Unloaded heart in vivo replicates fetal gene expression of cardiac hypertrophy.

Abstract:

:The cardiac response to increased work includes a reactivation of fetal genes. The response to a decrease in cardiac work is not known. Such information is of clinical interest, because mechanical unloading can improve the functional capacity of the failing heart. We compared here the patterns of gene expression in unloaded rat heart with those in hypertrophied rat heart. Both conditions induced a re-expression of growth factors and proto-oncogenes, and a downregulation of the 'adult' isoforms, but not of the 'fetal' isoforms, of proteins regulating myocardial energetics. Therefore, opposite changes in cardiac workload in vivo induce similar patterns of gene response. Reactivation of fetal genes may underlie the functional improvement of an unloaded failing heart.

journal_name

Nat Med

journal_title

Nature medicine

authors

Depre C,Shipley GL,Chen W,Han Q,Doenst T,Moore ML,Stepkowski S,Davies PJ,Taegtmeyer H

doi

10.1038/3253

subject

Has Abstract

pub_date

1998-11-01 00:00:00

pages

1269-75

issue

11

eissn

1078-8956

issn

1546-170X

journal_volume

4

pub_type

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