Abstract
The biological effect of Se and Cu2+ on Escherichia coli (E. coli) growth was studied by using a 3114/3236 TAM Air Isothermal Calorimeter, ampoule method, at 37°C. From the thermogenesis curves, the thermokinetic equations were established under different conditions. The kinetics showed that a low concentration of Se (1–10 μg/mL) promoted the growth of E. coli, and a high concentration of Se (>10 μg/mL) inhibited the growth, but the Cu2+ was always inhibiting the growth of E. coli. Moreover, there was an antagonistic or positive synergistic effect of Se and Cu2+ on E. coli in the different culture medium when Se was 1–10 μg/ml and Cu2+ was 1–20 μg/ml. There was a negative synergistic effect of Se and Cu2+ on E. coli when Se was higher than 10 μg/ml and Cu2+ was higher than 20 μg/ml. The antagonistic or synergistic effect between Se and Cu2+ on E. coli was related to the formation of Cu–Se complexes under the different experimental conditions chosen.
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This study was supported by the National Nature Science Foundation of China (No. 5020310).
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Ding, L., Li, X., Liu, P. et al. Study of the Action of Se and Cu on the Growth Metabolism of Escherichia coli by Microcalorimetry. Biol Trace Elem Res 137, 364–372 (2010). https://doi.org/10.1007/s12011-009-8583-7
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DOI: https://doi.org/10.1007/s12011-009-8583-7