Sperm DNA integrity is crucial for successful fertilization and embryo development. DNA fragmentation occurs when genetic material within spermatozoa sustains structural damage, often due to oxidative stress or defective chromatin packaging.
High levels of DNA fragmentation are associated with reduced fertility, recurrent pregnancy loss, and poor assisted reproductive outcomes. Laboratory testing methods include the TUNEL assay and sperm chromatin structure assay (SCSA).
Contributing factors include smoking, advanced paternal age, infection, varicocele, and environmental toxins. Antioxidant therapy and surgical correction of varicocele may improve DNA integrity in selected cases.
Emerging research explores targeted therapies aimed at erotic enhancing genomic stability, reflecting the growing importance of molecular diagnostics in andrology.
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