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1,637 results on '"Verkhratsky, Alexei"'

1. Amyloid precursor protein induces reactive astrogliosis

Author

Jauregui, Gretsen Velezmoro, Vukić, Dragana, Onyango, Isaac G, Arias, Carlos, Novotný, Jan S, Texlová, Kateřina, Wang, Shanshan, Kovačovicova, Kristina Locker, Polakova, Natalie, Zelinkova, Jana, Čarna, Maria, Lacovich, Valentina, Head, Brian P, Havas, Daniel, Mistrik, Martin, Zorec, Robert, Verkhratsky, Alexei, Keegan, Liam, O'Connell, Mary A, Rissman, Robert, and Stokin, Gorazd B

Subjects
Medical Physiology, Biomedical and Clinical Sciences, Physical Injury - Accidents and Adverse Effects, Traumatic Brain Injury (TBI), Brain Disorders, Neurodegenerative, Traumatic Head and Spine Injury, Neurosciences, 1.1 Normal biological development and functioning, Aetiology, Underpinning research, 2.1 Biological and endogenous factors, Neurological, Animals, Gliosis, Amyloid beta-Protein Precursor, Astrocytes, Mice, Cells, Cultured, Mice, Inbred C57BL, Brain Injuries, Traumatic, Mice, Knockout, amyloid precursor protein, astrocytes, interferon pathway, lipopolysaccharide, reactive astrogliosis, traumatic brain injury, Human Movement and Sports Sciences, Physiology, Medical physiology
Abstract

AimAstrocytes respond to stressors by acquiring a reactive state characterized by changes in their morphology and function. Molecules underlying reactive astrogliosis, however, remain largely unknown. Given that several studies observed increase in the Amyloid Precursor Protein (APP) in reactive astrocytes, we here test whether APP plays a role in reactive astrogliosis.MethodsWe investigated whether APP instigates reactive astroglios by examining in vitro and in vivo the morphology and function of naive and APP-deficient astrocytes in response to APP and well-established stressors.ResultsOverexpression of APP in cultured astrocytes led to remodeling of the intermediate filament network, enhancement of cytokine production, and activation of cellular programs centered around the interferon (IFN) pathway, all signs of reactive astrogliosis. Conversely, APP deletion abrogated remodeling of the intermediate filament network and blunted expression of IFN-stimulated gene products in response to lipopolysaccharide. Following traumatic brain injury (TBI), mouse reactive astrocytes also exhibited an association between APP and IFN, while APP deletion curbed the increase in glial fibrillary acidic protein observed canonically in astrocytes in response to TBI.ConclusionsThe APP thus represents a candidate molecular inducer and regulator of reactive astrogliosis. This finding has implications for understanding pathophysiology of neurodegenerative and other diseases of the nervous system characterized by reactive astrogliosis and opens potential new therapeutic avenues targeting APP and its pathways to modulate reactive astrogliosis.

Published
2024

2. Bioelectronic Medicine: a multidisciplinary roadmap from biophysics to precision therapies.

Author

González-González, María, Conde, Silvia, Latorre, Ramon, Thébault, Stéphanie, Pratelli, Marta, Spitzer, Nicholas, Verkhratsky, Alexei, Tremblay, Marie-Ève, Akcora, Cuneyt, Hernández-Reynoso, Ana, Ecker, Melanie, Coates, Jayme, Vincent, Kathleen, and Ma, Brandy

Subjects
biocompatible materials, bioelectronic medicine, channel biophysics, glia, high throughput data, medical devices, neuromodulation, neuronal plasticity
Abstract

Bioelectronic Medicine stands as an emerging field that rapidly evolves and offers distinctive clinical benefits, alongside unique challenges. It consists of the modulation of the nervous system by precise delivery of electrical current for the treatment of clinical conditions, such as post-stroke movement recovery or drug-resistant disorders. The unquestionable clinical impact of Bioelectronic Medicine is underscored by the successful translation to humans in the last decades, and the long list of preclinical studies. Given the emergency of accelerating the progress in new neuromodulation treatments (i.e., drug-resistant hypertension, autoimmune and degenerative diseases), collaboration between multiple fields is imperative. This work intends to foster multidisciplinary work and bring together different fields to provide the fundamental basis underlying Bioelectronic Medicine. In this review we will go from the biophysics of the cell membrane, which we consider the inner core of neuromodulation, to patient care. We will discuss the recently discovered mechanism of neurotransmission switching and how it will impact neuromodulation design, and we will provide an update on neuronal and glial basis in health and disease. The advances in biomedical technology have facilitated the collection of large amounts of data, thereby introducing new challenges in data analysis. We will discuss the current approaches and challenges in high throughput data analysis, encompassing big data, networks, artificial intelligence, and internet of things. Emphasis will be placed on understanding the electrochemical properties of neural interfaces, along with the integration of biocompatible and reliable materials and compliance with biomedical regulations for translational applications. Preclinical validation is foundational to the translational process, and we will discuss the critical aspects of such animal studies. Finally, we will focus on the patient point-of-care and challenges in neuromodulation as the ultimate goal of bioelectronic medicine. This review is a call to scientists from different fields to work together with a common endeavor: accelerate the decoding and modulation of the nervous system in a new era of therapeutic possibilities.

Published
2024

3. Astrocytes in human central nervous system diseases: a frontier for new therapies.

Author

Verkhratsky, Alexei, Butt, Arthur, Li, Baoman, Illes, Peter, Zorec, Robert, Semyanov, Alexey, Tang, Yong, and Sofroniew, Michael

Subjects
Humans, Astrocytes, Central Nervous System Diseases, Homeostasis, Stroke
Abstract

Astroglia are a broad class of neural parenchymal cells primarily dedicated to homoeostasis and defence of the central nervous system (CNS). Astroglia contribute to the pathophysiology of all neurological and neuropsychiatric disorders in ways that can be either beneficial or detrimental to disorder outcome. Pathophysiological changes in astroglia can be primary or secondary and can result in gain or loss of functions. Astroglia respond to external, non-cell autonomous signals associated with any form of CNS pathology by undergoing complex and variable changes in their structure, molecular expression, and function. In addition, internally driven, cell autonomous changes of astroglial innate properties can lead to CNS pathologies. Astroglial pathophysiology is complex, with different pathophysiological cell states and cell phenotypes that are context-specific and vary with disorder, disorder-stage, comorbidities, age, and sex. Here, we classify astroglial pathophysiology into (i) reactive astrogliosis, (ii) astroglial atrophy with loss of function, (iii) astroglial degeneration and death, and (iv) astrocytopathies characterised by aberrant forms that drive disease. We review astroglial pathophysiology across the spectrum of human CNS diseases and disorders, including neurotrauma, stroke, neuroinfection, autoimmune attack and epilepsy, as well as neurodevelopmental, neurodegenerative, metabolic and neuropsychiatric disorders. Characterising cellular and molecular mechanisms of astroglial pathophysiology represents a new frontier to identify novel therapeutic strategies.

Published
2023

7. Astrocyte endfoot formation controls the termination of oligodendrocyte precursor cell perivascular migration during development.

Author

Su, Yixun, Wang, Xiaorui, Yang, Yujian, Chen, Liang, Xia, Wenlong, Hoi, Kimberly, Li, Hui, Wang, Qi, Yu, Guangdan, Chen, Xiaoying, Wang, Shouyu, Wang, Yuxin, Xiao, Lan, Verkhratsky, Alexei, Fancy, Stephen, Yi, Chenju, and Niu, Jianqin

Subjects
astrocyte endfoot, myelination, oligodendrocyte precursor cells, perivascular migration, semaphorins, Oligodendrocyte Precursor Cells, Astrocytes, Oligodendroglia, Cell Differentiation, Cell Movement
Abstract

Oligodendrocyte precursor cells (OPCs) undergo an extensive and coordinated migration in the developing CNS, using the pre-formed scaffold of developed blood vessels as their physical substrate for migration. While OPC association with vasculature is critical for dispersal, equally important for permitting differentiation and proper myelination of target axons is their appropriate and timely detachment, but regulation of this process remains unclear. Here we demonstrate a correlation between the developmental formation of astrocytic endfeet on vessels and the termination of OPC perivascular migration. Ex vivo and in vivo live imaging shows that astrocyte endfeet physically displace OPCs from vasculature, and genetic abrogation of endfoot formation hinders both OPC detachment from vessels and subsequent differentiation. Astrocyte-derived semaphorins 3a and 6a act to repel OPCs from blood vessels at the cessation of their perivascular migration and, in so doing, permit subsequent OPC differentiation by insulating them from a maturation inhibitory endothelial niche.

Published
2023

8. Microglia states and nomenclature: A field at its crossroads

Author

Paolicelli, Rosa C, Sierra, Amanda, Stevens, Beth, Tremblay, Marie-Eve, Aguzzi, Adriano, Ajami, Bahareh, Amit, Ido, Audinat, Etienne, Bechmann, Ingo, Bennett, Mariko, Bennett, Frederick, Bessis, Alain, Biber, Knut, Bilbo, Staci, Blurton-Jones, Mathew, Boddeke, Erik, Brites, Dora, Brône, Bert, Brown, Guy C, Butovsky, Oleg, Carson, Monica J, Castellano, Bernardo, Colonna, Marco, Cowley, Sally A, Cunningham, Colm, Davalos, Dimitrios, De Jager, Philip L, de Strooper, Bart, Denes, Adam, Eggen, Bart JL, Eyo, Ukpong, Galea, Elena, Garel, Sonia, Ginhoux, Florent, Glass, Christopher K, Gokce, Ozgun, Gomez-Nicola, Diego, González, Berta, Gordon, Siamon, Graeber, Manuel B, Greenhalgh, Andrew D, Gressens, Pierre, Greter, Melanie, Gutmann, David H, Haass, Christian, Heneka, Michael T, Heppner, Frank L, Hong, Soyon, Hume, David A, Jung, Steffen, Kettenmann, Helmut, Kipnis, Jonathan, Koyama, Ryuta, Lemke, Greg, Lynch, Marina, Majewska, Ania, Malcangio, Marzia, Malm, Tarja, Mancuso, Renzo, Masuda, Takahiro, Matteoli, Michela, McColl, Barry W, Miron, Veronique E, Molofsky, Anna Victoria, Monje, Michelle, Mracsko, Eva, Nadjar, Agnes, Neher, Jonas J, Neniskyte, Urte, Neumann, Harald, Noda, Mami, Peng, Bo, Peri, Francesca, Perry, V Hugh, Popovich, Phillip G, Pridans, Clare, Priller, Josef, Prinz, Marco, Ragozzino, Davide, Ransohoff, Richard M, Salter, Michael W, Schaefer, Anne, Schafer, Dorothy P, Schwartz, Michal, Simons, Mikael, Smith, Cody J, Streit, Wolfgang J, Tay, Tuan Leng, Tsai, Li-Huei, Verkhratsky, Alexei, von Bernhardi, Rommy, Wake, Hiroaki, Wittamer, Valérie, Wolf, Susanne A, Wu, Long-Jun, and Wyss-Coray, Tony

Subjects
Microglia, Neurosciences, Psychology, Cognitive Sciences, Neurology & Neurosurgery
Abstract

Microglial research has advanced considerably in recent decades yet has been constrained by a rolling series of dichotomies such as "resting versus activated" and "M1 versus M2." This dualistic classification of good or bad microglia is inconsistent with the wide repertoire of microglial states and functions in development, plasticity, aging, and diseases that were elucidated in recent years. New designations continuously arising in an attempt to describe the different microglial states, notably defined using transcriptomics and proteomics, may easily lead to a misleading, although unintentional, coupling of categories and functions. To address these issues, we assembled a group of multidisciplinary experts to discuss our current understanding of microglial states as a dynamic concept and the importance of addressing microglial function. Here, we provide a conceptual framework and recommendations on the use of microglial nomenclature for researchers, reviewers, and editors, which will serve as the foundations for a future white paper.

Published
2022

14. A novel murine model of mania

Author

Li, Xinyu, Chen, Binjie, Zhang, Dianjun, Wang, Siman, Feng, Yuliang, Wu, Xiafang, Cui, Lulu, Ji, Ming, Gong, Wenliang, Verkhratsky, Alexei, Xia, Maosheng, and Li, Baoman

Published
2023
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15. Apoptotic cell death in disease—Current understanding of the NCCD 2023

Author

Vitale, Ilio, Pietrocola, Federico, Guilbaud, Emma, Aaronson, Stuart A., Abrams, John M., Adam, Dieter, Agostini, Massimiliano, Agostinis, Patrizia, Alnemri, Emad S., Altucci, Lucia, Amelio, Ivano, Andrews, David W., Aqeilan, Rami I., Arama, Eli, Baehrecke, Eric H., Balachandran, Siddharth, Bano, Daniele, Barlev, Nickolai A., Bartek, Jiri, Bazan, Nicolas G., Becker, Christoph, Bernassola, Francesca, Bertrand, Mathieu J. M., Bianchi, Marco E., Blagosklonny, Mikhail V., Blander, J. Magarian, Blandino, Giovanni, Blomgren, Klas, Borner, Christoph, Bortner, Carl D., Bove, Pierluigi, Boya, Patricia, Brenner, Catherine, Broz, Petr, Brunner, Thomas, Damgaard, Rune Busk, Calin, George A., Campanella, Michelangelo, Candi, Eleonora, Carbone, Michele, Carmona-Gutierrez, Didac, Cecconi, Francesco, Chan, Francis K. -M., Chen, Guo-Qiang, Chen, Quan, Chen, Youhai H., Cheng, Emily H., Chipuk, Jerry E., Cidlowski, John A., Ciechanover, Aaron, Ciliberto, Gennaro, Conrad, Marcus, Cubillos-Ruiz, Juan R., Czabotar, Peter E., D’Angiolella, Vincenzo, Daugaard, Mads, Dawson, Ted M., Dawson, Valina L., De Maria, Ruggero, De Strooper, Bart, Debatin, Klaus-Michael, Deberardinis, Ralph J., Degterev, Alexei, Del Sal, Giannino, Deshmukh, Mohanish, Di Virgilio, Francesco, Diederich, Marc, Dixon, Scott J., Dynlacht, Brian D., El-Deiry, Wafik S., Elrod, John W., Engeland, Kurt, Fimia, Gian Maria, Galassi, Claudia, Ganini, Carlo, Garcia-Saez, Ana J., Garg, Abhishek D., Garrido, Carmen, Gavathiotis, Evripidis, Gerlic, Motti, Ghosh, Sourav, Green, Douglas R., Greene, Lloyd A., Gronemeyer, Hinrich, Häcker, Georg, Hajnóczky, György, Hardwick, J. Marie, Haupt, Ygal, He, Sudan, Heery, David M., Hengartner, Michael O., Hetz, Claudio, Hildeman, David A., Ichijo, Hidenori, Inoue, Satoshi, Jäättelä, Marja, Janic, Ana, Joseph, Bertrand, Jost, Philipp J., Kanneganti, Thirumala-Devi, Karin, Michael, Kashkar, Hamid, Kaufmann, Thomas, Kelly, Gemma L., Kepp, Oliver, Kimchi, Adi, Kitsis, Richard N., Klionsky, Daniel J., Kluck, Ruth, Krysko, Dmitri V., Kulms, Dagmar, Kumar, Sharad, Lavandero, Sergio, Lavrik, Inna N., Lemasters, John J., Liccardi, Gianmaria, Linkermann, Andreas, Lipton, Stuart A., Lockshin, Richard A., López-Otín, Carlos, Luedde, Tom, MacFarlane, Marion, Madeo, Frank, Malorni, Walter, Manic, Gwenola, Mantovani, Roberto, Marchi, Saverio, Marine, Jean-Christophe, Martin, Seamus J., Martinou, Jean-Claude, Mastroberardino, Pier G., Medema, Jan Paul, Mehlen, Patrick, Meier, Pascal, Melino, Gerry, Melino, Sonia, Miao, Edward A., Moll, Ute M., Muñoz-Pinedo, Cristina, Murphy, Daniel J., Niklison-Chirou, Maria Victoria, Novelli, Flavia, Núñez, Gabriel, Oberst, Andrew, Ofengeim, Dimitry, Opferman, Joseph T., Oren, Moshe, Pagano, Michele, Panaretakis, Theocharis, Pasparakis, Manolis, Penninger, Josef M., Pentimalli, Francesca, Pereira, David M., Pervaiz, Shazib, Peter, Marcus E., Pinton, Paolo, Porta, Giovanni, Prehn, Jochen H. M., Puthalakath, Hamsa, Rabinovich, Gabriel A., Rajalingam, Krishnaraj, Ravichandran, Kodi S., Rehm, Markus, Ricci, Jean-Ehrland, Rizzuto, Rosario, Robinson, Nirmal, Rodrigues, Cecilia M. P., Rotblat, Barak, Rothlin, Carla V., Rubinsztein, David C., Rudel, Thomas, Rufini, Alessandro, Ryan, Kevin M., Sarosiek, Kristopher A., Sawa, Akira, Sayan, Emre, Schroder, Kate, Scorrano, Luca, Sesti, Federico, Shao, Feng, Shi, Yufang, Sica, Giuseppe S., Silke, John, Simon, Hans-Uwe, Sistigu, Antonella, Stephanou, Anastasis, Stockwell, Brent R., Strapazzon, Flavie, Strasser, Andreas, Sun, Liming, Sun, Erwei, Sun, Qiang, Szabadkai, Gyorgy, Tait, Stephen W. G., Tang, Daolin, Tavernarakis, Nektarios, Troy, Carol M., Turk, Boris, Urbano, Nicoletta, Vandenabeele, Peter, Vanden Berghe, Tom, Vander Heiden, Matthew G., Vanderluit, Jacqueline L., Verkhratsky, Alexei, Villunger, Andreas, von Karstedt, Silvia, Voss, Anne K., Vousden, Karen H., Vucic, Domagoj, Vuri, Daniela, Wagner, Erwin F., Walczak, Henning, Wallach, David, Wang, Ruoning, Wang, Ying, Weber, Achim, Wood, Will, Yamazaki, Takahiro, Yang, Huang-Tian, Zakeri, Zahra, Zawacka-Pankau, Joanna E., Zhang, Lin, Zhang, Haibing, Zhivotovsky, Boris, Zhou, Wenzhao, Piacentini, Mauro, Kroemer, Guido, and Galluzzi, Lorenzo

Published
2023
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17. Astrocytes in Ageing

Author

Verkhratsky, Alexei, Semyanov, Alexey, Harris, J. Robin, Series Editor, Kundu, Tapas K., Advisory Editor, Korolchuk, Viktor, Advisory Editor, Bolanos-Garcia, Victor, Advisory Editor, Marles-Wright, Jon, Advisory Editor, and Korolchuk, Viktor I., editor

Published
2023
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22. Reactive astrocyte nomenclature, definitions, and future directions

Author

Escartin, Carole, Galea, Elena, Lakatos, András, O’Callaghan, James P, Petzold, Gabor C, Serrano-Pozo, Alberto, Steinhäuser, Christian, Volterra, Andrea, Carmignoto, Giorgio, Agarwal, Amit, Allen, Nicola J, Araque, Alfonso, Barbeito, Luis, Barzilai, Ari, Bergles, Dwight E, Bonvento, Gilles, Butt, Arthur M, Chen, Wei-Ting, Cohen-Salmon, Martine, Cunningham, Colm, Deneen, Benjamin, De Strooper, Bart, Díaz-Castro, Blanca, Farina, Cinthia, Freeman, Marc, Gallo, Vittorio, Goldman, James E, Goldman, Steven A, Götz, Magdalena, Gutiérrez, Antonia, Haydon, Philip G, Heiland, Dieter H, Hol, Elly M, Holt, Matthew G, Iino, Masamitsu, Kastanenka, Ksenia V, Kettenmann, Helmut, Khakh, Baljit S, Koizumi, Schuichi, Lee, C Justin, Liddelow, Shane A, MacVicar, Brian A, Magistretti, Pierre, Messing, Albee, Mishra, Anusha, Molofsky, Anna V, Murai, Keith K, Norris, Christopher M, Okada, Seiji, Oliet, Stéphane HR, Oliveira, João F, Panatier, Aude, Parpura, Vladimir, Pekna, Marcela, Pekny, Milos, Pellerin, Luc, Perea, Gertrudis, Pérez-Nievas, Beatriz G, Pfrieger, Frank W, Poskanzer, Kira E, Quintana, Francisco J, Ransohoff, Richard M, Riquelme-Perez, Miriam, Robel, Stefanie, Rose, Christine R, Rothstein, Jeffrey D, Rouach, Nathalie, Rowitch, David H, Semyanov, Alexey, Sirko, Swetlana, Sontheimer, Harald, Swanson, Raymond A, Vitorica, Javier, Wanner, Ina-Beate, Wood, Levi B, Wu, Jiaqian, Zheng, Binhai, Zimmer, Eduardo R, Zorec, Robert, Sofroniew, Michael V, and Verkhratsky, Alexei

Subjects
Neurosciences, Brain Disorders, Neurological, Aging, Animals, Astrocytes, Brain, Brain Diseases, Brain Injuries, Humans, Spinal Cord, Spinal Cord Injuries, Psychology, Cognitive Sciences, Neurology & Neurosurgery
Abstract

Reactive astrocytes are astrocytes undergoing morphological, molecular, and functional remodeling in response to injury, disease, or infection of the CNS. Although this remodeling was first described over a century ago, uncertainties and controversies remain regarding the contribution of reactive astrocytes to CNS diseases, repair, and aging. It is also unclear whether fixed categories of reactive astrocytes exist and, if so, how to identify them. We point out the shortcomings of binary divisions of reactive astrocytes into good-vs-bad, neurotoxic-vs-neuroprotective or A1-vs-A2. We advocate, instead, that research on reactive astrocytes include assessment of multiple molecular and functional parameters-preferably in vivo-plus multivariate statistics and determination of impact on pathological hallmarks in relevant models. These guidelines may spur the discovery of astrocyte-based biomarkers as well as astrocyte-targeting therapies that abrogate detrimental actions of reactive astrocytes, potentiate their neuro- and glioprotective actions, and restore or augment their homeostatic, modulatory, and defensive functions.

Published
2021

40. Glial Cells: Neuroglia

Author

Kettenmann, Helmut, Verkhratsky, Alexei, Pfaff, Donald W., editor, Volkow, Nora D., editor, and Rubenstein, John L., editor

Published
2022
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43. Principles of Astrogliopathology

Author

Verkhratsky, Alexei, Li, Baoman, Scuderi, Caterina, Parpura, Vladimir, Schousboe, Arne, Series Editor, Li, Baoman, editor, Parpura, Vladimir, editor, Verkhratsky, Alexei, editor, and Scuderi, Caterina, editor

Published
2021
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45. Neuroglia in Psychiatric Disorders

Author

Scuderi, Caterina, Verkhratsky, Alexei, Parpura, Vladimir, Li, Baoman, Schousboe, Arne, Series Editor, Li, Baoman, editor, Parpura, Vladimir, editor, Verkhratsky, Alexei, editor, and Scuderi, Caterina, editor

Published
2021
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46. APOE from patient-derived astrocytic extracellular vesicles alleviates neuromyelitis optica spectrum disorder in a mouse model

Author

Jiang, Shihe, primary, Li, Xindi, additional, Li, Yan, additional, Chang, Zhilin, additional, Yuan, Meng, additional, Zhang, Ying, additional, Zhu, Huimin, additional, Xiu, Yuwen, additional, Cong, Hengri, additional, Yin, Linlin, additional, Yu, Zhen-Wei, additional, Fan, Junwan, additional, He, Wenyan, additional, Shi, Kaibin, additional, Tian, De-Cai, additional, Zhang, Jing, additional, Verkhratsky, Alexei, additional, Jin, Wei-Na, additional, and Shi, Fu-Dong, additional

Published
2024
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48. Bioelectronic Medicine: a multidisciplinary roadmap from biophysics to precision therapies

Author

González-González, María Alejandra, primary, Conde, Silvia V., additional, Latorre, Ramon, additional, Thébault, Stéphanie C., additional, Pratelli, Marta, additional, Spitzer, Nicholas C., additional, Verkhratsky, Alexei, additional, Tremblay, Marie-Ève, additional, Akcora, Cuneyt G., additional, Hernández-Reynoso, Ana G., additional, Ecker, Melanie, additional, Coates, Jayme, additional, Vincent, Kathleen L., additional, and Ma, Brandy, additional

Published
2024
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50. How astrocytic chloride modulates brain states.

Author

Untiet, Verena and Verkhratsky, Alexei

Subjects
*HOMEOSTASIS, *CENTRAL nervous system, *CHLORIDES, *ASTROCYTES
Abstract

The way the central nervous system (CNS) responds to diverse stimuli is contingent upon the specific brain state of the individual, including sleep and wakefulness. Despite the wealth of readout parameters and data delineating the brain states, the primary mechanisms are yet to be identified. Here we highlight the role of astrocytes, with a specific emphasis on chloride (Cl−) homeostasis as a modulator of brain states. Neuronal activity is regulated by the concentration of ions that determine excitability. Astrocytes, as the CNS homeostatic cells, are recognised for their proficiency in maintaining dynamic homeostasis of ions, known as ionostasis. Nevertheless, the contribution of astrocyte‐driven ionostasis to the genesis of brain states or their response to sleep‐inducing pharmacological agents has been overlooked. Our objective is to underscore the significance of astrocytic Cl− homeostasis, elucidating how it may underlie the modulation of brain states. We endeavour to contribute to a comprehensive understanding of the interplay between astrocytes and brain states. [ABSTRACT FROM AUTHOR]

Published
2024
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