common vetch ( vicia sativa l.) an annual forage, belonging to the fabaceae family is one of the highly cultivated forage legumes in iran. drought stress is a serious adverse factor that limits plant growth and productivity, inducing a range of physiological as well as biochemical responses in plants. it may also lead to generation of oxygen activated species which in turn result in cell destru...

aim: was to assess the effects of ramadan observance upon repeated sprints and associated inflammatory and oxidative stress responses. methods: ten young trained boxers were tested during a control period (c), at the end of the first week (r-1), and during the fourth week of ramadan observance (r-4). on each occasion, they performed three vertical jumps, 10 x 6 s repeated sprints on a cycle erg...

background: blood is permanently exposed to oxidation stress and therefore has a high antioxidants capacity. many different factors increasing the demand for the antioxidant capacity can be observed in the stored blood of donors. consequently, damage to erythrocytes by free radicals may occur. so it is useful to control the alternation of anti-oxidant enzymes in stored blood at different days o...

introduction throughout their life cycle, plants are subjected to various types of environmental stresses which include salinity, water deficit, temperature extremes, toxic metal ion concentration and uv radiation. these environmental factors limit the growth and productivity of plants to various degrees, depending upon severity of stress. heavy metal toxicity is one of the major current enviro...

Reactive oxygen species (ROS) and reactive nitrogen (RNS) play a fundamental role in regulating endothelial function vascular tone the physiological conditions of system. However, oxidative stress has detrimental effects on human health, numerous studies confirmed that high ROS/RNS production contributes to initiation progression cardiovascular diseases. The antioxidant defense an essential hom...

Reactive oxygen species (ROS) and reactive nitrogen species (RNS) are generated from aerobic metabolism, as a result of accidental electron leakage as well as regulated enzymatic processes. Because ROS/RNS can induce oxidative injury and act in redox signaling, enzymes metabolizing them will inherently promote either health or disease, depending on the physiological context. It is thus misleadi...

Joint destruction in rheumatoid arthritis (RA) is due to tissue injury in the area caused by inflammatory reactions, release of MMPs and free radicals produced by neutrophils and macrophages. The control of free radical production may have therapeutic roles thus the study was done to check the status of lipid peroxidation product malondialdehyde (MDA) and a few antioxidant enzymes in RA patient...