iScience | VOL. 25
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Combined metabolomic and transcriptomic profiling approaches reveal the cardiac response to high-fat diet

Publication Date May 1, 2022

Abstract

The response of vital organs to different types of nutrition or diet is a fundamental question in physiology. We examined the cardiac response to 4weeks of high-fat diet in mice, measuring cardiac metabolites and mRNA. Metabolomics showed dramatic differences after a high-fat diet, including increases in several acyl-carnitine species. The RNA-seq data showed changes consistent with adaptations to use more fatty acid as substrate and an increase in the antioxidant protein catalase. Changes in mRNA were correlated with changes in protein level for several highly responsive genes. We also found significant sex differences in both metabolomics and RNA-seq datasets, both at baseline and after high fat diet. This work reveals the response of a vital organ to dietary intervention at both metabolomic and transcriptomic levels, which is a fundamental question in physiology. This work also reveals significant sex differences in cardiac metabolites and gene expression.

Concepts
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Question In Physiology
High-fat Diet
High-fat Diet In Mice
Changes In Protein Level
Acyl-carnitine Species
Diet In Mice
Changes In mRNA
Significant Sex Differences
Significant Differences In Gene Expression
RNA-seq Datasets

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