PPARδ activation induced Mfn2 expression in cultured rat neonatal cardiomyocytes: A) Real Time PCR measurement of Mfn2 transcript normalized to β-actin transcript in samples from cultured cardiomyocytes treated with a PPARδ-selective ligand, GW0742 (5 μM in DMSO) or with DMSO. Data are expressed as mean±SEM, n=5, *P<0.05. B) Real Time PCR measurement of Mfn2 transcript normalized to β-actin transcript in samples from cultured cardiomyocytes treated with a PPARα-selective ligand, WY14643 (10 μM in DMSO) or with DMSO. Data are expressed as mean±SEM, n=5, P>0.05.