Molecular mechanisms of cardiostimulatory effects of sildenafil.


To better understand the molecular mechanisms of the previously described cardiostimulatory action of the phosphodiesterase type-5 (PDE5) inhibitor sildenafil, we first evaluated its effects on cyclic AMP level in the canine ventricular membrane preparation. Sildenafil (10 micromol/L) significantly increased the net cyclic AMP production rate, the potency… (More)

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