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Li L, Yang C, Jia M, Wang Y, Zhao Y, Li Q, Gong J, He Y, Xu K, Liu X, Chen X, Hu J, Liu Z. Synbiotic therapy with Clostridium sporogenes and xylan promotes gut-derived indole-3-propionic acid and improves cognitive impairments in an Alzheimer's disease mouse model. Food Funct 2024. [PMID: 38967039 DOI: 10.1039/d4fo00886c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized primarily by cognitive impairment. Recent investigations have highlighted the potential of nutritional interventions that target the gut-brain axis, such as probiotics and prebiotics, in forestalling the onset of AD. In this study, whole-genome sequencing was employed to identify xylan as the optimal carbon source for the tryptophan metabolism regulating probiotic Clostridium sporogenes (C. sporogenes). Subsequent in vivo studies demonstrated that administration of a synbiotic formulation comprising C. sporogenes (1 × 1010 CFU per day) and xylan (1%, w/w) over a duration of 30 days markedly enhanced cognitive performance and spatial memory faculties in the 5xFAD transgenic AD mouse model. The synbiotic treatment significantly reduced amyloid-β (Aβ) accumulation in the cortex and hippocampus of the brain. Importantly, synbiotic therapy substantially restored the synaptic ultrastructure in AD mice and suppressed neuroinflammatory responses. Moreover, the intervention escalated levels of the microbial metabolite indole-3-propionic acid (IPA) and augmented the relative prevalence of IPA-synthesizing bacteria, Lachnospira and Clostridium, while reducing the dominant bacteria in AD, such as Aquabacterium, Corynebacterium, and Romboutsia. Notably, synbiotic treatment also prevented the disruption of gut barrier integrity. Correlation analysis indicated a strong positive association between gut microbiota-generated IPA levels and behavioral changes. In conclusion, this study demonstrates that synbiotic supplementation significantly improves cognitive and intellectual deficits in 5xFAD mice, which could be partly attributed to enhanced IPA production by gut microbiota. These findings provide a theoretical basis for considering synbiotic therapy as a novel microbiota-targeted approach for the treatment of metabolic and neurodegenerative diseases.
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Affiliation(s)
- Ling Li
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Cong Yang
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Mengzhen Jia
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yuhao Wang
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yu Zhao
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qingyuan Li
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jun Gong
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ying He
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Kun Xu
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Xuebo Liu
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xuhui Chen
- Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518004, China
| | - Jun Hu
- Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518004, China
| | - Zhigang Liu
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
- Northwest A&F University Shenzhen Research Institute, Shenzhen, Guangdong, 518000, China
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Santamaría-García H, Migeot J, Medel V, Hazelton JL, Teckentrup V, Romero-Ortuno R, Piguet O, Lawor B, Northoff G, Ibanez A. Allostatic interoceptive overload across psychiatric and neurological conditions. Biol Psychiatry 2024:S0006-3223(24)01428-8. [PMID: 38964530 DOI: 10.1016/j.biopsych.2024.06.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 06/10/2024] [Accepted: 06/19/2024] [Indexed: 07/06/2024]
Abstract
Emerging theories emphasize the crucial role of allostasis (anticipatory and adaptive regulation of the body's biological processes) and interoception (integration, anticipation, and regulation of internal bodily states) in adjusting physiological responses to environmental and bodily demands. This review explores the disruptions in integrated allostatic interoceptive mechanisms in psychiatric and neurological disorders, including anxiety, depression, Alzheimer's disease, and frontotemporal dementia. We assess the biological mechanisms associated with allostatic interoception, including whole-body cascades, brain structure and function of the allostatic interoceptive network, heart-brain interactions, respiratory-brain interactions, the gut-brain-microbiota axis, peripheral biological processes (inflammatory, immune), and epigenetic pathways. These processes span psychiatric and neurological conditions and call for developing dimensional and trans-nosological frameworks. We synthesize new pathways to understand how allostatic interoceptive processes modulate interactions between environmental demands and biological functions in brain disorders. We discuss current limitations of the framework and future transdisciplinary developments. This review opens a new research agenda for understanding how allostatic interoception involves brain predictive coding in psychiatry and neurology, allowing for better clinical application and the development of new therapeutic interventions.
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Affiliation(s)
- Hernando Santamaría-García
- Pontificia Universidad Javeriana, PhD program of Neuroscience, Bogotá, Colombia; Hospital Universitario San Ignacio, Centro de Memoria y Cognición Intellectus, Bogotá, Colombia
| | - Joaquin Migeot
- Global Brain Health Institute, University California of San Francisco, Trinity College of Dublin; Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibanez, Santiago de Chile
| | - Vicente Medel
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibanez, Santiago de Chile
| | - Jessica L Hazelton
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibanez, Santiago de Chile; The University of Sydney, School of Psychology and Brain & Mind Centre, Sydney, Australia
| | - Vanessa Teckentrup
- School of Psychology and Trinity Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Roman Romero-Ortuno
- Pontificia Universidad Javeriana, PhD program of Neuroscience, Bogotá, Colombia; Discipline of Medical Gerontology, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Olivier Piguet
- The University of Sydney, School of Psychology and Brain & Mind Centre, Sydney, Australia
| | - Brian Lawor
- Pontificia Universidad Javeriana, PhD program of Neuroscience, Bogotá, Colombia
| | - George Northoff
- Institute of Mental Health Research, Mind, Brain Imaging and Neuroethics Research Unit, University of Ottawa, Ottawa, Canada
| | - Agustin Ibanez
- Global Brain Health Institute, University California of San Francisco, Trinity College of Dublin; Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibanez, Santiago de Chile; School of Psychology and Trinity Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.
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3
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Gómez García AM, García-Rico E. Influence of Healthcare Delivery Type on Patients' Mental Health: Is Hospitalization Always a Stressful Factor? Can Allostatic Load Help Assess a Patient's Psychological Disorders? Clin Pract 2024; 14:995-1009. [PMID: 38921257 PMCID: PMC11202436 DOI: 10.3390/clinpract14030079] [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: 04/18/2024] [Revised: 05/20/2024] [Accepted: 05/29/2024] [Indexed: 06/27/2024] Open
Abstract
BACKGROUND Psychological distress is a predictor of future health and disease data, with consequent implications for both the patient and the healthcare system. Taking advantage of the unprecedented situation caused by the COVID-19 pandemic we aimed to assess whether the type of medical care received by patients during the initial months of the pandemic influenced their evolution, particularly at the psychological level. Additionally, we investigated whether allostatic load was associated not only with physical but also psychological alterations. METHODS All the patients diagnosed with COVID-19 infection at HM Madrid Hospital during the month of March 2020 were studied, both those hospitalized (110) and those treated on an outpatient basis (46). They were psychologically evaluated using the Profile of Mood States (POMS) test. We calculated the allostatic load using different laboratory parameters. RESULTS Outpatient patients had significantly higher scores than hospitalized ones in Tension-Anxiety (52 ± 19.3 vs. 38 ± 4.3; p < 0.001). So, 36.9% of the outpatient patients exhibited anxiety. Allostatic load has not been correlated with patients' psychological alterations. CONCLUSIONS Psychological distress of outpatient patients should be taken into account in their management to improve mental health planning. This knowledge could provide comprehensive care to patients including their mental health, in the face of subsequent epidemics/pandemics.
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Affiliation(s)
- Ana María Gómez García
- Internal Medicine Unit, Hospital Universitario HM Madrid, 28015 Madrid, Spain
- Facultad HM de Ciencias de la Salud de la Universidad Camilo José Cela, 28010 Madrid, Spain
| | - Eduardo García-Rico
- Facultad HM de Ciencias de la Salud de la Universidad Camilo José Cela, 28010 Madrid, Spain
- Medical Oncology Unit, Hospital Universitario HM Torrelodones, 28250 Madrid, Spain
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Franco-O'Byrne D, Santamaría-García H, Migeot J, Ibáñez A. Emerging Theories of Allostatic-Interoceptive Overload in Neurodegeneration. Curr Top Behav Neurosci 2024. [PMID: 38637414 DOI: 10.1007/7854_2024_471] [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: 04/20/2024]
Abstract
Recent integrative multilevel models offer novel insights into the etiology and course of neurodegenerative conditions. The predictive coding of allostatic-interoception theory posits that the brain adapts to environmental demands by modulating internal bodily signals through the allostatic-interoceptive system. Specifically, a domain-general allostatic-interoceptive network exerts adaptive physiological control by fine-tuning initial top-down predictions and bottom-up peripheral signaling. In this context, adequate adaptation implies the minimization of prediction errors thereby optimizing energy expenditure. Abnormalities in top-down interoceptive predictions or peripheral signaling can trigger allostatic overload states, ultimately leading to dysregulated interoceptive and bodily systems (endocrine, immunological, circulatory, etc.). In this context, environmental stress, social determinants of health, and harmful exposomes (i.e., the cumulative life-course exposition to different environmental stressors) may interact with physiological and genetic factors, dysregulating allostatic interoception and precipitating neurodegenerative processes. We review the allostatic-interoceptive overload framework across different neurodegenerative diseases, particularly in the behavioral variant frontotemporal dementia (bvFTD). We describe how concepts of allostasis and interoception could be integrated with principles of predictive coding to explain how the brain optimizes adaptive responses, while maintaining physiological stability through feedback loops with multiple organismic systems. Then, we introduce the model of allostatic-interoceptive overload of bvFTD and discuss its implications for the understanding of pathophysiological and neurocognitive abnormalities in multiple neurodegenerative conditions.
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Affiliation(s)
- Daniel Franco-O'Byrne
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibáñez, Santiago, Chile
| | - Hernando Santamaría-García
- Global Brain Health Institute, University of California-San Francisco, San Francisco, CA, USA
- Trinity College Dublin, Dublin, Ireland
- Department of Psychiatry, Pontificia Universidad Javeriana, Bogotá, Colombia
- Center of Memory and Cognition Intellectus, Hospital Universitario San Ignacio, Bogotá, Colombia
| | - Joaquín Migeot
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibáñez, Santiago, Chile
| | - Agustín Ibáñez
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile.
- Global Brain Health Institute, University of California-San Francisco, San Francisco, CA, USA.
- Trinity College Dublin, Dublin, Ireland.
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés, Buenos Aires, Argentina.
- Trinity College Institute of Neuroscience (TCIN), Trinity College Dublin, Dublin, Ireland.
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Scuto M, Rampulla F, Reali GM, Spanò SM, Trovato Salinaro A, Calabrese V. Hormetic Nutrition and Redox Regulation in Gut-Brain Axis Disorders. Antioxidants (Basel) 2024; 13:484. [PMID: 38671931 PMCID: PMC11047582 DOI: 10.3390/antiox13040484] [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: 02/29/2024] [Revised: 04/09/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
The antioxidant and anti-inflammatory effects of hormetic nutrition for enhancing stress resilience and overall human health have received much attention. Recently, the gut-brain axis has attracted prominent interest for preventing and therapeutically impacting neuropathologies and gastrointestinal diseases. Polyphenols and polyphenol-combined nanoparticles in synergy with probiotics have shown to improve gut bioavailability and blood-brain barrier (BBB) permeability, thus inhibiting the oxidative stress, metabolic dysfunction and inflammation linked to gut dysbiosis and ultimately the onset and progression of central nervous system (CNS) disorders. In accordance with hormesis, polyphenols display biphasic dose-response effects by activating at a low dose the Nrf2 pathway resulting in the upregulation of antioxidant vitagenes, as in the case of heme oxygenase-1 upregulated by hidrox® or curcumin and sirtuin-1 activated by resveratrol to inhibit reactive oxygen species (ROS) overproduction, microbiota dysfunction and neurotoxic damage. Importantly, modulation of the composition and function of the gut microbiota through polyphenols and/or probiotics enhances the abundance of beneficial bacteria and can prevent and treat Alzheimer's disease and other neurological disorders. Interestingly, dysregulation of the Nrf2 pathway in the gut and the brain can exacerbate selective susceptibility under neuroinflammatory conditions to CNS disorders due to the high vulnerability of vagal sensory neurons to oxidative stress. Herein, we aimed to discuss hormetic nutrients, including polyphenols and/or probiotics, targeting the Nrf2 pathway and vitagenes for the development of promising neuroprotective and therapeutic strategies to suppress oxidative stress, inflammation and microbiota deregulation, and consequently improve cognitive performance and brain health. In this review, we also explore interactions of the gut-brain axis based on sophisticated and cutting-edge technologies for novel anti-neuroinflammatory approaches and personalized nutritional therapies.
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Affiliation(s)
- Maria Scuto
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95124 Catania, Italy; (F.R.); (G.M.R.); (S.M.S.); (V.C.)
| | | | | | | | - Angela Trovato Salinaro
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95124 Catania, Italy; (F.R.); (G.M.R.); (S.M.S.); (V.C.)
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Li W, Jiang J, Yin X, Zhang Y, Zou X, Sun M, Jia J, Ma B, Xu J. Mediation of Regional Cerebral Blood Flow in the Relationship between Specific Gut Microbiota and Cognition in Vascular Cognitive Impairment. J Alzheimers Dis 2024; 97:435-445. [PMID: 38108351 DOI: 10.3233/jad-230709] [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] [Indexed: 12/19/2023]
Abstract
BACKGROUND Gut microbiota could affect the onset and development of vascular cognitive impairment (VCI) through modulating metabolic and immune pathways. However, the vascular mechanisms involved remain unclear. OBJECTIVE To investigate the gut microbiota associated with VCI and examine the mediating effects of regional cerebral blood flow (CBF) to explore potential therapeutic targets for VCI. METHODS This prospective study enrolled patients with VCI (n = 16) and healthy controls (n = 18) from the Chinese Imaging, Biomarkers, and Lifestyle study between January 1 and June 30, 2022. The gut microbiota composition and diversity were determined by 16 S ribosomal RNA gene sequencing. The association between gut microbiota and Montreal Cognitive Assessment (MoCA) scores was determined using Spearman's correlation analysis. Regional CBF was calculated using pseudo-continuous arterial spin labeling. The mediating effects of regional CBF on the relationship between specific gut microbiota and cognition in VCI were investigated using mediation analysis. RESULTS Compared to healthy controls, patients with VCI had significantly greater abundance of Bifidobacterium, Veillonella, R uminococcus gnavus , Fusobacterium, and Erysipelatoclostridium and smaller abundance of Collinsella. The abundance of Ruminococcus gnavus was negatively associated with MoCA scores in patients with VCI, with the CBF in the left hypothalamus, right hypothalamus, and left amygdala accounting for 63.96%, 48.22%, and 36.51%, respectively, of this association after adjusting for confounders. CONCLUSIONS Ruminococcus gnavus is associated with cognition in VCI, which is strongly mediated by CBF in the bilateral hypothalamus and left amygdala. These findings highlight the potential regulatory roles of nutrition and metabolism-related areas of the brain in VCI.
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Affiliation(s)
- Wenyi Li
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Jiwei Jiang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | | | - Yuan Zhang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Xinying Zou
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Mengfan Sun
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Jianjun Jia
- Department of Geriatric Neurology, The Second Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Baiping Ma
- Beijing Institute of Radiation Medicine, Beijing, China
| | - Jun Xu
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
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Chen X, Wang M, Yu K, Xu S, Qiu P, Lyu Z, Zhang X, Xu Y. Chronic stress-induced immune dysregulation in breast cancer: Implications of psychosocial factors. J Transl Int Med 2023; 11:226-233. [PMID: 37662890 PMCID: PMC10474889 DOI: 10.2478/jtim-2021-0050] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Chronic stress refers to continuous emotional changes and psychological pressure that individuals experience when they are unable to adjust and stabilize the internal environment over an extended period. It can increase the pressure on endocrine mediators and cytokines in the circulation, as well as tissues throughout the hypothalamic-pituitary-adrenaline (HPA) axis and sympathetic nervous system (SNS); thus, evolving the internal environment of the tumor. This review assesses several key issues, involving psychosocial factors, and integrates clinical, cellular, and molecular studies-as well as the latest research progress-to provide a mechanistic understanding regarding breast oncopsychology. We propose that chronic stress contributes to large individual diferences in the prognosis of breast cancer survivors because they change the basic physiological processes of the endocrine and immune systems, which in turn regulate tumor growth. The study of psychological and physiological reactions of breast cancer patients suggests a new idea for psychological intervention and clinical treatment for breast cancer patients.
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Affiliation(s)
- Xiuyun Chen
- Department of Breast Surgery, the First Affiliated Hospital of China Medical University, Shenyang110001, Liaoning Province, China
| | - Mozhi Wang
- Department of Breast Surgery, the First Affiliated Hospital of China Medical University, Shenyang110001, Liaoning Province, China
| | - Keda Yu
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, 270 Dong-An Road, Shanghai200032, China
| | - Shouping Xu
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin150081, Heilongjiang Province, China
| | - Pengfei Qiu
- Breast Cancer Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Science, Jinan250117, Shandong Province, China
| | - Zhidong Lyu
- Breast Center, The Affiliated Hospital of Qingdao University, Qingdao266005, Shandong Province, China
| | - Xinwen Zhang
- Center of Implant Dentistry, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease, Shenyang110122, Liaoning Province, China
| | - Yingying Xu
- Department of Breast Surgery, the First Affiliated Hospital of China Medical University, Shenyang110001, Liaoning Province, China
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8
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Jeanneteau F. Stress and the risk of Alzheimer dementia: Can deconstructed engrams be rebuilt? J Neuroendocrinol 2023; 35:e13235. [PMID: 36775895 DOI: 10.1111/jne.13235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/20/2023] [Accepted: 01/21/2023] [Indexed: 01/26/2023]
Abstract
The exact neuropathological mechanism by which the dementia process unfolds is under intense scrutiny. The disease affects about 38 million people worldwide, 70% of which are clinically diagnosed with Alzheimer's disease (AD). If the destruction of synapses essential for learning, planning and decision-making is part of the problem, must the restoration of previously lost synapses be part of the solution? It is plausible that neuronal capacity to restitute information corresponds with the adaptive capacity of its connectivity reserve. A challenge will be to promote the functional connectivity that can compensate for the lost one. This will require better clarification of the remodeling of functional connectivity during the progression of AD dementia and its reversal upon experimental treatment. A major difficulty is to promote the neural pathways that are atrophied in AD dementia while suppressing others that are bolstered. Therapeutic strategies should aim at scaling functional connectivity to a just balance between the atrophic and hypertrophic systems. However, the exact factors that can help reach this objective are still unclear. Similarities between the effects of chronic stress and some neuropathological mechanisms underlying AD dementia support the idea that common components deserve prime attention as therapeutic targets.
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Affiliation(s)
- Freddy Jeanneteau
- Institut de génomique fonctionnelle, Université de Montpellier, INSERM, CNRS, Montpellier, France
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9
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Zou B, Li J, Ma RX, Cheng XY, Ma RY, Zhou TY, Wu ZQ, Yao Y, Li J. Gut Microbiota is an Impact Factor based on the Brain-Gut Axis to Alzheimer's Disease: A Systematic Review. Aging Dis 2023; 14:964-1678. [PMID: 37191418 DOI: 10.14336/ad.2022.1127] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 11/27/2022] [Indexed: 05/17/2023] Open
Abstract
Alzheimer's disease (AD) is a degenerative disease of the central nervous system. The pathogenesis of AD has been explained using cholinergic, β-amyloid toxicity, tau protein hyperphosphorylation, and oxidative stress theories. However, an effective treatment method has not been developed. In recent years, with the discovery of the brain-gut axis (BGA) and breakthroughs made in Parkinson's disease, depression, autism, and other diseases, BGA has become a hotspot in AD research. Several studies have shown that gut microbiota can affect the brain and behavior of patients with AD, especially their cognitive function. Animal models, fecal microbiota transplantation, and probiotic intervention also provide evidence regarding the correlation between gut microbiota and AD. This article discusses the relationship and related mechanisms between gut microbiota and AD based on BGA to provide possible strategies for preventing or alleviating AD symptoms by regulating gut microbiota.
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Affiliation(s)
- Bin Zou
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Jia Li
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Rui-Xia Ma
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Xiao-Yu Cheng
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Rui-Yin Ma
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Ting-Yuan Zhou
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Zi-Qi Wu
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Yao Yao
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
| | - Juan Li
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
- Ningxia Engineering and Technology Research Center for Modernization of Characteristic Chinese Medicine, and Key Laboratory of Ningxia Ethnomedicine Modernization, Ministry of Education, Ningxia Medical University, Yinchuan 750004, China
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10
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Human microbiome collection. Sci Rep 2023; 13:3807. [PMID: 36890166 PMCID: PMC9995334 DOI: 10.1038/s41598-023-30625-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023] Open
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11
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Mundula T, Russo E, Curini L, Giudici F, Piccioni A, Franceschi F, Amedei A. Chronic systemic low-grade inflammation and modern lifestyle: the dark role of gut microbiota on related diseases with a focus on pandemic COVID-19. Curr Med Chem 2022; 29:5370-5396. [PMID: 35524667 DOI: 10.2174/0929867329666220430131018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/01/2022] [Accepted: 02/23/2022] [Indexed: 12/12/2022]
Abstract
Inflammation is a physiological, beneficial and auto-limiting response of the host to alarming stimuli. Conversely, a chronic systemic low-grade inflammation (CSLGI), known as a long-time persisting condition, causes organs and host tissues' damage, representing a major risk for chronic diseases. Currently, a worldwide a high incidence of inflammatory chronic diseases is observed, often linked to the lifestyle-related changes occurred in the last decade's society. The mains lifestyle-related factors are a proinflammatory diet, psychological stress, tobacco smoking, alcohol abuse, physical inactivity, and finally indoor living and working with its related consequences such as indoor pollution, artificial light exposure and low vitamin D production. Recent scientific evidences found that gut microbiota (GM) has a main role in shaping the host's health, particularly as CSLGI mediator. As a matter of facts, based on the last discoveries regarding the remarkable GM activity, in this manuscript we focused on the elements of actual lifestyle that influence the composition and function of intestinal microbial community, in order to elicit the CSLGI and its correlated pathologies. In this scenario, we provide a broad review of the interplay between modern lifestyle, GM and CSLGI with a special focus on the COVID symptoms and emerging long-COVID syndrome.
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Affiliation(s)
- Tiziana Mundula
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Edda Russo
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Lavinia Curini
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Francesco Giudici
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Andrea Piccioni
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Francesco Franceschi
- Emergency Department, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
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Sexton CE, Anstey KJ, Baldacci F, Barnum CJ, Barron AM, Blennow K, Brodaty H, Burnham S, Elahi FM, Götz J, Jeon YH, Koronyo-Hamaoui M, Landau SM, Lautenschlager NT, Laws SM, Lipnicki DM, Lu H, Masters CL, Moyle W, Nakamura A, Pasinetti GM, Rao N, Rowe C, Sachdev PS, Schofield PR, Sigurdsson EM, Smith K, Srikanth V, Szoeke C, Tansey MG, Whitmer R, Wilcock D, Wong TY, Bain LJ, Carrillo MC. Alzheimer's disease research progress in Australia: The Alzheimer's Association International Conference Satellite Symposium in Sydney. Alzheimers Dement 2022; 18:178-190. [PMID: 34058063 PMCID: PMC9396711 DOI: 10.1002/alz.12380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 01/03/2023]
Abstract
The Alzheimer's Association International Conference held its sixth Satellite Symposium in Sydney, Australia in 2019, highlighting the leadership of Australian researchers in advancing the understanding of and treatment developments for Alzheimer's disease (AD) and other dementias. This leadership includes the Australian Imaging, Biomarker, and Lifestyle Flagship Study of Ageing (AIBL), which has fueled the identification and development of many biomarkers and novel therapeutics. Two multimodal lifestyle intervention studies have been launched in Australia; and Australian researchers have played leadership roles in other global studies in diverse populations. Australian researchers have also played an instrumental role in efforts to understand mechanisms underlying vascular contributions to cognitive impairment and dementia; and through the Women's Healthy Aging Project have elucidated hormonal and other factors that contribute to the increased risk of AD in women. Alleviating the behavioral and psychological symptoms of dementia has also been a strong research and clinical focus in Australia.
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Affiliation(s)
| | - Kaarin J. Anstey
- University of New South Wales and Neuroscience Research, Sydney, NSW, Australia
| | - Filippo Baldacci
- Unit of Neurology, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
- GRC n° 21, Alzheimer Precision Medicine (APM), AP-HP, Pitié-Salpêtrière Hospital, Sorbonne University, Paris, France
| | | | - Anna M. Barron
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Singapore, Singapore
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
| | - Henry Brodaty
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, NSW, Australia
| | - Samantha Burnham
- CSIRO Health & Biosecurity, The Australian e-Health Research Centre, Parkville, VIC, Australia
| | - Fanny M. Elahi
- Memory and Aging Center, Weill Institute for NeurosciencesUniversity of California San Francisco, San Francisco, California, USA
| | - Jürgen Götz
- Clem Jones Centre for Ageing Dementia Research (CJCADR), Queensland Brain Institute (QBI), The University of Queensland, St Lucia Campus (Brisbane), Brisbane, QLD, Australia
| | - Yun-Hee Jeon
- The University of Sydney, Sydney, NSW, Australia
| | - Maya Koronyo-Hamaoui
- Departments of Neurosurgery and Biomedical Sciences, Maxine Dunitz Neurosurgical Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Susan M. Landau
- University of California Berkeley, Berkeley, California, USA
| | - Nicola T. Lautenschlager
- Academic Unit for Psychiatry of Old Age, Department of Psychiatry, The University of Melbourne, Melbourne, VIC, Australia
- North Western Mental Health, Royal Melbourne Hospital, Melbourne, Australia
| | - Simon M. Laws
- Collaborative Genomics and Translation Group, Edith Cowan University, Joondalup, WA, Australia
| | - Darren M. Lipnicki
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, NSW, Australia
| | - Hanzhang Lu
- Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Colin L. Masters
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Wendy Moyle
- Menzies Health Institute Queensland, Griffith University, Griffith, QLD, Australia
| | - Akinori Nakamura
- Department of Biomarker Research, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Giulio Maria Pasinetti
- Department of Neurology, Icahn School of Medicine at Mount Sinai (ISSMS), New York, New York, USA
| | - Naren Rao
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, India
| | - Christopher Rowe
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
- Department of Molecular Imaging, Austin Health, Melbourne, VIC, Australia
| | - Perminder S. Sachdev
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, NSW, Australia
- Neuropsychiatric Institute, Prince of Wales Hospital, Sydney, NSW, Australia
| | - Peter R. Schofield
- Neuroscience Research Australia, Sydney and School of Medical Sciences, UNSW Sydney, Sydney, NSW, Australia
| | - Einar M. Sigurdsson
- Departments of Neuroscience and Physiology, and Psychiatry, Neuroscience Institute, New York University Grossman School of Medicine, New York, New York, USA
| | - Kate Smith
- Centre for Aboriginal Medical and Dental Health, University of Western Australia, Crawley, WA, Australia
| | - Velandai Srikanth
- Peninsula Clinical School, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | | | - Malú G. Tansey
- Departments of Neuroscience and Neurology, Center for Translational Research in Neurodegenerative Disease, Normal Fixel Center for Neurological Diseases, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Rachel Whitmer
- Department of Public Health Sciences, University of California, Davis, Davis, California, USA
| | - Donna Wilcock
- Sanders-Brown Center on Aging and Department of Physiology, University of Kentucky College of Medicine, Lexington, Kentucky, USA
| | - Tien Y. Wong
- Singapore Eye Research Institute, Singapore National Eye Center, Duke-NUS Medical School, National University of Singapore, Singapore, Singapore
| | - Lisa J. Bain
- Independent Science Writer, Elverson, Pennsylvania, USA
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Pappolla MA, Perry G, Fang X, Zagorski M, Sambamurti K, Poeggeler B. Indoles as essential mediators in the gut-brain axis. Their role in Alzheimer's disease. Neurobiol Dis 2021; 156:105403. [PMID: 34087380 DOI: 10.1016/j.nbd.2021.105403] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 05/05/2021] [Accepted: 05/21/2021] [Indexed: 02/07/2023] Open
Abstract
Sporadic late-onset Alzheimer's disease (AD) is the most frequent cause of dementia associated with aging. Due to the progressive aging of the population, AD is becoming a healthcare burden of unprecedented proportions. Twenty years ago, it was reported that some indole molecules produced by the gut microbiota possess essential biological activities, including neuroprotection and antioxidant properties. Since then, research has cemented additional characteristics of these substances, including anti-inflammatory, immunoregulatory, and amyloid anti-aggregation features. Herein, we summarize the evidence supporting an integrated hypothesis that some of these substances can influence the age of onset and progression of AD and are central to the symbiotic relationship between intestinal microbes and the brain. Studies have shown that some of these substances' activities result from interactions with biologically conserved pathways and with genetic risk factors for AD. By targeting multiple pathologic mechanisms simultaneously, certain indoles may be excellent candidates to ameliorate neurodegeneration. We propose that management of the microbiota to induce a higher production of neuroprotective indoles (e.g., indole propionic acid) will promote brain health during aging. This area of research represents a new therapeutic paradigm that could add functional years of life to individuals who would otherwise develop dementia.
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Affiliation(s)
- Miguel A Pappolla
- University of Texas Medical Branch, Department of Neurology, Galveston, TX, United States of America.
| | - George Perry
- University of Texas at San Antonio, Department of Biology, San Antonio, TX, United States of America
| | - Xiang Fang
- University of Texas Medical Branch, Department of Neurology, Galveston, TX, United States of America
| | - Michael Zagorski
- Case Western Reserve University, Department of Chemistry, Cleveland, United States of America
| | - Kumar Sambamurti
- Medical University of South Carolina, Department of Neurobiology, Charleston, SC, United States of America
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14
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A multispecies probiotic accelerates fear extinction and inhibits relapse in mice: Role of microglia. Neuropharmacology 2021; 193:108613. [PMID: 34022177 DOI: 10.1016/j.neuropharm.2021.108613] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 05/12/2021] [Accepted: 05/12/2021] [Indexed: 11/22/2022]
Abstract
The relapse of fear memory remains a clinical challenge in treatment of fear-related disorders. Here we tested the effects and underlying mechanisms of probiotics treatment after fear conditioning on fear extinction. We found that fear conditioning induced synapse loss, microglial activation, and synaptic phagocytosis of activated microglial cells in hippocampal dentate gyrus of mice. And probiotics treatment (1 capsule/day/mice) after fear conditioning for 27 days inhibited these changes, promoted fear extinction, and inhibited the recovery of fear memory even 7 days after extinction. 16S rRNA gene sequencing demonstrated that probiotics supplement after fear conditioning partially normalized fear conditioning-induced dysbiosis of gut microbiota. In addition, we also found that repopulation of microglial cells in fear conditioning mice via PLX3397 treatment promoted long-term extinction of fear memory. Probiotics treatment after fear conditioning inhibited microglial activation and had similar therapeutic effects as the microglial cell repopulation induced by PLX3397 treatment. These data showed that (1) probiotics treatment after fear conditioning might promote long-term fear extinction which could be associated with the mitigation of synaptic pruning of activated microglial cells; (2) probiotics may be applicable as therapeutic strategy to inhibit microglial activation and treat fear-related disorders.
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15
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Westfall S, Dinh DM, Pasinetti GM. Investigation of Potential Brain Microbiome in Alzheimer's Disease: Implications of Study Bias. J Alzheimers Dis 2021; 75:559-570. [PMID: 32310171 DOI: 10.3233/jad-191328] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Dysbiotic microbiota in the gastrointestinal tract promotes and aggravates neurodegenerative disorders. Alzheimer's disease (AD) has been shown to correlate to dysbiotic bacteria and the immune, metabolic, and endocrine abnormalities associated with abnormal gut-brain-axis signaling. Recent reports also indicate that brain dysbacteriosis may play a role in AD pathogenesis. OBJECTIVE To evaluate the presence and differences of brain-region dependent microbiomes in control and AD subjects and the contribution of study bias. METHODS Two independent cohorts of postmortem AD brain samples were collected from separate locations, processed with different extraction protocols and investigated for the presence of bacterial DNA indicative of a brain microbiome with V4 16S next generation sequencing. RESULTS In both cohorts, few differences between the control and AD groups were observed in terms of alpha and beta diversities, phyla and genera proportions. Independent of study in both AD and control subjects the most abundant phyla were Proteobacteria, Firmicutes, Actinobacteria, and Bacteroidetes. Variations in beta diversity between hippocampal and cerebellum samples were observed indicating an impact of brain region on the presence of microbial DNA. Importantly, differences in alpha and beta diversities between the two independent cohorts were found indicating a significant cohort- and processing-dependent effect on the microbiome. Finally, there were cohort-specific correlations between the gut microbiome and subject demographics indicate that postmortem interval may have a significant impact on brain microbiome determination. CONCLUSIONS Regardless of the study bias, this study concludes that bacterial DNA can be isolated from the human brain suggesting that a brain microbiome may exist; however, more studies are required to understand the variation in AD.
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Affiliation(s)
- Susan Westfall
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Giulio Maria Pasinetti
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Geriatric Research, Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA
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16
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Molina B, Mastroianni J, Suarez E, Soni B, Forsberg E, Finley K. Treatment with Bacterial Biologics Promotes Healthy Aging and Traumatic Brain Injury Responses in Adult Drosophila, Modeling the Gut-Brain Axis and Inflammation Responses. Cells 2021; 10:900. [PMID: 33919883 PMCID: PMC8070821 DOI: 10.3390/cells10040900] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/23/2021] [Accepted: 04/08/2021] [Indexed: 12/29/2022] Open
Abstract
Drosophila are widely used to study neural development, immunity, and inflammatory pathways and processes associated with the gut-brain axis. Here, we examine the response of adult Drosophila given an inactive bacteriologic (IAB; proprietary lysate preparation of Lactobacillus bulgaricus, ReseT®) and a probiotic (Lactobacillus rhamnosus, LGG). In vitro, the IAB activates a subset of conserved Toll-like receptor (TLR) and nucleotide-binding, oligomerization domain-containing protein (NOD) receptors in human cells, and oral administration slowed the age-related decline of adult Drosophila locomotor behaviors. On average, IAB-treated flies lived significantly longer (+23%) and had lower neural aggregate profiles. Different IAB dosages also improved locomotor function and longevity profiles after traumatic brain injury (TBI) exposure. Mechanistically, short-term IAB and LGG treatment altered baseline nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κβ) signaling profiles in neural and abdominal tissues. Overall, at select dosages, IAB and LGG exposure has a positive impact on Drosophila longevity, neural aging, and mild traumatic brain injury (TBI)-related responses, with IAB showing greater benefit. This includes severe TBI (sTBI) responses, where IAB treatment was protective and LGG increased acute mortality profiles. This work shows that Drosophila are an effective model for testing bacterial-based biologics, that IAB and probiotic treatments promote neuronal health and influence inflammatory pathways in neural and immune tissues. Therefore, targeted IAB treatments are a novel strategy to promote the appropriate function of the gut-brain axis.
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Affiliation(s)
- Brandon Molina
- Department of Biology, Shiley BioScience Center, San Diego State University, San Diego, CA 92182, USA; (B.M.); (J.M.); (E.S.)
| | - Jessica Mastroianni
- Department of Biology, Shiley BioScience Center, San Diego State University, San Diego, CA 92182, USA; (B.M.); (J.M.); (E.S.)
| | - Ema Suarez
- Department of Biology, Shiley BioScience Center, San Diego State University, San Diego, CA 92182, USA; (B.M.); (J.M.); (E.S.)
| | - Brijinder Soni
- Department Chemistry and Biohemistry, San Diego State University, San Diego, CA 92182, USA; (B.S.); (E.F.)
| | - Erica Forsberg
- Department Chemistry and Biohemistry, San Diego State University, San Diego, CA 92182, USA; (B.S.); (E.F.)
| | - Kim Finley
- Department of Biology, Shiley BioScience Center, San Diego State University, San Diego, CA 92182, USA; (B.M.); (J.M.); (E.S.)
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17
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Cui B, Peng F, Lu J, He B, Su Q, Luo H, Deng Z, Jiang T, Su K, Huang Y, Ud Din Z, Lam EWF, Kelley KW, Liu Q. Cancer and stress: NextGen strategies. Brain Behav Immun 2021; 93:368-383. [PMID: 33160090 DOI: 10.1016/j.bbi.2020.11.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 10/17/2020] [Accepted: 11/01/2020] [Indexed: 12/12/2022] Open
Abstract
Chronic stress is well-known to cause physiological distress that leads to body balance perturbations by altering signaling pathways in the neuroendocrine and sympathetic nervous systems. This increases allostatic load, which is the cost of physiological fluctuations that are required to cope with psychological challenges as well as changes in the physical environment. Recent studies have enriched our knowledge about the role of chronic stress in disease development, especially carcinogenesis. Stress stimulates the hypothalamic-pituitaryadrenal (HPA) axis and the sympathetic nervous system (SNS), resulting in an abnormal release of hormones. These activate signaling pathways that elevate expression of downstream oncogenes. This occurs by activation of specific receptors that promote numerous cancer biological processes, including proliferation, genomic instability, angiogenesis, metastasis, immune evasion and metabolic disorders. Moreover, accumulating evidence has revealed that β-adrenergic receptor (ADRB) antagonists and downstream target inhibitors exhibit remarkable anti-tumor effects. Psychosomatic behavioral interventions (PBI) and traditional Chinese medicine (TCM) also effectively relieve the impact of stress in cancer patients. In this review, we discuss recent advances in the underlying mechanisms that are responsible for stress in promoting malignancies. Collectively, these data provide approaches for NextGen pharmacological therapies, PBI and TCM to reduce the burden of tumorigenesis.
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Affiliation(s)
- Bai Cui
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China; State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-sen University, 651 Dongfeng East Road, Guangzhou, Guangdong Province 510060, China
| | - Fei Peng
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Jinxin Lu
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Bin He
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Qitong Su
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Huandong Luo
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Ziqian Deng
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Tonghui Jiang
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Keyu Su
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Yanping Huang
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Zaheer Ud Din
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Eric W-F Lam
- Department of Surgery and Cancer, Imperial College London, London W12 0NN, UK
| | - Keith W Kelley
- Department of Pathology, College of Medicine and Department of Animal Sciences, College of ACES, University of Illinois at Urbana-Champaign, 212 Edward R. Madigan Laboratory, 1201 West Gregory Drive, Urbana, Il 61801, USA.
| | - Quentin Liu
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China; State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-sen University, 651 Dongfeng East Road, Guangzhou, Guangdong Province 510060, China.
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18
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Shi M, Chu F, Tian X, Aerqin Q, Zhu F, Zhu J. Role of Adaptive Immune and Impacts of Risk Factors on Adaptive Immune in Alzheimer's Disease: Are Immunotherapies Effective or Off-Target? Neuroscientist 2021; 28:254-270. [PMID: 33530843 DOI: 10.1177/1073858420987224] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The pathogenesis of Alzheimer's disease (AD) is complex. Still it remains unclear, which resulted in all efforts for AD treatments with targeting the pathogenic factors unsuccessful over past decades. It has been evidenced that the innate immune is strongly implicated in the pathogenesis of AD. However, the role of adaptive immune in AD remains mostly unknown and the results obtained were controversial. In the review, we summarized recent studies and showed that the molecular and cellular alterations in AD patients and its animal models involving T cells and B cells as well as immune mediators of adaptive immune occur not only in the peripheral blood but also in the brain and the cerebrospinal fluid. The risk factors that cause AD contribute to AD progress by affecting the adaptive immune, indicating that adaptive immunity proposes a pivotal role in this disease. It may provide a possible basis for applying immunotherapy in AD and further investigates whether the immunotherapies are effective or off-target?
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Affiliation(s)
- Mingchao Shi
- Neuroscience Center, Department of Neurology, The First Hospital of Jilin University, Changchun, China.,Department of Neurobiology, Care Sciences & Society, Division of Neurogeriatrcs, Karolinska Institute, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Fengna Chu
- Neuroscience Center, Department of Neurology, The First Hospital of Jilin University, Changchun, China.,Department of Neurobiology, Care Sciences & Society, Division of Neurogeriatrcs, Karolinska Institute, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Xiaoping Tian
- Cognitive Impairment Ward of Neurology Department, The Third Affiliated Hospital of Shenzhen University Medical College, Shenzhen, China
| | - Qiaolifan Aerqin
- Neuroscience Center, Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Feiqi Zhu
- Cognitive Impairment Ward of Neurology Department, The Third Affiliated Hospital of Shenzhen University Medical College, Shenzhen, China
| | - Jie Zhu
- Neuroscience Center, Department of Neurology, The First Hospital of Jilin University, Changchun, China.,Department of Neurobiology, Care Sciences & Society, Division of Neurogeriatrcs, Karolinska Institute, Karolinska University Hospital Solna, Stockholm, Sweden
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19
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Doifode T, Giridharan VV, Generoso JS, Bhatti G, Collodel A, Schulz PE, Forlenza OV, Barichello T. The impact of the microbiota-gut-brain axis on Alzheimer's disease pathophysiology. Pharmacol Res 2021; 164:105314. [PMID: 33246175 DOI: 10.1016/j.phrs.2020.105314] [Citation(s) in RCA: 140] [Impact Index Per Article: 46.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/18/2020] [Accepted: 11/20/2020] [Indexed: 12/17/2022]
Abstract
The gut microbiota is a complex ecosystem that comprises of more than 100 trillion symbiotic microbial cells. The microbiota, the gut, and the brain form an association, 'the microbiota-gut-brain axis,' and synchronize the gut with the central nervous system and modify the behavior and brain immune homeostasis. The bidirectional communication between gut and brain occurs via the immune system, the vagus nerve, the enteric nervous system, and microbial metabolites, including short-chain fatty acids (SCFAs), proteins, and tryptophan metabolites. Recent studies have implicated the gut microbiota in many neurodegenerative diseases, including Alzheimer's disease (AD). In this review, we present an overview of gut microbiota, including Firmicutes, Bacteroidetes, SCFA, tryptophan, bacterial composition, besides age-related changes in gut microbiota composition, the microbiota-gut-brain axis pathways, the role of gut metabolites in amyloid-beta clearance, and gut microbiota modulation from experimental and clinical AD models. Understanding the role of the microbiota may provide new targets for treatment to delay the onset, progression, or reverse AD, and may help in reducing the prevalence of AD.
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Affiliation(s)
- Tejaswini Doifode
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Vijayasree V Giridharan
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Jaqueline S Generoso
- Experimental Physiopathology Laboratory, Graduate Program in Health Sciences, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, SC, Brazil
| | - Gursimrat Bhatti
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Allan Collodel
- Experimental Physiopathology Laboratory, Graduate Program in Health Sciences, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, SC, Brazil
| | - Paul E Schulz
- Neurocognitive Disorders Center, Department of Neurology, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Orestes V Forlenza
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry, Hospital das Clínicas HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Tatiana Barichello
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA; Experimental Physiopathology Laboratory, Graduate Program in Health Sciences, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, SC, Brazil.
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20
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Weiss S. Microbiota as mediator and moderator of stress. Bioessays 2021; 43:e2000277. [PMID: 33236390 PMCID: PMC10822145 DOI: 10.1002/bies.202000277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 10/15/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Sandra Weiss
- Department of Community Health Systems, UCSF Depression Center, University of California, San Francisco, USA
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21
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Wu Q, Chen Y, Zhang W, Song S, Xu Z, Zhang H, Liu L, Sun J. Upregulation of Chemokines in the Paraventricular Nucleus of the Hypothalamus in Rats with Stress-Induced Hypertension. Med Sci Monit 2020; 26:e926807. [PMID: 33199674 PMCID: PMC7680658 DOI: 10.12659/msm.926807] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background The neuroinflammation of paraventricular nucleus (PVN) of the hypothalamus has been implicated in the development of hypertension. The promoted invasion of peripheral immune cells into PVN may be attributed to the upregulation of chemokines, then exacerbating neuroinflammation. We studied the expressions of chemokines, activation of microglial cells, and inflammatory mediators in PVN of rats with stress-induced hypertension (SIH). Material/Methods SIH was induced by electrical foot shock combined with noise for 2 h twice a day, at an interval of 4 h for 14 consecutive days. At the end of the 14th day, fresh PVN tissues were collected to measure the expressions of chemokines using the RayBiotech antibody array. Results We are the first to report that the expression of CXCL7 was extremely high in PVN of control rats, and was significantly lower in SIH rats. The expressions of CCL2 and CX3CL1 in PVN of SIH rats significantly exceeded those of control rats. The numbers of CX3CR1 (receptor of CX3CL1)-immunostained cells and oxycocin-42 (OX-42, marker of microglia)-positive cells increased in PVN of the SIH rats. The stress enhanced the protein expressions of proinflammatory cytokines IL-6 and IL-17 and reduced those of anti-inflammatory cytokines TGF-β and IL-10 in PVN. Conclusions In PVN of SIH rats, chronic stress induced neuroinflammation characterized by the activated microglia and upregulated proinflammatory cytokines. Expressions of chemokines CXCL7, CX3CL1, and CCL2 were altered. The causal link of chemokines to PVN neuroinflammation and hypertension remain to be determined.
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Affiliation(s)
- Qin Wu
- Medical College, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu, China (mainland)
| | - Yuping Chen
- Basic Medical Science, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu, China (mainland)
| | - Wenying Zhang
- Department of Science and Technology, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu, China (mainland)
| | - Siyuan Song
- Department of Science and Technology, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu, China (mainland)
| | - Ziyang Xu
- Department of Science and Technology, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu, China (mainland)
| | - Hong Zhang
- College of Medical Technology, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu, China (mainland)
| | - Liping Liu
- College of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu, China (mainland)
| | - Jihu Sun
- Department of Science and Technology, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu, China (mainland)
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Grammatikopoulou MG, Goulis DG, Gkiouras K, Theodoridis X, Gkouskou KK, Evangeliou A, Dardiotis E, Bogdanos DP. To Keto or Not to Keto? A Systematic Review of Randomized Controlled Trials Assessing the Effects of Ketogenic Therapy on Alzheimer Disease. Adv Nutr 2020; 11:1583-1602. [PMID: 32597927 PMCID: PMC7666893 DOI: 10.1093/advances/nmaa073] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/16/2020] [Accepted: 05/27/2020] [Indexed: 12/14/2022] Open
Abstract
Alzheimer disease (AD) is a global health concern with the majority of pharmacotherapy choices consisting of symptomatic treatment. Recently, ketogenic therapies have been tested in randomized controlled trials (RCTs), focusing on delaying disease progression and ameliorating cognitive function. The present systematic review aimed to aggregate the results of trials examining the effects of ketogenic therapy on patients with AD/mild cognitive impairment (MCI). A systematic search was conducted on PubMed, CENTRAL, clinicaltrials.gov, and gray literature for RCTs performed on adults, published in English until 1 April, 2019, assessing the effects of ketogenic therapy on MCI and/or AD compared against placebo, usual diet, or meals lacking ketogenic agents. Two researchers independently extracted data and assessed risk of bias with the Cochrane tool. A total of 10 RCTs were identified, fulfilling the inclusion criteria. Interventions were heterogeneous, acute or long term (45-180 d), including adherence to a ketogenic diet, intake of ready-to-consume drinks, medium-chain triglyceride (MCT) powder for drinks preparation, yoghurt enriched with MCTs, MCT capsules, and ketogenic formulas/meals. The use of ketoneurotherapeutics proved effective in improving general cognition using the Alzheimer's Disease Assessment Scale-Cognitive, in interventions of either duration. In addition, long-term ketogenic therapy improved episodic and secondary memory. Psychological health, executive ability, and attention were not improved. Increases in blood ketone concentrations were unanimous and correlated to the neurocognitive battery based on various tests. Cerebral ketone uptake and utilization were improved, as indicated by the global brain cerebral metabolic rate for ketones and [11C] acetoacetate. Ketone concentrations and cognitive performance differed between APOE ε4(+) and APOE ε4(-) participants, indicating a delayed response among the former and an improved response among the latter. Although research on the subject is still in the early stages and highly heterogeneous in terms of study design, interventions, and outcome measures, ketogenic therapy appears promising in improving both acute and long-term cognition among patients with AD/MCI. This systematic review was registered at www.crd.york.ac.uk/prospero as CRD42019128311.
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Affiliation(s)
- Maria G Grammatikopoulou
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Dimitrios G Goulis
- Unit of Reproductive Endocrinology, 1st Department of Obstetrics and Gynecology, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Konstantinos Gkiouras
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Xenophon Theodoridis
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | | | - Athanasios Evangeliou
- 4th Department of Pediatrics, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Thessaloniki, Greece
| | - Efthimis Dardiotis
- Department of Neurology, Laboratory of Neurogenetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, University Hospital of Larissa, Larissa, Greece
| | - Dimitrios P Bogdanos
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
- Division of Transplantation Immunology and Mucosal Biology, MRC Centre for Transplantation, King's College London Medical School, London, United Kingdom
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Vasquez EC, Aires R, Ton AMM, Amorim FG. New Insights on the Beneficial Effects of the Probiotic Kefir on Vascular Dysfunction in Cardiovascular and Neurodegenerative Diseases. Curr Pharm Des 2020; 26:3700-3710. [DOI: 10.2174/1381612826666200304145224] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 02/26/2020] [Indexed: 12/14/2022]
Abstract
The mechanisms responsible for cardiovascular and neurodegenerative diseases have been the focus of
experimental and clinical studies for decades. The relationship between the gut microbiota and the organs and
system tissues represents the research field that has generated the highest number of publications. Homeostasis of
the gut microbiota is important to the host because it promotes maturation of the autoimmune system, harmonic
integrative functions of the brain, and the normal function of organs related to cardiovascular and metabolic systems.
On the other hand, when a gut microbiota dysbiosis occurs, the target organs become vulnerable to the
onset or aggravation of complex chronic conditions, such as cardiovascular (e.g., arterial hypertension) and neurodegenerative
(e.g., dementia) diseases. In the present brief review, we discuss the main mechanisms involved in
those disturbances and the promising beneficial effects that have been revealed using functional food (nutraceuticals),
such as the traditional probiotic Kefir. Here, we highlight the current scientific advances, concerns, and
limitations about the use of this nutraceutical. The focus of our discussion is the endothelial dysfunction that
accompanies hypertension and the neurovascular dysfunction that characterizes ageing-related dementia in patients
suffering from Alzheimer's disease.
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Affiliation(s)
- Elisardo C. Vasquez
- Pharmaceutical Sciences Graduate Program, Vila Velha University (UVV), Vila Velha, ES, Brazil
| | - Rafaela Aires
- Physiological Sciences Graduate Program, Federal University of Espirito Santo (UFES), Vitoria, ES, Brazil
| | - Alyne M. M. Ton
- Pharmaceutical Sciences Graduate Program, Vila Velha University (UVV), Vila Velha, ES, Brazil
| | - Fernanda G. Amorim
- Pharmaceutical Sciences Graduate Program, Vila Velha University (UVV), Vila Velha, ES, Brazil
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The HPA axis dysregulation in severe mental illness: Can we shift the blame to gut microbiota? Prog Neuropsychopharmacol Biol Psychiatry 2020; 102:109951. [PMID: 32335265 DOI: 10.1016/j.pnpbp.2020.109951] [Citation(s) in RCA: 144] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/15/2020] [Accepted: 04/21/2020] [Indexed: 12/12/2022]
Abstract
Accumulating evidence indicates that patients with severe mental disorders, including major depression, bipolar disorder and schizophrenia present with various alterations of the gut microbiota and increased intestinal permeability. In addition, the hypothalamic-pituitary-adrenal (HPA) axis dysregulation and subclinical inflammation have been reported in this group of patients. Although it has been found that the HPA axis dysregulation appears as a consequence of psychosocial stress, especially traumatic life events, the exact mechanisms of this observation remain unclear. Animal model studies have unraveled several mechanisms linking the gut microbiota with the HPA axis dysfunction. Indeed, the gut microbiota can activate the HPA axis through several mediators that cross the blood-brain barrier and include microbial antigens, cytokines and prostaglandins. There is also evidence that various microbial species can affect ileal corticosterone production that may impact the activity of the HPA axis. However, some metabolites released by various microbes, e.g., short-chain fatty acids, can attenuate the HPA axis response. Moreover, several bacteria release neurotransmitters that can directly interact with vagal afferents. It has been postulated that the HPA axis activation can impact the gut microbiota and intestinal permeability. In this article, we discuss various mechanisms linking the gut microbiota with the HPA axis activity and summarize current evidence for a cross-talk between the gut-brain axis and the HPA axis from studies of patients with mood and psychotic disorders. Finally, we show potential clinical implications that can arise from future studies investigating the HPA axis activity with respect to the gut microbiota in severe mental disorders.
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Raval U, Harary J, Zeng E, Pasinetti GM. The dichotomous role of the gut microbiome in exacerbating and ameliorating neurodegenerative disorders. Expert Rev Neurother 2020; 20:673-686. [PMID: 32459513 PMCID: PMC7387222 DOI: 10.1080/14737175.2020.1775585] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 05/26/2020] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Age related neurodegenerative disorders affect millions of people around the world. The role of the gut microbiome (GM) in neurodegenerative disorders has been elucidated over the past few years. Dysbiosis of the gut microbiome ultimately results in neurodegeneration. However, the gut microbiome can be modulated to promote neuro-resilience. AREAS COVERED This review is focused on demonstrating the role of the gut microbiome in host physiology in Parkinson's disease (PD) and other neurodegenerative disorders. We will discuss how the microbiome will impact neurodegeneration in PD, Alzheimer's Disease (AD), Multiple sclerosis (MS), Amyotrophic Lateral Sclerosis (ALS), and finally discuss how the gut microbiome can be influenced through diet and lifestyle. EXPERT OPINION Currently, much of the focus has been to study the mechanisms by which the microbiome induces neuroinflammation and neurodegeneration in PD, AD, MS, ALS. In particular, the role of certain dietary flavonoids in regulation of gut microbiome to promote neuro-resilience. Polyphenol prebiotics delivered in combination with probiotics (synbiotics) present an exciting new avenue to harness the microbiome to attenuate immune inflammatory responses which ultimately may influence brain cascades associated with promotion of neurodegeneration across the lifespan.
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Affiliation(s)
- Urdhva Raval
- Department of Neurology, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Joyce Harary
- Department of Neurology, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Emma Zeng
- Department of Neurology, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Giulio M. Pasinetti
- Department of Neurology, Mount Sinai School of Medicine, New York, NY 10029, USA
- Geriatric Research, Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY 10468, USA
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