JOURNAL ARTICLE

Controlled ovarian hyperstimulation using multi-dose gonadotropin-releasing hormone (GnRH) antagonist results in less systemic inflammation than the GnRH-agonist long protocol

Raoul Orvieto, Michael Volodarsky, Eduard Hod, Roy Homburg, Jacob Rabinson, Efraim Zohav, Eyal Y Anteby, Simion Meltcer
Gynecological Endocrinology 2007, 23 (8): 494-6
17852411

OBJECTIVE: The aim of the study was to investigate whether controlled ovarian hyperstimulation (COH) using multi-dose gonadotropin-releasing hormone (GnRH) antagonist results in a lesser degree of systemic inflammation than the GnRH-agonist long protocol.

DESIGN: Prospective, observational study.

PATIENTS AND METHODS: Blood was drawn three times during the COH cycle from patients undergoing the long GnRH-agonist protocol (agonist group) (n = 12) or the multi-dose GnRH-antagonist protocol (antagonist group) (n = 15): the day on which adequate suppression was obtained (agonist group), or day 2 or 3 of the menstrual cycle and before gonadotropin treatment (antagonist group) (Day-0); the day of or prior to administration of human chorionic gonadotropin (Day-hCG); and the day of ovum pick-up (Day-OPU). Levels of sex steroids and serum C-reactive protein (CRP) were compared between the two study groups among the three time points.

RESULTS: While no between-group differences were observed in patient age or ovarian stimulation characteristics, a significantly higher number of oocytes were retrieved in the antagonist compared with the agonist group. In both groups, serum CRP levels were significantly higher on Day-OPU than on Day-hCG and Day-0. While serum CRP levels were higher on Day-hCG than Day-0, the difference was statistically significant only for the agonist group (p < 0.05). Moreover, Day-OPU serum CRP levels were significantly higher in the agonist than in the antagonist subgroup.

CONCLUSION: COH using the multi-dose GnRH-antagonist protocol yields a lesser degree of systemic inflammation, as reflected by CRP levels, than the GnRH-agonist long protocol.

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