The purpose of this review is to analyze current medical strategies in the prevention of ovarian hyperstimulation syndrome (OHSS) during ovarian stimulation for in vitro fertilization. Owing to contemporary preventive measures of OHSS, the incidence of moderate and severe forms of the syndrome varies between 0.18% and 1.40%. Although none of medical strategies is completely effective, there is ...

To determine whether injection of hCG or GnRH-agonist on d 5 after estrus (d 0) has a differential functional effect on an induced and the original corpus luteum (CL), two experiments were conducted. In Exp. 1, nonlactating Holstein cows were injected on d 5 with saline (n = 4; T1), a GnRHagonist (Buserelin, 8 mg i.m.; n = 4; T2), or hCG (1,000 IU, i.v., and 2,000 IU, i.m.; n = 4; T3). Induced...

Gonadotropin-releasing hormone (GnRH) has been found to be expressed within the ovary and to modulate cell differentiation in ovarian cells. In the present study we have analyzed the influence of GnRH on DNA synthesis in rat granulosa cells. Cells were obtained from immature DES-treated rats and cultured in defined medium (DMEM:F12) containing combinations of FSH, estradiol, and transforming gr...

This study was designed to determine the effects of a vaginal micronized progesterone preparation on bleeding patterns and pregnancy outcomes after in-vitro fertilization and intracytoplasmic sperm injection (IVF-ICSI). The study population consisted of 149 consecutive women who had undergone IVF-ICSI using 'long-protocol' stimulation with buserelin-human menopausal gonadotrophin (HMG). A retro...