Semen Characteristics in Pubertal Boys. I. Semen Quality After First Ejaculation

Lack of Semen with Ejaculation

Lack of Semen with Ejaculation

Comparison of semen quality obtained by electroejaculation and spontaneous ejaculation in men suffering from ejaculation disorder.

BACKGROUND Electroejaculation has become an accepted form of semen procurement in men suffering from anejaculation. However, sperm in these ejaculates often exhibit low motility. The aetiology of asthenozoospermia remains uncertain. It may be related to primary low-grade motility of sperm from anejaculatory men or to detrimental effects of the electroejaculation process itself. The aim of this ...

Semen quality before and after gonadotoxic treatment.

BACKGROUND The aim of this study was to analyse the semen quality of patients before and after gonadotoxic therapy. PATIENTS AND METHODS We evaluated semen quality in 314 patients over a 26 year period. The diagnostic categories were leukaemia (n = 13); lymphoma (n = 128); testicular cancer (n = 102); benign conditions (n = 13); and other malignant neoplasms (n = 58). The degree of azoospermi...

Effect of various levels of catalase antioxidant in semen extenders on lipid peroxidation and semen quality after the freeze-thawing bull semen

The objective of this study was to evaluate effect of different concentrations of catalase in two extenders on motility, viability and lipid peroxidation bull spermatozoa during semen freezing process. Thirty ejaculates collected from ten Holstein bulls were pooled and evaluated at 37 °C. Pool ejaculated was split into two main experimental groups, 1 and 2. In experiment 1, specimen was dilute...