The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at http://www.ebi.ac.uk/chebi/. The data is made available under the Creative Commons License (CC BY 3.0, http://creativecommons.org/licenses/by/3.0/). For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.
A 17-oxo steroid that is androst-4-ene-3,17-dione in which the hydrogen at position 4 is replaced by a hydroxy group. Formestane was the first selective, type I steroidal aromatase inhibitor, suppressing oestrogen production from anabolic steroids or prohormones. It was formerly used in the treatment of oestrogen-receptor positive breast cancer in post-meopausal women. As it has poor oral bioavailability, it had to be administered by (fortnightly) intramuscular injection. It fell out of use with the subsequent development of cheaper, orally active aromatase inhibitors. Formestane is listed by the World Anti-Doping Agency as a substance prohibited from use by athletes.
formestane metabolite inhibits the reaction [Dihydrotestosterone results in increased expression of AR mRNA] formestane analog results in increased expression of AR mRNA; formestane metabolite results in increased expression of AR mRNA; formestane results in increased expression of AR mRNA
formestane promotes the reaction [Androstenedione results in increased expression of CYP11A1 mRNA]; formestane promotes the reaction [Testosterone results in increased expression of CYP11A1 mRNA]
formestane inhibits the reaction [Atrazine results in increased activity of CYP19A1 protein]; formestane inhibits the reaction [CYP19A1 protein affects the chemical synthesis of 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine]; formestane inhibits the reaction [CYP19A1 protein affects the metabolism of Methadone]; formestane inhibits the reaction [propazine results in increased activity of CYP19A1 protein]; formestane inhibits the reaction [Simazine results in increased activity of CYP19A1 protein] formestane results in decreased activity of CYP19A1 protein formestane inhibits the reaction [8-Bromo Cyclic Adenosine Monophosphate results in increased activity of CYP19A1 protein]; formestane inhibits the reaction [FSHB protein results in increased activity of CYP19A1 protein]; formestane promotes the reaction [Androstenedione results in increased expression of CYP19A1 mRNA]; formestane promotes the reaction [Testosterone results in increased expression of CYP19A1 mRNA]