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Ex Utero Culture of Mouse Embryos from Pregastrulation to Advanced Organogenesis
Published on: October 19, 2021
8.4K
Optimizing the culture environment and embryo manipulation to help maintain embryo developmental potential
Jason E Swain1, Doug Carrell2, Ana Cobo3
1CCRM IVF Laboratory Network, Englewood, Colorado.
Fertility and Sterility
|February 7, 2016
Summary
Comprehensive chromosome screening (CCS) effectiveness varies. Embryo culture conditions and biopsy procedures significantly impact IVF success beyond just euploidy, highlighting areas for laboratory improvement.
Area of Science:
- Reproductive medicine
- Embryology
- Genetics
Background:
- The clinical success of assisted reproductive technology (ART) cycles using comprehensive chromosome screening (CCS) can vary significantly between practices.
- A debate persists regarding the overall efficacy and utility of blastocyst biopsy and CCS in improving in vitro fertilization (IVF) outcomes.
- Numerous factors beyond embryo euploidy influence ART cycle success, indicating a complex interplay of variables.
Purpose of the Study:
- To explore reasons for inconsistent clinical success rates observed after the implementation of CCS in IVF practices.
- To highlight the impact of pre-implantation genetic testing (PGT) procedures and laboratory conditions on embryo development and reproductive potential.
Main Methods:
- Review of existing literature and clinical data on CCS implementation and IVF outcomes.
- Analysis of variables affecting embryo development, including culture environment, biopsy, and vitrification procedures.
- Identification of potential areas for improvement within the IVF laboratory setting.
Main Results:
- Embryo culture conditions (media, conditions, platform) can introduce environmental stressors affecting biochemical, metabolic, and epigenetic patterns.
- Improperly performed biopsy and vitrification procedures can negatively impact overall embryo quality and developmental potential.
- Euploid embryo transfer is a critical factor, but not the sole determinant of successful ART outcomes.
Conclusions:
- Variability in CCS success rates may stem from factors beyond chromosome number, including laboratory environment and procedural techniques.
- Optimizing embryo culture conditions and refining biopsy/vitrification protocols are crucial for enhancing IVF laboratory performance.
- Further improvements in IVF laboratory practices are needed to maximize the benefits of CCS and achieve consistent high success rates.
