disruption of the blood-brain barrier are frontiers at the origin of Alzheimer's disease. Furthermore, bacteria populating the gut microbiota can secrete large amounts of amyloid proteins and lipopolysaccharides, which modulate signaling pathways and alter the production of proinflammatory cytokines associated with the pathogenesis of Alz-heimer's disease. Importantly, through molecular mimicry, bacterial amyloids may elicit cross-seeding of misfolding and induce microglial priming at different levels of the brain-gut-microbiota axis. The potential mechanisms of amyloid spreading include neuron-to-neuron or distal neuron spreading, direct blood-brain barrier crossing, or via other cells such as astrocytes, fibroblasts, microglia, and immune system cells. Gut microbiota metabolites, including short-chain fatty acids, pro-inflammatory factors, and neurotransmitters may also affect AD pathogenesis and associated cognitive decline. The purpose of this review is to summarize and discuss the current findings that may elucidate the role of gut microbiota in the development of Alzheimer's disease. Understanding the underlying mechanisms may provide new insights into novel therapeutic strategies for Alzheimer's disease, such as probiotics and targeted oligosaccharides.
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Affiliation(s)
- Maroun Bou Zerdan
- Department of Internal Medicine, SUNY Upstate Medical University, New York, USA
- Department of Hematology and Oncology, Cleveland Clinic Florida, Weston, Florida, USA
| | - Elsa Hebbo
- Faculty of Medicine, American University of Beirut, Beirut 2020, Lebanon
| | - Ali Hijazi
- Faculty of Medicine, American University of Beirut, Beirut 2020, Lebanon
| | - Maria El Gemayel
- Department of Gastroenterology and Hepatology, Hotel-Dieu de France Hospital, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - Janane Nasr
- Saint George Hospital, Faculty of Medicine, University of Balamand, Beirut 1100, Lebanon
| | - Dayana Nasr
- Department of Internal Medicine, SUNY Upstate Medical University, New York, USA
| | - Marita Yaghi
- Department of Hematology and Oncology, Cleveland Clinic Florida, Weston, Florida, USA
| | - Youssef Bouferraa
- Department of Internal Medicine, Cleveland Clinic, Cleveland, OH, 44195, USA
| | - Arun Nagarajan
- Department of Internal Medicine, Cleveland Clinic, Cleveland, OH, 44195, USA
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18
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Qiu-Yue X, Tian-Yuan Y, Xiao-Long W, Dong-Mei Q, Xiao-Rui C. Effects of metformin on modulating the expression of brain-related genes of APP/PS1 transgenic mice based on Single Cell Sequencing. Curr Alzheimer Res 2022; 19:CAR-EPUB-127961. [PMID: 36464874 DOI: 10.2174/1567205020666221201143323] [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: 08/02/2022] [Revised: 10/26/2022] [Accepted: 11/12/2022] [Indexed: 12/07/2022]
Abstract
BACKGROUND Alzheimer's disease is the most common form of dementia, affecting millions of people worldwide. METHODS Here, we analyzed the effects of metformin on APP/PS1 transgenic mice by behavioral test and single-cell sequencing. Results showed that metformin can improve the spatial learning, memory function, and anxiety mood of APP/PS1 transgenic mice. We identified transcriptionally distinct subpopulations of nine major brain cell types. Metformin increased the differentiation of stem cells, decreased the proportion of cells in the G2 phase, enhanced the generation of neural stem cells and oligodendrocyte progenitor cells, and the tendency of neural stem cells to differentiate into astrocytes. Notably, 253 genes expressed abnormally in APP/PS1 transgenic mice and were reversed by metformin. Ttr, Uba52, and Rps21 are the top 3 genes in the cell-gene network with the highest node degree. Moreover, histochemistry showed the expressions of RPS15, UBA52, and RPL23a were consistent with the data from single-cell sequencing. Pathway and biological process enrichment analysis indicated metformin was involved in nervous system development and negative regulation of the apoptotic process. CONCLUSION Overall, metformin might play an important role in the differentiation and development and apoptotic process of the central nervous system by regulating the expression of Ttr, Uba52, Rps21, and other genes to improve cognition of APP/PS1 transgenic mice. These results provided a clue for elaborating on the molecular and cellular basis of metformin on AD.
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Affiliation(s)
- Xiao Qiu-Yue
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Ye Tian-Yuan
- Innovative Institute of Chinese Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Wang Xiao-Long
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Qi Dong-Mei
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Cheng Xiao-Rui
- Innovative Institute of Chinese Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
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19
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Wei W, Wang S, Xu C, Zhou X, Lian X, He L, Li K. Gut microbiota, pathogenic proteins and neurodegenerative diseases. Front Microbiol 2022; 13:959856. [PMID: 36466655 PMCID: PMC9715766 DOI: 10.3389/fmicb.2022.959856] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 10/07/2022] [Indexed: 12/20/2023] Open
Abstract
As the world's population ages, neurodegenerative diseases (NDs) have brought a great burden to the world. However, effective treatment measures have not been found to alleviate the occurrence and development of NDs. Abnormal accumulation of pathogenic proteins is an important cause of NDs. Therefore, effective inhibition of the accumulation of pathogenic proteins has become a priority. As the second brain of human, the gut plays an important role in regulate emotion and cognition functions. Recent studies have reported that the disturbance of gut microbiota (GM) is closely related to accumulation of pathogenic proteins in NDs. On the one hand, pathogenic proteins directly produced by GM are transmitted from the gut to the central center via vagus nerve. On the other hand, The harmful substances produced by GM enter the peripheral circulation through intestinal barrier and cause inflammation, or cross the blood-brain barrier into the central center to cause inflammation, and cytokines produced by the central center cause the production of pathogenic proteins. These pathogenic proteins can produced by the above two aspects can cause the activation of central microglia and further lead to NDs development. In addition, certain GM and metabolites have been shown to have neuroprotective effects. Therefore, modulating GM may be a potential clinical therapeutic approach for NDs. In this review, we summarized the possible mechanism of NDs caused by abnormal accumulation of pathogenic proteins mediated by GM to induce the activation of central microglia, cause central inflammation and explore the therapeutic potential of dietary therapy and fecal microbiota transplantation (FMT) in NDs.
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Affiliation(s)
- Wei Wei
- The Mental Hospital of Yunnan Province, Mental Health Center Affiliated to Kunming Medical University, Kunming, China
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Shixu Wang
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Chongchong Xu
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Xuemei Zhou
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Xinqing Lian
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Lin He
- The Mental Hospital of Yunnan Province, Mental Health Center Affiliated to Kunming Medical University, Kunming, China
| | - Kuan Li
- School of Forensic Medicine, Kunming Medical University, Kunming, China
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20
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Zhang L, Liu Y, Sun Y, Zhang X. Combined Physical Exercise and Diet: Regulation of Gut Microbiota to Prevent and Treat of Metabolic Disease: A Review. Nutrients 2022; 14:nu14224774. [PMID: 36432462 PMCID: PMC9699229 DOI: 10.3390/nu14224774] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/09/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Unhealthy diet and sedentary lifestyle have contributed to the rising incidence of metabolic diseases, which is also accompanied by the shifts of gut microbiota architecture. The gut microbiota is a complicated and volatile ecosystem and can be regulated by diet and physical exercise. Extensive research suggests that diet alongside physical exercise interventions exert beneficial effects on metabolic diseases by regulating gut microbiota, involving in the changes of the energy metabolism, immune regulation, and the microbial-derived metabolites. OBJECTIVE In this review, we present the latest evidence in the modulating role of diet and physical exercise in the gut microbiota and its relevance to metabolic diseases. We also summarize the research from animal and human studies on improving metabolic diseases through diet-plus-exercise interventions, and new targeted therapies that might provide a better understanding of the potential mechanisms. METHODS A systematic and comprehensive literature search was performed in PubMed/Medline and Web of Science in October 2022. The key terms used in the searches included "combined physical exercise and diet", "physical exercise, diet and gut microbiota", "physical exercise, diet and metabolic diseases" and "physical exercise, diet, gut microbiota and metabolic diseases". CONCLUSIONS Combined physical exercise and diet offer a more efficient approach for preventing metabolic diseases via the modification of gut microbiota, abating the burden related to longevity.
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Affiliation(s)
- Li Zhang
- Department of Physical Education, China University of Mining and Technology, Beijing 100083, China
| | - Yuan Liu
- Department of Physical Education, China University of Mining and Technology, Beijing 100083, China
| | - Ying Sun
- Department of Food Science and Engineering, Ningbo University, Ningbo 315211, China
| | - Xin Zhang
- Department of Food Science and Engineering, Ningbo University, Ningbo 315211, China
- Correspondence:
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21
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Hashim HM, Makpol S. A review of the preclinical and clinical studies on the role of the gut microbiome in aging and neurodegenerative diseases and its modulation. Front Cell Neurosci 2022; 16:1007166. [PMID: 36406749 PMCID: PMC9669379 DOI: 10.3389/fncel.2022.1007166] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 10/03/2022] [Indexed: 12/06/2023] Open
Abstract
As the world population ages, the burden of age-related health problems grows, creating a greater demand for new novel interventions for healthy aging. Advancing aging is related to a loss of beneficial mutualistic microbes in the gut microbiota caused by extrinsic and intrinsic factors such as diet, sedentary lifestyle, sleep deprivation, circadian rhythms, and oxidative stress, which emerge as essential elements in controlling and prolonging life expectancy of healthy aging. This condition is known as gut dysbiosis, and it affects normal brain function via the brain-gut microbiota (BGM) axis, which is a bidirectional link between the gastrointestinal tract (GIT) and the central nervous system (CNS) that leads to the emergence of brain disorders such as Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS), and frontotemporal dementia (FTD). Here, we reviewed the role of the gut microbiome in aging and neurodegenerative diseases, as well as provided a comprehensive review of recent findings from preclinical and clinical studies to present an up-to-date overview of recent advances in developing strategies to modulate the intestinal microbiome by probiotic administration, dietary intervention, fecal microbiota transplantation (FMT), and physical activity to address the aging process and prevent neurodegenerative diseases. The findings of this review will provide researchers in the fields of aging and the gut microbiome design innovative studies that leverage results from preclinical and clinical studies to better understand the nuances of aging, gut microbiome, and neurodegenerative diseases.
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Affiliation(s)
| | - Suzana Makpol
- Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
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22
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Chen J, Zhang X, Bassey AP, Xu X, Gao F, Guo K, Zhou G. Prospects for the next generation of artificial enzymes for ensuring the quality of chilled meat: Opportunities and challenges. Crit Rev Food Sci Nutr 2022; 64:3583-3603. [PMID: 36239319 DOI: 10.1080/10408398.2022.2133077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
As living standards rise, the demand for high-quality chilled meat among consumers also grows. Researchers and enterprises have been interested in ensuring the quality of chilled meat in all links of the downstream industry. Nanozyme has shown the potential to address the aforementioned requirements. Reasons and approaches for the application of nanozymes in the freshness assessment or shelf life extension of chilled meat were discussed. The challenges for applying these nanozymes to ensure the quality of chilled meat were also summarized. Finally, this review examined the safety, regulatory status, and consumer attitudes toward nanozymes. This review revealed that the freshness assessment of chilled meat is closely related to mimicking the enzyme activities of nanozymes, whereas the shelf life changes of chilled meat are mostly dependent on the photothermal activities and pseudophotodynamic activities of nanozymes. In contrast, studies regarding the shelf life of chilled meat are more challenging to develop, as excessive heat or reactive oxygen species impair its quality. Notably, meat contains a complex matrix composition that may interact with the nanozyme, reducing its effectiveness. Nanopollution and mass manufacturing are additional obstacles that must be overcome. Therefore, it is vital to choose suitable approaches to ensure meat quality. Furthermore, the safety of nanozymes in meat applications still needs careful consideration owing to their widespread usage.
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Affiliation(s)
- Jiahui Chen
- Key Laboratory of Meat Processing, Ministry of Agriculture, Key Lab of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Xing Zhang
- Department of Trauma and Reconstructive Surgery, RWTH Aachen University, Aachen, Germany
| | - Anthony Pius Bassey
- Key Laboratory of Meat Processing, Ministry of Agriculture, Key Lab of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Xinglian Xu
- Key Laboratory of Meat Processing, Ministry of Agriculture, Key Lab of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Fenglei Gao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China
| | - Kaijin Guo
- Institute of Orthopedics, Department of Orthopedics, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Guanghong Zhou
- Key Laboratory of Meat Processing, Ministry of Agriculture, Key Lab of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, China
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Liu N, Yang C, Liang X, Cao K, Xie J, Luo Q, Luo H. Mesoporous silica nanoparticle-encapsulated Bifidobacterium attenuates brain Aβ burden and improves olfactory dysfunction of APP/PS1 mice by nasal delivery. J Nanobiotechnology 2022; 20:439. [PMID: 36207740 PMCID: PMC9547428 DOI: 10.1186/s12951-022-01642-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 09/23/2022] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Dysbiosis or imbalance of gut microbiota in Alzheimer's disease (AD) affects the production of short-chain fatty acids (SCFAs), whereas exogenous SCFAs supplementation exacerbates brain Aβ burden in APP/PS1 mice. Bifidobacterium is the main producer of SCFAs in the gut flora, but oral administration of Bifidobacterium is ineffective due to strong acids and bile salts in the gastrointestinal tract. Therefore, regulating the levels of SCFAs in the gut is of great significance for AD treatment. METHODS We investigated the feasibility of intranasal delivery of MSNs-Bifidobacterium (MSNs-Bi) to the gut and their effect on behavior and brain pathology in APP/PS1 mice. RESULTS Mesoporous silica nanospheres (MSNs) were efficiently immobilized on the surface of Bifidobacterium. After intranasal administration, fluorescence imaging of MSNs-Bi in the abdominal cavity and gastrointestinal tract revealed that intranasally delivered MSNs-Bi could be transported through the brain to the peripheral intestine. Intranasal administration of MSNs-Bi not only inhibited intestinal inflammation and reduced brain Aβ burden but also improved olfactory sensitivity in APP/PS1 mice. CONCLUSIONS These findings suggested that restoring the balance of the gut microbiome contributes to ameliorating cognitive impairment in AD, and that intranasal administration of MSNs-Bi may be an effective therapeutic strategy for the prevention of AD and intestinal disease.
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Affiliation(s)
- Ni Liu
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
| | - Changwen Yang
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaohan Liang
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Cao
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
| | - Jun Xie
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
| | - Qingming Luo
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
- School of Biomedical Engineering, Hainan University, Haikou, 570228, Hainan, China
| | - Haiming Luo
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China.
- MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China.
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Chen L, Wang B, Liu J, Wu X, Xu X, Cao H, Ji X, Zhang P, Li X, Hou Z, Li H. Different oral and gut microbial profiles in those with Alzheimer's disease consuming anti-inflammatory diets. Front Nutr 2022; 9:974694. [PMID: 36185672 PMCID: PMC9521405 DOI: 10.3389/fnut.2022.974694] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 08/15/2022] [Indexed: 12/06/2022] Open
Abstract
The number of people living with Alzheimer's disease (AD) is increasing alongside with aging of the population. Systemic chronic inflammation and microbial imbalance may play an important role in the pathogenesis of AD. Inflammatory diets regulate both the host microbiomes and inflammatory status. This study aimed to explore the impact of inflammatory diets on oral-gut microbes in patients with AD and the relationship between microbes and markers of systemic inflammation. The dietary inflammatory properties and the oral and gut microorganisms were analyzed using the dietary inflammatory index (DII) and 16S RNA in 60 patients with AD. The α-diversity was not related to the DII (p > 0.05), whereas the β-diversity was different in the oral microbiomes (R2 = 0.061, p = 0.013). In the most anti-inflammatory diet group, Prevotella and Olsenella were more abundant in oral microbiomes and Alistipes, Ruminococcus, Odoribacter, and unclassified Firmicutes were in the gut microbiomes (p < 0.05). Specific oral and gut genera were associated with interleukin-6 (IL)-6, complement 3 (C3), high-sensitivity C-reactive protein (hs-CRP), IL-1β, IL-4, IL-10, IL-12, and tumor necrosis factor-α (TNF-α) (p < 0.05). In conclusion, anti-inflammatory diets seem to be associated with increased abundance of beneficial microbes, and specific oral and gut microbial composition was associated with inflammatory markers.
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Affiliation(s)
- Lili Chen
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
- The School of Nursing, Fujian Medical University, Fuzhou, China
- Fujian Provincial Hospital, Fuzhou, China
- Lili Chen
| | - Bixia Wang
- The School of Nursing, Fujian Medical University, Fuzhou, China
| | - Jinxiu Liu
- The School of Nursing, Fujian Medical University, Fuzhou, China
| | - Xiaoqi Wu
- Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Xinhua Xu
- The School of Nursing, Fujian Medical University, Fuzhou, China
| | - Huizhen Cao
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
- Fujian Provincial Hospital, Fuzhou, China
| | - Xinli Ji
- The School of Nursing, Fujian Medical University, Fuzhou, China
| | - Ping Zhang
- The School of Nursing, Fujian Medical University, Fuzhou, China
| | - Xiuli Li
- The School of Nursing, Fujian Medical University, Fuzhou, China
| | - Zhaoyi Hou
- The School of Nursing, Fujian Medical University, Fuzhou, China
| | - Hong Li
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
- The School of Nursing, Fujian Medical University, Fuzhou, China
- Fujian Provincial Hospital, Fuzhou, China
- *Correspondence: Hong Li
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Kheirvari M, Lacy VA, Goudarzi H, RabieNezhad Ganji N, Kamali Ardekani M, Anbara T. The changes in cognitive function following bariatric surgery considering the function of gut microbiome. OBESITY PILLARS (ONLINE) 2022; 3:100020. [PMID: 37990721 PMCID: PMC10662092 DOI: 10.1016/j.obpill.2022.100020] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/11/2022] [Accepted: 05/11/2022] [Indexed: 11/23/2023]
Abstract
Background There is a correlation between gut microbiota and cognitive function. The mechanisms and pathways explain why the incidence of Alzheimer's disease in subjects undergoing bariatric surgery is lower than in other people with obesity. Methods In this review article, we aim to discuss the association of obesity, cognitive impairment, and physiological changes after bariatric surgery. Results Bariatric surgery has a series of physiological benefits which may lead to an improvement in cognitive functions in individuals who are prone to later developing Alzheimer's disease. Also, taxonomical change in the gut microbiome profile provides a healthy condition for living with better levels of cognition without neuropathological damages in older ages. Conclusion It can be concluded that there is a possible correlation between cognitive dysfunction and increased risk of cognitive dysfunction in people with a BMI higher than 40 kg/m2. Bariatric surgery may increase neurotransmitters and improve the gut bacteria, leading to a significant reduction in the risk of Alzheimer's disease.
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Affiliation(s)
- Milad Kheirvari
- Microbiology Research Centre, Pasteur Institute of Iran, Tehran, Iran
| | | | | | | | | | - Taha Anbara
- Medical Research Center, Tandis Hospital, Tehran, Iran
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26
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Sun X, Cai Y, Dai W, Jiang W, Tang W. The difference of gut microbiome in different biliary diseases in infant before operation and the changes after operation. BMC Pediatr 2022; 22:502. [PMID: 36002814 PMCID: PMC9404627 DOI: 10.1186/s12887-022-03570-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 08/21/2022] [Indexed: 11/25/2022] Open
Abstract
Background Evidence supports an association between cholestatic liver disease and changes in microbiome composition. Nevertheless, the identification of this special type of biliary atresia from non-biliary atresia cholestasis is still a major clinical difficulty. The purpose of this study is to compare the differences in the composition of gut microbiome between infants with biliary atresia and infant with non-biliary atrestic cholestasis, to find new ways to identify and diagnose these two diseases early, to understand the influence of the presence or absence of bile on the composition of the gut microbiome in infants with cholestasis. Methods Using 16S rDNA gene sequencing technology to analyze the intestinal flora of the participants. Results In terms of diversity, there is an obvious structural separation in the intestinal microbiota of the BA group and the CD group, and this structural separation also exists in the comparison between the two groups before surgery. Taxonomic analysis demonstrated that the two groups showed an increase in Proteobacteria and Firmicutes before surgery, and the relative abundance of potential pathogens such as Shigella, Streptococcus, Klebsiella, etc. increased, potential probiotics such as Bifidobacteria and Lactobacillus decreased, but the relative abundance of each genus was different between groups. It was found that Enterococcus, Ralstonia, Nitriliruptoraceae, etc. were differentially enriched in the BA group, the CD group are mainly enriched in Veillonella, Clostridium_sensu_stricto_1 and Lactobacillus. Functional analysis of the groups showed that the BA group mainly focused on the processes of energy release processes, and the CD group mainly focused on the biosynthesis of amino-acids to consume energy. Conclusions The composition of intestinal flora is different between biliary atresia and non-biliary atretic cholestasis. Enterococcus, Ralstonia, etc. may become biomarkers for the identification and diagnosis of both.
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Affiliation(s)
- Xinhe Sun
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Yaoyao Cai
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Wenwen Dai
- Department of Pediatric Surgery, Yancheng Maternity and Child Health Care Hospital, Yancheng, China
| | - Weiwei Jiang
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, China.
| | - Weibing Tang
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, China.
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Comparative study on the in vitro digestibility of chicken protein after different modifications. Food Chem 2022; 385:132652. [PMID: 35278732 DOI: 10.1016/j.foodchem.2022.132652] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 02/09/2022] [Accepted: 03/05/2022] [Indexed: 11/24/2022]
Abstract
The effects of tea polyphenols (TPPs) and ultrasound treatment (UDT) on the digestibility of chicken myofibrillar protein (MPN) in anenhanced oxidation system were investigated. As observed, the original aggregates of MPN were much lower in the UDT-assisted group than in the control protein group, and the difference widened after the incorporation of TPPs. The covalent structures of the UDT-assisted oxidation groups were verified via mass spectrometry and amino acid (AAD) measurements. The peptide abundance increased after the UDT-assisted covalent reaction and most of these peptides were derived from the structural proteins of MPNs according to the results of nano-LC-ESI-MS/MS. Digestion kinetic analysis showed that the digestion level of the EGCG-treated group was better than that of the other treated groups, regardless of the UDT-assisted covalent reaction. Overall, the combination of EGCG oxidation and UDT may be an efficient way to promote the nutritional value of the final MPN products.
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Li T, Tian D, Lu M, Wang B, Li J, Xu B, Chen H, Wu S. Gut microbiota dysbiosis induced by polychlorinated biphenyl 126 contributes to increased brain proinflammatory cytokines: Landscapes from the gut-brain axis and fecal microbiota transplantation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 241:113726. [PMID: 35691195 DOI: 10.1016/j.ecoenv.2022.113726] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 05/27/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
The pathogenesis of brain inflammation induced by polychlorinated biphenyl 126 (PCB126) has not yet been fully illustrated. Growing evidence highlights the relevance of the microbiota-gut-brain axis in central nervous system (CNS) dysfunction. Therefore, we aimed to study the role of the gut microbiota in PCB126-induced proinflammatory cytokine increases in the mouse brain. The results showed that PCB126 exposure significantly disordered gut bacterial communities, resulting in the enrichment of gram-negative bacteria (e.g., Bacteroidetes and Proteobacteria), further leading to elevated levels of the gram-negative bacterial lipopolysaccharide (LPS). Subsequently, colonic toll-like receptor 4 (TLR-4) was activated by bacterial LPS, which promoted proinflammatory cytokine generation and inhibited tight junction (TJ) protein expression. Then, bacterial LPS translocated from the gut lumen into the blood circulation and reached the brain, triggering LPS/TLR-4-mediated increases in brain proinflammatory cytokines. Further analysis after fecal microbiota transplantation (FMT) suggested that the gut microbiota disturbance caused by PCB126 could induce elevated bacterial LPS and trigger TLR-4-mediated increases in proinflammatory cytokines in the brain. This study highlights the possibility that PCB126-induced gut microbiota disorder contributes to increased brain proinflammatory cytokines. These results provide a new perspective for identifying the toxicity mechanisms of PCB126 and open up the possibility of modulating the gut microbiota as a therapeutic target for CNS disease caused by environmental pollution.
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Affiliation(s)
- Tongtong Li
- Department of Applied Biology, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Dongcan Tian
- Department of Applied Biology, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Mengtian Lu
- Department of Applied Biology, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Bijiao Wang
- Department of Applied Biology, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jun Li
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Baohua Xu
- Department of Applied Biology, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Hao Chen
- Department of Applied Biology, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Shijin Wu
- Department of Applied Biology, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China.
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Eleutheroside E supplementation prevents radiation-induced cognitive impairment and activates PKA signaling via gut microbiota. Commun Biol 2022; 5:680. [PMID: 35804021 PMCID: PMC9270490 DOI: 10.1038/s42003-022-03602-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 05/04/2022] [Indexed: 11/08/2022] Open
Abstract
Radiation affects not only cognitive function but also gut microbiota. Eleutheroside E (EE), a principal active compound of Acanthopanax senticosus, has a certain protective effect on the nervous system. Here, we find a four-week EE supplementation to the 60Co-γ ray irradiated mice improves the cognition and spatial memory impairments along with the protection of hippocampal neurons, remodels the gut microbiota, especially changes of Lactobacillus and Helicobacter, and altered the microbial metabolites including neurotransmitters (GABA, NE, ACH, 5-HT) as well as their precursors. Furthermore, the fecal transplantation of EE donors verifies that EE alleviated cognition and spatial memory impairments, and activates the PKA/CREB/BDNF signaling via gut microbiota. Our findings provide insight into the mechanism of EE effect on the gut-brain axis and underpin a proposed therapeutic value of EE in cognitive and memory impairments induced by radiation.
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The potential role of the brain–gut axis in the development and progression of Alzheimer's disease. J Transl Int Med 2022; 10:89-91. [PMID: 35959446 PMCID: PMC9328030 DOI: 10.2478/jtim-2022-0016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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31
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Effects of Sporisorium reiliana polysaccharides and Phoenix dactylifera monosaccharides on the gut microbiota and serum metabolism in mice with fructose-induced hyperuricemia. Arch Microbiol 2022; 204:436. [PMID: 35763072 DOI: 10.1007/s00203-022-03053-y] [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: 12/03/2021] [Revised: 05/26/2022] [Accepted: 05/30/2022] [Indexed: 11/02/2022]
Abstract
In recent decades, the prevalence of hyperuricemia has increased, and dietary fructose is an important risk factor for the development of this disease. This study investigated and compared the effects of Sphacelotheca reiliana polysaccharides and Phoenix dactylifera monosaccharides on a series of physiological and biochemical indicators and on the metagenomes and serum metabolites in mice with hyperuricemia caused by a high-fructose diet. S. reiliana polysaccharides inhibited uric acid biosynthesis and promoted uric acid excretion, thereby alleviating the hyperuricemia phenotype. In addition, hyperuricemia was closely related to the gut microbiota. After treatment with S. reiliana polysaccharides, the abundances of Bacteroidetes and Proteobacteria in the mouse intestines were decreased, the expression of genes involved in glycolysis/gluconeogenesis metabolic pathways and purine metabolism was downregulated, and the dysfunction of the gut microbiota was alleviated. With regard to serum metabolism, the abundance of hippuric acid, uridine, kynurenic acid, propionic acid and arachidonoyl decreased, and the abundances of serum metabolites in inflammatory pathways involved in kidney injury and gout, such as bile acid metabolism, purine metabolism and tryptophan metabolism pathways, decreased. P. dactylifera monosaccharides aggravated hyperuricemia. This research provides a valuable reference for the development of sugar applications.
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Zhang C, Ren W, Li M, Wang W, Sun C, Liu L, Fang Y, Liu L, Yang X, Zhang X, Li S. Association Between the Children's Dietary Inflammatory Index (C-DII) and Markers of Inflammation and Oxidative Stress Among Children and Adolescents: NHANES 2015-2018. Front Nutr 2022; 9:894966. [PMID: 35711543 PMCID: PMC9195621 DOI: 10.3389/fnut.2022.894966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 04/27/2022] [Indexed: 12/26/2022] Open
Abstract
Objectives To explore the association of Children's Dietary Inflammatory Index (C-DII) scores with inflammation and markers of inflammatory factors in children and adolescents. Methods Data on dietary nutrient intake, markers of inflammation (ferritin, alkaline phosphatase, C-reactive protein (CRP), absolute neutrophil cell count and lymphocyte count) and oxidative stress (serum bilirubin, albumin, and iron) were available for participants aged 6–19 years (n = 1281). Each participant's C-DII score was calculated based on a 24-h diet and recall. Generalized linear models were applied to examine associations between C-DII and markers of inflammation and oxidative stress, while adjusting for covariates. Restricted cubic splines were used to explore the dose-response association of C-DII scores with indicators of inflammatory oxidative stress. Akaike's Information Criterionwas applied to compare the performance of linear and non-linear models. Results After adjusting for potential confounders, quantile regression results showed that when comparing C-DII quartile 4 (most pro-inflammatory) and quartile 1 (most anti-inflammatory), lymphocytes, ferritin, CRP were statistically significant differences in serum bilirubin, albumin and serum iron (P < 0.05). The C-DII score showed a non-linear relationship with inflammatory oxidative stress indicators. Overweight/obese children and adolescents who ate a high pro-inflammatory diet were more likely to have higher levels of inflammatory cytokines (P = 0.002). Conclusions The dietary inflammatory index in children is associated with markers of chronic inflammation and oxidative stress. A pro-inflammatory diet resulted in increased serum concentrations of these markers, implying that early dietary interventions have implications for reducing chronic inflammation and oxidative stress in children and adolescents.
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Affiliation(s)
- Chuang Zhang
- Department of Pediatric Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Weirui Ren
- Department of Gastroenterology, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Meng Li
- Department of Pediatric Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Wenbo Wang
- Department of Pediatric Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Chi Sun
- Department of Pediatric Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Lin Liu
- Department of Pediatric Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yanbin Fang
- Department of Pediatric Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Lin Liu
- Department of Pediatric Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiaofeng Yang
- Department of Pediatric Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiangjian Zhang
- Hebei Key Laboratory of Vascular Homeostasis and Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang, China
| | - Suolin Li
- Department of Pediatric Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
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Tan J, Li X, Zhu Y, Sullivan MA, Deng B, Zhai X, Lu Y. Antidepressant Shugan Jieyu Capsule Alters Gut Microbiota and Intestinal Microbiome Function in Rats With Chronic Unpredictable Mild Stress -Induced Depression. Front Pharmacol 2022; 13:828595. [PMID: 35770090 PMCID: PMC9234866 DOI: 10.3389/fphar.2022.828595] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 05/30/2022] [Indexed: 12/12/2022] Open
Abstract
Shugan Jieyu Capsule (SG) has been widely used in China to treat mild to moderate depression. Hypericum perforatum L. (St John’s Wort, SJW) is the main ingredient of SG and has been used as herbal medicine to treat depression in western countries. However, it is known that SJW has low bioavailability and does not easily get through the blood-brain barrier. Therefore, how SG plays an antidepressant effect in the central nervous system (CNS) remains an urgent problem to be solved. Mounting research has described the relationship between antidepressants and intestinal microbiota to illuminate antidepressive mechanisms in the CNS. We aimed to investigate the effects of therapy with SG on the function of gut microbiota and intestinal microbiota in rats with chronic unpredictable mild stress (CUMS)-induced depression. The psychophysiological state and the hypothalamic-pituitary-adrenal axis function of rats are evaluated through behavioral experiments, corticosterone levels, serotonin levels, and adrenal index measurements. 16S rDNA amplicon sequencing is used to test the changes in gut microbiota and make functional predictions of genes. With treatment of SG, the depression-like behaviors of CUMS-induced rats were reversed; the corticosterone levels and the adrenal index decreased significantly; the level of serotonin increased significantly; and the alpha and beta diversity analysis of microbiota showed an increase in the richness and uniformity of the flora were increased. SG regulated the relative abundance of Actinobacteria, Erysipelotrichaceae, Bifidobacteriaceae, Atopobiaceae, Dubosiella, and Bifidobacterium; Linear discriminant analysis effect size analysis demonstrated that Lactobacillaceae (family level), Lactobacillus (genus level), Lactobacillales (order level), Bacilli (class level), and Lactobacillus-reuteri (species level) were biomarkers in the SG group samples, and also likely to modulate metabolic pathways, such as those involved in carbohydrate metabolism, amino acid metabolism, and signal transduction. These data clearly illustrated the effect of SG on gut microbiome, thus laying the foundation for uncovering more insights on the therapeutic function of the traditional Chinese antidepressants. The potential of SG on mechanisms of antidepression to alter gut microbiota and intestinal microbiome function exposed to CUMS can be explored.
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Affiliation(s)
- Jingxuan Tan
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xixuan Li
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Zhu
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mitchell A. Sullivan
- Glycation and Diabetes Group, Mater Research Institute- University of Queensland, The Translational Research Institute, Brisbane, QLD, Australia
| | - Bin Deng
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Clinical Research Centre of Precision Drug Use for Major Diseases, Wuhan, China
| | - Xuejia Zhai
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Clinical Research Centre of Precision Drug Use for Major Diseases, Wuhan, China
- *Correspondence: Xuejia Zhai, ; Yongning Lu,
| | - Yongning Lu
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Clinical Research Centre of Precision Drug Use for Major Diseases, Wuhan, China
- *Correspondence: Xuejia Zhai, ; Yongning Lu,
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McGrattan A, Stewart CJ, Cassidy A, Woodside JV, McEvoy CT. Diet Patterns, the Gut Microbiome, and Alzheimer's Disease. J Alzheimers Dis 2022; 88:933-941. [PMID: 35634849 DOI: 10.3233/jad-220205] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Given the complex bidirectional communication system that exists between the gut microbiome and the brain, there is growing interest in the gut microbiome as a novel and potentially modifiable risk factor for Alzheimer's disease (AD). Gut dysbiosis has been implicated in the pathogenesis and progression of AD by initiating and prolonging neuroinflammatory processes. The metabolites of gut microbiota appear to be critical in the mechanism of the gut-brain axis. Gut microbiota metabolites, such as trimethylamine-n-oxide, lipopolysaccharide, and short chain fatty acids, are suggested to mediate systemic inflammation and intracerebral amyloidosis via endothelial dysfunction. Emerging data suggest that the fungal microbiota (mycobiome) may also influence AD pathology. Importantly, 60% of variation in the gut microbiome is attributable to diet, therefore modulating the gut microbiome through dietary means could be an effective approach to reduce AD risk. Given that people do not eat isolated nutrients and instead consume a diverse range of foods and combinations of nutrients that are likely to be interactive, studying the effects of whole diets provides the opportunity to account for the interactions between different nutrients. Thus, dietary patterns may be more predictive of real-life effect on gut microbiome and AD risk than foods or nutrients in isolation. Accumulating evidence from experimental and animal studies also show potential effects of gut microbiome on AD pathogenesis. However, data from human dietary interventions are lacking. Well-designed intervention studies are needed in diverse populations to determine the influence of diet on gut microbiome and inform the development of effective dietary strategies for prevention of AD.
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Affiliation(s)
- Andrea McGrattan
- School of Biomedical, Nutritional and Sport Sciences, Newcastle University, UK
| | | | - Aedín Cassidy
- Institute For Global Food Security, Queen's University Belfast, UK
| | - Jayne V Woodside
- Institute For Global Food Security, Queen's University Belfast, UK
| | - Claire T McEvoy
- Institute For Global Food Security, Queen's University Belfast, UK.,Global Brain Health Institute, University of California San Francisco, USA and Trinity College Dublin, Ireland
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Zhang K, Ma X, Zhang R, Liu Z, Jiang L, Qin Y, Zhang D, Tian P, Gao Z, Zhang N, Shi Z, Xu S. Crosstalk Between Gut Microflora and Vitamin D Receptor SNPs Are Associated with the Risk of Amnestic Mild Cognitive Impairment in a Chinese Elderly Population. J Alzheimers Dis 2022; 88:357-373. [PMID: 35599486 DOI: 10.3233/jad-220101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background: The interactions between environmental factors and genetic variants have been implicated in the pathogenesis of Alzheimer’s disease (AD). The altered gut microbiota (GM) and vitamin D deficiency are closely associated with the higher risk of AD. Objective: This study was performed to evaluate whether the crosstalk between GM and single nucleotide polymorphisms (SNPs) of vitamin D receptor (VDR) or vitamin D binding protein (VDBP) have a link with the risk of amnestic mild cognitive impairment (aMCI) in the Chinese elderly population. Methods: A total of 171 aMCI patients and 261 cognitive normal controls (NC) were enrolled in this study. Six tag SNPs of VDR and VDBP were genotyped by PCR-RFLP. The serum levels of vitamin D, Aβ1-42, and p-tau (181P) were determined by using of ELISA kits. The alterations in the GM were analyzed by full-length 16S ribosomal RNA (rRNA) gene sequencing. Results: The frequencies of AG genotype and A allele of VDR rs1544410 in aMCI group were significantly higher than that in NC group (genotype: p = 0.002, allele: p = 0.003). Patients with aMCI showed an abnormal GM composition compared with NC group. Interestingly, significant differences in GM composition were found between aMCI and NC group among individuals with AG genotype, as well as between individuals with AG and GG genotype of VDR rs1544410 among patients with aMCI. Conclusion: These results implicated that the crosstalk between gut microflora and vitamin D receptor variants are associated with the risk of aMCI in Chinese elderly population.
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Affiliation(s)
- Kaixia Zhang
- Central Laboratory, The First Hospital of HebeiMedical University, Shijiazhuang, P. R. China
| | - Xiaoying Ma
- Central Laboratory, The First Hospital of HebeiMedical University, Shijiazhuang, P. R. China
| | - Rui Zhang
- Central Laboratory, The First Hospital of HebeiMedical University, Shijiazhuang, P. R. China
- Hebei International Joint Research Center forBrain Science, Shijiazhuang, P. R. China
- HebeiKey Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Zanchao Liu
- Department ofEndocrinology, The Second Hospital of Shijiazhuang City, Shijiazhuang, P. R. China
| | - Lei Jiang
- Central Laboratory, The First Hospital of HebeiMedical University, Shijiazhuang, P. R. China
- Hebei International Joint Research Center forBrain Science, Shijiazhuang, P. R. China
- HebeiKey Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Yushi Qin
- Central Laboratory, The First Hospital of HebeiMedical University, Shijiazhuang, P. R. China
| | - Di Zhang
- Central Laboratory, The First Hospital of HebeiMedical University, Shijiazhuang, P. R. China
| | - Pei Tian
- Central Laboratory, The First Hospital of HebeiMedical University, Shijiazhuang, P. R. China
| | - ZhaoYu Gao
- Central Laboratory, The First Hospital of HebeiMedical University, Shijiazhuang, P. R. China
- Hebei International Joint Research Center forBrain Science, Shijiazhuang, P. R. China
- HebeiKey Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Nan Zhang
- Central Laboratory, The First Hospital of HebeiMedical University, Shijiazhuang, P. R. China
- Hebei International Joint Research Center forBrain Science, Shijiazhuang, P. R. China
- HebeiKey Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Zhongli Shi
- Central Laboratory, The First Hospital of HebeiMedical University, Shijiazhuang, P. R. China
- Hebei International Joint Research Center forBrain Science, Shijiazhuang, P. R. China
- HebeiKey Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Shunjiang Xu
- Central Laboratory, The First Hospital of HebeiMedical University, Shijiazhuang, P. R. China
- Hebei International Joint Research Center forBrain Science, Shijiazhuang, P. R. China
- HebeiKey Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
- Research Unit of Digestive Tract Microecosystem Pharmacology and Toxicology, ChineseAcademy of Medical Sciences, Beijing, P. R. China
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Yang B, He M, Chen X, Sun M, Pan T, Xu X, Zhang X, Gong Q, Zhao Y, Jin Z, Cheng Z. Acupuncture Effect Assessment in APP/PS1 Transgenic Mice: On Regulating Learning-Memory Abilities, Gut Microbiota, and Microbial Metabolites. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:1527159. [PMID: 35432583 PMCID: PMC9012623 DOI: 10.1155/2022/1527159] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/02/2022] [Indexed: 12/12/2022]
Abstract
Alzheimer's disease (AD) is a brain illness that affects learning and memory capacities over time. In recent investigations, acupuncture has been shown to be an effective alternative treatment for AD. We investigated the effect of acupuncture on learning and memory abilities using a water maze in APP/PS1 transgenic mice. The amounts of Aβ and tau protein in mice's hippocampal tissue were determined using Western blot. The levels of IL-1β, IL-10, LPS and TNF-α in mice's serum were measured using ELISA. The variations of gut microbiota in mice's feces were determined using the 16SrDNA technique, and the metabolites were examined using a untargeted metabolomics methodology. The results showed that acupuncture treatment improved mice's learning and memory abilities substantially. Acupuncture therapy regulated the Aβ and tau protein concentration as well as the levels of IL-10 and LPS. Acupuncture treatment influenced the mouse microbiota and metabolites and had been linked to six biochemical pathways. This study adds to our understanding of the effect of acupuncture on AD and opens the door to further research into the alterations of intestinal bacteria in the presence of AD.
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Affiliation(s)
- Bo Yang
- Liaoning University of Traditional Chinese Medicine, No. 79, Chongshan Eastern Rd, Huanggu District, 110847 Shenyang, China
- Changchun University of Chinese Medicine, No. 1035, Boshuo Rd, Jingyue Economic Development District, 130117 Changchun, China
| | - Min He
- Changchun University of Chinese Medicine, No. 1035, Boshuo Rd, Jingyue Economic Development District, 130117 Changchun, China
| | - Xinhua Chen
- Changchun University of Chinese Medicine, No. 1035, Boshuo Rd, Jingyue Economic Development District, 130117 Changchun, China
| | - Mengmeng Sun
- Changchun University of Chinese Medicine, No. 1035, Boshuo Rd, Jingyue Economic Development District, 130117 Changchun, China
| | - Ting Pan
- Changchun University of Chinese Medicine, No. 1035, Boshuo Rd, Jingyue Economic Development District, 130117 Changchun, China
| | - Xiaohong Xu
- Changchun University of Chinese Medicine, No. 1035, Boshuo Rd, Jingyue Economic Development District, 130117 Changchun, China
| | - Xuesong Zhang
- Changchun University of Chinese Medicine, No. 1035, Boshuo Rd, Jingyue Economic Development District, 130117 Changchun, China
| | - Qing Gong
- Changchun University of Chinese Medicine, No. 1035, Boshuo Rd, Jingyue Economic Development District, 130117 Changchun, China
| | - Ye Zhao
- Northwest University, No. 229, Taibai North Road, Xi' an 710069, China
| | - Ziqi Jin
- Changchun University of Chinese Medicine, No. 1035, Boshuo Rd, Jingyue Economic Development District, 130117 Changchun, China
| | - Zedong Cheng
- Liaoning University of Traditional Chinese Medicine, No. 79, Chongshan Eastern Rd, Huanggu District, 110847 Shenyang, China
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Wu S, Wu Q, Wang J, Li Y, Chen B, Zhu Z, Huang R, Chen M, Huang A, Xie Y, Jiao C, Ding Y. Novel Selenium Peptides Obtained from Selenium-Enriched Cordyceps militaris Alleviate Neuroinflammation and Gut Microbiota Dysbacteriosis in LPS-Injured Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3194-3206. [PMID: 35238567 DOI: 10.1021/acs.jafc.1c08393] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Increasing attention focuses on the relationship between neuroinflammation and Alzheimer's disease (AD). The reports on the microbiota-gut-brain axis reveal that the regulation by gut microbiota is an effective way to intervene in neuroinflammation-related AD. In this study, two novel selenium peptides (Se-Ps), VPRKL(Se)M (Se-P1) and RYNA(Se)MNDYT (Se-P2), with neuroprotection effects were obtained from Se-enriched Cordyceps militaris. Se-P1 and Se-P2 pre-protection led to a 30 and 33% increase in the PC-12 cell viability compared to the damage group, respectively. Moreover, Se-Ps exhibited a significant pre-protection against LPS-induced inflammatory and oxidative stress in the colon and brain by inhibiting the production of pro-inflammatory mediators (p < 0.05) and malondialdehyde, as well as promoting anti-inflammatory cytokine level and antioxidant enzyme activity (p < 0.05), which may alleviate the cognitive impairment in LPS-injured mice (p < 0.05). Se-Ps not only repaired the intestinal mucosa damage of LPS-injured mice but also had a positive effect on gut microbiota dysbacteriosis by increasing the abundance of Lactobacillus and Alistipes and decreasing the abundance of Akkermansia and Bacteroides. Collectively, the antioxidant, anti-inflammatory, and regulating properties on gut microflora of Se-Ps contribute to their neuroprotection, supporting that Se-Ps could be a promising dietary supplement in the prevention and/or treatment of AD.
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Affiliation(s)
- Shujian Wu
- Department of Food Science and Technology, Institute of Food Safety and Nutrition, College of Science & Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, P.R. China
- Institute of Microbiology, Guangdong Academy of Sciences, State Key Laboratory of Applied Microbiology Southern China, Guangdong, Guangdong Provincial Key Laboratory of Microbial Safety and Health, Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangzhou 510070, P.R. China
| | - Qingping Wu
- Institute of Microbiology, Guangdong Academy of Sciences, State Key Laboratory of Applied Microbiology Southern China, Guangdong, Guangdong Provincial Key Laboratory of Microbial Safety and Health, Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangzhou 510070, P.R. China
| | - Juan Wang
- College of Food Science, South China Agricultural University, Guangzhou 510070, P.R. China
| | - Yangfu Li
- Department of Food Science and Technology, Institute of Food Safety and Nutrition, College of Science & Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, P.R. China
- Institute of Microbiology, Guangdong Academy of Sciences, State Key Laboratory of Applied Microbiology Southern China, Guangdong, Guangdong Provincial Key Laboratory of Microbial Safety and Health, Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangzhou 510070, P.R. China
| | - Bo Chen
- Department of Food Science and Technology, Institute of Food Safety and Nutrition, College of Science & Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, P.R. China
- Institute of Microbiology, Guangdong Academy of Sciences, State Key Laboratory of Applied Microbiology Southern China, Guangdong, Guangdong Provincial Key Laboratory of Microbial Safety and Health, Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangzhou 510070, P.R. China
| | - Zhenjun Zhu
- Department of Food Science and Technology, Institute of Food Safety and Nutrition, College of Science & Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, P.R. China
| | - Rui Huang
- Department of Food Science and Technology, Institute of Food Safety and Nutrition, College of Science & Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, P.R. China
- Institute of Microbiology, Guangdong Academy of Sciences, State Key Laboratory of Applied Microbiology Southern China, Guangdong, Guangdong Provincial Key Laboratory of Microbial Safety and Health, Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangzhou 510070, P.R. China
| | - Mengfei Chen
- Department of Food Science and Technology, Institute of Food Safety and Nutrition, College of Science & Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, P.R. China
- Institute of Microbiology, Guangdong Academy of Sciences, State Key Laboratory of Applied Microbiology Southern China, Guangdong, Guangdong Provincial Key Laboratory of Microbial Safety and Health, Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangzhou 510070, P.R. China
| | - Aohuan Huang
- Department of Food Science and Technology, Institute of Food Safety and Nutrition, College of Science & Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, P.R. China
- Institute of Microbiology, Guangdong Academy of Sciences, State Key Laboratory of Applied Microbiology Southern China, Guangdong, Guangdong Provincial Key Laboratory of Microbial Safety and Health, Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangzhou 510070, P.R. China
| | - Yizhen Xie
- Guangdong Yuewei Edible Mushroom Technology Co., Ltd., Guangzhou 510700, P.R. China
| | - Chunwei Jiao
- Guangdong Yuewei Edible Mushroom Technology Co., Ltd., Guangzhou 510700, P.R. China
| | - Yu Ding
- Department of Food Science and Technology, Institute of Food Safety and Nutrition, College of Science & Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, P.R. China
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Hao S, Yang Y, Han A, Chen J, Luo X, Fang G, Liu J, Wang S. Glycosides and Their Corresponding Small Molecules Inhibit Aggregation and Alleviate Cytotoxicity of Aβ40. ACS Chem Neurosci 2022; 13:766-775. [PMID: 35230090 DOI: 10.1021/acschemneuro.1c00729] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Polyphenols are the class of naturally synthesized compounds in the secondary metabolism of plants, which are widely distributed in fruits and vegetables. Their potential health treatment strategies have attracted wide attention in the scientific community. The abnormal aggregation of Aβ to form mature fibrils is pathologically related to Alzheimer's disease (AD). Therefore, inhibiting Aβ40 fibrillogenesis was considered to be the major method for the intervention and therapy of AD. Glycosides, as a cluster of natural phenolic compounds, are widely distributed in Chinese herbs, fruits, and vegetables. The inhibitory effect of glycosides (phloridzin, salidroside, polydatin, geniposide, and gastrodin) and their corresponding small molecules (phloretin, 4-hydroxyphenyl ethanol, resveratrol, genipin, and 4-hydroxybenzyl alcohol) on Aβ40 aggregation and fibrils prolongation, disaggregation against mature fibrils, and the resulting cytotoxicity were studied by systematical biochemical, cell biology and molecular docking techniques, respectively. As a result, all inhibitors were observed against Aβ40 aggregation and fibrils prolongation and disaggregated mature Aβ40 fibrils in a dose-dependent manner. Besides, the cell validity experiments also showed that all inhibitors could effectively alleviate the cytotoxicity induced by Aβ40 aggregates, and the glycoside groups played important roles in this inhibiting process. Finally, molecular docking was performed to study the interactions between these inhibitors and Aβ40. Docking showed that all inhibitors were bound to the similar region of Aβ40, and glycoside group formed hydrogen bonds with the pivotal residues Lys16. These results indicated that the glycoside groups could increase the inhibitory effects and reduce cytotoxicity. Glycosides have tremendous potential to be developed as an innovative type of aggregation inhibitor to control and treat neurodegenerative diseases.
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Affiliation(s)
- Sijia Hao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Quality and Health of Tianjin, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Yayu Yang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Quality and Health of Tianjin, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Ailing Han
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Quality and Health of Tianjin, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Jianan Chen
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Quality and Health of Tianjin, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Xiaoyu Luo
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Quality and Health of Tianjin, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Guozhen Fang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Quality and Health of Tianjin, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Jifeng Liu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Quality and Health of Tianjin, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Quality and Health of Tianjin, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
- Research Center of Food Science and Human Health, School of Medicine, Nankai University, Tianjin 300071, PR China
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Prenatal Isoflurane Exposure Induces Developmental Neurotoxicity in Rats: the Role of Gut Microbiota. Neurotox Res 2022; 40:485-497. [PMID: 35294710 DOI: 10.1007/s12640-022-00487-6] [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: 10/14/2021] [Revised: 02/21/2022] [Accepted: 03/07/2022] [Indexed: 10/18/2022]
Abstract
Fetal exposure to inhaled anesthetics, such as isoflurane, may lead to neurodevelopmental impairment in offspring. Yet, the mechanisms of prenatal isoflurane-induced developmental neurotoxicity have not been fully elucidated. Gut microbiota is a pivotal modulator of brain development and functions. While the antibiotic effect of isoflurane has been previously investigated, the relationship between prenatal isoflurane exposure and postnatal gut microbiota, brain biology, and behavior remains unknown. In the present study, we treated pregnant rats with 2% isoflurane for 4 h on gestational day 14. Their offspring were tested with novel object recognition task on postnatal day 28 (P28) to assess cognition. Fecal microbiome was assessed using 16S RNA sequencing. We also analyzed hippocampal expression of brain-derived neurotrophic factor (BDNF) in P28 rat brains. To further explore the role of gut microbiota on prenatal isoflurane-induced developmental neurotoxicity, we treated rats with mixed probiotics on P14 for 14 days and evaluated novel object recognition and hippocampal expression of BDNF on P28. Results indicate that prenatal exposure to isoflurane significantly decreased novel object recognition (novel object preference ratio: mean difference (MD) - 0.157; 95% confidence interval (CI) - 0.234 to - 0.080, P < 0.001) paralleled by diminished expression of hippocampal BDNF in juvenile rats. Prenatal exposure to isoflurane also significantly altered the diversity and composition of gut microbiota. Treatment with probiotics mitigated these changes in cognition (novel object preference ratio: isoflurane group vs. control group: MD - 0.177; 95% CI - 0.307 to - 0.047, P = 0.006; probiotic group vs. isoflurane group: MD 0.140; 95% CI 0.004 to 0.275, P = 0.042) and BDNF expression. Taken together, our findings suggest that gut dysbiosis may be involved in the pathogenesis of maternal isoflurane exposure-induced postnatal cognitive impairment. To determine the causal relationship between gut microbiota and cognition in prenatal anesthetic-induced developmental neurotoxicity, further studies are needed.
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Wang X, Cheng L, Liu Y, Zhang R, Wu Z, Weng P, Zhang P, Zhang X. Polysaccharide Regulation of Intestinal Flora: A Viable Approach to Maintaining Normal Cognitive Performance and Treating Depression. Front Microbiol 2022; 13:807076. [PMID: 35369451 PMCID: PMC8966502 DOI: 10.3389/fmicb.2022.807076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 02/21/2022] [Indexed: 12/21/2022] Open
Abstract
The intestinal tract of a healthy body is home to a large variety and number of microorganisms that will affect every aspect of the host’s life. In recent years, polysaccharides have been found to be an important factor affecting intestinal flora. Polysaccharides are widely found in nature and play a key role in the life activities of living organisms. In the intestinal tract of living organisms, polysaccharides have many important functions, such as preventing the imbalance of intestinal flora and maintaining the integrity of the intestinal barrier. Moreover, recent studies suggest that gut microbes can influence brain health through the brain-gut axis. Therefore, maintaining brain health through polysaccharide modulation of gut flora deserves further study. In this review, we outline the mechanisms by which polysaccharides maintain normal intestinal flora structure, as well as improving cognitive function in the brain via the brain-gut axis by virtue of the intestinal flora. We also highlight the important role that gut microbes play in the pathogenesis of depression and the potential for treating depression through the use of polysaccharides to modulate the intestinal flora.
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Affiliation(s)
- Xinzhou Wang
- Department of Food Science and Engineering, Ningbo University, Ningbo, China
| | - Lu Cheng
- Department of Food Science, Rutgers, The State University of New Jersey, Newark, NJ, United States
- *Correspondence: Lu Cheng,
| | - Yanan Liu
- Department of Food Science and Engineering, Ningbo University, Ningbo, China
| | - Ruilin Zhang
- Department of Food Science and Engineering, Ningbo University, Ningbo, China
| | - Zufang Wu
- Department of Food Science and Engineering, Ningbo University, Ningbo, China
| | - Peifang Weng
- Department of Food Science and Engineering, Ningbo University, Ningbo, China
| | - Peng Zhang
- Department of Food Science and Engineering, Ningbo University, Ningbo, China
- Department of Student Affairs, Xinyang Normal University, Xinyang, China
- Peng Zhang,
| | - Xin Zhang
- Department of Food Science and Engineering, Ningbo University, Ningbo, China
- Xin Zhang,
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41
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Comprehensive analysis of Sparassis crispa polysaccharide characteristics during the in vitro digestion and fermentation model. Food Res Int 2022; 154:111005. [DOI: 10.1016/j.foodres.2022.111005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 01/21/2022] [Accepted: 02/10/2022] [Indexed: 12/20/2022]
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42
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Fang C, Zuo K, Zhang W, Zhong J, Li J, Xu L, Yang X. Association between Gut Microbiota Dysbiosis and the CHA2DS2-VASc Score in Atrial Fibrillation Patients. Int J Clin Pract 2022; 2022:7942605. [PMID: 35685549 PMCID: PMC9159190 DOI: 10.1155/2022/7942605] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 03/11/2022] [Accepted: 03/15/2022] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND In our previous studies, we found a disordered taxonomic composition and function of gut microbiota (GM) in atrial fibrillation (AF) patients. However, direct evidence about the association between dysbiotic microbiota and thromboembolic risk in AF is lacking. AIMS In this study, we analyzed the interaction of GM and related functional patterns in AF with different CHA2DS2-VASc scores to assess its potential as a biomarker for predicting stroke risk. Patients and Methods. The CHA2DS2-VASc score was used for thromboembolic risk stratification in AF according to American Heart Association (AHA) guidelines. We investigated the taxonomic and functional annotation of GM based on metagenomic data from 50 AF patients (32 with high thromboembolic risk (CHA2DS2-VASc score ≥2 (males) or CHA2DS2-VASc score ≥3 (females)) and 18 individuals with low thromboembolic risk (CHA2DS2-VASc score <2 (males) or CHA2DS2-VASc score <3 (females))). RESULTS The gut microbial diversity, composition, and function in AF were different in high and low CHA2DS2-VASc score groups. In high thromboembolic risk group, the abundance of Prevotella, Lachnospiraceae, and Eubacterium rectale, related to the production of short-chain fatty acids and anti-inflammatory were reduced (all P < 0.05). Furthermore, annotated by Kyoto Encyclopedia of Genes and Genomes (KEGG), a database of genes and genomes, the KEGG orthology-based scoring approach exhibited a significant association with thromboembolic risk in AF patients. CONCLUSIONS Imbalance of GM and microbial dysfunction are involved in aggravated thromboembolic risk of AF.
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Affiliation(s)
- Chen Fang
- Heart Center & Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Kun Zuo
- Heart Center & Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Wanjing Zhang
- Heart Center & Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Jiuchang Zhong
- Heart Center & Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Jing Li
- Heart Center & Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Li Xu
- Heart Center & Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Xinchun Yang
- Heart Center & Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
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Gubert C, Gasparotto J, H. Morais L. OUP accepted manuscript. Gastroenterol Rep (Oxf) 2022; 10:goac017. [PMID: 35582476 PMCID: PMC9109005 DOI: 10.1093/gastro/goac017] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 03/22/2022] [Accepted: 04/01/2022] [Indexed: 11/14/2022] Open
Abstract
Recent research has been uncovering the role of the gut microbiota for brain health and disease. These studies highlight the role of gut microbiota on regulating brain function and behavior through immune, metabolic, and neuronal pathways. In this review we provide an overview of the gut microbiota axis pathways to lay the groundwork for upcoming sessions on the links between the gut microbiota and neurogenerative disorders. We also discuss how the gut microbiota may act as an intermediate factor between the host and the environment to mediate disease onset and neuropathology. Based on the current literature, we further examine the potential for different microbiota-based therapeutic strategies to prevent, to modify, or to halt the progress of neurodegeneration.
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Affiliation(s)
- Carolina Gubert
- Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, University of Melbourne, Parkville, Victoria, Australia
| | - Juciano Gasparotto
- Instituto de Ciências Biomédicas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, Alfenas, Minas Gerais, Brasil
| | - Livia H. Morais
- Division of Biology & Biological Engineering, California Institute of Technology, Pasadena, CA, USA
- Corresponding author. Division of Biology & Biological Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA. Tel: +1-626-395-8980;
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Zhang L, Xu H, Ding N, Li X, Chen X, Chen Z. Beneficial Effects on Brain Micro-Environment by Caloric Restriction in Alleviating Neurodegenerative Diseases and Brain Aging. Front Physiol 2021; 12:715443. [PMID: 34899367 PMCID: PMC8660583 DOI: 10.3389/fphys.2021.715443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 10/15/2021] [Indexed: 11/18/2022] Open
Abstract
Aging and neurodegenerative diseases are frequently associated with the disruption of the extracellular microenvironment, which includes mesenchyme and body fluid components. Caloric restriction (CR) has been recognized as a lifestyle intervention that can improve long-term health. In addition to preventing metabolic disorders, CR has been shown to improve brain health owing to its enhancing effect on cognitive functions or retarding effect on the progression of neurodegenerative diseases. This article summarizes current findings regarding the neuroprotective effects of CR, which include the modulation of metabolism, autophagy, oxidative stress, and neuroinflammation. This review may offer future perspectives for brain aging interventions.
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Affiliation(s)
- Li Zhang
- Key Laboratory of Central CNS Regeneration (Ministry of Education), Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, China.,Center for Brain Science and Brain-Inspired Intelligence, Guangdong-Hong Kong-Macao Greater Bay Area, Guangzhou, China.,Bioland Laboratory, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, China.,Neuroscience and Neurorehabilitation Institute, University of Health and Rehabilitation Sciences, Qingdao, China
| | - Huachong Xu
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Ning Ding
- Key Laboratory of Central CNS Regeneration (Ministry of Education), Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, China.,Medical College, Kunming University of Science and Technology, Kunming, China
| | - Xue Li
- School of Sports Medicine and Health, Chengdu Sport University, Chengdu, China
| | - Xiaoyin Chen
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Zhuangfei Chen
- Medical College, Kunming University of Science and Technology, Kunming, China
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Chen J, Zhang X, Fu M, Chen X, Pius BA, Xu X. Ultrasound-assisted covalent reaction of myofibrillar protein: The improvement of functional properties and its potential mechanism. ULTRASONICS SONOCHEMISTRY 2021; 76:105652. [PMID: 34182317 PMCID: PMC8251511 DOI: 10.1016/j.ultsonch.2021.105652] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/10/2021] [Accepted: 06/18/2021] [Indexed: 05/07/2023]
Abstract
The effects of the different combined manner of ultrasound and covalent reaction between polyphenol and myofibrillar protein (MP) from chicken were studied. More so, antioxidant activities, digestive properties, and potential mechanism of ultrasound-assisted oxidation system of hydrophilic ((-)-Epicatechin gallate, ECG) and hydrophobic (Baicalein, BN) polyphenols was also analyzed in this study. Among all the combined treatments, surface hydrophobicity (SUH), active sulfhydryl contents (ASC), and specific surface area (SSA) of ultrasonic assisted ECG oxidation group (T6) was relatively apparent, indicating that a more unfolding MP structure was obtained. Furthermore, ultrasonic assisted ECG oxidation group showed the highest antioxidant activities compared with other combined treatments on the basis of the results of DPPH free radical scavenging activities, metal ion chelating activities, and hydroxyl radicals (OH·) scavenging activities. The results of simulated digestion system and kinetic analysis also verified that ultrasonic assisted ECG oxidation had higher MP bio-accessibility than the control group. In contrast, a lower digestibility was displayed in ultrasonic assisted BN oxidation group. In summary, the ultrasound-assisted covalent reaction of MP and ECG might be a desirable approach for industrial production of MP from chicken with better antioxidant activities and digestive properties.
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Affiliation(s)
- Jiahui Chen
- Key Laboratory of Meat Processing, Ministry of Agriculture, Key Lab of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xing Zhang
- Department of Trauma and Reconstructive Surgery, RWTH Aachen University, Aachen 52074, Germany
| | - Mengying Fu
- School of Pharmaceutical Sciences, Xuzhou Medical University, Xuzhou 221002, China
| | - Xing Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Bassey Anthony Pius
- Key Laboratory of Meat Processing, Ministry of Agriculture, Key Lab of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xinglian Xu
- Key Laboratory of Meat Processing, Ministry of Agriculture, Key Lab of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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Altered Blood Levels of Anti-Gal Antibodies in Alzheimer's Disease: A New Clue to Pathogenesis? Life (Basel) 2021; 11:life11060538. [PMID: 34207559 PMCID: PMC8228012 DOI: 10.3390/life11060538] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/05/2021] [Accepted: 06/06/2021] [Indexed: 12/19/2022] Open
Abstract
Alzheimer’s disease is a neurodegenerative disorder whose pathological mechanisms, despite recent advances, are not fully understood. However, the deposition of beta amyloid -peptide and neuroinflammation, which is probably aggravated by dysbiotic microbiota, seem to play a key role. Anti-Gal are the most abundant xenoreactive natural antibodies. They are supposed to stem from immunization against the gut microbiota and have been implicated in the pathogenesis of several diseases, including multiple sclerosis. These antibodies target the alpha-Gal epitope, expressed on the terminal sugar units of glycoprotein or glycolipid of all mammals except apes, Old World monkeys and humans. The alpha-Gal is constitutively expressed in several bacteria constituting the brain microbiota, and alpha-Gal-like epitopes have been detected in gray matter, amyloid plaque, neurofibrillary tangles and corpora amylacea of the human brain, suggesting a potential link between anti-Gal and Alzheimer’s disease etiopathogenesis. For the first time, our study searched for possible alterations of anti-Gal immunoglobulin levels in Alzheimer’s disease patients. IgG and IgM blood levels were significantly lower, and IgA significantly higher in patients than in healthy subjects. These results suggest that such immunoglobulins might be implicated in Alzheimer’s disease pathogenesis and open new scenarios in the research for new biomarkers and therapeutic strategies.
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Wu S, Liu X, Jiang R, Yan X, Ling Z. Roles and Mechanisms of Gut Microbiota in Patients With Alzheimer's Disease. Front Aging Neurosci 2021; 13:650047. [PMID: 34122039 PMCID: PMC8193064 DOI: 10.3389/fnagi.2021.650047] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 04/30/2021] [Indexed: 12/11/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common age-related progressive neurodegenerative disease, characterized by a decline in cognitive function and neuronal loss, and is caused by several factors. Numerous clinical and experimental studies have suggested the involvement of gut microbiota dysbiosis in patients with AD. The altered gut microbiota can influence brain function and behavior through the microbiota–gut–brain axis via various pathways such as increased amyloid-β deposits and tau phosphorylation, neuroinflammation, metabolic dysfunctions, and chronic oxidative stress. With no current effective therapy to cure AD, gut microbiota modulation may be a promising therapeutic option to prevent or delay the onset of AD or counteract its progression. Our present review summarizes the alterations in the gut microbiota in patients with AD, the pathogenetic roles and mechanisms of gut microbiota in AD, and gut microbiota–targeted therapies for AD. Understanding the roles and mechanisms between gut microbiota and AD will help decipher the pathogenesis of AD from novel perspectives and shed light on novel therapeutic strategies for AD.
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Affiliation(s)
- Shaochang Wu
- Department of Geriatrics, Lishui Second People's Hospital, Lishui, China
| | - Xia Liu
- Department of Intensive Care Unit, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Ruilai Jiang
- Department of Geriatrics, Lishui Second People's Hospital, Lishui, China
| | - Xiumei Yan
- Department of Geriatrics, Lishui Second People's Hospital, Lishui, China
| | - Zongxin Ling
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Institute of Microbe & Host Health, Linyi University, Linyi, China
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Cheng Y, Liu J, Ling Z. Short-chain fatty acids-producing probiotics: A novel source of psychobiotics. Crit Rev Food Sci Nutr 2021; 62:7929-7959. [PMID: 33955288 DOI: 10.1080/10408398.2021.1920884] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Psychobiotics-live microorganisms with potential mental health benefits, which can modulate the microbiota-gut-brain-axis via immune, humoral, neural, and metabolic pathways-are emerging as novel therapeutic options for the effective treatment of psychiatric disorders Recently, microbiome studies have identified numerous putative psychobiotic strains, of which short-chain fatty acids (SCFAs) producing bacteria have attracted special attention from neurobiologists. Recent studies have highlighted that SCFAs-producing bacteria such as Lactobacillus, Bifidobacterium and Clostridium have a very specific function in various psychiatric disorders, suggesting that these bacteria can be potential novel psychobiotics. SCFAs, potential mediators of microbiota-gut-brain axis, might modulate function of neurological processes. While the specific roles and mechanisms of SCFAs-producing bacteria of microbiota-targeted interventions on neuropsychiatric disease are largely unknown. This Review summarizes existing knowledge on the neuroprotective effects of the SCFAs-producing bacteria in neurological disorders via modulating microbiota-gut-brain axis and illustrate their possible mechanisms by which SCFAs-producing bacteria may act on these disorders, which will shed light on the SCFAs-producing bacteria as a promising novel source of psychobiotics.
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Affiliation(s)
- Yiwen Cheng
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jiaming Liu
- Department of Preventive Medicine, School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zongxin Ling
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Institute of Microbe & Host Health, Linyi University, Linyi, Shandong, China
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49
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Lee JG, Cho HJ, Jeong YM, Lee JS. Genetic Approaches Using Zebrafish to Study the Microbiota-Gut-Brain Axis in Neurological Disorders. Cells 2021; 10:cells10030566. [PMID: 33807650 PMCID: PMC8002147 DOI: 10.3390/cells10030566] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/26/2021] [Accepted: 02/28/2021] [Indexed: 12/12/2022] Open
Abstract
The microbiota-gut-brain axis (MGBA) is a bidirectional signaling pathway mediating the interaction of the microbiota, the intestine, and the central nervous system. While the MGBA plays a pivotal role in normal development and physiology of the nervous and gastrointestinal system of the host, its dysfunction has been strongly implicated in neurological disorders, where intestinal dysbiosis and derived metabolites cause barrier permeability defects and elicit local inflammation of the gastrointestinal tract, concomitant with increased pro-inflammatory cytokines, mobilization and infiltration of immune cells into the brain, and the dysregulated activation of the vagus nerve, culminating in neuroinflammation and neuronal dysfunction of the brain and behavioral abnormalities. In this topical review, we summarize recent findings in human and animal models regarding the roles of the MGBA in physiological and neuropathological conditions, and discuss the molecular, genetic, and neurobehavioral characteristics of zebrafish as an animal model to study the MGBA. The exploitation of zebrafish as an amenable genetic model combined with in vivo imaging capabilities and gnotobiotic approaches at the whole organism level may reveal novel mechanistic insights into microbiota-gut-brain interactions, especially in the context of neurological disorders such as autism spectrum disorder and Alzheimer's disease.
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Affiliation(s)
- Jae-Geun Lee
- Disease Target Structure Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (J.-G.L.); (H.-J.C.); (Y.-M.J.)
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea
| | - Hyun-Ju Cho
- Disease Target Structure Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (J.-G.L.); (H.-J.C.); (Y.-M.J.)
| | - Yun-Mi Jeong
- Disease Target Structure Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (J.-G.L.); (H.-J.C.); (Y.-M.J.)
- Dementia DTC R&D Convergence Program, KIST, Hwarang-ro 14 gil 5, Seongbuk-gu, Seoul 02792, Korea
| | - Jeong-Soo Lee
- Disease Target Structure Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (J.-G.L.); (H.-J.C.); (Y.-M.J.)
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea
- Dementia DTC R&D Convergence Program, KIST, Hwarang-ro 14 gil 5, Seongbuk-gu, Seoul 02792, Korea
- Correspondence: ; Tel.: +82-42-860-4643
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50
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Wang X, Li Y, Wang Y, Liu Y, Xue C, Cong P, Xu J. Sea urchin gangliosides exhibit neuritogenic effects in neuronal PC12 cells via TrkA- and TrkB-related pathways. Biosci Biotechnol Biochem 2021; 85:675-686. [PMID: 33589896 DOI: 10.1093/bbb/zbaa088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 11/16/2020] [Indexed: 12/21/2022]
Abstract
Gangliosides (GLSs) are ubiquitously distributed in all tissues but highly enriched in nervous system. Currently, it is unclear how exogenous GLSs regulate neuritogenesis, although neural functions of endogenous GLSs are widely studied. Herein, we evaluated the neuritogenic activities and mechanism of sea urchin gangliosides (SU-GLSs) in vitro. These different glycosylated SU-GLSs, including GM4(1S), GD4(1S), GD4(2A), and GD4(2G), promoted differentiation of NGF-induced PC12 cells in a dose-dependent and structure-selective manner. Sulfate-type and disialo-type GLSs exhibited stronger neuritogenic effects than monosialoganglioside GM1. Furthermore, SU-GLSs might act as neurotrophic factors possessing neuritogenic effects, via targeting tyrosine-kinase receptors (TrkA and TrkB) and activating MEK1/2-ERK1/2-CREB and PI3K-Akt-CREB pathways. This activation resulted in increased expression and secretion of brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF). These pathways were verified by specific inhibitors. Our results confirmed the neuritogenic functions of SU-GLS in vitro and indicated their potential roles as natural nutrition for neuritogenesis.
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Affiliation(s)
- Xiaoxu Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong, People's Republic of China
| | - Yiyang Li
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong, People's Republic of China
| | - Yuliu Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong, People's Republic of China
| | - Yanjun Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong, People's Republic of China
| | - Changhu Xue
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong, People's Republic of China.,Laboratory of Marine Drugs and Biological Products, Pilot National Laboratory for Marine Science and Technology, Qingdao, Shandong, People's Republic of China
| | - Peixu Cong
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong, People's Republic of China
| | - Jie Xu
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong, People's Republic of China
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