Gonadorelin
Gonadorelin is the synthetic decapeptide with an amino-acid sequence identical to endogenous gonadotropin-releasing hormone (GnRH/LHRH). Historically approved in several countries for diagnostic testing of pituitary function and for fertility indications (pump systems). A defining feature is the opposite effect of pulsatile versus continuous administration: pulsatile stimulates, continuous leads to receptor desensitisation.
Mechanism of action
Gonadorelin acts as an agonist at the GnRH receptor on the gonadotroph cells of the pituitary and triggers release of the gonadotropins luteinizing hormone (LH) and follicle-stimulating hormone (FSH). The temporal pattern of receptor exposure is decisive: pulsatile administration mimics the natural hypothalamic secretory rhythm and sustains LH/FSH release, whereas continuous exposure leads to receptor internalisation and desensitisation with subsequent paradoxical suppression of gonadotropins. The latter principle is exploited therapeutically by longer-acting GnRH agonists.
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Wat de studies laten zien
Waar studies elkaar tegenspreken
Does gonadorelin reliably maintain testicular function during exogenous testosterone therapy?
Farmacokinetiek
Theoretische concentratiecurve bij een halfwaardetijd van 0.1 h. Puur farmacokinetisch model — geen doseringsaanbeveling.
Open in PK tool →Toedieningswegen in de literatuur
Veiliger gebruik & risico's
Bekende bijwerkingen uit studies
Interacties & combinaties
Juridische status per land
Reconstitutie-calculator
Peptiden komen als droog poeder. Eenmaal opgelost in een vloeistof (reconstitutie) beantwoordt deze calculator één enkele vraag: hoeveel stof zit er daarna in één milliliter oplossing?
- 1Voer de hoeveelheid stof van de flacon in (staat op het etiket).
- 2Voer in hoeveel oplosmiddel je toevoegt.
- 3Resultaat = concentratie in mg per mL.
Studieregister
The Pulsatile Gonadorelin Pump Induces Earlier Spermatogenesis Than Cyclical Gonadotropin Therapy in Congenital Hypogonadotropic Hypogonadism Men
Induction of ovulation and fertility in amenorrheic women by pulsatile low-dose gonadotropin-releasing hormone
Pulsatile GnRH or human chorionic gonadotropin/human menopausal gonadotropin as effective treatment for men with hypogonadotropic hypogonadism: a review of 42 cases
Gonadorelin for induction of ovulation
Bronnen & methode
Ontvang nieuwe studies over Gonadorelin
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