Human Reproduction, Vol. 16, No. 4, 676-682,
April 2001
© 2001 European Society of Human Reproduction and Embryology
Effects of human hydrosalpinx fluid on in-vitro murine fertilization
Clinique de Stérilité et d'Endocrinologie Gynécologique, Département de Gynécologie et d'Obstétrique, Maternité, Hôpitaux Universitaires de Genève, Geneva, Switzerland
Patients with hydrosalpinges show a decrease of both fertility and clinical outcome of IVF and embryo transfer treatment. Several reports have demonstrated the negative effects of hydrosalpinx fluid (HSF) on embryo development and implantation. The aim of this study was to determine whether human HSF, collected from infertile patients, might exhibit a deleterious effect on gametes and fertilization using a murine IVF system. Murine gametes were co-incubated during IVF until first cleavage with human HSF diluted to 50% from four patients (HSF1–4). It was demonstrated that HSF affected fertilization, as determined by the count of the 2-cell embryos. Pre-incubation of spermatozoa with HSF during capacitation significantly lowered the percentage of 2-cell embryos (P < 0.05). While HSF1–3 had no significant effect on motility and viability of spermatozoa, HSF4 almost completely affected their survival. In contrast, pre-incubation of ovulated oocytes surrounded by their cumulus cells with HSF before IVF did not impede first cleavage. Taken together, these results suggest that HSF has a cytotoxic effect on spermatozoa and/or impairs the fertilization process, probably by altering capacitation/acrosome reaction and/or ligand(s)–receptor(s) interactions. Hydrosalpinges may be partly associated with sterility through HSF inhibitory effects on fertilization.
Key words: embryo/hydrosalpinx fluid/IVF/oocyte/spermatozoa
1 To whom correspondence should be addressed at: Clinique de Stérilité et d'Endocrinologie Gynécologique, Département de Gynécologie et d'Obstétrique, Maternité, Hôpitaux Universitaires de Genève, 30, bd de la Cluse, 1211 Geneva 14, Switzerland.E-mail: Corrine.deVantery{at}heuge.ch
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