PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20057984-9 2010 Particularly testosterone might be a helpful supportive therapy in cases where PDE-5 antagonists have tended to lose their effectiveness on the erectile tissue in the treatment of ED. Testosterone 13-25 phosphodiesterase 5A Homo sapiens 79-84