ACE2/Ang-(1-7)/MasR axis on stress behavior and anxiety

Central areaAnimal modelMain effectsReference
Cerebral ventriclesAng-(1-7) acute injection to rats- First evidence of an anxiolytic action of Ang-(1-7)Holy et al., 1992 [146]
TGR(ASrAOGEN)680R rats (rats with low brain AGT, expressing an antisense RNA against AGT in glial cells)- Ang-(1-7) acute injection prevented the anxiety- and depressive-like behavior in transgenic ratsKangussu et al., 2013 [104]
Conscious male Wistar rats with induced tachycardia by acute stress (air jet 10 l/min)- Ang-(1-7) acute injection decreased by ~45% the tachycardia induced by emotional stressLima et al., 2013 [83]
Transgenic hypertensive (mRen2)27 rats- Ang-(1-7) infusion promoted anxiolytic effects
- Beneficial effects of Ang-(1-7) were mediated by MasR
Almeida Santos et al. 2016 [147]
C57BL/6 mice with enhanced ACE2 activity by central delivery of diminazene aceturate (ACE2 activator)- ACE2 activation reduced anxiety-like behavior
- Beneficial effects of ACE2 activation were mediated by MasR
Wang et al. 2016 [149]
AmygdalaAdult male Wistar rats- Ang-(1-7) acute injection induced anxiolytic effects
- Ang-(1-7) increased GPx specific activity and decreased the main peroxidation marker MDA
- The majority of the behavioral parameters correlated with markers of oxidative stress
Bild et al., 2013 [145]
Wistar rats submitted to stress trials- Ang-(1-7) prevented the tachycardia and the pressor response induced by acute stress
- Beneficial effects of Ang-(1-7) were mediated by MasR
Oscar et al., 2015 [121]
HippocampusMas–/– mice- Mas-deficient animals showed increased anxietyWalther et al., 1998 [148]

GPx: glutathione peroxidase; MDA: malondialdehyde