Once the cells are challenged by intraand extracellular environmental stimuli such as nitric oxide, calcium and pathogenic organisms, the oxidative balance between reactive oxygen species (ROS) (such as O 2 , H 2 O 2 , OH·) production and antioxidant defense systems (such as glutathione reductase and catalase) is broken, resulting in accumulation of ROS within cells. ROS is linked with various ...

Current experimental research on albino rats has studied the effect of salmonellae and T2 toxin on indices of lipid peroxidation (LPO) and antioxidant protection. Joint effect of bacteria and toxicant, especially in a dose of 560.0μg/kg, was characterized by a more evident increase of integral index of blood and liver LPO – malonic dialdehyde (MDA) by 1.7 and 4.4 times, respectively, and also b...

Oxidative stress has many implications in the pathogenesis of lung diseases. In this review, we provide an overview of Reactive Oxygen Species (ROS) and nitrogen (RNS) species and antioxidants, how they relate to normal physiological function and the pathophysiology of different lung diseases, and therapeutic strategies. The production of ROS/RNS from endogenous and exogenous sources is first d...

Reactive oxygen and nitrogen species produced by metabolism and immune defenses can cause extensive damage to biomolecules. To counteract this damage, organisms rely on exogenous and endogenous antioxidants, although their relative importance in maintaining redox balance is unclear. We supplemented captive greenfinches with dietary antioxidants--carotenoids and vitamin E--and injected them with...

The well known medicinal plant, Cichorium intybus L. (Asteraceae) contains dietary oligofructose compounds which have beneficial effect on carbohydrate and lipid metabolism, other compounds e.g. polyphenol type derivatives could be responsible for the antioxidant properties reported in several studies before. Male Fischer rats were kept on normal and lipid rich diet supplemented with chicory ex...

To characterize the role of intestinal epithelial cells in mucosal host defense, we have examined endogenous antioxidant reactivity and inflammatory response in Caco-2 cell line. When differentiated Caco-2 cells were incubated with iron/ascorbate for 1-24 h, they exhibited increased malondialdehyde levels and decreased polyunsaturated fatty acid proportion in favor of saturated fatty acids. The...

background in a severe oxidative stress condition, balance of oxidant-anioxdiant system of the body breaks down, which is in order to produce more oxidants and, after that, important macromolecules such as dna undergo irreversible changes. there are reports indicating the therapeutic effects of the date. this study was aimed to evaluate the effect of date kernel`s on antioxidant capacity and th...

Flavonoids have demonstrated in vivo and in vitro leishmanicidal, trypanocidal, antioxidant, and prooxidant properties. The chemotherapy of trypanosomiasis and leishmaniasis lacks efficacy, presents high toxicity, and is related to the development of drug resistance. Thus, a series of 40 flavonoids were investigated with the purpose of correlating these properties via structure and activity ana...

Numerous experimental and clinical studies proved efficiency of treatment with lipoic acid-containing drugs in diseases, in which pro- and antioxidant balance is disrupted (diabetes, neurodegenerative diseases, acquired immune deficiency syndrome (AIDS), tumors, etc.). Efficiency of lipoate has been attributed to unique antioxidant properties of lipoate/dihydrolipoate system, its reactive oxyge...