The expression of Kv4.3 in CATH.a neurons treated with ANG II. A: group data (real-time RT-PCR) shows the Kv4.3 mRNA expression in CATH.a neurons treated with 100 nM ANG II for 6 h. *P < 0.05 compared with control, repeated 4 times. B, top: representative Western blots showing the downregulation of Kv4.3 protein expression by ANG II (100 nM, 6 h). B, bottom: results of densitometric analysis. *P < 0.05 compared with control, repeated 4 times. Values are means ± SE.