AGT and depressive symptom measurement: Low angiotensinogen levels in the brain lead to anxiety-like behaviors and depression-like behaviors, while intracerebroventricular administration of Ang-(1–7), selective serotonin reuptake inhibitor fluoxetine, enalapril (ACEI) attenuated behavioral changes in transgenic hypertensive rats, as shown by spending a lower percentage of time in the open arms of EPM and decreasing immobility time in FST (25, 38).