objective: oxidative stress as a consequence of aging can induce infertility in males. in this study, we have investigated the effects of aging on sperm parameters, intra-spermatic water soluble antioxidants, reactive oxygen species (ros), and in vitro blastocyst formation. methods: we chose 5 older nmri male mice (10-12 months) and 5 younger nmri male mice (2-3 months). sperm parameters, ros, ...

objective: in this study we investigated the effects of spearmint (mentha spicata labiatae) on the reproductive system, fertility and number of offspring in adult male rats. materials and methods: adult wistar male rats in one control (c) and three experimental groups (i, ii and iii) received 0, 10, 20 and 40 mg/kg spearmint extract orally for 45 days, respectively.  following this treatment, t...

As mobile phone usage is growing rapidly, there is a need for a comprehensive analysis of the literature to inform scientific debates about the adverse effects of mobile phone radiation on sperm quality traits. Therefore, we conducted a meta-analysis of the eligible published research studies on human males of reproductive age. Eleven studies were eligible for this analysis. Based on the meta-a...

antioxidant properties of ghrelin have been demonstrated in recent studies. in the present study, theeffects of chronic administration of ghrelin on the motility and plasma membrane integrity of rat spermatozoa during incubation at 37ºc were investigated. thirty 45-day-old male wistar rats were divided into control and treatment groups. rats in the treatment group were daily injected subcutaneo...

the aim of the current study was to evaluate the effects of the guanidinoacetic acid (gaa) supplement on the semen freezability of broiler breeder roosters. experiments were performed with twenty ross commercial strain broiler breeder roosters in four treatments and five repeats in a complete randomized design. roosters were fed a diet containing 0% (control), 0.06%, 0.12% and 0.18% gaa supplem...

high ambient temperature is the major constraint on buffalo productivity. the aim of this study was to evaluate the reproductive performance and thyroid gland function in winter and summer seasons in khuzestan buffalo bulls. six male indigenous buffaloes of khuzestan with nearly the same age (2-3 years old) and weight were used. semen and blood samples through jugular vein were collected, every...

this study aimed at determining the physico-morphological attributes, in vitrofertilityand their interrelationships in semen of sahiwal bulls. semen samples werecollected weekly for 6 weeks from ten mature sahiwal bulls divided randomly into 5 groups. the mean (±sem) of ejaculate volume (ml), mass activity (score 0-5), progressive sperm motility (%), sperm concentration (106/ml), live sperm (%)...

Chronic progressive external ophthalmoplegia (CPEO) is a mitochondrial cytopathy characterized by bilateral ptosis during adolescence, followed later by limitation of extraocular muscle movement and diplopia.1 The biochemical defect consists of mutations or deletions of mitochondrial DNA genes that encode respiratory chain enzymes involved in adenosine triphosphate (ATP) generation and its subs...