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A high-fat diet during rat pregnancy or suckling induces cardiovascular dysfunction in adult offspring

Khan, I. Y., Dekou, V., Douglas, G., Jensen, R., Hanson, M. A., Poston, L. and Taylor, P. D. (2005) A high-fat diet during rat pregnancy or suckling induces cardiovascular dysfunction in adult offspring American Journal of Physiology- Regulatory, Integrative and Comparative Physiology, 288, (1), R127-R133. (doi:10.1152/ajpregu.00354.2004).

Record type: Article

Abstract

Epidemiological and animal studies suggest that diet-induced epigenetic modifications in early life can contribute to development of the metabolic syndrome in adulthood. We previously reported features of the metabolic syndrome in adult offspring of rats fed a diet rich in animal fat during pregnancy and suckling. We now report a study to compare the relative effects of high-fat feeding during 1) pregnancy and 2) the suckling period in the development of these disorders. As observed previously, 6-mo-old female offspring of fat-fed dams suckled by the same fat-fed dams (OHF) demonstrated raised blood pressure, despite being fed a balanced diet from weaning. Female offspring of fat-fed dams "cross fostered" to dams consuming a control diet during suckling (OHF/C) demonstrated raised blood pressure compared with controls (OC) [systolic blood pressure (SBP; mmHg) means ± SE: OHF/C, 132.5 ± 3.0, n = 6 vs. OC, 119.0 ± 3.8, n = 7, P < 0.05]. Female offspring of controls cross fostered to dams consuming the fat diet (OC/HF) were also hypertensive [SBP (mmHg) 131.0 ± 2.5 mmHg, n = 6 vs. OC, P < 0.05]. Endothelium-dependent relaxation (EDR) of male and female OHF and OHF/C mesenteric small arteries was similar and blunted compared with OC (P < 0.001). OC/HF arteries showed profoundly impaired EDR (OC/HF vs. OHF, P < 0.001). OHF/C and OC/HF demonstrated hyperinsulinemia and increased adiposity. Features of the metabolic syndrome in adult offspring of fat-fed rats can be acquired both antenatally and during suckling. However, exposure during pregnancy confers adaptive protection against endothelial dysfunction induced by maternal fat feeding during suckling.

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More information

Submitted date: 1 June 2004
Published date: January 2005
Keywords: blood pressure, endothelium, developmental programming

Identifiers

Local EPrints ID: 25720
URI: http://eprints.soton.ac.uk/id/eprint/25720
ISSN: 0363-6119
PURE UUID: 2c23e7ef-d6fe-450d-9cf3-2acf4ba425a0

Catalogue record

Date deposited: 07 Apr 2006
Last modified: 17 Jul 2017 16:09

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Contributors

Author: I. Y. Khan
Author: V. Dekou
Author: G. Douglas
Author: R. Jensen
Author: M. A. Hanson
Author: L. Poston
Author: P. D. Taylor

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