A process called alternative splicing, which uses the information encoded in the KIT gene to make slightly different proteins (isoforms) for use in different circumstances, may impact whether a mutation on KIT affects blood cells, sperm cells, or pigment cells.
Further, the presence of DNMT3L in wildtype sperm raise the possibility that DNMT3L is carried through to the zygote/embryo where it may impact on health.
Organophosphorous pesticides (OP) may affect sperm chromosome segregation and augment the risk for genetic syndromes (Recio et al. 2001).
The present data show that M. hominis may affect sperm concentration and sperm morphology of infertile men.
Smoking, alcohol consumption and use of drugs like marijuana or steroids can all adversely impact sperm quality.
Irradiation may damage sperm in male seminal vesicles, or it may impair a male's ability to transfer sperm.
The findings – from an experiment conducted on sperm in dishes in the lab – are the first to demonstrate how the chemicals, which are so widespread they are detectable in people's blood, can impact on sperm and potentially harm reproduction.
Excessive ROS generation may adversely affect sperm number, motility, quality, and function including damage to sperm DNA integrity [ 10- 12].
In this study, we investigated the impact of sperm competition on sperm numbers, sperm morphology, acrosome integrity, sperm viability, and sperm motility in 18 muroid rodent species that differ widely in levels of sperm competition.
