Pharmacokinetic/pharmacodynamic modeling of luteinizing hormone (LH) suppression and LH surge delay by cetrorelix after single and multiple doses in healthy premenopausal women.

Cetrorelix (CET) is a potent luteinizing hormone-releasing hormone (LH-RH) antagonist and is used to prevent premature ovulation in IVF (in vitro fertilization) procedures. The objective of the present study was to develop a pharmacokinetic/pharmacodynamic (PK/PD) model for the LH suppression and LH surge delay after single doses (SD) and multiple doses (MD) of CET in healthy premenopausal women without ovarian stimulation. CET was given by subcutaneous route (SD, 0.

Novel formulations of cetrorelix acetate in healthy men: pharmacodynamic effects and noncompartmental pharmacokinetics.

The objective of this study was to investigate the effects on the pharmacodynamics and noncompartmental pharmacokinetics after weekly subcutaneous administration of novel formulations of cetrorelix acetate in healthy men. In a randomized parallel-group study, single subcutaneous doses of cetrorelix acetate (concentration: 2.5 mg peptide base/ml) dissolved in aqueous gluconic acid (CET/glu, dose: 5 or 10 mg peptide base) or in water (CET/wat, dose: 10 mg peptide base) were given to 36 subjects once weekly in the morning for 4 weeks.

Plasma and follicular fluid concentrations of LHRH antagonist cetrorelix (Cetrotide) in controlled ovarian stimulation for IVF.

Cetrorelix was administered in differing daily dosages for controlled ovarian stimulation. The dosage levels were 3 mg (9 cycles), 1 mg (19 cycles), 0.5 mg (43 cycles), 0.

Pharmacokinetic and pharmacodynamic modeling of cetrorelix, an LH-RH antagonist, after subcutaneous administration in healthy premenopausal women.

Purpose: The purpose of this study was the development of pharmacokinetic and pharmacodynamic models for the luteinizing hormone (LH) suppression and subsequent shift in LH surge and follicle-stimulating hormone by cetrorelix in women.

Background: Cetrorelix is a potent luteinizing hormone-releasing hormone (LH-RH) antagonist and is used for the prevention of the premature ovulation indicated by an LH surge in in vitro fertilization. The pharmacokinetic and pharmacodynamic relationship for the suppression and the shift in the LH surge has not yet been established.

Pharmacodynamic effects and plasma pharmacokinetics of single doses of cetrorelix acetate in healthy premenopausal women.

Objective: To investigate the pharmacodynamic effects and plasma pharmacokinetics of single subcutaneous doses of cetrorelix acetate in healthy premenopausal women.

Setting: Phase I clinical research unit.

Patient(s): Healthy, premenopausal women aged 19 to 35 years.