Background: A number of studies have demonstrated membrane lipid peroxidation (LPO) as one of the causes of defective sperm function in liquid semen preserved at 4◦C and cryopreserved semen. Some attempt has been made to preserve sperm parameters, particularly sperm motility, by adding some elements and Materials to the semen before freezing. Materials and Methods: To investigate effects of cop...

background: previous researches about the effect of smoking on semen quality are contradictory, and the mechanism behind the harmful effect of smoking on semen quality still remains unclear until today. objective: the objectives of this study are evaluation of the relationship between smoking and fertility, investigation of the effects of cigarette smoking on sperm parameters and detection of p...

In order to provide an insight to the prevalence of low sperm count and abnormal semen parameters in suspected subfertile/infertile men in our environment, semen samples collected from one hundred and seventy (170) men aged 21-50 years, whose wives were seen at a private fertility clinic in Abakaliki, Nigeria with diagnosis of primary and secondary infertility (78 and 92 respectively) were anal...

Currently, the assessment of sperm function in a raw or processed semen sample is not able to reliably predict sperm ability to withstand freezing and thawing procedures and in vivo fertility and/or assisted reproductive biotechnologies (ART) outcome. The aim of the present study was to investigate which parameters among a battery of analyses could predict subsequent spermatozoa in vitro fertil...

OBJECTIVES Possible relationship between semen quality (semen volume, sperm concentration and sperm motility) and parabens exposure was investigated in male partners of couples who visited a gynecology clinic in Tokyo for infertility consultation (n = 42, 36.8 ± 5.4 years). METHODS Semen parameters were measured according to WHO guideline at the clinic, and urinary methyl- (MP), ethyl- (EP), ...

The aim of this study was to address the question of whether differences in farrowing rate and litter size after the use of different ejaculates could be predicted using the standard semen parameters under commercial conditions. In this study, a total of 1818 sows were used to evaluate the fertility predictive value of different sperm parameters. Logistic regression analysis (univariate and mul...

OBJECTIVES To evaluate the incidence of functional and chromatin alterations on spermatozoids in patients grouped according to normality of standard semen parameters based on the 5th edition of the World Health Organization (WHO) guidelines. To identify and correlate the most frequently altered characteristics in the normal standard semen parameters sub-population. MATERIALS AND METHODS A pro...

This study was conducted to determine chromatin integrity and DNA damage by DNA electrophoresis and comet assays of buffalo fresh and frozen semen. Semen samples were collected from four buffalo bulls and evaluated after freezing for semen motility, viability, sperm abnormalities, chromatin integrity and DNA damage. A significant variation was found in semen parameters after thawing. Highly sig...

background: while traditional semen parameters are of significant clinical value, total fertilization failure in ivf cycles is not uncommon. sperm function testing such as; hamster egg penetration test has severed limitations as a clinical test. the aim of this study was to evaluate the predictive value of semen parameters by using of intracellular calcium [ca2+]i increase in response to proges...

Background: Artificial insemination is a valuable tool in genetic improvement programs and widely used breeding technique in farm animals. Semen processing and cryopreservation causes considerable damage to sperm DNA, motility apparatus, plasma membrane, acrosomal cap and thus, reduced fertility. Selenium is an integral part of glutathione peroxidase (GSH-Px), an enzyme which protects cell inte...