Cardiovascular effects of angiotensin A: a novel peptide of the renin-angiotensin system.

Introduction: Angiotensin (Ang) A was first identified in human plasma and it differs from Ang II in Ala(1) instead of Asp(1). Here, we hypothesized that the actions of this peptide might explain, at least partially, the limited effects of AT1R antagonists in certain cardiovascular diseases.

Materials And Methods: The effects of Ang A and Ang II on blood pressure (BP) and heart function were compared.

Ischemia-reperfusion histopathology alterations of the rabbit intestinal wall with and without ischemic preconditioning.

Purpose: To evaluate the histopathology alterations of the intestinal mucosa of rabbits submitted to mesenteric artery ischemia and reperfusion with and without ischemic preconditioning.

Methods: Two groups of ten male New Zealand white rabbits body (weight 2.2-3.