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Fertilization and Mouse Embryo Development in the Presence of Midazolam

Department of Biological Sciences, Old Dominion University, Norfolk, Virginia

Abstract

Mouse embryo in vitro development elucidates the effect of a pharmacologic agent on cellular differentiation. Midazolam provides conscious sedation for patients undergoing egg retrieval for in vitro fertilization and is found in patient follicular fluid. Mouse preimplantation embryo formation and development were evaluated in the presence of midazolam. Midazolam was cocultured with two-cell mouse preimplantation embryos over 72 h and injected systemi-cally just before ovulation and coitus. Concentrations to 12.5 /xg/mL displayed no significant toxic effects on in vitro two-cell-to-blastocyst development. Doses to 35.0 mg/kg did not prevent or impair in vivo fertilization. Midazolam has no adverse effect on in vitro development of two-cell-to-blastocyst-stage embryos nor on in vivo fertilization and cell division at concentrations approximating and exceeding those that ova are exposed to during clinical anesthesia. Midazolam is recommended for use to induce sedation in human in vitro fertilization where association with gametes and zygotes is probable.

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