title: Astrocytes in Alzheimer's disease.
abstract: The circuitry of the human brain is formed by neuronal networks embedded into astroglial syncytia. The astrocytes perform numerous functions, providing for the overall brain homeostasis, assisting in neurogenesis, determining the micro-architecture of the grey matter, and defending the brain through evolutionary conserved astrogliosis programs. Astroglial cells are engaged in neurological diseases by determining the progression and outcome of neuropathological process. Astrocytes are specifically involved in various neurodegenerative diseases, including Alzheimer's disease, amyotrophic lateral sclerosis, Parkinson's disease, and various forms of dementia. Recent evidence suggest that early stages of neurodegenerative processes are associated with atrophy of astroglia, which causes disruptions in synaptic connectivity, disbalance in neurotransmitter homeostasis, and neuronal death through increased excitotoxicity. At the later stages, astrocytes become activated and contribute to the neuroinflammatory component of neurodegeneration.
authors.affiliation: Faculty of Life Sciences, The University of Manchester, Manchester M139PT, United Kingdom.
authors.forename: Alexei
authors.initials: A
authors.lastname: Verkhratsky
authors.forename: Markel
authors.initials: M
authors.lastname: Olabarria
authors.forename: Harun N
authors.initials: HN
authors.lastname: Noristani
authors.forename: Chia-Yu
authors.initials: CY
authors.lastname: Yeh
authors.forename: Jose Julio
authors.initials: JJ
authors.lastname: Rodriguez
mesh_terms: D000544:Alzheimer Disease / Q000150:complications / Q000473:pathology*; D000818:Animals; D001253:Astrocytes / Q000473:pathology* / Q000502:physiology*; D001921:Brain / Q000473:pathology*; D002450:Cell Communication; D006706:Homeostasis / Q000502:physiology; D006801:Humans; D019636:Neurodegenerative Diseases / Q000473:pathology; D009474:Neurons / Q000473:pathology / Q000502:physiology; D015398:Signal Transduction