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...

Fish sperm cryopreservation is considered as a valuable technique for artificial reproduction and genetic improvement (Chao & Liao, 2001; Kopeika et al., 2007; Rana, 1995; Suquet et al., 2000). Semen quality must be monitored when attempts are made to increase the efficiency of artificial fertilization, to cryopreserve only sperm of high quality, and to evaluate frozenthawed sperm. Cryopreserve...

BACKGROUND Sperm cryopreservation remains the only clinically feasible option to preserve male fertility. The quality of counselling provided by the treating physicians and the cost of sperm cryopreservation can both influence a patient's decision about whether to preserve sperm. On 5 August 2010, the Quebec government introduced provincial coverage of assisted reproductive technologies, with s...

It is universally recognized that cryopreservation impairs sperm quality. In order to improve postthawing sperm survival and motility, media of different composition and different protocols have been proposed. However, no clear evidence is available to understand which are the most efficient protocol and medium for sperm cryopreservation. The present study evaluates the efficiency of two differ...

Effect of supplementation of ascorbic acid, caffeine and chloroquine diphosphate in the dilutor on post-thaw quality of spermatozoa was studied. Thirty-two semen ejaculates (8 each from 2 Holstein Friesian and 2 crossbred; 50% Friesian x 50% Haryana) were studied. Ascorbic acid, caffeine and chloroquine diphosphate were added in Tris-egg yolk-glycerol (control) extender at the concentration of ...

objective: this study aims to evaluate the protective effects of american ginseng administered by gastric intubation on sperm vital quality in adult male rats treated with cyclophosphamide (cp). materials and methods: in this experimental study, 28 adult male wistar rats were assigned to four groups, seven rats in each. the animals allocated to control, cp treated, ginseng treated and cp-ginsen...

BACKGROUND Global ubiquitination in human semen has been found to negatively correlate with standard semen parameters, indicating that ubiquitination can be considered a marker of poor semen quality. However, the inclusion of all semen components in the analysis may be misleading on the biological significance of ubiquitination of sperm cells. We have recently demonstrated the variable presence...

OBJECTIVE To investigate the effect of cell phone use on various markers of semen quality. DESIGN Observational study. SETTING Infertility clinic. PATIENT(S) Three hundred sixty-one men undergoing infertility evaluation were divided into four groups according to their active cell phone use: group A: no use; group B: <2 h/day; group C: 2-4 h/day; and group D: >4 h/day. INTERVENTION(S) No...

Factors that affect sperm quality can include method of semen collection, conditions for capacitation and whether or not agglutination is present. Media and procedures for sperm washing can also impair or improve sperm function in assisted reproductive technologies. For example, the removal of seminal fluid through large volume washing is required to eliminate decapacitation activity of seminal...

BACKGROUND This study was conducted to evaluate the potential protective effects of omega-3 poly unsaturated fatty acids (Ω-3 PUFAs) on bovine sperm quality in response to cooling and cryopreservation. MATERIALS AND METHODS : In this experimental study included ejaculates from five proven fertile bulls, allocated to the control and the four experimental groups. For group 1, polyethylene glyco...