the use of low level laser to reduce pain, inflammation and edema, to promote wound, deeper tissues and nerves healing, and to prevent tissue damage has been known for almost forty years since the invention of lasers. this review will cover some of the proposed cellular mechanisms responsible for the effect of visible light on mammalian cells, including cytochrome c oxidase (with absorption pea...

in assisted reproduction techniques (art) settings, reactive oxygen species (ros) can be produced from endogenous and exogenous sources during in vitro manipulation. endogenous sources of ros include gametes and embryo, whereas exogenous sources are oxygen tension, light exposure, culture media, and the nature of some protocols, such as centrifugation or cryopreservation. elevated ros productio...

Phanerochaete chrysosporium maintained on glucose as the carbon source contained severely impaired mitochondria that were characterised by the loss of both succinate dehydrogenase and cytochrome oxidase activities. These cells maintained a constant value for energy charge using anaerobic metabolism. Cells with these properties express lignin peroxidase when supplied with a pure oxygen atmospher...

Natural products isolated from plant sources are well known for their pharmacological potential in diversity of disease treatments such as inflammatory or cancer conditions. Mango (Mangifera indica L.) and Juglans regia are thought to be rich of functional phytochemicals. To elucidate the anticancer activity of Juglans regia (JR) and Mangifera indica L (MI) aqueous extract were investigated on ...

Natural products isolated from plant sources are well known for their pharmacological potential in diversity of disease treatments such as inflammatory or cancer conditions. Mango (Mangifera indica L.) and Juglans regia are thought to be rich of functional phytochemicals. To elucidate the anticancer activity of Juglans regia (JR) and Mangifera indica L (MI) aqueous extract were investigated on ...

metals can cause oxidative stress by increasing the formation of reactive oxygen species (ros), which make antioxidants incapable of defiance against growing amounts of free radicals. metal toxicity is related to their oxidative state and reactivity with other compounds. however, several reports about metals have been published in the recent years. mitochondria, as a site of cellular oxygen con...

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...

objective: oxidative stress plays a key role in the pathophysiology of brain ischemia and neurodegenerative disorders.previous studies indicated that viola tricolor and viola odorataare rich sources of antioxidants. this study aimed to determine whether these plants protect neurons against serum/glucose deprivation (sgd)-induced cell death in an in vitro model of ischemia and neurodegeneration....