Objective(s): Sperm cryopreservation plays an undeniable role in assisted reproductive technology. However, this process significantly reduces the motility, viability, morphology and nuclear integrity of sperm. Reasons of these changes were oxidative stress and apoptosis. The aim of this study was to evaluate the influence of vitamin D on the survival and integrity of ...

background: saccharin is an artificial non-caloric sweetener that used to sweeten products such as drinks, candies, medicines, and toothpaste, but our bodies cannot metabolize it. sodium saccharin is considered as an important factor in tumor promotion in male rats but not in humans. objective: the objective of this study was to investigate the effect of saccharin consumption on sperm parameter...

Reactive oxygen species (ROS) generation, induced by the cryopreservation process, can be responsible for mammalian sperm damage. Curcumin is known as an effective antioxidant against oxidative stress. The aim of this study was to evaluate the effects of curcumin on sperm count, motility and viability, semen total antioxidant capacity and DNA integrity of rat spermatozoa during semen freeze-tha...

Background: Male infertility is a widespread problem and increased number of mast cells-induced by some drugs like sulpiride atipycal antipsychotic drug, ara described in the testis of males, exhibiting impaired sper-matogenesis and fertility disorders. In this study number of mast cells and sertoli cells, thickness of seminiferous tubule’s lamina propria and sperm concentration and viability i...

background: spermatozoa cryopreservation is used for the management of infertility and some other medical conditions. the routinely applied cryopreservation technique depends on permeating cryoprotectants, whose toxic effects have raised the attention towards permeating cryoprotectants-free vitrification technique. objective: to compare between the application of slow cryopreservation and vitri...

background: control of the medium osmolarity and temperature during long or short time sperm manipulation is essential. objective: the objectives of the present study were to find the effects of different osmolarities of modified tyrode's solution and milk on the bull sperm during incubation at above zero temperatures. materials and methods: semen samples were collected twice from five najdi bu...

The purpose of this study was to evaluate the probable effects of the vitamin E addition in different levels to the extender of chicken semen on spermatozoa quality during storage of semen at 4°C for 0, 3, 6, 10 and 24 hours. Eight young Ross broiler breeder strain 308 roosters were used in this experiment. The collected semen from all roosters was mixed together and diluted with modified a Rin...

The aim of this study was to determine the effect of ewe breed on the reaction time and semencharacteristics in the ram. For this purpose, from the native sheep breeds in Iran, seven Lory rams and fourewes (two Lory and two Ghezel breeds) were selected. Seven rams were individually subjected to 4 weeklytrials in which one of the following two treatments was applied alternately. All of rams were...

Background: cyclophosphamide is anticancer agent that has been toxic effects on male reproductive system.The antioxidant agents in imedeen such as lycophence GS and Biomarine complex play important role in preventing the direct and indirect effects of free radicals caused by CP; therefore, the purpose of this study was to evaluate the effects of Imedeen on sperm characteristics of mature male m...