Gonadotropin therapy in assisted reproduction: an evolutionary perspective from biologics to biotech.
Gonadotropin therapy plays an integral role in ovarian stimulation for infertility treatments. Efforts have been made over the last century to improve gonadotropin preparations. Undoubtedly, current gonadotropins have better quality and safety profiles as well as clinical efficacy than earlier ones. A major achievement has been introducing recombinant technology in the manufacturing processes for follicle-stimulating hormone, luteinizing hormone, and human chorionic gonadotropin. Recombinant gonadotropins are purer than urine-derived gonadotropins, and incorporating vial filling by mass virtually eliminated batch-to-batch variations and enabled accurate dosing. Recombinant and fill-by-mass technologies have been the driving forces for launching of prefilled pen devices for more patient-friendly ovarian stimulation. The most recent developments include the fixed combination of follitropin alfa + lutropin alfa, long-acting FSH gonadotropin, and a new family of prefilled pen injector devices for administration of recombinant gonadotropins. The next step would be the production of orally bioactive molecules with selective follicle-stimulating hormone and luteinizing hormone activity.
Referral Center for Male Reproduction, Andrology & Human Reproduction Clinic (ANDROFERT), Campinas, SP, Brazil.
Rogério de Barros F
Rde B
Leão
Referral Center for Male Reproduction, Andrology & Human Reproduction Clinic (ANDROFERT), Campinas, SP, Brazil.
Sandro C
SC
Esteves
D006063:Chorionic Gonadotropin / Q000627:therapeutic use*; D005260:Female; D005640:Follicle Stimulating Hormone / Q000627:therapeutic use*; D006801:Humans; D007246:Infertility / Q000628:therapy; D007986:Luteinizing Hormone / Q000627:therapeutic use*; D010062:Ovulation Induction / Q000379:methods* / Q000639:trends
D006063:Chorionic Gonadotropin; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone