Research has demonstrated that porcine circovirus type 2 (PCV2) can be shed into boar semen, raising the possibility that artificial insemination may be an important route by which disease associated with PCV2 is transmitted. The objective of this experiment was to determine the effect of vaccination against PCV2 on ejaculate characteristics and PCV2-specific antibody titers in serum of PCV2-po...

OBJECTIVE Fertility in males with congenital adrenal hyperplasia (CAH) is reported from normal to severely impaired. Therefore, we investigated fertility/fecundity, social/sexual situation, and pituitary-gonadal function in CAH males. SUBJECTS AND METHODS The patient cohort comprised 30 males, aged 19-67 years, with 21-hydroxylase deficiency. Their fertility was compared with age-matched nati...

It has been reported that mental stress causes abnormality of spermiogram parameters. We investigated the effect of psychological stress on the L-arginine-nitric oxide (NO) pathway. Semen samples were collected from 29 healthy fourth semester medical students just before (stress) and 3 months after (non-stress) the final examinations. Psychological stress was measured by the State Anxiety Inven...

Background: Cryopreservation has adverse effect on human spermatozoa via exposure to physical and chemical stress that may lead to alter in reactive oxygen species (ROS) levels. During sperm preparation or cryopreservation, centrifugation as a physical stress may effect on sperm quality probably with stress oxidative production and membrane damage. Therefore the aim of this study was to evaluat...

Oxidative stress, resulting from excessive levels of ROS in semen, has a negative impact on functional parameters and sperm fertility. In this study we examined the influence of the oxidative stress induced by hydrogen peroxide (H2O2) in ovine sperm motility after thawing and catalase (CAT) ability to preserve sperm motility. Semen was incubated at 37°C with 100 μM H2O2, 1 U catalase + 100 μM H...

Background: One of the most conventional causes of male infertility is increasing age, which has significant effects on sperm physiology. In advanced ages, degenerative alterations in germinal epithelium, decreased number of Leydig cells, and their functions affect spermatogenesis through a decrease in testosterone level. So it is important to know whether advanced paternal age is associated wi...

BACKGROUND Diabetes mellitus (DM) is increasing in men of reproductive age. Despite this, the prevalence of diabetes in men attending fertility clinics is largely unknown. Furthermore, studies examining the effects of DM on sperm fertility potential have been limited to conventional semen analysis. METHODS Conventional semen analysis (semen volume, sperm count, motility and morphology) was pe...

Persistent breeding-induced endometritis (PBIE) is a leading cause of infertility in mares. The objective the study was to assess genital perfusion and endometrial gene expression inflammatory cytokines mares classified as susceptible (n = 5) or resistant PBIE. Ten were examined daily during estrus until 6 d after hCG-induced ovulation for two estrous cycles. Twenty-four hours application 1500 ...

Prostaglandin F2α (PGF2α), oxytocin and gonadotropin releasing hormone (GnRH) have been used in bulls, rams, boars, stallions or rodents to increase sperm numbers in the ejaculate. Improving sperm quantity in the canine ejaculate would benefit all assisted reproductive techniques used in this species. The purpose of the present study was to evaluate the effects of PGF2α, oxytocin and GnRH on ca...