The objective of the present study was to explore the potential relationships of ovine sperm chromatin integrity, quantified using the sperm chromatin structure assay (SCSA), to the heat load of the scrotum and the discomfort felt by the animals because of fluctuations of microclimatic factors at different time periods before ejaculation. Ejaculates were collected once per week from five Chios ...

INTRODUCTION A population of lumbar spinothalamic cells (LSt cells) has been demonstrated to play a pivotal role in ejaculatory behavior and comprise a critical component of the spinal ejaculation generator. LSt cells are hypothesized to regulate ejaculation via their projections to autonomic and motor neurons in the lumbosacral spinal cord. AIM The current study tested the hypothesis that ej...

Premature ejaculation is the most-prevalent sexual problem in men. Various treatments have been developed to increase control over the moment of ejaculation, with two of the most frequent techniques used in behavior therapy being the squeeze method developed by Masters and Johnson (1970) and the "stop-and-start" technique described by Semans (1956). These treatments are effective and improve ma...

Male copulatory patterns, female multiple copulation and male post-copulatory guarding were studied in Eld’s deer Cervus eldi in Datian National Nature Reserve, China. Mating behavior in 18 females and 11 males from a group of 61 semi-captive Eld’s deer were observed. The majority (55.8%) of copulations occurred between 15:00–19:00 h. The ejaculatory mount was preceded by an average of 5.1 prio...

The effect of management of the female stimulus during semen collection and its association with libido re-establishment and the semen characteristics of sexually mature goats was evaluated. Eight 2-yr-old bucks were individually subjected to 12 weekly trials in which one of the following three treatments was applied alternately. In treatment one, each male performed two ejaculations on an estr...

Premature ejaculation (PE) is a common sexual dysfunction in men that is characterized by a short time to ejaculation, and a lack of control over ejaculation, and is associated with distress for men and their partners. Lack of knowledge about the aetiology of PE and lack of approved treatments might contribute to its under-diagnosis and under-treatment. The organic factors involved in PE are no...

BACKGROUND Several recent studies have investigated the therapeutic role of phosphodiesterase type 5 (PDE5) inhibitors in premature ejaculation (PE) used in the treatment of erectile dysfunction. OBJECTIVES In the present research, the efficacy of paroxetine alone and paroxetine plus tadalafil was compared in patients referred because of premature ejaculation. PATIENTS AND METHODS This quas...

Objective: Serum prostate-specific antigen (PSA) levels are very important in the diagnosis of prostate cancer. Besides prostate cancer, PSA levels can also be increased by cystoscopy, prostate biopsy, prostatitis, and manipulation. There are also studies reporting that ejaculation affects serum PSA levels. In this study, we aimed to investigate the effects of ejaculation frequency on serum PSA...

The copulatory behaviour of male mammals is characterized by striking diversity in patterns of copulatory stimulation and ejaculation frequency. We conducted comparative analyses of rodents to investigate the potential influence of sperm competition in the evolution of copulatory behaviour. We found that increasing sperm competition is associated with faster rates of stimulation and earlier eja...