Adrian Drapala1, Mariusz Sikora1, Marcin Ufnal2. 1. Department of Experimental and Clinical Physiology, Medical University of Warsaw, Poland. 2. Department of Experimental and Clinical Physiology, Medical University of Warsaw, Poland mufnal@wum.edu.pl.
Abstract
BACKGROUND: Statins, a class of lipid lowering drugs, decrease mortality associated with cardiovascular events. As hypercholesterolemia is often accompanied by hypertension, a large number of patients receive therapy with statins and antihypertensive drugs which act via the renin-angiotensin-aldosterone system (RAAS). New guidelines published by the American Heart Association and American College of Cardiology on the treatment of dyslipidaemia and the reduction of atherosclerotic cardiovascular risk, which use a risk prediction algorithm based on risk factors such as hypertension but not low-density lipoprotein (LDL) level, may even further increase the number of patients receiving such concomitant therapy. METHOD: In this paper we review studies on an interaction between statins, the RAAS and antihypertensive drugs acting via the RAAS. RESULT: Accumulating evidence suggests that the combination of statins and drugs affecting the RAAS exerts a synergistic effect on the circulatory system. For example, statins may lower arterial blood pressure and augment the effect of antihypertensive drugs acting via the RAAS. Statins may interact with the RAAS in a number of ways i.e. to decrease the expression of receptors for angiotensin II (Ang II), inhibit the Ang II-dependent intracellular signalling, reduce the RAAS-dependent oxidative stress and inflammation as well as inhibit the synthesis of Ang II and aldosterone. CONCLUSION: Although statins given either alone or together with antihypertensive drugs acting via the RAAS may lower arterial blood pressure, further research is needed to evaluate the mechanisms and their therapeutic significance.
BACKGROUND: Statins, a class of lipid lowering drugs, decrease mortality associated with cardiovascular events. As hypercholesterolemia is often accompanied by hypertension, a large number of patients receive therapy with statins and antihypertensive drugs which act via the renin-angiotensin-aldosterone system (RAAS). New guidelines published by the American Heart Association and American College of Cardiology on the treatment of dyslipidaemia and the reduction of atherosclerotic cardiovascular risk, which use a risk prediction algorithm based on risk factors such as hypertension but not low-density lipoprotein (LDL) level, may even further increase the number of patients receiving such concomitant therapy. METHOD: In this paper we review studies on an interaction between statins, the RAAS and antihypertensive drugs acting via the RAAS. RESULT: Accumulating evidence suggests that the combination of statins and drugs affecting the RAAS exerts a synergistic effect on the circulatory system. For example, statins may lower arterial blood pressure and augment the effect of antihypertensive drugs acting via the RAAS. Statins may interact with the RAAS in a number of ways i.e. to decrease the expression of receptors for angiotensin II (Ang II), inhibit the Ang II-dependent intracellular signalling, reduce the RAAS-dependent oxidative stress and inflammation as well as inhibit the synthesis of Ang II and aldosterone. CONCLUSION: Although statins given either alone or together with antihypertensive drugs acting via the RAAS may lower arterial blood pressure, further research is needed to evaluate the mechanisms and their therapeutic significance.
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