Spermatozoa are physiologically exposed to reactive oxygen species (ROS) that play a
pivotal role on several sperm functions through activation of different intracellular …

The concentration of biomolecules in living systems shows numerous systematic and
random variations. Systematic variations can be classified based on the frequency of …

This study compared the activities of four antioxidant enzymes (superoxide dismutase, SOD;
catalase, CAT; glutathione peroxidase, GPX; and glutathione reductase, GSR) in the …

The ability of the neurohormone melatonin to ameliorate cryopreservation-induced damage
to spermatozoa has been demonstrated in several domestic species. However, it is unclear …

Seasonal breeding in buffalo is influenced by exogenous (photoperiod, climate, nutrition,
management) and endogenous (hormones, genotype) factors. Buffalo are negatively …

It is widely accepted that oxidative stress (OS) coming from a wide variety of causes has
detrimental effects on male fertility. Antioxidants could have a significant role in the treatment …

The study of sperm subpopulations spans three decades. The origin, meaning, and practical
significance, however, are less clear. Current technology for assessing sperm morphology …

One of the many functions of melatonin in vertebrates is seasonal reproductive timing.
Longer nights in winter correspond to an extended duration of melatonin secretion. The …

Some melatonin functions in mammals are exerted through MT1 and MT2 receptors.
However, there are no reports of their presence in the reproductive tract of the ram, a …

The addition of antioxidants to the cryopreservation medium has been shown to exert a
positive effect on the quality of frozen-thawed sperm in different species. The objective of the …