Background: Fertilization and fecundation obviously are the phenomenon in which several factors are involved. Sperm membranous proteins are a series of these important elements. CD9, an inner acrosomal membrane protein, is one of the tetraspanin members that involved in sperm-egg fusion. CD52, is a GPI anchor protein which is expressed in the epididymal cells and during passage of sperms throug...

Background: In mammalian spermatozoa, motility is one of the most important parameters for evaluating the quality of the semen. From a functional point of view, motility is strongly related to the spermatozoa’s ability to manage its energy status, Thus, modulation of energy status could be translated into significant changes in motility patterns. The aim of the present study was to evaluate xyl...

GOGOL P. 2013. Motility parameters and intracellular ATP content of rabbit spermatozoa stored for 3 days at 15°C. Folia Biologica (Kraków) 61: 87-91. The effect of semen storage duration on motility parameters and ATP content of rabbit spermatozoa were investigated. Ejaculates were collected from 9 New Zealand White male rabbits and diluted with a commercial rabbit semen extender Galap. Semen w...

Background: There is a general deterioration in sperm quality depending on time postmortem. Refrigeration of the epididymes down to around 5°C is the best strategy to lower this damage and there are many dissim ilarities between species, possibly due to differences on cold shock endurance of epididymal sperm. Our objective was to determine the effect of 5°C and 37°C on goat epididymal sperms mo...

abstract background: sperm parameters and motion kinetics are affected by cryopreservation. objective: the main purpose of the current study was to determine the effect of different concentrations of trolox as an antioxidant to freezing-thawing procedure on human sperm kinematic parameter. materials and methods: semen was collected from 20 normal donors and divided into five aliquots prior to c...

The effects of acute restraint stress on sperm motility and reproductive endocrinology were investigated in adult rats. Sperm motility was determined by computer-assisted sperm analysis. Acute restraint stress reduced sperm motility starting after 30 min, and the sperm motility parameters, percentage of motile spermatozoa (%), straight-line velocity, curvilinear velocity, deviation of the sperm...

Oxidative stress during freezing-thawing reduces sperm motility, viability, membrane functions and antioxidant capacity. Thymus vulgaris has antioxidant properties due to phenolic compounds. The purpose of current study was to evaluate the effect of Thymus vulgaris extract as a natural antioxidant on post-thawed Moghani ram sperm quality. Semen samples were collected twice a week from four rams...

Cooling method was proposed to maintain the sperm quality for several days. Nevertheless, during this procedure, sperm is encountered to “cold shock”, and its quality decreases time-dependently. This study was designed to improve the in vitro sperm preservation methods. Thirty normal semen samples were examined in Shiraz, Iran, 2017. Fifteen samples were incubated at 22-27 °C and 15 samples wer...

Sixty semen ejaculates from 10 mature bulls, 5 each of Jafarabadi and Mehsana breed, were studied for sperm motility and velocity parameters of fresh and frozen-thawed spermatozoa using computer assisted sperm analyzer (CASA). The mean values of motile and progressively motile spermatozoa observed in fresh semen of Jafarabadi and Mehsana bulls (79.77±1.62 and 61.80±1.85, and 78.90±1.22 and 61.3...

BACKGROUND Diabetes mellitus characterized by hyperglycaemia could affect sperm quality as a result of increased oxidative stress. This study was performed to investigate the effects of red palm oil (RPO), aqueous rooibos tea extracts (RTE) as well as their combination (RPO + RTE) on sperm motility parameters in streptozotocin-induced diabetic rats. MATERIALS AND METHODS Diabetes was induced ...