Could cleaved embryo morphology and morphokinetics be associated with prenatal and neonatal outcomes?

Purpose: To evaluate if morphology and morphokinetics of cleaved embryos affect prenatal and perinatal outcomes.

Methods: This retrospective cohort study included 734 single fresh embryo transfer (SET) from ICSI from January 2014 to December 2020 at the Dijon University Hospital. Using time-lapse technology, embryos were defined as TOP or non-TOP according to morphological/morphokinetic criteria.

Chromosomal abnormalities in oocyte donor candidates: a French survey of over 8,200 karyotypes.

Objective: To study karyotypes of >8,200 oocyte donor candidates in nulliparous or multiparous women compared with a reference population.

Design: A retrospective observational multicentric study.

Setting: University Hospital Centers.

Assessing the influence of distinct culture media on human pre-implantation development using single-embryo transcriptomics.

The use of assisted reproductive technologies is consistently rising across the world. However, making an informed choice on which embryo culture medium should be preferred to ensure satisfactory pregnancy rates and the health of future children critically lacks scientific background. In particular, embryos within their first days of development are highly sensitive to their micro-environment, and it is unknown how their transcriptome adapts to different embryo culture compositions.

Comparison of oocyte vitrification using a semi-automated or a manual closed system in human siblings: survival and transcriptomic analyses.

Background: Indications of oocyte vitrification increased substantially over the last decades for clinical and ethical reasons. A semi-automated vitrification system was recently developed making each act of vitrification reproducible. In this study, we evaluated the efficiency of the semi-automated technique of oocyte vitrification by survival rate, morphometric assessment and resistance to empty micro-injection gesture as compared with a manual method.

Effect of paternal smoking on pre-implantation embryonic development: a prospective cohort study.

Context: Recent studies have failed to demonstrate the negative impact of male tobacco smoking on embryo development, raising the question of its actual implication on natural fecundity and assisted reproductive techniques outcomes.

Aims: To assess the impact of paternal smoking on embryo development.

Methods: In this prospective cohort study, 252 men from couples undergoing in vitro fertilisation (IVF) were included.