Microglia In Health And Disease A Unique Immune Cell Population

Author : Alessandro Michelucci,Michel Mittelbronn,Diego Gomez-Nicola
Publisher : Frontiers Media SA
Page : 108 pages
File Size : 52,9 Mb
Release : 2018-10-05
Category : Electronic
ISBN : 9782889456017

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Microglia in Health and Disease: A Unique Immune Cell Population by Alessandro Michelucci,Michel Mittelbronn,Diego Gomez-Nicola Pdf

Microglia are essential for the development and function of the adult brain. Their ontogeny, together with the absence of turnover from the periphery and the singular environment of the central nervous system (CNS), make microglia a unique cell population compared to other tissue-macrophages. The unique properties and functions of microglial cells, such as their role in synaptic pruning or the exceptional capacity to scan the brain parenchyma and rapidly react to its perturbations, have emerged in recent years. In the coming years, understanding how microglia acquire and maintain their unique profiles in order to fulfil distinct tasks in the healthy CNS and how these are altered in disease, will be essential to develop strategies to diagnose or treat CNS disorders with an immunological component. This Research Topic covers several aspects of microglial biology, ranging from their origin and the functional role of microglia during development and lifespan, their molecular properties compared with other brain and peripheral immune cells to microglial phenotypes and functional states in neurodegenerative diseases and brain tumours. In conclusion, the present Research Topic provides a comprehensive overview of our current understanding of several cellular and molecular mechanisms that make microglia a unique immune cell population within the healthy CNS as well as under inflammatory, neurodegenerative and tumorigenic processes.

Author : Anonim
Publisher : Unknown
Page : 0 pages
File Size : 55,6 Mb
Release : 2018
Category : Electronic
ISBN : OCLC:1368411751

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Microglia in Health and Disease: A Unique Immune Cell Population by Anonim Pdf

Microglia are essential for the development and function of the adult brain. Their ontogeny, together with the absence of turnover from the periphery and the singular environment of the central nervous system (CNS), make microglia a unique cell population compared to other tissue-macrophages. The unique properties and functions of microglial cells, such as their role in synaptic pruning or the exceptional capacity to scan the brain parenchyma and rapidly react to its perturbations, have emerged in recent years. In the coming years, understanding how microglia acquire and maintain their unique profiles in order to fulfil distinct tasks in the healthy CNS and how these are altered in disease, will be essential to develop strategies to diagnose or treat CNS disorders with an immunological component. This Research Topic covers several aspects of microglial biology, ranging from their origin and the functional role of microglia during development and lifespan, their molecular properties compared with other brain and peripheral immune cells to microglial phenotypes and functional states in neurodegenerative diseases and brain tumours. In conclusion, the present Research Topic provides a comprehensive overview of our current understanding of several cellular and molecular mechanisms that make microglia a unique immune cell population within the healthy CNS as well as under inflammatory, neurodegenerative and tumorigenic processes.

Author : Marie-Ève Tremblay,Amanda Sierra
Publisher : Springer
Page : 486 pages
File Size : 46,7 Mb
Release : 2014-09-22
Category : Medical
ISBN : 9781493914296

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Microglia in Health and Disease by Marie-Ève Tremblay,Amanda Sierra Pdf

These past few years have witnessed a revolution in our understanding of microglia, especially since their roles in the healthy central nervous system (CNS) have started to unravel. These cells were shown to actively maintain health, in concert with neurons and other types of CNS cells, providing further insight into their involvement with diseases. Edited by two pioneers in the field, Marie-Ève Tremblay and Amanda Sierra, Microglia in health and disease aims to share with the broader scientific community some of the recent discoveries in microglia research, from a broad perspective, with a collection of 19 chapters from 52 specialists working in 11 countries across 5 continents. To set microglia on the stage, the book begins by explaining briefly who they are, what they do in the healthy and diseased CNS, and how they can be studied. The first section describes in more details their physiological roles in the maturation, function, and plasticity of the CNS, across development, adolescence, adulthood, neuropathic pain, addiction, and aging. The second section focuses on their implication in pathological conditions impairing the quality of life: neurodevelopmental and neuropsychiatric disorders, AIDS, and multiple sclerosis; and in leading causes of death: ischemia and stroke, neurodegenerative diseases, as well as trauma and injury.

Author : Raquel Ferreira,Liliana Bernardino,Maria Beatrice Passani,Cinzia Volonté
Publisher : Frontiers Media SA
Page : 176 pages
File Size : 40,5 Mb
Release : 2020-10-27
Category : Science
ISBN : 9782889661060

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Dual Role of Microglia in Health and Disease: Pushing the Balance Towards Repair by Raquel Ferreira,Liliana Bernardino,Maria Beatrice Passani,Cinzia Volonté Pdf

This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.

Author : Anonim
Publisher : Academic Press
Page : 992 pages
File Size : 51,5 Mb
Release : 2013-05-06
Category : Science
ISBN : 9780123973481

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Patterning and Cell Type Specification in the Developing CNS and PNS by Anonim Pdf

The genetic, molecular, and cellular mechanisms of neural development are essential for understanding evolution and disorders of neural systems. Recent advances in genetic, molecular, and cell biological methods have generated a massive increase in new information, but there is a paucity of comprehensive and up-to-date syntheses, references, and historical perspectives on this important subject. The Comprehensive Developmental Neuroscience series is designed to fill this gap, offering the most thorough coverage of this field on the market today and addressing all aspects of how the nervous system and its components develop. Particular attention is paid to the effects of abnormal development and on new psychiatric/neurological treatments being developed based on our increased understanding of developmental mechanisms. Each volume in the series consists of review style articles that average 15-20pp and feature numerous illustrations and full references. Volume 1 offers 48 high level articles devoted mainly to patterning and cell type specification in the developing central and peripheral nervous systems. Series offers 144 articles for 2904 full color pages addressing ways in which the nervous system and its components develop Features leading experts in various subfields as Section Editors and article Authors All articles peer reviewed by Section Editors to ensure accuracy, thoroughness, and scholarship Volume 1 sections include coverage of mechanisms which: control regional specification, regulate proliferation of neuronal progenitors and control differentiation and survival of specific neuronal subtypes, and controlling development of non-neural cells

Author : Raquel Ferreira,Liliana Bernardino
Publisher : Frontiers Media SA
Page : 103 pages
File Size : 41,6 Mb
Release : 2015-07-23
Category : Central nervous system
ISBN : 9782889194926

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Dual Role of Microglia in Health and Disease: Pushing the Balance Towards Repair by Raquel Ferreira,Liliana Bernardino Pdf

Microglial cells play a vital role in the innate immune response occurring in the Central Nervous System (CNS). Under physiologic conditions, microglia dynamically patrol the brain parenchyma and participate in the remodeling of active neuronal circuits. Accordingly, microglia can boost synaptic plasticity by removing apoptotic cells and by phagocytizing axon terminals and dendritic spines that form inappropriate neural connections. Upon brain and spinal cord injury or infection, microglia act as the first line of immune defense by promoting the clearance of damaged cells or infectious agents and by releasing neurotrophins and/ or proneurogenic factors that support neuronal survival and regeneration. Recently, two main pathways were suggested for microglia activation upon stimuli. Classical activation is induced by Toll-like receptor agonists and Th1 cytokines and polarizes cells to an M1 state, mainly leading to the release of TNF-alpha, IL-6 and nitric oxide and to grave neural damage. Alternative activation is mediated by Th2 cytokines and polarizes cells to an M2a state inducing the release of antiinflammatory factors. These findings have further fueled the discussion on whether microglia has a detrimental or beneficial action (M1 or M2-associated phenotypes, respectively) in the diseased or injured CNS and, more importantly, on whether we can shift the balance to a positive outcome. Although microglia and macrophages share several common features, upon M1 and M2 polarizing conditions, they are believed to develop distinct phenotypic and functional properties which translate into different patterns of activity. Moreover, microglia/macrophages seem to have developed a tightly organized system of maintenance of CNS homeostasis, since cells found in different structures have different morphology and specific function (e.g. meningeal macrophages, perivascular macrophages, choroid plexus macrophages). Nevertheless, though substantial work has been devoted to microglia function, consensus around their exact origin, their role during development, as well as the exact nature of their interaction with other cells of the CNS has not been met. This issue discusses how microglial cells sustain neuronal activity and plasticity in the healthy CNS as well as the cellular and molecular mechanisms developed by microglia in response to injury and disease. Understanding the mechanisms involved in microglia actions will enforce the development of new strategies to promote an efficient CNS repair by committing microglia towards neuronal survival and regeneration.

Author : Donna Jackson Nakazawa
Publisher : Ballantine Books
Page : 322 pages
File Size : 46,7 Mb
Release : 2021-01-19
Category : Science
ISBN : 9781524799199

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The Angel and the Assassin by Donna Jackson Nakazawa Pdf

A thrilling story of scientific detective work and medical potential that illuminates the newly understood role of microglia—an elusive type of brain cell that is vitally relevant to our everyday lives. “The rarest of books: a combination of page-turning discovery and remarkably readable science journalism.”—Mark Hyman, MD, #1 New York Times bestselling author of Food: What the Heck Should I Eat? NAMED ONE OF THE BEST BOOKS OF THE YEAR BY WIRED Until recently, microglia were thought to be helpful but rather boring: housekeeper cells in the brain. But a recent groundbreaking discovery has revealed that they connect our physical and mental health in surprising ways. When triggered—and anything that stirs up the immune system in the body can activate microglia, including chronic stressors, trauma, and viral infections—they can contribute to memory problems, anxiety, depression, and Alzheimer’s. Under the right circumstances, however, microglia can be coaxed back into being angelic healers, able to make brain repairs in ways that help alleviate symptoms and hold the promise to one day prevent disease. With the compassion born of her own experience, award-winning journalist Donna Jackson Nakazawa illuminates this newly understood science, following practitioners and patients on the front lines of treatments that help to “reboot” microglia. In at least one case, she witnesses a stunning recovery—and in others, significant relief from pressing symptoms, offering new hope to the tens of millions who suffer from mental, cognitive, and physical health issues. Hailed as a “riveting,” “stunning,” and “visionary,” The Angel and the Assassin offers us a radically reconceived picture of human health and promises to change everything we thought we knew about how to heal ourselves.

Author : Jason R. Plemel,Bahareh Ajami,Peggy Assinck,Greg J. Duncan,Jo Anne Stratton
Publisher : Frontiers Media SA
Page : 117 pages
File Size : 49,9 Mb
Release : 2023-04-05
Category : Science
ISBN : 9782832518410

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Non-neuronal cell heterogeneity in the nervous system during health and disease by Jason R. Plemel,Bahareh Ajami,Peggy Assinck,Greg J. Duncan,Jo Anne Stratton Pdf

Author : Olga Garaschuk,Alexei Verkhratsky
Publisher : Humana
Page : 340 pages
File Size : 45,8 Mb
Release : 2020-08-14
Category : Medical
ISBN : 1493996606

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Microglia by Olga Garaschuk,Alexei Verkhratsky Pdf

This book presents a comprehensive toolkit of versatile techniques for studying microglia under different experimental settings along with a brief summary of knowledge, accumulated in microglial research over the last decades. Beginning with recently discovered roles of microglia in health and disease, the volume continues by covering in vitro analyses of microglia, in vivo studies, and “omics” analyses. Written for the highly successful Methods in Molecular Biology series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Microglia: Methods and Protocols serves as a vital guide to these important cells and an inspiration for scientists interested in expanding our knowledge of their role in the nervous system.

Author : Yuru Deng,Angelina Angelova,George Attard,Shamim Hossain
Publisher : Frontiers Media SA
Page : 239 pages
File Size : 52,6 Mb
Release : 2021-11-29
Category : Science
ISBN : 9782889717132

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Lipid-Protein Mesophases and Cell Organelle Ultrastructure in Health and Disease by Yuru Deng,Angelina Angelova,George Attard,Shamim Hossain Pdf

Author : Björn E. Clausen,Jon D. Laman
Publisher : Humana
Page : 0 pages
File Size : 45,8 Mb
Release : 2017-01-07
Category : Medical
ISBN : 1493967843

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Inflammation by Björn E. Clausen,Jon D. Laman Pdf

This volume presents a broad selection of cutting-edge methods and tools that will enable the reader to investigate the multi-faceted manifestations of inflammation. Inflammation: Methods and Protocols is divided into four sections: the first three sections describe protocols investigating immune-mediated inflammatory disease models affecting barrier organs to the environment; the skin, the lung, and the intestinal and oral mucosa. The fourth section illustrates inflammatory disease models of the brain, joints, and vasculature. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and notes on troubleshooting and avoiding known pitfalls. Authoritative and practical, Inflammation: Methods and Protocols aims to inspire the experienced investigator and the young experimenter alike to disentangle the fascinating process of inflammation.

Author : Niels Olson Saraiva Camara,Tárcio Teodoro Braga
Publisher : Academic Press
Page : 324 pages
File Size : 45,7 Mb
Release : 2022-06-08
Category : Medical
ISBN : 9780128213865

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Macrophages in the Human Body by Niels Olson Saraiva Camara,Tárcio Teodoro Braga Pdf

Through recent research, there has been a significant number of findings involving the biology of macrophages. Beyond the 1st line of defense, macrophages have several specific characteristics across different tissues, organs, and systems. Macrophages comprehend a heterogeneous phagocytic population with wide range phenotypes, and tissue-specific functions, such as bone resorption, extracellular matrix production, red blood cells and bacteria removal, among others. Through innate immune receptors macrophages can modulate several pathways that culminate in the production of various types of inflammatory mediators such as chemokines, cytokines, oxygen reactive species, and lipid mediators which ultimately altered the behavior of other cells. Moreover, environment signals modify and induce metabolic reprograming that it alters phenotype and functions.Macrophages in the Human Body: A Tissue Level Approach presents a current overview of the diversity of macrophages across multiple human body systems, their phenotype, function and metabolic characteristics. It covers translational aspects where there is research support to indicate the therapeutic potential. Covers translational aspects where there is research support to indicate potential therapeutic potential Aims at presenting a current overview of the diversity of macrophages across multiple human body systems, their phenotype, function and metabolic characteristics Introduces Macrophages generally and dive into the organ/tissue/specific representations covering their phenotype, function, and metabolic characteristics Brings updated aspects of macrophages biology

Author : Valquiria Bueno,Rafael Solana,Annemieke Boots
Publisher : Frontiers Media SA
Page : 314 pages
File Size : 45,9 Mb
Release : 2020-01-15
Category : Electronic
ISBN : 9782889633616

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The Aging Immune System and Health by Valquiria Bueno,Rafael Solana,Annemieke Boots Pdf

The world population presents an increased percentage of individuals over 65 years old and the fastest growing subgroup is over 85 years old. The increase in life expectancy observed in the last century has not been synonymous with extra years lived in good health (disability-free years). Population studies have shown that as individuals age, they can present a great heterogeneity of ability and health. Therefore, aging has been associated for some individuals with disabilities and hospitalizations. Deaths related to infectious pathogens are increased in the aging population mainly due to pneumonia and influenza whereas Cytomegalovirus, Epstein-Barr virus, among other viruses seem to contribute to the low-grade inflammatory process observed (inflammaging). Aging is a complex and multifactorial process in which functions of the organism are adjusted (remodelled) in order to deal with damaging events during life. One of the most important changes in aging individuals occurs in the immune system (innate and adaptive responses) with consequences such as poor response to new infections and vaccinations; increased susceptibility to cancer development and autoimmune diseases; frailty, and organ dysfunction. In addition, it has been proposed that immunosenescence not only reflects the aging of the organism but also contributes to this process. Bone marrow presents decreased hematopoiesis, the thymus undergoes involution and lymphoid organs (lymph nodes, spleen) also present reduced functionality. Therefore, cells derived, matured, or residing in these tissues decline in number and function. These changes have been identified in experimental models, in vitro conditions, peripheral blood, and biopsies via biomarkers such as cell phenotype, stimulus-induced proliferation, cytokines and antibodies levels. Telomere length and telomerase activity also decline in bone marrow-derived and peripheral blood cells and have been shown to play a role in immunosenescence. More recently, the investigation of short non-coding RNA molecules (microRNAs; miRNAs) pointed to this system as a possible control of aging-related mechanisms. Data obtained on these markers for aging individuals could lead to the generation of a marker panel for pathology prediction, to indicate interventions, and to evaluate the efficacy of interventions. Interventions such as nutrition supplements, exercise, vaccination (different dose, concentration of antigen, adjuvants) have been proposed to circumvent age-related diseases. Considering the heterogeneity in the aging process, further investigation is vital before the indication of interventions for aging individuals. As the extension of life expectancy is a reality, it is a challenge to understand how the aging population copes with the remodelling of the organism and how interventions could provide longevity in good health.

Author : Amanda Sierra,Marie-Eve Tremblay,Hiroaki Wake
Publisher : Frontiers E-books
Page : 173 pages
File Size : 55,6 Mb
Release : 2015-02-11
Category : Microglia
ISBN : 9782889193691

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Never-resting microglia: physiological roles in the healthy brain and pathological implications by Amanda Sierra,Marie-Eve Tremblay,Hiroaki Wake Pdf

Microglia are largely known as the major orchestrators of the brain inflammatory response. As such, they have been traditionally studied in various contexts of disease, where their activation has been assumed to induce a wide range of detrimental effects. In the last few years, a series of discoveries have challenged the current view of microglia, showing their active and positive contribution to normal brain function. This Research Topic reviewed the novel physiological roles of microglia in the developing, mature and aging brain, under non-pathological conditions. In particular, this Research Topic discussed the cellular and molecular mechanisms by which microglia contribute to the formation, pruning and plasticity of synapses; the regulation of adult neurogenesis as well as hippocampal learning and memory; among other important roles. Because these novel findings defy our understanding of microglial function in health as much as in disease, this Research Topic also summarized the current view of microglial nomenclature, phenotypes, origin and differentiation, and contribution to various brain pathologies. Additionally, novel imaging approaches and molecular tools to study microglia in their non-activated state have been discussed. In conclusion, this Research Topic seeked to emphasize how the current research in neuroscience is challenged by never-resting microglia.

Author : Gwendolyn Barcel´o-Coblijn,Amedeo Amedei
Publisher : MDPI
Page : 206 pages
File Size : 45,5 Mb
Release : 2019-11-06
Category : Medical
ISBN : 9783039216468

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The Interplay of Microbiome and Immune Response in Health and Diseases by Gwendolyn Barcel´o-Coblijn,Amedeo Amedei Pdf

[Increasing evidence suggests that microbiota and especially the gut microbiota (the microbes inhabiting the gut including bacteria, archaea, viruses, and fungi) plays a key role in human physiology and pathology. Recent findings indicate how dysbiosis—an imbalance in the composition and organization of microbial populations—could severely impact the development of different medical conditions (from metabolic to mood disorders), providing new insights into the comprehension of diverse diseases, such as IBD, obesity, asthma, autism, stroke, diabetes, and cancer. Given that microbial cells in the gut outnumber host cells, microbiota influences human physiology both functionally and structurally. Microbial metabolites bridge various—even distant—areas of the organism by way of the immune and hormone system. For instance, it is now clear that the mutual interaction between the gastrointestinal tract and the brain (gut–brain axis), often involves gut microbiota, indicating that the crosstalk between the organism and its microbial residents represents a fundamental aspect of both the establishment and maintenance of healthy conditions. Moreover, it is crucial to recognize that beyond the intestinal tract, microbiota populates other host organs and tissues (e.g., skin and oral mucosa). We have edited this eBook with the aim of publishing manuscripts focusing on the impact of microbiota in the development of different diseases and their associated treatments.]