Aim To elucidate the relation between NADPH oxidase Nox4 and the protective effect of fenofribate against cardiac hypertrophy. Methods Abdominal aorta coarctation(AAC)-induced hypertensive rats were constructed to observe the effect of fenofribate on left ventricular hypertrophy. Results Fenofribate could inhibit left ventricular hypertrophy in AAC-induced hypertensive rats. Compared with sham group,the mRNA and protein levels of NADPH oxidase Nox4 were significantly elevated in left ventricular tissue of A...