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Cholesterol diet-induced hyperlipidemia influences gene expression pattern of rat hearts: a DNA microarray study
László G Puskás1, Zsolt B Nagy, Zoltán Giricz
1Laboratory of Functional Genomics, Biological Research Center, Hungarian Academy of Sciences, Szeged, Hungary.
FEBS Letters
|March 27, 2004
Summary
A cholesterol-enriched diet alters gene expression in rat hearts, impacting cardiovascular health. This study identifies specific genes involved in hyperlipidemia
Area of Science:
- Cardiovascular Biology
- Molecular Biology
- Genomics
Background:
- Hyperlipidemia, often induced by diet, poses significant risks for cardiovascular diseases.
- The direct impact of hyperlipidemia on cardiac gene expression remains incompletely understood.
Purpose of the Study:
- To comprehensively profile gene expression changes in the heart resulting from a cholesterol-enriched diet.
- To identify specific genes and pathways affected by diet-induced hyperlipidemia in cardiac tissue.
Main Methods:
- Global gene expression profiling using DNA microarray analysis of 3200 genes in rat hearts.
- Validation of selected gene expression changes using real-time quantitative polymerase chain reaction (RT-qPCR).
Main Results:
- Significant alterations in the expression of 51 genes were observed in hearts of rats fed a cholesterol-enriched diet for 8 weeks.
- Upregulated and downregulated genes included those involved in extracellular matrix remodeling, cellular structure, and metabolic processes.
- Identified genes such as procollagen type III, fibronectin receptor beta chain, and various metabolic enzymes showed altered expression.
Conclusions:
- Diet-induced hyperlipidemia directly affects myocardial gene expression profiles in rats.
- This study reveals novel genes and pathways potentially involved in the cardiac consequences of hyperlipidemia, paving the way for further research into cardiovascular disease mechanisms.