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  • Title: [Efficacy and endocrinological analysis of combined buserelin-pure FSH-hCG therapy in patients with polycystic ovary syndrome].
    Author: Ohkura T, Watabe H, Horinaka T, Segawa Y, Hayashi M, Yaoi Y.
    Journal: Nihon Sanka Fujinka Gakkai Zasshi; 1994 Oct; 46(10):1013-9. PubMed ID: 7814930.
    Abstract:
    The study was designed to investigate the efficacy of combined buserelin-pure FSH-hCG therapy in patients with polycystic ovary syndrome (PCO) and to analyse its underlying hormonal changes. Buserelin was intranasally administered daily to 13 patients (35 cycles) for 4-10 weeks with a mean week of 5.4 +/- 1.6 (SD), followed by concomitant pure FSH administration. Out of the 13 patients, 8 were the ones who had experienced ovarian hyperstimulation syndrome (OHSS) using pure FSH alone. Hormonal analyses were performed on these 8 patients. This combined regimen resulted in a 97.1% ovulation rate (34/35) and a 37.1% incidence rate of OHSS (13/35). In 4 out of the 8 patients who had experienced OHSS, no OHSS was observed in the first cycle of the therapy. Eight patients became pregnant with the therapy. Excluding one patient whose husband had oligozoospermia, 7 patients conceived at the first cycle of the therapy and the pregnancy rate per cycle was 25.0% (7/28). No abortion or multiple pregnancy was observed in any of the 8 cases. Pretreatment with buserelin resulted in significantly decreased serum LH, FSH, LH/FSH ratio, estradiol (E2), testosterone (T), and androstenedione (ASD). Serum E2, T and ASD levels at both preovulatory and midluteal phases were significantly lower with the combined regimen than with pure FSH alone. These results indicate that this combined regimen improves the characteristic endocrine profile of PCO and enables pure FSH to achieve ovulation regularly with a high pregnancy rate, although it does not always inhibit OHSS.
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