Research Paper Volume 11, Issue 9 pp 2749—2761
Male age: negative impact on sperm DNA fragmentation
- 1 Division of Gynecology and Reproductive Medicine, Department of Gynecology, Humanitas Fertility Center, Humanitas Research Hospital, 20089 Rozzano (Milan), Italy
- 2 Humanitas Clinical and Research Center, 20089 Rozzano (Milan), Italy
- 3 Department of Medical Biotechnology and Translational Medicine, University of Milan, 20090 Segrate (Milan), Italy
received: February 26, 2019 ; accepted: April 29, 2019 ; published: May 14, 2019 ;https://doi.org/10.18632/aging.101946
How to Cite
Copyright: Albani et al. This is an open‐access article distributed under the terms of the Creative Commons Attribution License (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The main goal of semen processing in Assisted Reproductive Techniques (ART) is to select sperm with good viability and, at the same time, remove Reactive Oxygen Species (ROS) sources (such as leukocytes) and reduce the percentage of morphologically abnormal sperm for fertility treatment. We performed a comparative analysis on sperm DNA fragmentation after Density Gradient Centrifugation (DGC) using products sold by two competing companies. Our results showed comparable DNA Fragmentation Index (DFI) after treatment with both DGC products. However, in both cases, a comparable number of samples do not benefit from the treatment. Interestingly, increasing evidences indicated that male age has a negative impact on sperm DNA fragmentation, but the mechanisms underlying age-dependent patterns of sperm decline have not yet been fully understood. Thus, we performed a comparative analysis of DFI before and after treatment with DGC products in age-stratified sample populations. Our results showed a worsening of the baseline DFI in the eldest group and the benefits of DGC on sperm DNA were compromised. In conclusion, our work consolidates the current evidences suggesting that both paternal and maternal aging, critically affects reproductive success.