Abstract
Abstract Genetic differences exist between Blacks and whites through sympathetic-vascular transduction signaling mechanisms. However, the lack of benefit of alpha-1 blockers in whites may not be applicable in Africans. The angiotensin II (Ang II) and alpha-1 receptor pathways are critical for vasoconstriction in Blacks. This article reviewed the consequence of the dual blockade among Nigerians, those with and without cardiovascular disease. Both receptors exhibited crosstalk and mutual regulations. Synergistic inhibition of Forearm vasoconstriction and hypotensive response to enalapril + prazosin (alpha-1 blocker [A1B]) occurred (P < 0.05). High efficacy of dual blockade by angiotensin converting enzyme inhibitor (ACEI) + A1B was reported in hypertensive urgency, hypertensive crises, and heart failure (HF) with reduced ejection fraction congestive HF compared to ACEI (P < 0.05). The high efficacy of dual blockade by ACEI + A1B + diuretics is beneficial for widespread use in Nigerians with cardiovascular disease.
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