four mature stallions were used to study the effect of enzymatic antioxidant catalase on freezability of turkmen stallion's sperm. collected semen from stallions were processed and pooled before being divided treatments (200×106  sperm/ml) and diluted with extenders supplemented with different levels of catalase [0 (control), 100 u/ml (cat100), 150u/ml (cat150) and 200u/ml (cat200)]. exten...

addition of n-butyl nitrite to isolated rat hepatocytes caused an immediate glutathione depletion followed by an inhibition of mitochondrial respiration, inhi- bition of glycolysis and atp depletion. at cytotoxic butyl nitrite concentrations, lipid  peroxidation  occurred  before  the  plasma  membrane  was  disrupted. cytochrome p-450 inhibitors inhibited peroxynitrite formation and prevented ...

the purpose of this study was to determine the effects of different concentrations of vitamin e (vit. e) in the quality of preserved stallion semen at 5ᵒc for a period of 48 h. semen was collected and most (≥90%) seminal plasma removed by centrifugation at 600 × g. pooled samples divided in four equal parts and diluted with extenders that was supplemented with different concentrations of vit. e...

The proton pump transmembrane protein bacteriorhodopsin was successfully incorporated into planar floating lipid bilayers in gel and fluid phases, by applying a detergent-mediated incorporation method. method optimized on single supported using quartz crystal microbalance, atomic force fluorescence microscopy techniques. Neutron X-ray reflectometry were used both with the aim of determining str...

to investigate the effect of salinity stress on membrane stability index, membrane lipid peroxidation, catalase activity and protein content of fenugreek (trigonellafoenum) an experiment with five levels of short-term salinity stress (0, 50, 100, 150 and 200 mm) was carried out at the laboratory of agriculture faculty of shahid bahonar university of kerman, iran. the treatments were arranged ba...

Abstract The regulation of the activity and selectivity phospholipase A2 (PLA2), which is capable cleaving fatty acid in second position ( sn-2 ) phospholipid, carried out through membrane-binding catalytic sites enzyme. For hydrolytic activity, PLA2 must first bind to phospholipid membrane, binding efficiency depends on composition membrane. site formed by several tens amino acids its differs ...

Graphene-based nano-technology is the future of biomedical devices including biosensors and, hence, it essential to unravel interaction graphene oxide (GO) with cellular membrane. Here, structural reorganization lipid molecules, which are building blocks a membrane, has been demonstrated in presence GO flakes. The membrane mimicked by forming stack bilayers zwitterionic phospholipid 1,2-dipalmi...