The incidence of all-cause, cardiovascular and respiratory disease admission among 20,252 users of lisinopril vs. perindopril: A cohort study

Efficacy and Safety of Perindopril in Patients with Essential Hypertension

Introduction

Perindopril is a tissue-specific ACE inhibitor with 24 hours long blood pressure-lowering effect, which protects blood vessels and decreases the variability of blood pressure.

Aim

The aim of our study was to investigate the effectiveness and safety of perindopril in newly diagnosed or previously treated but uncontrolled adult hypertensive patients.

Methods

This prospective cohort study included primary care patients with essential hypertension. Primary study outcomes were decreasing arterial blood pressure to normal levels (<140/90 mmHg), reducing systolic arterial blood pressure for 10 mmHg or more and reducing diastolic arterial blood pressure for 5 mmHg or more. Safety was evaluated by type and frequency of adverse events.

Results

In the great majority of the study patients (more than 96%) perindopril was effective as monotherapy, achieving a significant reduction in both systolic and diastolic blood pressure, and in three-quarters of the study patients it normalized both systolic and diastolic blood pressure. The effectiveness of perindopril was shown in both patients with previously and newly diagnosed hypertension, adverse events were mild and rare, even hyperkalemia was encountered less often than before the onset of the therapy with perindopril.

Conclusions

Our study confirmed excellent effectiveness of perindopril in the treatment of essential hypertension and its remarkable safety. When used as monotherapy of hypertension, perindopril's doses should be carefully titrated until the achievement of full effect, which in some patients should be awaited for at least 6 months from onset of the therapy.

The Role of Renin-Angiotensin-Aldosterone System and Its New Components in Arterial Stiffness and Vascular Aging

Many cardiovascular diseases present renin-angiotensin-aldosterone system (RAAS) hyperactivity as an important pathophysiological mechanism to be target in the therapeutic approaches. Moreover, arterial stiffness is currently considered as a new independent risk factor for cardiovascular disease in different clinical conditions, including hypertension and chronic kidney disease. In fact, excessive stimulation of angiotensin type 1 (AT1) receptors, as well as mineralocorticoid receptors, results in cellular growth, oxidative stress and vascular inflammation, which may lead to arterial stiffness and accelerate the process of vascular aging. In the last decades, a vasoprotective axis of the RAAS has been discovered, and now it is well established that new components with antioxidant and anti-inflammatory properties play important roles promoting vasodilation, natriuresis and reducing collagen deposition, thus attenuating arterial stiffness and improving endothelial function. In this review, we will focus on these pathophysiological mechanisms and the relevance of RAAS inhibition by different strategies to increase arterial compliance and to decelerate vascular aging.

Renin angiotensin aldosterone inhibition in the treatment of cardiovascular disease

A collective century of discoveries establishes the importance of the renin angiotensin aldosterone system in maintaining blood pressure, fluid volume and electrolyte homeostasis via autocrine, paracrine and endocrine signaling. While research continues to yield new functions of angiotensin II and angiotensin-(1-7), the gap between basic research and clinical application of these new findings is widening. As data accumulates on the efficacy of angiotensin converting enzyme inhibitors and angiotensin II receptor blockers as drugs of fundamental importance in the treatment of cardiovascular and renal disorders, it is becoming apparent that the achieved clinical benefits is suboptimal and surprisingly no different than what can be achieved with other therapeutic interventions. We discuss this issue and summarize new pathways and mechanisms effecting the synthesis and actions of angiotensin II. The presence of renin-independent non-canonical pathways for angiotensin II production are largely unaffected by agents inhibiting renin angiotensin system activity. Hence, new efforts should be directed to develop drugs that can effectively block the synthesis and/or action of intracellular angiotensin II. Improved drug penetration into cardiac or renal sites of disease, inhibiting chymase the primary angiotensin II forming enzyme in the human heart, and/or inhibiting angiotensinogen synthesis would all be more effective strategies to inhibit the system. Additionally, given the role of angiotensin II in the maintenance of renal homeostatic mechanisms, any new inhibitor should possess greater selectivity of targeting pathogenic angiotensin II signaling processes and thereby limit inappropriate inhibition.