AQP4, found in astrocyte foot processes, glia limitans and ependyma, facilitates water movement into and out of the brain, accelerates astrocyte migration and alters neuronal activity.

• AQP4是在星形胶质细胞足突、胶质界膜和室管膜中发现的，有助于水分在脑内外交通，促进星形胶质细胞迁移，改变神经元的活力。