highly significantp <0.001
Lipid peroxidation products in the spermatozoa The level of 4-HNE, an electrophilic aldehyde and a natural by product of LPO compared with the level in the fertile normozoospermic group manifested a highly significant increase in both the OAT ( p <0.001) and AST ( p =0.003) groups ( Figure 2 ).