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《Redox report : communications in free radical research》2013,18(6):302-306
Abstract Trans-plasma membrane electron transport (tPMET) in mammalian cells has been demonstrated using artificial cell-impermeable dyes, but the extent to which reduction of these dyes involves distinct pathways remains unclear. Here we compare the properties of three commonly used dyes, WST-1, FeCN and DCIP. The presence of an intermediate electron carrier (mPMS or CoQ1) was obligatory for WST-1 reduction, whereas FeCN and DCIP were reduced directly. FeCN reduction was, however, greatly enhanced by CoQ1, whereas DCIP was unaffected. Superoxide dismutase (SOD) and aminooxyacetate (AOA), a malate/aspartate shuttle inhibitor, strongly inhibited WST-1 reduction and reduced DCIP reduction by 40–60%, but failed to affect FeCN reduction, indicating involvement of mitochondrial TCA cycle-derived NADH and a possible role for superoxide in WST-1 but not FeCN reduction. Reduction of all three substrates was similarly inhibited by dicoumarol, diphenyleneiodonium and capsaicin. These results demonstrate that WST-1 FeCN and DCIP are reduced by distinct tPMET pathways. 相似文献
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Functional roles of effectors of plant-parasitic nematodes 总被引:2,自引:0,他引:2
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Prior Exercise Training Prevent Hyperglycemia in STZ Mice by Increasing Hepatic Glycogen and Mitochondrial Function on Skeletal Muscle
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