Identification
Name Cetrorelix
Accession Number DB00050 (APRD00686, BIOD00115, BTD00115)
Type small molecule
Description Cetrorelix is a man-made hormone that blocks the effects of Gonadotropin Releasing Hormone (GnRH). GnRH controls another hormone that is called luteinizing hormone (LH), which is the hormone that starts ovulation during the menstrual cycle. When undergoing hormone treatment sometimes premature ovulation can occur, leading to eggs that are not ready for fertilization to be released. Cetrorelix does not allow the premature release of these eggs to occur.
Structure
Categories (*)
Molecular Weight 1431.038
Groups approved
Monoisotopic Weight 1429.669818444
Pharmacology
Indication For the inhibition of premature LH surges in women undergoing controlled ovarian stimulation
Mechanism of action Cetrorelix binds to the gonadotropin releasing hormone receptor and acts as a potent inhibitor of gonadotropin secretion. It competes with natural GnRH for binding to membrane receptors on pituitary cells and thus controls the release of LH and FSH in a dose-dependent manner.
Absorption Rapidly absorbed following subcutaneous injection. The mean absolute bioavailability following subcutaneous administration to healthy female subjects is 85%.
Protein binding 86%
Biotransformation In in vitro studies, cetrorelix was stable against phase I- and phase II-metabolism. Cetrorelix was transformed by peptidases, and the (1-4) peptide was the predominant metabolite.
Route of elimination Following subcutaneous administration of 10 mg cetrorelix to males and females, only unchanged cetrorelix was detected in urine.
Toxicity Not Available
Affected organisms
  • Humans and other mammals
Interactions
Drug Interactions Not Available
Food Interactions Not Available
Gonadotropin-releasing hormone receptor
Name Gonadotropin-releasing hormone receptor
Gene Name GNRHR
Pharmacological action yes
Actions antagonist
References
  • Volker P, Grundker C, Schmidt O, Schulz KD, Emons G: Expression of receptors for luteinizing hormone-releasing hormone in human ovarian and endometrial cancers: frequency, autoregulation, and correlation with direct antiproliferative activity of luteinizing hormone-releasing hormone analogues. Am J Obstet Gynecol. 2002 Feb;186(2):171-9. - Pubmed
  • Zapatero-Caballero H, Sanchez-Franco F, Guerra-Perez N, Fernandez-Mendez C, Fernandez-Vazquez G: Gonadotropin-releasing hormone receptor gene expression during pubertal development of male rats. Biol Reprod. 2003 May;68(5):1764-70. Epub 2002 Dec 11. - Pubmed
  • Zapatero-Caballero H, Sanchez-Franco F, Fernandez-Mendez C, Garcia-San Frutos M, Botella-Cubells LM, Fernandez-Vazquez G: Gonadotropin-releasing hormone receptor gene expression during pubertal development of female rats. Biol Reprod. 2004 Feb;70(2):348-55. Epub 2003 Oct 15. - Pubmed
  • Roth C, Hegemann F, Hildebrandt J, Balzer I, Witt A, Wuttke W, Jarry H: Pituitary and gonadal effects of GnRH (gonadotropin releasing hormone) analogues in two peripubertal female rat models. Pediatr Res. 2004 Jan;55(1):126-33. Epub 2003 Nov 6. - Pubmed
  • Castellon E, Clementi M, Hitschfeld C, Sanchez C, Benitez D, Saenz L, Contreras H, Huidobro C: Effect of leuprolide and cetrorelix on cell growth, apoptosis, and GnRH receptor expression in primary cell cultures from human prostate carcinoma. Cancer Invest. 2006 Apr-May;24(3):261-8. - Pubmed
  • Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. - Pubmed
DTHybrid score 1.661
Lutropin-choriogonadotropic hormone receptor
Name Lutropin-choriogonadotropic hormone receptor
Gene Name LHCGR
Pharmacological action unknown
Actions Not Available
References
  • Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. - Pubmed
  • Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. - Pubmed
  • Ascoli M, Fanelli F, Segaloff DL: The lutropin/choriogonadotropin receptor, a 2002 perspective. Endocr Rev. 2002 Apr;23(2):141-74. - Pubmed
DTHybrid score 1.3643