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Impact of the IVF laboratory environment on human preimplantation embryo phenotype

Part of: DOHAD & IVF

Published online by Cambridge University Press:  14 June 2017

D. K. Gardner  and
R. L. Kelley
D. K. Gardner*
Affiliation:
School of BioSciences, University of Melbourne, Parkville, VIC, Australia
R. L. Kelley
Affiliation:
School of BioSciences, University of Melbourne, Parkville, VIC, Australia
*
*Address for correspondence: D. K. Gardner, School of BioSciences, University of Melbourne, Parkville, VIC 3010, Australia. (Email david.gardner@unimelb.edu.au)
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Abstract

The phenotype of the human embryo conceived through in vitro fertilization (IVF), that is its morphology, developmental kinetics, physiology and metabolism, can be affected by numerous components of the laboratory and embryo culture system (which comprise the laboratory environment). The culture media formulation is important in determining embryo phenotype, but this exists within a culture system that includes oxygen, temperature, pH and whether an embryo is cultured individually or in a group, all of which can influence embryo development. Significantly, exposure of an embryo to one suboptimal component of the culture system of laboratory typically predisposes the embryo to become more vulnerable to a second stressor, as has been well documented for atmospheric oxygen and individual culture, as well as for oxygen and ammonium. Furthermore, the inherent viability of the human embryo is derived from the quality of the gametes from which it is created. Patient age, aetiology, genetics, lifestyle (as well as ovarian stimulation in women) are all known to affect the developmental potential of gametes and hence the embryo. Thus, as well as considering the impact of the IVF laboratory environment, one needs to be aware of the status of the infertile couple, as this impacts how their gametes and embryos will respond to an in vitro environment. Although far from straight forward, analysing the interactions that exist between the human embryo and its environment will facilitate the creation of more effective and safer treatments for the infertile couple.

Keywords

amino acidsammoniumembryo cultureoxygenstress

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Type
Original Article
Information
Journal of Developmental Origins of Health and Disease , Volume 8 , Issue 4: Themed Issue: Assisted Reproductive Treatments (ART) and DOHAD , August 2017 , pp. 418 - 435
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© Cambridge University Press and the International Society for Developmental Origins of Health and Disease 2017 

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