PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9398716-10 1997 They also indicate that decreasing serum insulin with metformin reduces ovarian cytochrome P450c17 alpha activity and ameliorates the hyperandrogenism of these women. Metformin 54-63 cytochrome P450 family 17 subfamily A member 1 Homo sapiens 91-98