PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11557915-1 2001 BACKGROUND: Sildenafil, a treatment for erectile dysfunction, is a specific phosphodiesterase type 5 (PDE 5) inhibitor that enhances nitric oxide (NO)-mediated vasodilation in the corpus cavernosum by inhibiting cyclic guanosine monophosphate breakdown. Cyclic GMP 212-242 phosphodiesterase 5A Homo sapiens 76-100 11557915-1 2001 BACKGROUND: Sildenafil, a treatment for erectile dysfunction, is a specific phosphodiesterase type 5 (PDE 5) inhibitor that enhances nitric oxide (NO)-mediated vasodilation in the corpus cavernosum by inhibiting cyclic guanosine monophosphate breakdown. Cyclic GMP 212-242 phosphodiesterase 5A Homo sapiens 102-107