Aquaporin-1 (AQP1) is a water channel expressed in the choroid plexus.
Reactive astrocytes also express AQP1 under some pathological conditions.
3-Nitropropionic acid (3NP) is a neurotoxin that causes degeneration of striatum.
AQP1 was expressed in astroglia and neurons of rat striatum after 3NP treatment.
Induced AQP1 may play a pivotal role in water homeostasis in the striatum.