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- W4243362011 abstract "We describe a capillary zone electrophoretic procedure with photodiode-array detection for the determination of the apoptogenic protein cytochrome c in cytosolic fractions and mitochondrial extracts from guinea pig hearts. Optimal separation was achieved with a 100 mM phosphates electrolyte solution at pH 2.05. The applied voltage was 25 kV and the capillary temperature was kept constant at 25 ± 0.5 °C. The method was linear over the concentration range of 0.2–600 pM. All determination coefficients were higher or equal to 0.9989. Limits of detection and quantitation were 0.06 pM (S/N = 3) and 0.21 pM (S/N = 10), respectively. The present method offers a time-saving way to determine cytochrome c since it can be completed in 12 min, compared to a time scale of days for Western blotting methods, or hours for ELISA-based methods. The procedure is illustrated by experiments that quantify cytochrome c released under control conditions and in a digitalis intoxication experimental animal model, in which cytochrome c content was successfully determined and was found to be (mean ± standard deviation): control cytosol (0.48 ± 0.01 pM), digitalis-intoxicated cytosol (0.85 ± 0.01 pM), control mitochondria (1.11 ± 0.1 pM) and digitalis-intoxicated mitochondria (0.75 ± 0.02 pM). Recovery results ranged from 98.4 to 110.2%. Hence, the proposed analytical method could be useful to elucidate the digitalis intoxication mechanism as well as the role of cytochrome c in mediating apoptosis." @default.
- W4243362011 created "2022-05-12" @default.
- W4243362011 date "2002-09-01" @default.
- W4243362011 modified "2023-09-30" @default.
- W4243362011 title "Inline sieves" @default.
- W4243362011 doi "https://doi.org/10.1016/s0026-0576(02)80749-8" @default.
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