Genetic expression profiles during physiological and pathological cardiac hypertrophy and heart failure in rats

Kong, Bodyak, Yue, Liu, Brown, Izumo, Kang. Genetic expression profiles during physiological and pathological cardiac hypertrophy and heart failure in rats. Physiol GenomicsPhysiol GenomicsPhysiol Genomics. 2005;21:34–42.

NOTES

Kong, Sek WonBodyak, NatalyaYue, PatrickLiu, ZhilinBrown, JeffreyIzumo, SeigoKang, Peter MengR01 AG017008/AG/NIA NIH HHS/U01-HL-66582/HL/NHLBI NIH HHS/Research Support, N.I.H., ExtramuralResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.2004/12/30 09:00Physiol Genomics. 2005 Mar 21;21(1):34-42. Epub 2004 Dec 28.

Abstract

Cardiac hypertrophy is a complex and nonhomogenous response to various stimuli. In this study, we used high-density oligonucleotide microarray to examine gene expression profiles during physiological hypertrophy, pathological hypertrophy, and heart failure in Dahl salt-sensitive rats. There were changes in 404/3,160 and 874/3,160 genes between physiological and pathological hypertrophy and the transition from hypertrophy to heart failure, respectively. There were increases in stress response genes (e.g., heat shock proteins) and inflammation-related genes (e.g., pancreatitis-associated protein and arachidonate 12-lipoxygenase) in pathological processes but not in physiological hypertrophy. Furthermore, atrial natriuretic factor and brain natriuretic protein showed distinctive changes that are very specific to different conditions. In addition, we used a resampling-based gene score-calculating method to define significantly altered gene clusters, based on Gene Ontology classification. It revealed significant alterations in genes involved in the apoptosis pathway during pathological hypertrophy, suggesting that the apoptosis pathway may play a role during the transition to heart failure. In addition, there were significant changes in glucose/insulin signaling, protein biosynthesis, and epidermal growth factor signaling during physiological hypertrophy but not during pathological hypertrophy.
Last updated on 02/25/2023