The demand for natural antioxidants has increased due to the harmful effects of synthetic antioxidants, such as toxicity and carcinogenic properties. Microalgae face this requirement they can produce numerous substances that have potential be antioxidants. This study aimed evaluate antioxidant activity Cosmarium extracts using ABTS radical cation assay identify compounds probably responsible it...

Pomegranate is a source of some very potent antioxidants (tannins, anthocyanins) which are considered to be also potent anti-atherogenic agents. The combination of the above unique various types of pomegranate polyphenols provides a much wider spectrum of action against several types of free radicals. Indeed, pomegranate is superior in comparison to other antioxidants in protecting low-density ...

Oxidant byproducts, such as superoxide anion (O2 ) and hydrogen peroxide, are produced as a consequence of normal aerobic metabolism. These molecules, which are highly reactive with other biological molecules, are referred to as reactive oxygen species (ROS). Under normal physiological conditions, ROS production is balanced by an efficient system of antioxidants, molecules that are capable of s...

o bjective : increased levels of oxidative stress markers in periodontitis have been reported by recent studies. malondialdehyde (mda) and superoxide dismutase (sod) are both in- creased during oxidative stress. the aim of this study was to detect and measure the level of oxidative stress markers in peri-implant crevicular fluid (picf). their correlation with peri-implant clinical parameters wa...

enhanced oxidative stress in diabetes mellitus may contribute to the pathogenesis of diaetic complications. in this article, the stress oxidative generation has been studied in experimental diabetes by ferric reducing ability of plasma assay, a sensitive and simple method, and by other oxidative damage markers. the ferric reducing ability of plasma values as a total antioxidant capacity were si...

introduction: myocardial infarction (mi) is associated with increased oxidative stress and reduced antioxidants. some studies have shown that exercise training increases the serum level antioxidants. therefore, this study investigated the effect of rehabilitation training on antioxidant status in patients with myocardial infarction. materials and methods: in this study, 20 patients with myocard...

background: nonalcoholic steatohepatitis (nash), a progressive stage of nonalcoholic fatty liver disease (nafld), is characterized by steatosis with inflammation. investigations have suggested that oxidative stress may play an important role in the progress of nafld to nash. to provide further insights into beneficial effects of antioxidants in nash prevention, we employed two manganese-superox...

background: this study aimed at investigation of the chemical composition, antimicrobial activity, and antioxidant properties of clove, cumin, origanum, and anise essential oils (eos). methods: chemical compositions of the eos were identified using gas chromatography/mass spectrometry (gc/ms). the antibacterial activities of eos against four important food-borne bacteria were assessed by disc d...

background: considering the wide consumption of some synthetic antioxidants and their probable negative health effects, in this study, the protective effects of satureja hortensis l. extracts in stabilizing soybean oil against oxidation at different concentrations (200 and 400 ppm) were tested. methods: the aerial parts of s. hortensis l. were collected from isfahan province and extracted with ...

Acute kidney injury (AKI) is the common clinical syndrome which is associated with increased morbidity and mortality. The severity extends from less to more advanced spectrums which link to biological, physical and chemical agents. Oxidative stress (OS)-related AKI has demonstrated the increasing of reactive oxygen species (ROS) and reactive nitrogen species (RNS) and the decreasing of endogeno...