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Learn MoreThe early events that signal renal dysfunction in presymptomatic heart failure are unclear. To evaluate this, we performed RNA-seq on kidneys from transgenic mice with cardiac-specific overexpression of mutant alpha-B-crystallin, which develop slowly progressive cardiomyopathy. Presymptomatic transgenic mice display an increase in serum creatinine and in urinary neutrophil gelatinase-associated lipocalin (NGAL), but lack chronic interstitial fibrosis. Presymptomatic transgenic mouse kidneys exhibited a worsened response to ischemia-reperfusion injury based on serum creatinine, urine NGAL, tubule dilation and cast score, and apoptosis. Our findings demonstrate functional renal impairment, urinary biomarker elevations, and gene expression changes that occur in early presymptomatic heart failure, which dramatically increase the susceptibility to subsequent acute kidney injury. SOURCE: Keri,Anne,Drake (keri.drake@cchmc.org) - Potter Cincinnati Children's Hospital Medical Center
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