BACKGROUND The metabolic syndrome is associated with increased angiotensin II activity, induction of a proinflammatory and oxidative state, and endothelial dysfunction. We evaluated the ability of irbesartan, an angiotensin receptor blocker, and lipoic acid, an antioxidant, to affect endothelial function and inflammation in patients with the metabolic syndrome. METHODS AND RESULTS We randomiz...

BACKGROUND To review published studies on the cost-effectiveness of the use of irbesartan for treatment of advance overt nephropathy in patients with type 2 diabetes and hypertension. METHODS Articles were identified based on a search of the PubMed databases using the keywords 'irbesartan', 'ESRD', 'cost-effectiveness', 'nephropathy' and 'costs', and by personal communication with the authors...

Background: Telmisartan and irbesartan, two of the main AT1 receptor antagonists available for the control of cardiovascular diseases, differ in their pharmacological properties, including time of dissociation from the AT1 receptor and the ability to activate other receptors, with potential impact on their relative clinical efficacy. Objectives: The aim of this study was to compare the acute ca...

BACKGROUND Hypertension represents a major health problem, affecting more than one billion adults worldwide. Irbesartan, an angiotensin II receptor blocker, is considered to be a highly effective treatment in the management of hypertension. The purpose of this review is to evaluate the efficacy, safety and tolerability profile, and cost-effectiveness of treatment with irbesartan in hypertension...

OBJECTIVE It is widely recognized that atherosclerosis is a chronic inflammatory disease. Intracellular adhesion molecule-1 (ICAM-1), vascular cellular adhesion molecule-1 (VCAM-1), and E-selectin play vital roles in inflammatory processes. ICAM-1, VCAM-1, and E-selectin expression is regulated by nuclear factor (NF)-κB signaling. It has been reported that irbesartan can decrease expression of ...

In experimental settings, angiotensin II has been reported to interact with the sympathetic nervous system both centrally and peripherally. Direct evidence for this mechanism is limited in humans. We have examined the effect of AT1 receptor blockade on plasma noradrenaline during isometric handgrip exercise in healthy young volunteers. This study investigated the effects of five days pretreatme...

BACKGROUND "Aldosterone breakthrough" observed in patients receiving long-term treatment with angiotensin blockade is strongly associated with increased risk of left ventricular hypertrophy, poor exercise capacity, refractory proteinuria, and declining glomerular filtration rate through the profibrotic actions of aldosterone. To overcome aldosterone breakthrough, we examined the additional orga...

We studied the effects of irbesartan, a selective angiotensin II type 1 receptor antagonist, on human ether-a-go-go-related gene (HERG), KvLQT1+minK, hKv1.5, and Kv4.3 channels using the patch-clamp technique. Irbesartan exhibited a low affinity for HERG and KvLQT1+minK channels (IC(50) = 193.0 +/- 49.8 and 314.6 +/- 85.4 microM, respectively). In hKv1.5 channels, irbesartan produced two types ...

OBJECTIVES The primary purpose of this study was to determine the acute and long-term hemodynamic and clinical effects of irbesartan in patients with heart failure. BACKGROUND Inhibition of angiotensin II production by angiotensin-converting enzyme (ACE) inhibitors reduces morbidity and mortality in patients with heart failure. Irbesartan is an orally active antagonist of the angiotensin II A...

Metabolism and disposition of irbesartan, an angiotensin II AT(1) receptor antagonist, were investigated in mice, rats, rabbits, and macaques. In both rats and macaques, irbesartan was characterized by a rapid oral absorption, a large volume of distribution, a low plasma clearance, and a long terminal half-life. The oral bioavailability in macaques was notably higher than in rats. Irbesartan wa...