silicon (si) is considered as one of the beneficial elements for plants that play important roles in plant resistance to stresses. in this experiment, the effects of three levels of silicon (0, 0.85 and 1.7 mm) on the growth and physiological processes of pumpkin were studied in plants inoculated with sphaerotheca fuliginea (250000 conidia ml−1) and non-inoculated plants under hydroponic condit...

l h e efficiency of hydroperoxides (tert-butyl hydroperoxide, hydrogen peroxide) and sulfhydryl reagents (iodoacetamide, p-chloromercuribenzene sulfonic acid) as glyceollin elicitors was examined in relation to sulfhydryl oxidation, or alteration, and to lipid peroxidation, in 3-d-old soybean hypocotyl/radicle, Glycine max. lhese oxidative events were investigated as possible early steps in the...

Addition of sulfhydryl groups to the reaction mixture, to stabilize serum creatine kinase (creatine phosphokinase, CPK), results in apparent increases in the activity of this enzyme in many sera. In addition, in sera from patients just after myocard ial infarction, assays for sulfhyd ryl-activated CPK have a different clinical pattern than do those for CPK assayed without sulfhydryl activators:...

The reactions of three organic mercurial compounds, chlormerodrin, parachloromercuribenzoate (PCMB), and parachloromercuribenzenesulfonate (PCMBS) with intact red blood cells, hemolyzed red cells, hemoglobin solutions, and hemoglobin-free ghosts have been characterized. Both PCMB and PCMBS react with only 2 to 3 sulfhydryl groups per mole of hemoglobin in solution, whereas chlormerodrin reacts ...

One of structural characteristics in human serum albumin is a single reactive free sulfhydryl group in position 34. In extracellular fluid such as serum and interstitial fluid, albumin is a mixture of oxidized forms and reduced form having free sulfhydryl group (1). The oxidized form of albumin is induced by oxidization of free sulfhydryl group due to several oxidants such as cystine, oxidized ...

The aim of this study was to investigate the effective concentration of ethanolic extract  of bee pollen on liver, spleen and heart tissues of fish. Bee pollen extract in various concentrations (0.5, 2.5, 5, 10, 20 and 30 ppm) was administered to fish for 96 h under aquarium conditions. The malondialdehyde (MDA) levels, total antioxidant status (TAS), total oxidant status (TOS), oxidative stres...

The reactions of three organic mercurial compounds, chlormerodrin, parachloromercuribenzoate (PCMB), and parachloromercuribenzenesulfonate (PCMBS) with intact red blood cells, hemolyzed red cells, hemoglobin solutions, and hemoglobin-free ghosts have been characterized. Both PCMB and PCMBS react with only 2 to 3 sulfhydryl groups per mole of hemoglobin in solution, whereas chlormerodrin reacts ...

Multiple sclerosis (MS) patients were found to have elevated thiobarbituric acid reactive material levels, increased soluble sulfhydryl groups and reduced protein sulfhydryl groups in cerebrospinal fluid and serum, and slightly reduced superoxide dismutase in serum, which suggested disease activating free radical peroxidation. Moreover, levels of these varied across methylprednisolone (MP) ther...

A relatively fresh bovine plasma albumin (BPA) preparation (0.65 sulfhydryl group per albumin molecule; 5 to 6% dimer) and an old bovine mercaptalbumin (BMA) preparation (0.72 sulfhydryl group per albumin molecule; 8 to 9 % dimer) were fractionated in a phosphate gradient on DEAE-Sephadex A-SO. Two dimer fractions were obtained. One dimer fraction had a relatively high sulfhydryl content and co...

Hydrogen sulfide (H(2)S) is a novel gasotransmitter that inhibits L-type calcium currents (I (Ca, L)). However, the underlying molecular mechanisms are unclear. In particular, the targeting site in the L-type calcium channel where H(2)S functions remains unknown. The study was designed to investigate if the sulfhydryl group could be the possible targeting site in the L-type calcium channel in r...