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Sperm DNA fragmentation: paternal effect on early post-implantation embryo development in ART.
A Borini1, N Tarozzi, D Bizzaro
1Tecnobios Procreazione, Centre for Reproductive Health, Via Dante 15, Bologna, Italy. borini@tecnobiosprocreazione.it
Human Reproduction (Oxford, England)
|June 24, 2006
Summary
High sperm DNA fragmentation negatively impacts embryo development after Intracytoplasmic Sperm Injection (ICSI), increasing the risk of pregnancy loss. This finding is crucial for assisted reproductive techniques (ARTs) outcomes.
Area of Science:
- Reproductive Biology
- Genetics
Background:
- The link between sperm DNA fragmentation and early embryo development in assisted reproductive techniques (ARTs) remains unclear.
- Understanding this relationship is vital for improving ART success rates.
Purpose of the Study:
- To investigate the correlation between sperm DNA fragmentation and ART outcomes, including clinical pregnancy and pregnancy loss.
- To assess the impact of sperm DNA fragmentation on post-implantation embryo development in patients undergoing In Vitro Fertilization (IVF) and Intracytoplasmic Sperm Injection (ICSI).
Main Methods:
- Sperm DNA fragmentation was quantified using the TUNEL assay.
- The study involved 132 men undergoing IVF or ICSI cycles.
- Results were correlated with standard sperm parameters and ART outcomes.
Main Results:
- A significant negative correlation was observed between sperm DNA fragmentation and sperm parameters (concentration, motility, morphology).
- In ICSI patients, high sperm DNA fragmentation was significantly associated with differences in clinical pregnancy rates (P=0.007) and pregnancy loss (P=0.009).
Conclusions:
- Sperm DNA fragmentation appears to influence post-implantation embryo development, particularly in ICSI procedures.
- Elevated sperm DNA fragmentation may compromise embryo viability, leading to an increased risk of pregnancy loss.