There is increasing evidence that viral infections are the source/origin of various types of encephalitis, encephalomyelitis, and other neurological and cognitive disorders. While the involvement of certain viruses, such as the Nipah virus and measles virus, is known, the mechanisms of neural invasion and the factors that trigger intense immune reactions are not fully understood. Based on recent publications, this review discusses the role of the immune response, interactions between viruses and glial cells, and cytokine mediators in the development of inflammatory diseases in the central nervous system. It also highlights the significant gaps in knowledge regarding these mechanisms.
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http://dx.doi.org/10.3389/fnins.2023.1108212 | DOI Listing |
Front Cell Neurosci
July 2024
Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, Bochum, Germany.
bioRxiv
March 2024
Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, UT 80904.
Microglia are highly adaptable innate immune cells that rapidly respond to damage signals in the brain through adoption of a reactive phenotype and production of defensive inflammatory cytokines. Microglia express a distinct transcriptome, encoding receptors that allow them to dynamically respond to pathogens, damage signals, and cellular debris. Expression of one such receptor, the microglia-specific purinergic receptor , is known to be downregulated in reactive microglia.
View Article and Find Full Text PDFViruses
January 2024
Department of Pharmacology and Toxicology, College of Pharmacy, University of Utah, Salt Lake City, UT 84112, USA.
The infection of the central nervous system (CNS) with neurotropic viruses induces neuroinflammation and is associated with the development of neuroinflammatory and neurodegenerative diseases, including multiple sclerosis and epilepsy. The activation of the innate and adaptive immune response, including microglial, macrophages, and T and B cells, while required for efficient viral control within the CNS, is also associated with neuropathology. Under healthy conditions, resident microglia play a pivotal role in maintaining CNS homeostasis.
View Article and Find Full Text PDFIUBMB Life
June 2024
Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, India.
Although Multiple Sclerosis (MS) is primarily thought to be an autoimmune condition, its possible viral etiology must be taken into consideration. When mice are administered neurotropic viruses like mouse hepatitis virus MHV-A59, a murine coronavirus, or its isogenic recombinant strain RSA59, neuroinflammation along with demyelination are observed, which are some of the significant manifestations of MS. MHV-A59/RSA59 induced neuroinflammation is one of the best-studied experimental animal models to understand the viral-induced demyelination concurrent with axonal loss.
View Article and Find Full Text PDFHum Genet
October 2023
Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.
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