gonadotropin-releasing hormone agonist
Also written as: GnRH agonist — Gonadotropin-Releasing Hormone Agonist
Synthetic hormone that initially stimulates then suppresses natural reproductive hormone production.
Full Definition
Gonadotropin-releasing hormone agonists (GnRH agonists) are synthetic versions of the naturally occurring hormone that regulates reproductive function. When administered continuously, these medications initially cause a surge in luteinizing hormone and follicle-stimulating hormone production, followed by downregulation and suppression of the pituitary-gonadal axis. This mechanism is utilized in reproductive endocrinology for various purposes including endometriosis treatment, uterine fibroid management, and as part of controlled ovarian hyperstimulation protocols in assisted reproductive technology. Common examples include leuprolide, goserelin, and nafarelin.
Usage
Usage note: Distinguish clearly from GnRH antagonists, which have different mechanisms of action.
In Context
- "The gonadotropin-releasing hormone agonist effectively suppressed endogenous hormone production prior to stimulation." — Treatment protocol
- "Long-term use of gonadotropin-releasing hormone agonists requires bone density monitoring." — Clinical guideline