Anti-hypertensive Effects of Diminazene Aceturate: An Angiotensin- Converting Enzyme 2 Activator in Rats.
2015
Previous studies have shown that activation of endogenous angiotensin-converting enzyme
2 (ACE2) results in various beneficial effects in the cardiovascular system. Recently, a new ACE2 activator,
named diminazene aceturate (DIZE), was described. Here, we evaluated the actions of this
compound in blood pressure (BP) and heart rate (HR) of conscious normotensive and hypertensive
rats, as well as explored its mechanism of actions using isolated vessels. The renovascular model of
hypertension was utilized. The participation of the Angiotensin-(1-7) receptor Mas and nitric oxide
(NO) in the effects of DIZE was evaluated using A-779 and L-NAME, respectively. It was observed that DIZE caused a
marked decrease in BP with a compensatory increase in HR in nornotensive rats. Accordingly, a significant reduction in
the blood flow of the mesenteric bed was evidenced using intravital microscopy. Moreover, in rats with renovascular hypertension,
DIZE caused a decrease in BP similar to the hypotensive effect induced by captopril. Importantly, this compound
also prevented the development of cardiac hypertrophy induced by hypertension. The isolated vessels technique revealed
that the vasodilator effects of DIZE were dependent on Mas activation and NO release. Thus, our findings demonstrated
that DIZE reduces the BP of normotensinve and hypertensive rats possibly by a mechanism involving Mas and
NO.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
0
References
26
Citations
NaN
KQI