background: embryo cryopreservation is the process that water is removed from the cell by cryoprotectant materials, and embryos are stored at temperature below zero. this process may affect the viability and developmental potential of embryos. objective: in this study, the effect of the vitrification cryotop method on the expression level of oct4 and mest developmental genes in mouse blastocyst...

in this study we investigated histopathological changes of mice ovarian tissues following long-term administration of copper sulfate and induction of chronic copper poisoning. the study comprised of three different groups of twenty one mice as follows: the first group (group 100) which treated by gavage with copper sulfate at a dose of 100 mg kg-1 for 5 weeks. the second group (group 200), whic...

objectives: the aim of the present study was to evaluate protective effect of royal jelly on sperm parameters, testosterone level, and malondialdehyde (mda) production in mice. materials and methods: thirty-two adult male nmri mice weighing 30±2 g were used. all the animals were divided into 4 groups. control group: received saline 0.1 ml/mouse/day orally for 30 days. royal jelly group (rj): re...

the pharmacological interaction between cannabinoidergic system and vanilloid type 1 (trpv1) channels has been investigated in various conditions such as pain and anxiety. in some brain structure including hippocampus, cb1 and trpv1 receptors coexist and their activation produces opposite effect on excitability of neurons. in this study, we tested the hypothesis that trpv1 channel is involved i...

background: the present study was carried out to investigate the possible protective effects of royal jelly (rj) on oxymetholone (oxm)-induced oxidative liver injuries in mice. methods: in total, 32 adult male nmri mice were divided into four groups of eight mice each. mice in groups 1 and 2 were orally administered 5 mg/kg/day oxm for 30 days. at the same time, mice in group 3 received rj at a...

conclusions according to the results, six strains were resistant to six or seven antibiotics and all strains were at least resistant to two antibiotics. however, for each of these resistant bacteria one bacteriophage was isolated from environmental samples, which showed the effectiveness of bacteriophages to remove clinically resistant e. coli strains. effective phages in vitro showed effective...

cinnamon has many therapeutic effects, such as its impact the increase of sexual ability. this experiment was conducted to determine the effect of cinnamon extract on spermatogenesis and hormonal axis of pituitary gonad in mice. the animals used in this study are male adult mice (weighing about 30-34 g and 9-10 weeks old). cinnamon was purchased from one of the most valid shops in jahrom and th...

background and objectives: acrylamide is a monomer which is formed in foodstuffs containing carbohydrates altered to asparagine during thermal processing. vitamin e is a component in human diet considered as the most effective lipid-soluble antioxidant found in the biological system. it prevents initiation of oxidative tissue damage. the aim of this study was to investigate the potential role o...

background: according benefcial effects of  tribulus terrestris  (tt) extract on  tissue damage, the present study investigated the infuence of hydroalcoholic extract of tt plant on cisplatin (cis) (ebewe pharma, unterach, austria) induced renal tissue damage in male mice. methods: thirty mice were divided into five groups (n = 6). the first group (control) was treated with normal saline (0.9% ...

background several studies showed that dopamine and norepinephrine improve retention and retrieval of memory. methylphenidate is an enhancer of dopamine and norepinephrine in brain. objectives in the present study, the effect of methylphenidate was evaluated on retention and retrieval of memory in young and aged mice using passive avoidance apparatus. materials and methods animals were divided ...