background: it is proved that testis is sensitive to electromagnetic field (emf) and its damage results in infertility. exposure to emf induces reactive oxygen species production and affects on anti-oxidants defense mechanisms. metallothionein (mt) is a name for a group of low molecular weight (6-7 kda), sulfhydryl rich proteins. expression of mt1 and mt2 genes in testis tissue after emf exposu...

background: combination of glycation and oxidation is associated with diabetes mellitus. the aim of this study was to clarify the effect of glycated proteins in presence of transition metal ions on production of reactive oxygen species (ros) in rat hepatocyte suspension.  methods: glycated albumin was prepared by incubation of bovine serum albumin with 100 mm glucose in 0.3 m phosphate buffer a...

background: the progressive accumulation of misfolded and aggregated proteins in neurons is an accepted mechanism in aging. overproduction of reactive oxygen species (ros), referred to as oxidative stress, is currently believed to play a pivotal role in this process. lipofuscin as a histological index of aging results from cross-links between oxidized proteins and lipids. therefore, to attenuat...

background: reactive oxygen species (ros) are a group of free radicals that in excessive amounts have negative influence on sperm quality and function. objective: to study the effect of varicocele and its severity on the level of ros in infertile men with clinical varicocele. materials and methods: in this controlled prospective study, 42 men with clinically diagnosed left varicocele and 30 fer...

background: reactive oxygen species (ros) are a group of free radicals that in excessive amounts have negative influence on sperm quality and function. objective: we compared ros levels in seminal plasma of infertile men with this level in healthy donors. we also determined the ros level in semen of infertile men according to the etiology of infertility, and also the effect of smoking on its le...

background: induction of cellular response after exposure to electromagnetic fields is limited to coherent fields. an incoherent noise field is supposed to suppress the bioeffects of regular rf electromagnetic fields. the purpose of this study was to investigate the effect of gsm mobile phone-induced radiofrequency (rf) on the induction of oxidative stress in sp2/0 cell line. materials and meth...

extremely low frequency (elf) electromagnetic field (elf-emfs) are widely employed in electrical appliances and different equipment such as television sets, elf-emfs can  affect biological systems by increasing production  ros. the altered balance between ros generation and elimination plays a critical role in a variety of pathologic conditions. ros levels have been observed in several hematopo...

background , despite numerous studies over a decade, it still remains controversial about the biological effects of rf emf emitted by mobile phone telephony. objective , here we investigated the effect of 900 mhz gsm on the induction of oxidative stress and the level of intracellular reactive oxygen species (ros) in human mononuclear cells, monocytes and lymphocytes as defence system cells. met...

Reactive oxygen species (ROS)plays an important role in sperm motility. The physiological generation at low concentration induces beneficial effects on sperm functions and plays a significant role in sperm metabolism. Meanwhile, the excessive generation of reactive oxygen species can overwhelm protective mechanism and triggers changes in lipid and protein layers of sperm plasma membrane, which ...

reactive oxygen species (ros)plays an important role in sperm motility. the physiological generation at low concentration induces beneficial effects on sperm functions and plays a significant role in sperm metabolism. meanwhile, the excessive generation of reactive oxygen species can overwhelm protective mechanism and triggers changes in lipid and protein layers of sperm plasma membrane, which ...