Abstract
ObjectiveTo establish the relationship between the degree of sperm DNA fragmentation and seminal parameters, male age and outcome of in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI). Subjects and methodsThe sample consisted of 43 couples undergoing IVF/ICSI. The mean age of men was 35.62±4.87 years and that of women was 33.88±3.95 years. We prospectively analyzed sperm DNA fragmentation from each patient by the Sperm Chromatin Structure Assay (SCSA) and correlated the findings with seminal parameters (volume, concentration, progressive motility and morphology), IVF/ICSI outcomes and male age. IVF/ICSI outcome was evaluated by measuring the fertilization rate, embryo quality and the pregnancy and miscarriage rates. ResultsDNA fragmentation was negatively correlated with progressive motility (p=0.000) of fresh and capacitated (p=0.041) semen. Older patients had a significantly lower percentage of progressive motility in fresh seminal samples (p=0.034) and worse sperm DNA quality (p=0.043). There were no significant differences between the fragmentation rate and fertilization rate, embryo quality, and the pregnancy and miscarriage rates. ConclusionsDNA fragmentation is inversely correlated with progressive motility in fresh seminal samples. DNA fragmentation does not predict the IVF/ICSI outcome but screening for sperm DNA damage may provide useful information in the diagnosis of idiopathic male infertility. Seminal quality is affected by increasing male age.
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