Increased Mitochondrial Common Deletion in Oligo-Astheno-Teratozoospermia Samples Is Not Correlated with Increased Global DNA Methylation: Unexpected Results for ATP Levels.

While we could not definitively determine the exact mechanism underlying the elevated ATP levels, we propose potential explanations, such as an increased mitochondrial copy number or the accumulation of unconsumed ATP due to motility defects. A possible reason for the lack of significant methylation differences may be the limitation of examining global methylation without assessing gene-specific methylation profiles in spermatozoa. Further research is needed to explore these findings and their implications for male infertility.