In recent years, investigators have noted a trend toward a declining proportion of male births in many industrialized nations. While men bear the sex-determining chromosome, the role of the female partner as it pertains to fertilization or miscarriage may also alter the gender ratio. We attempted to determine a man's secondary sex ratio (F1 generation) by directly examining the sex chromosomes ...

In Drosophila, mature sperm are transferred from males to females during copulation, stored in the sperm storage organs of females, and then utilized for fertilization. Here, we report a gene named sheepish (shps) of Drosophila melanogaster that is essential for sperm storage in females. shps mutant males, although producing morphologically normal and motile sperm that are effectively transferr...

Oxidative stress is one of the important causes of the type 1 diabetes induced changes in the sperm quality. Bioflavonoids, Rutin 10 mg/Kg and Naringin 10 mg/Kg were evaluated for their protective effects on sperm parameters, oxidative stress, and histopathology of type 1 diabetic rats. Results demonstrated the reduction in sperm count, sperm motility and vitality in diabetic rats. Mass drug ad...

objective: although key roles for dietary vitamin e (vite) and fatty acid (fa) in fertility have been confirmed, limited data are available on the effects of vite alone, or a constant level of vite supplemented by dietary omega-6 and omega-3 fas in combination on male reproduction. consequently in this paper, the effects of vite, sunflower oil, fish oil and their combination on rat sperm were i...

background: in previous investigations, it has been clarified that electromagnetic fields (elf) can cause some changes in cellular behavior. the aim of this prospective study was to investigate the effect of magnetic field (mf) on human sperm parameters of motility, morphology, and viability. materials and methods: semen samples were collected from 12 fertile men, and were allowed to liquefy fo...

The purpose of this study was to evaluate the probable effects of leptin addition in different levels to the semen extender on sperm quality (motility and motility parameters, viability, sperm membrane integrity, and DNA damage). Semen specimens were evaluated immediately after leptin addition, equilibration time and after thawing the frozen semen. Five healthy buffalo bulls (5 ejaculates from ...

The aim of this study was to map chromosomal regions containing hypothetical genes responsible for the following parameters of mouse semen quality: (1) the percentage of sperm with abnormal head morphology, (2) the level of dead spermatozoa, (3) the percentage of sperm tails with residual cytoplasmic droplets, and (4) the percentage of sperm with impaired sperm tail membrane integrity. We also ...

Dunaliella salina, lycopene and vitamin A Carotenoids especially betacarotene, vitamin A and lycopene have been shown to boost sperm parameters [2-5] Dunaliella salina is a microalgae which is a naturally rich source of mixed carotenoids including lycopene [6] Betacarotene, lycopene and vitamin A can reduce sperm DNA fragmentation and lipid peroxidation [1, 2] Vitamin A is an essential nutrient...

Testicular function is particularly susceptible to vascular insult, resulting in a negative impact on sperm production and quality of the ejaculate. A prompt diagnosis of testicular dysfunction enables implementation of appropriate treatment, hence improving fertility forecasts for stallions. The present research aims to: (1) assess if Doppler ultrasonography is a good tool to diagnose stallion...