2019•CellsOpen access

Aquaporin-4 Water Channel in the Brain and Its Implication for Health and Disease

Simone Mader, Lior Brimberg

Abstract

Aquaporin-4 (AQP4) is a water channel expressed on astrocytic endfeet in the brain. The role of AQP4 has been studied in health and in a range of pathological conditions. Interest in AQP4 has increased since it was discovered to be the target antigen in the inflammatory autoimmune disease neuromyelitis optica spectrum disorder (NMOSD). Emerging data suggest that AQP4 may also be implicated in the glymphatic system and may be involved in the clearance of beta-amyloid in Alzheimer's disease (AD). In this review, we will describe the role of AQP4 in the adult and developing brain as well as its implication for disease.

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Key concepts: Neuromyelitis optica, Aquaporin 4, Glymphatic system, Disease, Water channel, Neuroscience, Aquaporin, Multiple sclerosis