Key result
Right atrium exhibits ~3-fold more abundantly expressed genes than left ventricle, supporting non-muscle genetic studies.
Why the study?
Different parts of the human heart have different functions, and gene expression profiles likely differ between these parts, but ventricular tissue is hard to obtain for study.
How do global gene expression profiles compare between the right atrium and left ventricle in human cardiac tissue?
Observational (n=5)
How do global gene expression profiles compare between the right atrium and left ventricle in human cardiac tissue?
Gene expression profiles differ significantly between the right atrium and left ventricle, suggesting right atrial biopsies are suitable for studying immunity and defense but not ventricular contractile function.
Authors
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Right atrial biopsies may suit non-contractile gene studies; leaves open ventricular contractile relevance in clinical translation.
Asp et al. (2011) conducted an observational in Undergoing aortic valve replacement or coronary artery bypass grafting (n=5). Right atrium tissue vs. Left ventricle tissue was evaluated on Global gene expression differences. Right atrium tissue exhibited 416 abundantly expressed genes compared to 126 in the left ventricle, suggesting right atrial biopsies are suitable for genetic studies not related to muscle work.
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