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International Journal of Vascular Medicine
Volume 2014 (2014), Article ID 876527, 8 pages
http://dx.doi.org/10.1155/2014/876527
Research Article

Vascular Response to Graded Angiotensin II Infusion in Offspring Subjected to High-Salt Drinking Water during Pregnancy: The Effect of Blood Pressure, Heart Rate, Urine Output, Endothelial Permeability, and Gender

1Water & Electrolytes Research Center, Isfahan University of Medical Sciences, Isfahan 81745, Iran
2Department of Physiology, Isfahan University of Medical Sciences, Isfahan 81745, Iran
3Isfahan MN Institute of Basic & Applied Sciences Research, Isfahan 81546, Iran

Received 28 December 2013; Revised 10 March 2014; Accepted 13 March 2014; Published 17 April 2014

Academic Editor: Aaron S. Dumont

Copyright © 2014 Zahra Pezeshki et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Introduction. Rennin-angiotensin system and salt diet play important roles in blood pressure control. We hypothesized that the high-salt intake during pregnancy influences the degree of angiotensin-dependent control of the blood pressure in adult offspring. Methods. Female Wistar rats in two groups (A and B) were subjected to drink tap and salt water, respectively, during pregnancy. The offspring were divided into four groups as male and female offspring from group A (groups 1 and 2) and from group B (groups 3 and 4). In anesthetized matured offspring mean arterial pressure (MAP), heart rate and urine output were measured in response to angiotensin II (AngII) (0-1000 ng/kg/min, iv) infusion. Results. An increase in MAP was detected in mothers with salt drinking water (). The body weight increased and kidney weight decreased significantly in male offspring from group 3 in comparison to group 1 (). MAP and urine volume in response to AngII infusion increased in group 3 (). These findings were not observed in female rats. Conclusion. Salt overloading during pregnancy had long-term effects on kidney weight and increased sex-dependent response to AngII infusion in offspring (adult) that may reveal the important role of diet during pregnancy in AngII receptors.