Key result
Combined ACE inhibition and AT1 receptor blockade produced a 1.6-fold greater maximal reduction in mean arterial pressure compared to ACE inhibition alone in mast cell-sufficient mice.
Why the study?
Does acute ACE inhibition plus AT1 receptor blockade reduce mean arterial pressure more than ACE inhibition alone in mice?
Population
Mast cell-deficient (Kitw/Kitw-v) mice and their mast cell-sufficient littermate (MC+/+) controls
Comparison
Acute ACE inhibition plus AT1 receptor blockade vs Acute ACE inhibition alone
Design
Preclinical
Authors
Loading...
Hypothesis-generating for dual blockade in hypertension; extends mast cell Ang II mechanism in mice but leaves clinical translation open.
Does acute ACE inhibition plus AT1 receptor blockade reduce mean arterial pressure more than ACE inhibition alone in mice?
Effect estimate: 1.6-fold greater reduction
p-value: p=<0.05
Mast cells are the source of the vascular ACE-independent pathway for Ang II generation, providing a mechanistic rationale for the additional antihypertensive benefit of combining ACE inhibitors with AT1 receptor antagonists.
Li et al. (2004) studied Blood pressure regulation. Combined ACE inhibition (captopril) and AT1 receptor blockade (losartan) vs. ACE inhibition (captopril) alone was evaluated on Maximal reduction in mean arterial pressure (1.6-fold greater reduction, p=<0.05). Combined ACE inhibition and AT1 receptor blockade produced a 1.6-fold greater maximal reduction in mean arterial pressure compared to ACE inhibition alone in mast cell-sufficient mice.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: