Abstract Fertilization is an exceptionally specific cell recognition event that represents the culmination of a complex sequence of morphological and functional maturational events. In the case of the male gamete,…
Abstract The incidence of infertility is up to 20–25 percent in men with poor semen quality with a contribution of the male factor in 30–50 percent of couples undergoing assisted…
Abstract Today, about 10–15 percent of couples at reproductive age worldwide are infertile and they are unable to conceive naturally without medical assistance. Infertility can be caused by male-only factors,…
Abstract The acrosome reaction (AR) is an essential process of spermatozoa for fertilization and is characterized by the exocytosis of the acrosomal content and the release of hybrid membrane vesicles…
Abstract Mitochondria are crucial organelles of eukaryotic aerobic cells (somatic and germ cells) because they produce adenosine triphosphate (ATP) and are modulators of ion homeostasis, generators of free radicals and…
Abstract Assessment of sperm vitality is an important component of semen analysis. It helps to distinguish spermatozoa that are alive and immotile from those that are dead. Sperm vitality can…
Abstract The hypo-osmotic swelling (HOS) test, introduced in 1987 to assess the functional integrity of the human sperm membrane, appears to have withstood the test of time. Many articles have…
Abstract The evaluation of sperm morphology as a standard procedure to be included in routine semen analysis is under persistent pressure due to several factors relating inter alia to the…
Abstract The definition of infertility is often described as the inability of a couple to conceive after one year of regular, unprotected sexual intercourse. Male factor infertility is present in…
Abstract Computer-assisted semen analysis (CASA) is an automated and objective method to evaluate several sperm parameters, either in conjunction with or instead of routine manual semen analysis. CASA systems have…
