product containing a catechol group with an a ,b-unsaturated carboxylic acid chain (Fig. 1), is a widespread phenolic acid, naturally found in many agricultural products such as fruits, vegetables, wine, olive oil, and coffee. Caffeic acid has been reported to possess a wide spectrum of biological effects such as antioxidant activity, inhibition of enzyme activities (lipoxygenase, glutathione S...

Body has defense mechanisms against oxidants in the form of both enzymatic and non enzymatic antioxidants. Oxidants have both physiological and pathological role in female reproduction. Oxidative stress causes damage to the ovaries, oogonia and ovulation as well as in implantation procedures. A study was undertaken to evaluate the polycystic ovary syndrome (PCOS) induced stress in ovarian and u...

BACKGROUND The effect of α-tocopherol or simvastatin treatment on antioxidant defense in liver of old rats was investigated. METHODS Endogenous thiobarbituric acid reactive substances (TBARS) and total nitrite/nitrate (NO(2)/NO(3)) levels as well as non-enzymatic glutathione (GSH) and enzymatic antioxidants [glutathione-S-transferase (GST), superoxide dismutase (SOD), glutathione peroxidase (...

the first reaction between food components and biological tissues occurs in the oral cavity. saliva modulates the ecosystem in the oral cavity and plays a critical role in oral homeostasis. in addition, saliva is a first line of defense against free radical-mediated stress. salivary antioxidant defense mechanisms seem to be very important. in this study we discuss in detail free radicals (fr) a...

a valuable composition of mentha piperita l. essential oil is menthol that is widely used fordifferent industries. the plants were treated with different concentrations of methyl jasmonate (meja) and after 24 h were evaluated for total soluble proteins, chlorophylls (a, b, and total), malondialdehyde, carbohydrates and antioxidant enzymes (superoxide dismutase and guaiacol peroxidase). variance...

Drought is a major abiotic stress forced by the changing climate that affects plant production and soil structure functions. A study was conducted to explore impacts of ascorbic acid (AsA) ?-tocopherol (?-toc) on agro-physiological attributes antioxidant enzymes chickpea grown in water deficit regions. The results analysis showed electrical conductivity (EC) pH were decreased from 521 mS/m 7.08...

The purpose of the work was to study state components prooxidant-antioxidant system and indicators protein metabolism in animals after a long period exposure weak electromagnetic fields. Materials methods. experiment carried out on three-month-old white outbred rats. were exposed low-intensity radiation centimeter range for 2 months, 4 hours daily. biochemical parameters blood serum 3 months en...

Milk contains plenty of enzymatic and non-enzymatic antioxidant components that probably account for the vital antioxidant protection of the infants at early stages of life against the development of complications induced by oxygen free radicals. Indigenous milk enzymes play a key role in regulating lactogenesis, including active involution of mammary gland. Moreover, they are essential constit...