The cyclic nucleotide phosphodiesterase 4 (PDE4) regulates the hydrolysis of the second messenger cyclic AMP. cAMP is a major intracellular signalling mediator that directly affects the activity ...

The study's primary goal is to assess the therapy’s tolerability, pharmacokinetics and safety in healthy volunteers.

The introduction of inhibitors of the cyclic GMP phosphodiesterase (PDE) 5 into clinical urology is mainly the result of the characterization of the physiology of nonvascular and vascular penile ...