SCNN1B and preeclampsia: As shown in Figure 5A, Real-time PCR result showed that expression of ENaCβ was significantly lower in placenta from preeclampsia patients (ROD value 0.6021±0.03824, n = 48) than that from normal pregnancy (ROD value 0.9340±0.04686, n = 44; P<0.05; Figure 5A).