Abstract:
:We aimed to identify genetic variants associated with heart failure by using a rat model of the human disease. We performed invasive cardiac hemodynamic measurements in F2 crosses between spontaneously hypertensive heart failure (SHHF) rats and reference strains. We combined linkage analyses with genome-wide expression profiling and identified Ephx2 as a heart failure susceptibility gene in SHHF rats. Specifically, we found that cis variation at Ephx2 segregated with heart failure and with increased transcript expression, protein expression and enzyme activity, leading to a more rapid hydrolysis of cardioprotective epoxyeicosatrienoic acids. To confirm our results, we tested the role of Ephx2 in heart failure using knockout mice. Ephx2 gene ablation protected from pressure overload-induced heart failure and cardiac arrhythmias. We further demonstrated differential regulation of EPHX2 in human heart failure, suggesting a cross-species role for Ephx2 in this complex disease.
journal_name
Nat Genetjournal_title
Nature geneticsauthors
Monti J,Fischer J,Paskas S,Heinig M,Schulz H,Gösele C,Heuser A,Fischer R,Schmidt C,Schirdewan A,Gross V,Hummel O,Maatz H,Patone G,Saar K,Vingron M,Weldon SM,Lindpaintner K,Hammock BD,Rohde K,Dietz R,Cook SA,Scdoi
10.1038/ng.129subject
Has Abstractpub_date
2008-05-01 00:00:00pages
529-37issue
5eissn
1061-4036issn
1546-1718pii
ng.129journal_volume
40pub_type
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