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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/9036

Title: High sodium intake increases blood pressure and alters renal function in intrauterine growth-retarded rats
Authors: Sanders, MW
Fazzi, GE
Janssen, GMJ
Blanco, CE
Issue Date: 2005
Citation: HYPERTENSION, 46(1). p. 71-75
Abstract: A suboptimal fetal environment increases the risk to develop cardiovascular disease in the adult. We reported previously that intrauterine stress in response to reduced uteroplacental blood flow in the pregnant rat limits fetal growth and compromises renal development, leading to an altered renal function in the adult offspring. Here we tested the hypothesis that high dietary sodium intake in rats with impaired renal development attributable to intrauterine stress, results in increased blood pressure, altered renal function, and organ damage. In rats, intrauterine stress was induced by bilateral ligation of the uterine arteries at day 17 of pregnancy. At the age of 12 weeks, the offspring was given high-sodium drinking water ( 2% sodium chloride). At the age of 16 weeks, rats were instrumented for monitoring of blood pressure and renal function. After intrauterine stress, litter size and birth weight were reduced, whereas hematocrit at birth was increased. Renal blood flow, glomerular filtration rate, and the glomerular filtration fraction were increased significantly after intrauterine stress. High sodium intake did not change renal function and blood pressure in control animals. However, during high sodium intake in intrauterine stress offspring, renal blood flow, glomerular filtration rate, and the filtration fraction were decreased, and blood pressure was increased. In addition, these animals developed severe albuminuria, an important sign of renal dysfunction. Thus, a suboptimal fetal microenvironment, which impairs renal development, results in sodium-dependent hypertension and albuminuria.
Notes: Univ Maastricht, Cardiovasc Res Inst Maastricht, Dept Pharmacol & Toxicol, NL-6200 MD Maastricht, Netherlands. Transnatl Univ Limburg, Sch Life Sci, Diepenbeek, Belgium. Univ Maastricht, Dept Pediat, Maastricht, Netherlands.
URI: http://hdl.handle.net/1942/9036
ISI #: 000230012700016
ISSN: 0194-911X
Category: A1
Type: Journal Contribution
Validation: ecoom, 2006
Appears in Collections: Research publications

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