Background The main system of central ethanol oxidation is mediated by the enzyme catalase. By reacting with H2O2, brain catalase forms compound I (the catalase-H2O2 system), which is able to oxidize ethanol to acetaldehyde (ACD) in the brain. We have previously shown that ACD regu-lates ethanol motivational properties and possesses reinforcing effects by itself. In the present study, we invest...

Impaired polymorphonuclear neutrophil (PMN) functions during sickle cell anemia (SCA) may have a pathogenic role in the onset of vasoocclusive events. We used flow cytometry to study, in whole blood, the adhesion molecule expression and respiratory burst of PMNs from children with SCA. Three different clinical groups were studied: (1) patients with no history of vasoocclusive events (n 5 15); (...

Seeds of medicinal plant Artemisia sieberi were pretreated with H2O2 (0, 10, 50, 90, and 140 µM) and grown in saline condition (0 and 150 mM NaCl) for one month. Phytochemical properties such as antioxidant capacity and also salt tolerance in the plans arising from H2O2 pretreated seeds under salt stress were examined. Results showed a decrease in H2O2 and malondialdehyde concentrations in the ...

Heavy metals are one of the factors that pollute environment and significantly affect soil fertility, plant physiology, development, productivity. The tolerance plants to toxicity depends on species tissue, element type, duration exposure stress. Some special signal molecules such as nitric oxide (NO), hydrogen peroxide (H2O2), beneficial ions, hyperaccumulating plants, stress hormones, nanopar...

In order to evaluate the effects of priming materials and duration of priming on the seed physiological enhancement and biochemical traits of germination in pumpkin seeds a factorial experiment was conducted based on a completely randomized design with three replications at the University of Mohaghegh Ardabili. Treatments were priming with water, NaCl (3%), gibberellic acid (20 mg L-1), and asc...

low seed germination and seedling emergence is one of the main problems in saline areas. seed priming technique has been known as a challenge to improve germination and seedling emergence under different environmental stress. the objective of this research was to evaluate the effect of seed priming with gibberellin, nacl and water on seed germination and seed reserve utilization and germination...

ZnO nanoparticles were synthesized by a microwave-assisted chemical method. ZnO nanostructures were synthesized via a fast reaction between zinc acetate and ammonia at presence citric acid and other effective agents in chemical procedure. Nanostructures were characterized by X-ray diffraction , scanning electron microscopy. Seed yield and seed quality of safflower grown under drought stress. Th...

to evaluate the effects of on-farm seed priming treatments and sowing dates on rate and percentage of seedling emergence, biological yield and some physiological indices of corn hybrid (sc. 260) an experiment was conducted in hamedan, iran in 2010. a split plot in a randomized complete block design with three replications was conducted. main plots include three sowing dates (early, on-time and ...