the effect of osmolarity and glycerol different levels in soybean lecithin-based extender on the bull sperm quality after cryopreservation was examined using six holstein bulls in a 2 × 3 factorial trial based on completely randomized design, with three levels of osmolarity (250, 300 and 350 mosml) and two levels of glycerol (5 and 7 %) .in general, semen samples were collected 36 times (from e...

the aim of the present study was to find the morphological parameters of testis-epididymis and their relationship with epididymal sperm parameters of pubertal iranian domestic buck. total pairs of 40 testesepididymes were provided from local slaughterhouse and transported to the laboratory. thirty pairs were evaluated for anatomical features and remained 10 pairs were evaluated for both anatomi...

Background: Vitamin E is believed to be the primary component of the antioxidant system in spermatozoa. There is a relationship between activity of these antioxidant and function of sperm. Vitamins E and C which are belong to non-enzymatic antioxidant are used as a supplemented drug to improve sperm quality and male fertility. The present study was carried out to investigate the positive effect...

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...

introduction: sperm viability test is important in diagnosis and treatment of male infertility. the common test is e&n; and host which they are based on membrane permeability and integrity. the aim of this study was to evaluate mtt assay as a sperm viability test based on mitochondrial activity. materials and methods: washed sperm samples were co-incubated with mtt in different media and differ...

Background: Infertility is a problem that now affects many couples that are causing the disintegration of many families and as a psychological crisis, a lot of stress on couples has been entered. Cyclosporine (CsA), a cyclic undecapeptideof fungal origin, is a powerful immunosuppressive agent that has markedly improved graft survival rates in organ transplantation. The drug has adverse side eff...

background: para-nonylphenol (p-np) is able to induce malformations in male reproductive system. objective: the aim of this study was to investigate the preventing role of vitamin e (vit.e) on sperm parameters and reproductive hormones in developing rats. materials and methods: pregnant rats were divided into 4 groups: control p-np vit.e and p-np+vit.e. treatments were performed on day 7 of ges...

The objectives of this study were to investigate the effects of testis-epididymis cool storage on viability and progressive motility of buffalo epididymal sperm (EP) and to compare the influences of two basic semen extenders on post thaw EP viability and progressive motility. Abattoir collected buffalo testicles were allotted to three storage times (0 h: n = 10; 24 h: n = 10 and 48 h: n = 12). ...

Background: Acrylamid (AA) is found in carbohydraterich foods that are prepared at high temperatures, such as French fries and potato chips. The toxic effects of AA in male animals include degeneration of epithelial cells of seminiferous tubules, decreased number of sperm and elevation in abnormal spermatozoa. The aim of this study was to evaluate the detrimental effects of AA on sperm paramete...