Search results for: Glutathione NEM mAb 8IGSHAll mammalian cells
#27812679 
2016/10/27
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Acute Ethanol Intake Induces NAD(P)H Oxidase Activation and Rhoa Translocation in Resistance Arteries.
The mechanism underlying the vascular dysfunction induced by ethanol is not totally understood. Identification of biochemical/molecular mechanisms that could explain such effects is warranted.Janaina A Simplicio, Ulisses Vilela Hipólito, Gabriel Tavares do Vale, Glaucia Elena Callera, Camila André Pereira, Rhian M Touyz, Rita de Cássia Tostes, Carlos R Tirapelli
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100 μg100 μg50 96 wells100 μg50mg100 μgInhibitors100.00 ug50 5ug
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Studies on microsomal azoreduction. N,N-dimethyl-4-aminoazobenzene (DAB) and its derivatives.
The azoreduction of N,N-dimethyl-4-aminoazobenzene (DAB) and N-methyl-4-amino-azobenzene (MAB) by rat liver microsomes was investigated. It was shown that measurement of azoreduction of DAB and structurally related azo dyes by the conventional method of substrate disappearance required an anaerobic environment since N-demethylated and ring-hydroxylated metabolites formed aerobically interfered with the assay system, producing quantitatively inaccurate results. Oxygen partially, but not totally, inhibited azoreduction of DAB. Glutathione (GSH) inhibited the azoreduction of DAB but stimulated the azoreduction of MAB. Dithiothreitol also stimulated azoreduction of MAB but had little effect on azoreduction of DAB. Para-hydroxymercuribenzoate (PHMB) and N-ethylmaleimide (NEM) blocked titratable microsomal thiol groups and inhibited azoreduction of MAB. However, the inhibitory action of NEM was weak with DAB azoreduction although PHMB was a potent inhibitor. These findings suggest that microsomal azoreduction of DAB and MAB may proceed via different mechanisms, possibly through different species of cytochrome P-450 which have selective dependence upon the sulfhydryl environment.W G Levine