Abstract
The effects of nanometer-sized tridecameric aluminum polycation (nano-Al13) on lactate dehydrogenase (LDH) activity have been investigated using differential pulse voltammetry (DPV) at the molecular level. The effects of nano-Al13 on LDH activity at different temperature and pH values were investigated. The results showed that these factors had quite different influences. The characteristic parameters of Michaelis constant Km and maximum velocity vmax were evaluated by monitoring the DPV reduction current of NAD+ (β-nicotinamide adenine dinucleotide) and compared with the other known inhibitors of LDH. The proposed method might be hypothesized to be a simple and convenient approach to evaluate the toxic and biological effects of nanoparticles on the environment.
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