Heart atria and kidney medulla were collected from animals perfused with ice-cold PBS dissolved in UltraPure DEPC-treated water to minimize degradation of RNA. The tissues were immediately stored separately in RNAlater solution at 4ºC. After 24h, the tissue samples were transferred to -80ºC for storage until analyses. RNA was extracted using TRIzol Reagent and RNeasy Kit following the manufacturer's protocol. RNA integrity was checked on an Agilent Technologies 2100 Bioanalyzer. RNA-seq libraries were prepared using the Illumina TruSeq stranded mRNA Library Prep Kit.