Review Article

Importance of the Brain Angiotensin System in Parkinson’s Disease

Table 2

Ligand activation of the AT1, AT2, and AT4 receptor subtypes influence the following functions.

AT1 receptor subtype
 Vasoconstriction
 Aldosterone release
 Vasopressin release
 Cardiac hypertrophy
 Fibrosis
 Proliferation
 Inflammation
 Platelet aggregation
 Oxidative stress
 Endothelial disruption

AT2 receptor subtype
 Vasodilation
 Antifibrotic
 Antiproliferative
 Antihypertrophic
 Antithrombotic

AT4 receptor subtype
 Dendritic arborization
 Changes in blood flow
 Memory facilitation
 Protection against seizures
 Facilitates wound healing