The hemodynamic effects of an oral angiotensin-converting enzyme inhibitor, captopril, were evaluated in 10 symptomatic patients with chronic congestive heart failure. In all patients there was a significant increase in cardiac output (average 28%), stroke volume (49%), and stroke work index (26%), along with a decrease in pulmonary capillary wedge pressure (48%), indicating improved left ventr...

OBJECTIVES This study was conducted to determine whether the blood pressure-lowering effect of Nigella sativa might be mediated by its effects on nitric oxide, angiotensin-converting enzyme, heme oxygenase and oxidative stress markers. METHODS Twenty-four adult male Sprague-Dawley rats were divided equally into 4 groups. One group served as the control (group 1), whereas the other three group...

The effects of angiotensin-converting enzyme inhibitor (CEI) SQ14225 on infarct size and regional myocardial blood flow were studied in 21 anesthetized dogs subjected to 6 hours of coronary occlusion. An area of myocardium at risk of necrosis was determined in vivo after 15 minutes of coronary occlusion but before CEI treatment (AR1) using an autoradiographic technique and after treatment after...

ACE inhibitors have achieved widespread usage in the treatment of cardiovascular and renal disease. ACE inhibitors alter the balance between the vasoconstrictive, salt-retentive, and hypertrophic properties of angiotensin II (Ang II) and the vasodilatory and natriuretic properties of bradykinin and alter the metabolism of a number of other vasoactive substances. ACE inhibitors differ in the che...

The study of experimental hypertension and the development of drugs with selective inhibitory effects on the enzymes and receptors constituting the components of the circulating and tissue renin-angiotensin systems have led to newer concepts of how this system participates in both physiology and pathology. Over the last decade, a renewed emphasis on understanding the role of angiotensin-(1-7) a...

Angiotensin III is formed from des-Asp1 -angiotensin I by angiotensin-converting enzyme. The Km (11 muM) of the reaction is one-third of that for the conversion of angiotensin I into angiotensin II. As suggested by the Km values, bradykinin, peptide BPP9a and angiotensins II and III are better inhibitors of the formation of angiotensin II than of the formation of angiotensin III.

Angioedema associated with angiotensin converting enzyme inhibitors is a rare adverse reaction. It commonly involves the face, oropharyngeal and laryngeal tissues. To our knowledge, angioedema of the abdominal viscera related to angiotensin converting enzyme inhibitors has not been reported previously. We present a rare case of a patient who had episodes angioedema and abdominal pain with ascit...

I read with interest the recent review article by de Albuquerque et al1 published in the Arquivos Brasileiros de Cardiologia entitled “Angiotensin-converting enzyme genetic polymorphism: its impact on cardiac remodeling.” They showed that the DD genotype of Angiotensin-converting enzyme (ACE) gene polymorphism was independently associated with worse echocardiographic outcome, while the DI genot...