SLC5A1 and hydrops fetalis: In rats with pressure and volume overload-induced HF, LV SGLT1 protein expression significantly correlated with the extent of myocardial 3-NT positivity (TAC and ACF: rs = 0.818, p = 0.006) (Figure 5C) and with 4-HNE positivity (TAC and ACF: rs = 0.733, p = 0.020) (Figure 5D), indicating a robust association between SGLT1 protein expression and the level of nitro-oxidative stress in HF.